model_brush.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "polygon.h"
  25 #include "curves.h"
  26 #include "wad.h"
  27
  28
  29 //cvar_t r_subdivide_size = {CVAR_CLIENT | CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
  30 cvar_t mod_bsp_portalize = {CVAR_CLIENT | CVAR_SERVER, "mod_bsp_portalize", "1", "enables portal generation from BSP tree (may take several seconds per map), used by r_drawportals, r_useportalculling, r_shadow_realtime_world_compileportalculling, sv_cullentities_portal"};
  31 cvar_t r_novis = {CVAR_CLIENT, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  32 cvar_t r_nosurftextures = {CVAR_CLIENT, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
  33 cvar_t r_subdivisions_tolerance = {CVAR_CLIENT, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
  34 cvar_t r_subdivisions_mintess = {CVAR_CLIENT, "r_subdivisions_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  35 cvar_t r_subdivisions_maxtess = {CVAR_CLIENT, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  36 cvar_t r_subdivisions_maxvertices = {CVAR_CLIENT, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  37 cvar_t r_subdivisions_collision_tolerance = {CVAR_CLIENT, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
  38 cvar_t r_subdivisions_collision_mintess = {CVAR_CLIENT, "r_subdivisions_collision_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  39 cvar_t r_subdivisions_collision_maxtess = {CVAR_CLIENT, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  40 cvar_t r_subdivisions_collision_maxvertices = {CVAR_CLIENT, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  41 cvar_t r_trippy = {CVAR_CLIENT, "r_trippy", "0", "easter egg"};
  42 cvar_t r_fxaa = {CVAR_CLIENT | CVAR_SAVE, "r_fxaa", "0", "fast approximate anti aliasing"};
  43 cvar_t mod_noshader_default_offsetmapping = {CVAR_CLIENT | CVAR_SAVE, "mod_noshader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are not using q3 shader files"};
  44 cvar_t mod_obj_orientation = {CVAR_CLIENT | CVAR_SERVER, "mod_obj_orientation", "1", "fix orientation of OBJ models to the usual conventions (if zero, use coordinates as is)"};
  45 cvar_t mod_q2bsp_littransparentsurfaces = {CVAR_CLIENT, "mod_q2bsp_littransparentsurfaces", "0", "allows lighting on rain in 3v3gloom3 and other cases of transparent surfaces that have lightmaps that were ignored by quake2"};
  46 cvar_t mod_q3bsp_curves_collisions = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  47 cvar_t mod_q3bsp_curves_collisions_stride = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_curves_collisions_stride", "16", "collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  48 cvar_t mod_q3bsp_curves_stride = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_curves_stride", "16", "particle effect collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  49 cvar_t mod_q3bsp_optimizedtraceline = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  50 cvar_t mod_q3bsp_debugtracebrush = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  51 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_CLIENT | CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  52 cvar_t mod_q3bsp_nolightmaps = {CVAR_CLIENT | CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
  53 cvar_t mod_q3bsp_tracelineofsight_brushes = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
  54 cvar_t mod_q3bsp_sRGBlightmaps = {CVAR_CLIENT, "mod_q3bsp_sRGBlightmaps", "0", "treat lightmaps from Q3 maps as sRGB when vid_sRGB is active"};
  55 cvar_t mod_q3bsp_lightgrid_texture = {CVAR_CLIENT, "mod_q3bsp_lightgrid_texture", "1", "directly apply the lightgrid as a global texture rather than only reading it at the entity origin"};
  56 cvar_t mod_q3bsp_lightgrid_world_surfaces = {CVAR_CLIENT, "mod_q3bsp_lightgrid_world_surfaces", "0", "apply lightgrid lighting to the world bsp geometry rather than using lightmaps (experimental/debug tool)"};
  57 cvar_t mod_q3bsp_lightgrid_bsp_surfaces = {CVAR_CLIENT, "mod_q3bsp_lightgrid_bsp_surfaces", "0", "apply lightgrid lighting to bsp models other than the world rather than using their lightmaps (experimental/debug tool)"};
  58 cvar_t mod_q3shader_default_offsetmapping = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are using q3 shader files"};
  59 cvar_t mod_q3shader_default_offsetmapping_scale = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping_scale", "1", "default scale used for offsetmapping"};
  60 cvar_t mod_q3shader_default_offsetmapping_bias = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping_bias", "0", "default bias used for offsetmapping"};
  61 cvar_t mod_q3shader_default_polygonfactor = {CVAR_CLIENT, "mod_q3shader_default_polygonfactor", "0", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
  62 cvar_t mod_q3shader_default_polygonoffset = {CVAR_CLIENT, "mod_q3shader_default_polygonoffset", "-2", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
  63 cvar_t mod_q3shader_default_refractive_index = {CVAR_CLIENT, "mod_q3shader_default_refractive_index", "1.33", "angle of refraction specified as n to apply when a photon is refracted, example values are: 1.0003 = air, water = 1.333, crown glass = 1.517, flint glass = 1.655, diamond = 2.417"};
  64 cvar_t mod_q3shader_force_addalpha = {CVAR_CLIENT, "mod_q3shader_force_addalpha", "0", "treat GL_ONE GL_ONE (or add) blendfunc as GL_SRC_ALPHA GL_ONE for compatibility with older DarkPlaces releases"};
  65 cvar_t mod_q3shader_force_terrain_alphaflag = {CVAR_CLIENT, "mod_q3shader_force_terrain_alphaflag", "0", "for multilayered terrain shaders force TEXF_ALPHA flag on both layers"};
  66
  67 cvar_t mod_q1bsp_polygoncollisions = {CVAR_CLIENT | CVAR_SERVER, "mod_q1bsp_polygoncollisions", "0", "disables use of precomputed cliphulls and instead collides with polygons (uses Bounding Interval Hierarchy optimizations)"};
  68 cvar_t mod_recalculatenodeboxes = {CVAR_CLIENT | CVAR_SERVER, "mod_recalculatenodeboxes", "1", "enables use of generated node bounding boxes based on BSP tree portal reconstruction, rather than the node boxes supplied by the map compiler"};
  69
  70 static texture_t mod_q1bsp_texture_solid;
  71 static texture_t mod_q1bsp_texture_sky;
  72 static texture_t mod_q1bsp_texture_lava;
  73 static texture_t mod_q1bsp_texture_slime;
  74 static texture_t mod_q1bsp_texture_water;
  75
  76 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs);
  77
  78 void Mod_BrushInit(void)
  79 {
  80 //      Cvar_RegisterVariable(&r_subdivide_size);
  81         Cvar_RegisterVariable(&mod_bsp_portalize);
  82         Cvar_RegisterVariable(&r_novis);
  83         Cvar_RegisterVariable(&r_nosurftextures);
  84         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  85         Cvar_RegisterVariable(&r_subdivisions_mintess);
  86         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  87         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  88         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  89         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  90         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  91         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  92         Cvar_RegisterVariable(&r_trippy);
  93         Cvar_RegisterVariable(&r_fxaa);
  94         Cvar_RegisterVariable(&mod_noshader_default_offsetmapping);
  95         Cvar_RegisterVariable(&mod_obj_orientation);
  96         Cvar_RegisterVariable(&mod_q2bsp_littransparentsurfaces);
  97         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  98         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
  99         Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
 100         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
 101         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
 102         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
 103         Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
 104         Cvar_RegisterVariable(&mod_q3bsp_sRGBlightmaps);
 105         Cvar_RegisterVariable(&mod_q3bsp_lightgrid_texture);
 106         Cvar_RegisterVariable(&mod_q3bsp_lightgrid_world_surfaces);
 107         Cvar_RegisterVariable(&mod_q3bsp_lightgrid_bsp_surfaces);
 108         Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
 109         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping);
 110         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_scale);
 111         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_bias);
 112         Cvar_RegisterVariable(&mod_q3shader_default_polygonfactor);
 113         Cvar_RegisterVariable(&mod_q3shader_default_polygonoffset);
 114         Cvar_RegisterVariable(&mod_q3shader_default_refractive_index);
 115         Cvar_RegisterVariable(&mod_q3shader_force_addalpha);
 116         Cvar_RegisterVariable(&mod_q3shader_force_terrain_alphaflag);
 117         Cvar_RegisterVariable(&mod_q1bsp_polygoncollisions);
 118         Cvar_RegisterVariable(&mod_recalculatenodeboxes);
 119
 120         // these games were made for older DP engines and are no longer
 121         // maintained; use this hack to show their textures properly
 122         if(gamemode == GAME_NEXUIZ)
 123                 Cvar_SetQuick(&mod_q3shader_force_addalpha, "1");
 124
 125         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
 126         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
 127         mod_q1bsp_texture_solid.surfaceflags = 0;
 128         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
 129
 130         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
 131         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
 132         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
 133         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 134
 135         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
 136         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
 137         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 138         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 139
 140         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
 141         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
 142         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 143         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
 144
 145         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
 146         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
 147         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 148         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 149 }
 150
 151 static mleaf_t *Mod_BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 152 {
 153         mnode_t *node;
 154
 155         if (model == NULL)
 156                 return NULL;
 157
 158         // LadyHavoc: modified to start at first clip node,
 159         // in other words: first node of the (sub)model
 160         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 161         while (node->plane)
 162                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 163
 164         return (mleaf_t *)node;
 165 }
 166
 167 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 168 {
 169         int i;
 170         mleaf_t *leaf;
 171         leaf = Mod_BSP_PointInLeaf(model, p);
 172         if (leaf)
 173         {
 174                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 175                 if (i)
 176                 {
 177                         memcpy(out, leaf->ambient_sound_level, i);
 178                         out += i;
 179                         outsize -= i;
 180                 }
 181         }
 182         if (outsize)
 183                 memset(out, 0, outsize);
 184 }
 185
 186 static int Mod_BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 187 {
 188         int numclusters = 0;
 189         int nodestackindex = 0;
 190         mnode_t *node, *nodestack[1024];
 191         if (!model->brush.num_pvsclusters)
 192                 return -1;
 193         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 194         for (;;)
 195         {
 196 #if 1
 197                 if (node->plane)
 198                 {
 199                         // node - recurse down the BSP tree
 200                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 201                         if (sides < 3)
 202                         {
 203                                 if (sides == 0)
 204                                         return -1; // ERROR: NAN bounding box!
 205                                 // box is on one side of plane, take that path
 206                                 node = node->children[sides-1];
 207                         }
 208                         else
 209                         {
 210                                 // box crosses plane, take one path and remember the other
 211                                 if (nodestackindex < 1024)
 212                                         nodestack[nodestackindex++] = node->children[0];
 213                                 node = node->children[1];
 214                         }
 215                         continue;
 216                 }
 217                 else
 218                 {
 219                         // leaf - add clusterindex to list
 220                         if (numclusters < maxclusters)
 221                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 222                         numclusters++;
 223                 }
 224 #else
 225                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 226                 {
 227                         if (node->plane)
 228                         {
 229                                 if (nodestackindex < 1024)
 230                                         nodestack[nodestackindex++] = node->children[0];
 231                                 node = node->children[1];
 232                                 continue;
 233                         }
 234                         else
 235                         {
 236                                 // leaf - add clusterindex to list
 237                                 if (numclusters < maxclusters)
 238                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 239                                 numclusters++;
 240                         }
 241                 }
 242 #endif
 243                 // try another path we didn't take earlier
 244                 if (nodestackindex == 0)
 245                         break;
 246                 node = nodestack[--nodestackindex];
 247         }
 248         // return number of clusters found (even if more than the maxclusters)
 249         return numclusters;
 250 }
 251
 252 static int Mod_BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 253 {
 254         int nodestackindex = 0;
 255         mnode_t *node, *nodestack[1024];
 256         if (!model->brush.num_pvsclusters)
 257                 return true;
 258         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 259         for (;;)
 260         {
 261 #if 1
 262                 if (node->plane)
 263                 {
 264                         // node - recurse down the BSP tree
 265                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 266                         if (sides < 3)
 267                         {
 268                                 if (sides == 0)
 269                                         return -1; // ERROR: NAN bounding box!
 270                                 // box is on one side of plane, take that path
 271                                 node = node->children[sides-1];
 272                         }
 273                         else
 274                         {
 275                                 // box crosses plane, take one path and remember the other
 276                                 if (nodestackindex < 1024)
 277                                         nodestack[nodestackindex++] = node->children[0];
 278                                 node = node->children[1];
 279                         }
 280                         continue;
 281                 }
 282                 else
 283                 {
 284                         // leaf - check cluster bit
 285                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 286                         if (CHECKPVSBIT(pvs, clusterindex))
 287                         {
 288                                 // it is visible, return immediately with the news
 289                                 return true;
 290                         }
 291                 }
 292 #else
 293                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 294                 {
 295                         if (node->plane)
 296                         {
 297                                 if (nodestackindex < 1024)
 298                                         nodestack[nodestackindex++] = node->children[0];
 299                                 node = node->children[1];
 300                                 continue;
 301                         }
 302                         else
 303                         {
 304                                 // leaf - check cluster bit
 305                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 306                                 if (CHECKPVSBIT(pvs, clusterindex))
 307                                 {
 308                                         // it is visible, return immediately with the news
 309                                         return true;
 310                                 }
 311                         }
 312                 }
 313 #endif
 314                 // nothing to see here, try another path we didn't take earlier
 315                 if (nodestackindex == 0)
 316                         break;
 317                 node = nodestack[--nodestackindex];
 318         }
 319         // it is not visible
 320         return false;
 321 }
 322
 323 static int Mod_BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 324 {
 325         int nodestackindex = 0;
 326         mnode_t *node, *nodestack[1024];
 327         if (!model->brush.num_leafs)
 328                 return true;
 329         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 330         for (;;)
 331         {
 332 #if 1
 333                 if (node->plane)
 334                 {
 335                         // node - recurse down the BSP tree
 336                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 337                         if (sides < 3)
 338                         {
 339                                 if (sides == 0)
 340                                         return -1; // ERROR: NAN bounding box!
 341                                 // box is on one side of plane, take that path
 342                                 node = node->children[sides-1];
 343                         }
 344                         else
 345                         {
 346                                 // box crosses plane, take one path and remember the other
 347                                 if (nodestackindex < 1024)
 348                                         nodestack[nodestackindex++] = node->children[0];
 349                                 node = node->children[1];
 350                         }
 351                         continue;
 352                 }
 353                 else
 354                 {
 355                         // leaf - check cluster bit
 356                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 357                         if (CHECKPVSBIT(pvs, clusterindex))
 358                         {
 359                                 // it is visible, return immediately with the news
 360                                 return true;
 361                         }
 362                 }
 363 #else
 364                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 365                 {
 366                         if (node->plane)
 367                         {
 368                                 if (nodestackindex < 1024)
 369                                         nodestack[nodestackindex++] = node->children[0];
 370                                 node = node->children[1];
 371                                 continue;
 372                         }
 373                         else
 374                         {
 375                                 // leaf - check cluster bit
 376                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 377                                 if (CHECKPVSBIT(pvs, clusterindex))
 378                                 {
 379                                         // it is visible, return immediately with the news
 380                                         return true;
 381                                 }
 382                         }
 383                 }
 384 #endif
 385                 // nothing to see here, try another path we didn't take earlier
 386                 if (nodestackindex == 0)
 387                         break;
 388                 node = nodestack[--nodestackindex];
 389         }
 390         // it is not visible
 391         return false;
 392 }
 393
 394 static int Mod_BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 395 {
 396         int nodestackindex = 0;
 397         mnode_t *node, *nodestack[1024];
 398         if (!model->brush.num_leafs)
 399                 return true;
 400         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 401         for (;;)
 402         {
 403 #if 1
 404                 if (node->plane)
 405                 {
 406                         // node - recurse down the BSP tree
 407                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 408                         if (sides < 3)
 409                         {
 410                                 if (sides == 0)
 411                                         return -1; // ERROR: NAN bounding box!
 412                                 // box is on one side of plane, take that path
 413                                 node = node->children[sides-1];
 414                         }
 415                         else
 416                         {
 417                                 // box crosses plane, take one path and remember the other
 418                                 if (nodestackindex < 1024)
 419                                         nodestack[nodestackindex++] = node->children[0];
 420                                 node = node->children[1];
 421                         }
 422                         continue;
 423                 }
 424                 else
 425                 {
 426                         // leaf - check if it is visible
 427                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 428                         {
 429                                 // it is visible, return immediately with the news
 430                                 return true;
 431                         }
 432                 }
 433 #else
 434                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 435                 {
 436                         if (node->plane)
 437                         {
 438                                 if (nodestackindex < 1024)
 439                                         nodestack[nodestackindex++] = node->children[0];
 440                                 node = node->children[1];
 441                                 continue;
 442                         }
 443                         else
 444                         {
 445                                 // leaf - check if it is visible
 446                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 447                                 {
 448                                         // it is visible, return immediately with the news
 449                                         return true;
 450                                 }
 451                         }
 452                 }
 453 #endif
 454                 // nothing to see here, try another path we didn't take earlier
 455                 if (nodestackindex == 0)
 456                         break;
 457                 node = nodestack[--nodestackindex];
 458         }
 459         // it is not visible
 460         return false;
 461 }
 462
 463 typedef struct findnonsolidlocationinfo_s
 464 {
 465         vec3_t center;
 466         vec3_t absmin, absmax;
 467         vec_t radius;
 468         vec3_t nudge;
 469         vec_t bestdist;
 470         dp_model_t *model;
 471 }
 472 findnonsolidlocationinfo_t;
 473
 474 static void Mod_Q1BSP_FindNonSolidLocation_r_Triangle(findnonsolidlocationinfo_t *info, msurface_t *surface, int k)
 475 {
 476         int i, *tri;
 477         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 478
 479         tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 480         VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 481         VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 482         VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 483         VectorSubtract(vert[1], vert[0], edge[0]);
 484         VectorSubtract(vert[2], vert[1], edge[1]);
 485         CrossProduct(edge[1], edge[0], facenormal);
 486         if (facenormal[0] || facenormal[1] || facenormal[2])
 487         {
 488                 VectorNormalize(facenormal);
 489                 f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 490                 if (f <= info->bestdist && f >= -info->bestdist)
 491                 {
 492                         VectorSubtract(vert[0], vert[2], edge[2]);
 493                         VectorNormalize(edge[0]);
 494                         VectorNormalize(edge[1]);
 495                         VectorNormalize(edge[2]);
 496                         CrossProduct(facenormal, edge[0], edgenormal[0]);
 497                         CrossProduct(facenormal, edge[1], edgenormal[1]);
 498                         CrossProduct(facenormal, edge[2], edgenormal[2]);
 499                         // face distance
 500                         if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 501                                         && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 502                                         && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 503                         {
 504                                 // we got lucky, the center is within the face
 505                                 dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 506                                 if (dist < 0)
 507                                 {
 508                                         dist = -dist;
 509                                         if (info->bestdist > dist)
 510                                         {
 511                                                 info->bestdist = dist;
 512                                                 VectorScale(facenormal, (info->radius - -dist), info->nudge);
 513                                         }
 514                                 }
 515                                 else
 516                                 {
 517                                         if (info->bestdist > dist)
 518                                         {
 519                                                 info->bestdist = dist;
 520                                                 VectorScale(facenormal, (info->radius - dist), info->nudge);
 521                                         }
 522                                 }
 523                         }
 524                         else
 525                         {
 526                                 // check which edge or vertex the center is nearest
 527                                 for (i = 0;i < 3;i++)
 528                                 {
 529                                         f = DotProduct(info->center, edge[i]);
 530                                         if (f >= DotProduct(vert[0], edge[i])
 531                                                         && f <= DotProduct(vert[1], edge[i]))
 532                                         {
 533                                                 // on edge
 534                                                 VectorMA(info->center, -f, edge[i], point);
 535                                                 dist = sqrt(DotProduct(point, point));
 536                                                 if (info->bestdist > dist)
 537                                                 {
 538                                                         info->bestdist = dist;
 539                                                         VectorScale(point, (info->radius / dist), info->nudge);
 540                                                 }
 541                                                 // skip both vertex checks
 542                                                 // (both are further away than this edge)
 543                                                 i++;
 544                                         }
 545                                         else
 546                                         {
 547                                                 // not on edge, check first vertex of edge
 548                                                 VectorSubtract(info->center, vert[i], point);
 549                                                 dist = sqrt(DotProduct(point, point));
 550                                                 if (info->bestdist > dist)
 551                                                 {
 552                                                         info->bestdist = dist;
 553                                                         VectorScale(point, (info->radius / dist), info->nudge);
 554                                                 }
 555                                         }
 556                                 }
 557                         }
 558                 }
 559         }
 560 }
 561
 562 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 563 {
 564         int surfacenum, k, *mark;
 565         msurface_t *surface;
 566         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 567         {
 568                 surface = info->model->data_surfaces + *mark;
 569                 if(!surface->texture)
 570                         continue;
 571                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 572                 {
 573                         for (k = 0;k < surface->num_triangles;k++)
 574                         {
 575                                 Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
 576                         }
 577                 }
 578         }
 579 }
 580
 581 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 582 {
 583         if (node->plane)
 584         {
 585                 float f = PlaneDiff(info->center, node->plane);
 586                 if (f >= -info->bestdist)
 587                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 588                 if (f <= info->bestdist)
 589                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 590         }
 591         else
 592         {
 593                 if (((mleaf_t *)node)->numleafsurfaces)
 594                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 595         }
 596 }
 597
 598 static void Mod_BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 599 {
 600         int i;
 601         findnonsolidlocationinfo_t info;
 602         if (model == NULL)
 603         {
 604                 VectorCopy(in, out);
 605                 return;
 606         }
 607         VectorCopy(in, info.center);
 608         info.radius = radius;
 609         info.model = model;
 610         i = 0;
 611         do
 612         {
 613                 VectorClear(info.nudge);
 614                 info.bestdist = radius;
 615                 VectorCopy(info.center, info.absmin);
 616                 VectorCopy(info.center, info.absmax);
 617                 info.absmin[0] -= info.radius + 1;
 618                 info.absmin[1] -= info.radius + 1;
 619                 info.absmin[2] -= info.radius + 1;
 620                 info.absmax[0] += info.radius + 1;
 621                 info.absmax[1] += info.radius + 1;
 622                 info.absmax[2] += info.radius + 1;
 623                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 624                 VectorAdd(info.center, info.nudge, info.center);
 625         }
 626         while (info.bestdist < radius && ++i < 10);
 627         VectorCopy(info.center, out);
 628 }
 629
 630 int Mod_Q1BSP_SuperContentsFromNativeContents(int nativecontents)
 631 {
 632         switch(nativecontents)
 633         {
 634                 case CONTENTS_EMPTY:
 635                         return 0;
 636                 case CONTENTS_SOLID:
 637                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
 638                 case CONTENTS_WATER:
 639                         return SUPERCONTENTS_WATER;
 640                 case CONTENTS_SLIME:
 641                         return SUPERCONTENTS_SLIME;
 642                 case CONTENTS_LAVA:
 643                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 644                 case CONTENTS_SKY:
 645                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE; // to match behaviour of Q3 maps, let sky count as opaque
 646         }
 647         return 0;
 648 }
 649
 650 int Mod_Q1BSP_NativeContentsFromSuperContents(int supercontents)
 651 {
 652         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 653                 return CONTENTS_SOLID;
 654         if (supercontents & SUPERCONTENTS_SKY)
 655                 return CONTENTS_SKY;
 656         if (supercontents & SUPERCONTENTS_LAVA)
 657                 return CONTENTS_LAVA;
 658         if (supercontents & SUPERCONTENTS_SLIME)
 659                 return CONTENTS_SLIME;
 660         if (supercontents & SUPERCONTENTS_WATER)
 661                 return CONTENTS_WATER;
 662         return CONTENTS_EMPTY;
 663 }
 664
 665 typedef struct RecursiveHullCheckTraceInfo_s
 666 {
 667         // the hull we're tracing through
 668         const hull_t *hull;
 669
 670         // the trace structure to fill in
 671         trace_t *trace;
 672
 673         // start, end, and end - start (in model space)
 674         double start[3];
 675         double end[3];
 676         double dist[3];
 677 }
 678 RecursiveHullCheckTraceInfo_t;
 679
 680 // 1/32 epsilon to keep floating point happy
 681 #define DIST_EPSILON (0.03125)
 682
 683 #define HULLCHECKSTATE_EMPTY 0
 684 #define HULLCHECKSTATE_SOLID 1
 685 #define HULLCHECKSTATE_DONE 2
 686
 687 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 688 {
 689         // status variables, these don't need to be saved on the stack when
 690         // recursing...  but are because this should be thread-safe
 691         // (note: tracing against a bbox is not thread-safe, yet)
 692         int ret;
 693         mplane_t *plane;
 694         double t1, t2;
 695
 696         // variables that need to be stored on the stack when recursing
 697         mclipnode_t *node;
 698         int p1side, p2side;
 699         double midf, mid[3];
 700
 701         // keep looping until we hit a leaf
 702         while (num >= 0)
 703         {
 704                 // find the point distances
 705                 node = t->hull->clipnodes + num;
 706                 plane = t->hull->planes + node->planenum;
 707
 708                 // axial planes can be calculated more quickly without the DotProduct
 709                 if (plane->type < 3)
 710                 {
 711                         t1 = p1[plane->type] - plane->dist;
 712                         t2 = p2[plane->type] - plane->dist;
 713                 }
 714                 else
 715                 {
 716                         t1 = DotProduct (plane->normal, p1) - plane->dist;
 717                         t2 = DotProduct (plane->normal, p2) - plane->dist;
 718                 }
 719
 720                 // negative plane distances indicate children[1] (behind plane)
 721                 p1side = t1 < 0;
 722                 p2side = t2 < 0;
 723
 724                 // if the line starts and ends on the same side of the plane, recurse
 725                 // into that child instantly
 726                 if (p1side == p2side)
 727                 {
 728 #if COLLISIONPARANOID >= 3
 729                         if (p1side)
 730                                 Con_Print("<");
 731                         else
 732                                 Con_Print(">");
 733 #endif
 734                         // loop back and process the start child
 735                         num = node->children[p1side];
 736                 }
 737                 else
 738                 {
 739                         // find the midpoint where the line crosses the plane, use the
 740                         // original line for best accuracy
 741 #if COLLISIONPARANOID >= 3
 742                         Con_Print("M");
 743 #endif
 744                         if (plane->type < 3)
 745                         {
 746                                 t1 = t->start[plane->type] - plane->dist;
 747                                 t2 = t->end[plane->type] - plane->dist;
 748                         }
 749                         else
 750                         {
 751                                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 752                                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 753                         }
 754                         midf = t1 / (t1 - t2);
 755                         midf = bound(p1f, midf, p2f);
 756                         VectorMA(t->start, midf, t->dist, mid);
 757
 758                         // we now have a mid point, essentially splitting the line into
 759                         // the segments in the near child and the far child, we can now
 760                         // recurse those in order and get their results
 761
 762                         // recurse both sides, front side first
 763                         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[p1side], p1f, midf, p1, mid);
 764                         // if this side is not empty, return what it is (solid or done)
 765                         if (ret != HULLCHECKSTATE_EMPTY)
 766                                 return ret;
 767
 768                         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[p2side], midf, p2f, mid, p2);
 769                         // if other side is not solid, return what it is (empty or done)
 770                         if (ret != HULLCHECKSTATE_SOLID)
 771                                 return ret;
 772
 773                         // front is air and back is solid, this is the impact point...
 774
 775                         // copy the plane information, flipping it if needed
 776                         if (p1side)
 777                         {
 778                                 t->trace->plane.dist = -plane->dist;
 779                                 VectorNegate (plane->normal, t->trace->plane.normal);
 780                         }
 781                         else
 782                         {
 783                                 t->trace->plane.dist = plane->dist;
 784                                 VectorCopy (plane->normal, t->trace->plane.normal);
 785                         }
 786
 787                         // calculate the return fraction which is nudged off the surface a bit
 788                         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 789                         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 790                         midf = (t1 - collision_impactnudge.value) / (t1 - t2);
 791                         t->trace->fraction = bound(0, midf, 1);
 792
 793 #if COLLISIONPARANOID >= 3
 794                         Con_Print("D");
 795 #endif
 796                         return HULLCHECKSTATE_DONE;
 797                 }
 798         }
 799
 800         // we reached a leaf contents
 801
 802         // check for empty
 803         num = Mod_Q1BSP_SuperContentsFromNativeContents(num);
 804         if (!t->trace->startfound)
 805         {
 806                 t->trace->startfound = true;
 807                 t->trace->startsupercontents |= num;
 808         }
 809         if (num & SUPERCONTENTS_LIQUIDSMASK)
 810                 t->trace->inwater = true;
 811         if (num == 0)
 812                 t->trace->inopen = true;
 813         if (num & SUPERCONTENTS_SOLID)
 814                 t->trace->hittexture = &mod_q1bsp_texture_solid;
 815         else if (num & SUPERCONTENTS_SKY)
 816                 t->trace->hittexture = &mod_q1bsp_texture_sky;
 817         else if (num & SUPERCONTENTS_LAVA)
 818                 t->trace->hittexture = &mod_q1bsp_texture_lava;
 819         else if (num & SUPERCONTENTS_SLIME)
 820                 t->trace->hittexture = &mod_q1bsp_texture_slime;
 821         else
 822                 t->trace->hittexture = &mod_q1bsp_texture_water;
 823         t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 824         t->trace->hitsupercontents = num;
 825         if (num & t->trace->hitsupercontentsmask)
 826         {
 827                 // if the first leaf is solid, set startsolid
 828                 if (t->trace->allsolid)
 829                         t->trace->startsolid = true;
 830 #if COLLISIONPARANOID >= 3
 831                 Con_Print("S");
 832 #endif
 833                 return HULLCHECKSTATE_SOLID;
 834         }
 835         else
 836         {
 837                 t->trace->allsolid = false;
 838 #if COLLISIONPARANOID >= 3
 839                 Con_Print("E");
 840 #endif
 841                 return HULLCHECKSTATE_EMPTY;
 842         }
 843 }
 844
 845 //#if COLLISIONPARANOID < 2
 846 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 847 {
 848         mplane_t *plane;
 849         mclipnode_t *nodes = t->hull->clipnodes;
 850         mplane_t *planes = t->hull->planes;
 851         vec3_t point;
 852         VectorCopy(t->start, point);
 853         while (num >= 0)
 854         {
 855                 plane = planes + nodes[num].planenum;
 856                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 857         }
 858         num = Mod_Q1BSP_SuperContentsFromNativeContents(num);
 859         t->trace->startsupercontents |= num;
 860         if (num & SUPERCONTENTS_LIQUIDSMASK)
 861                 t->trace->inwater = true;
 862         if (num == 0)
 863                 t->trace->inopen = true;
 864         if (num & t->trace->hitsupercontentsmask)
 865         {
 866                 t->trace->allsolid = t->trace->startsolid = true;
 867                 return HULLCHECKSTATE_SOLID;
 868         }
 869         else
 870         {
 871                 t->trace->allsolid = t->trace->startsolid = false;
 872                 return HULLCHECKSTATE_EMPTY;
 873         }
 874 }
 875 //#endif
 876
 877 static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 878 {
 879         RecursiveHullCheckTraceInfo_t rhc;
 880
 881         memset(&rhc, 0, sizeof(rhc));
 882         memset(trace, 0, sizeof(trace_t));
 883         rhc.trace = trace;
 884         rhc.trace->fraction = 1;
 885         rhc.trace->allsolid = true;
 886         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 887         VectorCopy(start, rhc.start);
 888         VectorCopy(start, rhc.end);
 889         Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 890 }
 891
 892 static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask);
 893
 894 static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 895 {
 896         RecursiveHullCheckTraceInfo_t rhc;
 897
 898         if (VectorCompare(start, end))
 899         {
 900                 Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 901                 return;
 902         }
 903
 904         // sometimes we want to traceline against polygons so we can report the texture that was hit rather than merely a contents, but using this method breaks one of negke's maps so it must be a cvar check...
 905         if (sv_gameplayfix_q1bsptracelinereportstexture.integer)
 906         {
 907                 Mod_Q1BSP_TraceLineAgainstSurfaces(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 908                 return;
 909         }
 910
 911         memset(&rhc, 0, sizeof(rhc));
 912         memset(trace, 0, sizeof(trace_t));
 913         rhc.trace = trace;
 914         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 915         rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
 916         rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
 917         rhc.trace->fraction = 1;
 918         rhc.trace->allsolid = true;
 919         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 920         VectorCopy(start, rhc.start);
 921         VectorCopy(end, rhc.end);
 922         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 923 #if COLLISIONPARANOID >= 2
 924         Con_Printf("t(%f %f %f,%f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2]);
 925         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 926         {
 927
 928                 double test[3];
 929                 trace_t testtrace;
 930                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 931                 memset(&testtrace, 0, sizeof(trace_t));
 932                 rhc.trace = &testtrace;
 933                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 934                 rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
 935                 rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
 936                 rhc.trace->fraction = 1;
 937                 rhc.trace->allsolid = true;
 938                 VectorCopy(test, rhc.start);
 939                 VectorCopy(test, rhc.end);
 940                 VectorClear(rhc.dist);
 941                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 942                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 943                 if (!trace->startsolid && testtrace.startsolid)
 944                         Con_Printf(" - ended in solid!\n");
 945         }
 946         Con_Print("\n");
 947 #else
 948         if (VectorLength2(rhc.dist))
 949                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 950         else
 951                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 952 #endif
 953 }
 954
 955 static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 956 {
 957         // this function currently only supports same size start and end
 958         double boxsize[3];
 959         RecursiveHullCheckTraceInfo_t rhc;
 960
 961         if (VectorCompare(boxmins, boxmaxs))
 962         {
 963                 if (VectorCompare(start, end))
 964                         Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 965                 else
 966                         Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 967                 return;
 968         }
 969
 970         memset(&rhc, 0, sizeof(rhc));
 971         memset(trace, 0, sizeof(trace_t));
 972         rhc.trace = trace;
 973         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 974         rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
 975         rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
 976         rhc.trace->fraction = 1;
 977         rhc.trace->allsolid = true;
 978         VectorSubtract(boxmaxs, boxmins, boxsize);
 979         if (boxsize[0] < 3)
 980                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 981         else if (model->brush.ishlbsp)
 982         {
 983                 // LadyHavoc: this has to have a minor tolerance (the .1) because of
 984                 // minor float precision errors from the box being transformed around
 985                 if (boxsize[0] < 32.1)
 986                 {
 987                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 988                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 989                         else
 990                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 991                 }
 992                 else
 993                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 994         }
 995         else
 996         {
 997                 // LadyHavoc: this has to have a minor tolerance (the .1) because of
 998                 // minor float precision errors from the box being transformed around
 999                 if (boxsize[0] < 32.1)
1000                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
1001                 else
1002                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
1003         }
1004         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
1005         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
1006         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1007 #if COLLISIONPARANOID >= 2
1008         Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
1009         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1010         {
1011
1012                 double test[3];
1013                 trace_t testtrace;
1014                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
1015                 memset(&testtrace, 0, sizeof(trace_t));
1016                 rhc.trace = &testtrace;
1017                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1018                 rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
1019                 rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
1020                 rhc.trace->fraction = 1;
1021                 rhc.trace->allsolid = true;
1022                 VectorCopy(test, rhc.start);
1023                 VectorCopy(test, rhc.end);
1024                 VectorClear(rhc.dist);
1025                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1026                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
1027                 if (!trace->startsolid && testtrace.startsolid)
1028                         Con_Printf(" - ended in solid!\n");
1029         }
1030         Con_Print("\n");
1031 #else
1032         if (VectorLength2(rhc.dist))
1033                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1034         else
1035                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1036 #endif
1037 }
1038
1039 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
1040 {
1041         int num = model->brushq1.hulls[0].firstclipnode;
1042         mplane_t *plane;
1043         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
1044         mplane_t *planes = model->brushq1.hulls[0].planes;
1045         while (num >= 0)
1046         {
1047                 plane = planes + nodes[num].planenum;
1048                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
1049         }
1050         return Mod_Q1BSP_SuperContentsFromNativeContents(num);
1051 }
1052
1053 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1054 {
1055 #if 1
1056         colbrushf_t cbox;
1057         colplanef_t cbox_planes[6];
1058         cbox.isaabb = true;
1059         cbox.hasaabbplanes = true;
1060         cbox.supercontents = boxsupercontents;
1061         cbox.numplanes = 6;
1062         cbox.numpoints = 0;
1063         cbox.numtriangles = 0;
1064         cbox.planes = cbox_planes;
1065         cbox.points = NULL;
1066         cbox.elements = NULL;
1067         cbox.markframe = 0;
1068         cbox.mins[0] = 0;
1069         cbox.mins[1] = 0;
1070         cbox.mins[2] = 0;
1071         cbox.maxs[0] = 0;
1072         cbox.maxs[1] = 0;
1073         cbox.maxs[2] = 0;
1074         cbox_planes[0].normal[0] =  1;cbox_planes[0].normal[1] =  0;cbox_planes[0].normal[2] =  0;cbox_planes[0].dist = cmaxs[0] - mins[0];
1075         cbox_planes[1].normal[0] = -1;cbox_planes[1].normal[1] =  0;cbox_planes[1].normal[2] =  0;cbox_planes[1].dist = maxs[0] - cmins[0];
1076         cbox_planes[2].normal[0] =  0;cbox_planes[2].normal[1] =  1;cbox_planes[2].normal[2] =  0;cbox_planes[2].dist = cmaxs[1] - mins[1];
1077         cbox_planes[3].normal[0] =  0;cbox_planes[3].normal[1] = -1;cbox_planes[3].normal[2] =  0;cbox_planes[3].dist = maxs[1] - cmins[1];
1078         cbox_planes[4].normal[0] =  0;cbox_planes[4].normal[1] =  0;cbox_planes[4].normal[2] =  1;cbox_planes[4].dist = cmaxs[2] - mins[2];
1079         cbox_planes[5].normal[0] =  0;cbox_planes[5].normal[1] =  0;cbox_planes[5].normal[2] = -1;cbox_planes[5].dist = maxs[2] - cmins[2];
1080         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
1081         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
1082         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
1083         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
1084         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
1085         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
1086         memset(trace, 0, sizeof(trace_t));
1087         trace->hitsupercontentsmask = hitsupercontentsmask;
1088         trace->skipsupercontentsmask = skipsupercontentsmask;
1089         trace->skipmaterialflagsmask = skipmaterialflagsmask;
1090         trace->fraction = 1;
1091         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
1092 #else
1093         RecursiveHullCheckTraceInfo_t rhc;
1094         static hull_t box_hull;
1095         static mclipnode_t box_clipnodes[6];
1096         static mplane_t box_planes[6];
1097         // fill in a default trace
1098         memset(&rhc, 0, sizeof(rhc));
1099         memset(trace, 0, sizeof(trace_t));
1100         //To keep everything totally uniform, bounding boxes are turned into small
1101         //BSP trees instead of being compared directly.
1102         // create a temp hull from bounding box sizes
1103         box_planes[0].dist = cmaxs[0] - mins[0];
1104         box_planes[1].dist = cmins[0] - maxs[0];
1105         box_planes[2].dist = cmaxs[1] - mins[1];
1106         box_planes[3].dist = cmins[1] - maxs[1];
1107         box_planes[4].dist = cmaxs[2] - mins[2];
1108         box_planes[5].dist = cmins[2] - maxs[2];
1109 #if COLLISIONPARANOID >= 3
1110         Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
1111 #endif
1112
1113         if (box_hull.clipnodes == NULL)
1114         {
1115                 int i, side;
1116
1117                 //Set up the planes and clipnodes so that the six floats of a bounding box
1118                 //can just be stored out and get a proper hull_t structure.
1119
1120                 box_hull.clipnodes = box_clipnodes;
1121                 box_hull.planes = box_planes;
1122                 box_hull.firstclipnode = 0;
1123                 box_hull.lastclipnode = 5;
1124
1125                 for (i = 0;i < 6;i++)
1126                 {
1127                         box_clipnodes[i].planenum = i;
1128
1129                         side = i&1;
1130
1131                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
1132                         if (i != 5)
1133                                 box_clipnodes[i].children[side^1] = i + 1;
1134                         else
1135                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
1136
1137                         box_planes[i].type = i>>1;
1138                         box_planes[i].normal[i>>1] = 1;
1139                 }
1140         }
1141
1142         // trace a line through the generated clipping hull
1143         //rhc.boxsupercontents = boxsupercontents;
1144         rhc.hull = &box_hull;
1145         rhc.trace = trace;
1146         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1147         rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
1148         rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
1149         rhc.trace->fraction = 1;
1150         rhc.trace->allsolid = true;
1151         VectorCopy(start, rhc.start);
1152         VectorCopy(end, rhc.end);
1153         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1154         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1155         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1156         if (rhc.trace->startsupercontents)
1157                 rhc.trace->startsupercontents = boxsupercontents;
1158 #endif
1159 }
1160
1161 void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1162 {
1163         memset(trace, 0, sizeof(trace_t));
1164         trace->fraction = 1;
1165         trace->hitsupercontentsmask = hitsupercontentsmask;
1166         trace->skipsupercontentsmask = skipsupercontentsmask;
1167         trace->skipmaterialflagsmask = skipmaterialflagsmask;
1168         if (BoxesOverlap(start, start, cmins, cmaxs))
1169         {
1170                 trace->startsupercontents |= boxsupercontents;
1171                 if ((hitsupercontentsmask & boxsupercontents) && !(skipsupercontentsmask & boxsupercontents))
1172                 {
1173                         trace->startsolid = true;
1174                         trace->allsolid = true;
1175                 }
1176         }
1177 }
1178
1179 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
1180 {
1181         trace_t trace;
1182         Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
1183         return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
1184 }
1185
1186 static int Mod_BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
1187 {
1188         int side;
1189         float front, back;
1190         float mid, distz = endz - startz;
1191
1192         while (node->plane)
1193         {
1194                 switch (node->plane->type)
1195                 {
1196                 case PLANE_X:
1197                         node = node->children[x < node->plane->dist];
1198                         continue; // loop back and process the new node
1199                 case PLANE_Y:
1200                         node = node->children[y < node->plane->dist];
1201                         continue; // loop back and process the new node
1202                 case PLANE_Z:
1203                         side = startz < node->plane->dist;
1204                         if ((endz < node->plane->dist) == side)
1205                         {
1206                                 node = node->children[side];
1207                                 continue; // loop back and process the new node
1208                         }
1209                         // found an intersection
1210                         mid = node->plane->dist;
1211                         break;
1212                 default:
1213                         back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1214                         front += startz * node->plane->normal[2];
1215                         back += endz * node->plane->normal[2];
1216                         side = front < node->plane->dist;
1217                         if ((back < node->plane->dist) == side)
1218                         {
1219                                 node = node->children[side];
1220                                 continue; // loop back and process the new node
1221                         }
1222                         // found an intersection
1223                         mid = startz + distz * (front - node->plane->dist) / (front - back);
1224                         break;
1225                 }
1226
1227                 // go down front side
1228                 if (node->children[side]->plane && Mod_BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1229                         return true;    // hit something
1230
1231                 // check for impact on this node
1232                 if (node->numsurfaces)
1233                 {
1234                         unsigned int i;
1235                         int dsi, dti, lmwidth, lmheight;
1236                         float ds, dt;
1237                         msurface_t *surface;
1238                         unsigned char *lightmap;
1239                         int maps, line3, size3;
1240                         float dsfrac;
1241                         float dtfrac;
1242                         float scale, w, w00, w01, w10, w11;
1243
1244                         surface = model->data_surfaces + node->firstsurface;
1245                         for (i = 0;i < node->numsurfaces;i++, surface++)
1246                         {
1247                                 if(!surface->texture)
1248                                         continue;
1249                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo || !surface->lightmapinfo->samples)
1250                                         continue;       // no lightmaps
1251
1252                                 // location we want to sample in the lightmap
1253                                 ds = ((x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0]) * 0.0625f;
1254                                 dt = ((x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1]) * 0.0625f;
1255
1256                                 // check the bounds
1257                                 // thanks to jitspoe for pointing out that this int cast was
1258                                 // rounding toward zero, so we floor it
1259                                 dsi = (int)floor(ds);
1260                                 dti = (int)floor(dt);
1261                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1262                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1263
1264                                 // is it in bounds?
1265                                 // we have to tolerate a position of lmwidth-1 for some rare
1266                                 // cases - in which case the sampling position still gets
1267                                 // clamped but the color gets interpolated to that edge.
1268                                 if (dsi >= 0 && dsi < lmwidth && dti >= 0 && dti < lmheight)
1269                                 {
1270                                         // in the rare cases where we're sampling slightly off
1271                                         // the polygon, clamp the sampling position (we can still
1272                                         // interpolate outside it, where it becomes extrapolation)
1273                                         if (dsi < 0)
1274                                                 dsi = 0;
1275                                         if (dti < 0)
1276                                                 dti = 0;
1277                                         if (dsi > lmwidth-2)
1278                                                 dsi = lmwidth-2;
1279                                         if (dti > lmheight-2)
1280                                                 dti = lmheight-2;
1281
1282                                         // calculate bilinear interpolation factors
1283                                         // and also multiply by fixedpoint conversion factors to
1284                                         // compensate for lightmaps being 0-255 (as 0-2), we use
1285                                         // r_refdef.scene.rtlightstylevalue here which is already
1286                                         // 0.000-2.148 range
1287                                         // (if we used r_refdef.scene.lightstylevalue this
1288                                         //  divisor would be 32768 rather than 128)
1289                                         dsfrac = ds - dsi;
1290                                         dtfrac = dt - dti;
1291                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 128.0f);
1292                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 128.0f);
1293                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 128.0f);
1294                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 128.0f);
1295
1296                                         // values for pointer math
1297                                         line3 = lmwidth * 3; // LadyHavoc: *3 for colored lighting
1298                                         size3 = lmwidth * lmheight * 3; // LadyHavoc: *3 for colored lighting
1299
1300                                         // look up the pixel
1301                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LadyHavoc: *3 for colored lighting
1302
1303                                         // bilinear filter each lightmap style, and sum them
1304                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1305                                         {
1306                                                 scale = r_refdef.scene.rtlightstylevalue[surface->lightmapinfo->styles[maps]];
1307                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1308                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1309                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1310                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1311                                                 lightmap += size3;
1312                                         }
1313
1314                                         return true; // success
1315                                 }
1316                         }
1317                 }
1318
1319                 // go down back side
1320                 node = node->children[side ^ 1];
1321                 startz = mid;
1322                 distz = endz - startz;
1323                 // loop back and process the new node
1324         }
1325
1326         // did not hit anything
1327         return false;
1328 }
1329
1330 static void Mod_BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1331 {
1332         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1333         VectorSet(diffusenormal, 0, 0, 1);
1334
1335         if (!model->brushq1.lightdata)
1336         {
1337                 VectorSet(ambientcolor, 1, 1, 1);
1338                 VectorSet(diffusecolor, 0, 0, 0);
1339                 return;
1340         }
1341
1342         Mod_BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2] + 0.125, p[2] - 65536);
1343 }
1344
1345 static const texture_t *Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(RecursiveHullCheckTraceInfo_t *t, const dp_model_t *model, const mnode_t *node, double mid[3])
1346 {
1347         unsigned int i;
1348         int j;
1349         int k;
1350         const msurface_t *surface;
1351         float normal[3];
1352         float v0[3];
1353         float v1[3];
1354         float edgedir[3];
1355         float edgenormal[3];
1356         float p[4];
1357         float midf;
1358         float t1;
1359         float t2;
1360         VectorCopy(mid, p);
1361         p[3] = 1;
1362         surface = model->data_surfaces + node->firstsurface;
1363         for (i = 0;i < node->numsurfaces;i++, surface++)
1364         {
1365                 if(!surface->texture)
1366                         continue;
1367                 // skip surfaces whose bounding box does not include the point
1368 //              if (!BoxesOverlap(mid, mid, surface->mins, surface->maxs))
1369 //                      continue;
1370                 // skip faces with contents we don't care about
1371                 if (!(t->trace->hitsupercontentsmask & surface->texture->supercontents))
1372                         continue;
1373                 // ignore surfaces matching the skipsupercontentsmask (this is rare)
1374                 if (t->trace->skipsupercontentsmask & surface->texture->supercontents)
1375                         continue;
1376                 // skip surfaces matching the skipmaterialflagsmask (e.g. MATERIALFLAG_NOSHADOW)
1377                 if (t->trace->skipmaterialflagsmask & surface->texture->currentmaterialflags)
1378                         continue;
1379                 // get the surface normal - since it is flat we know any vertex normal will suffice
1380                 VectorCopy(model->surfmesh.data_normal3f + 3 * surface->num_firstvertex, normal);
1381                 // skip backfaces
1382                 if (DotProduct(t->dist, normal) > 0)
1383                         continue;
1384                 // iterate edges and see if the point is outside one of them
1385                 for (j = 0, k = surface->num_vertices - 1;j < surface->num_vertices;k = j, j++)
1386                 {
1387                         VectorCopy(model->surfmesh.data_vertex3f + 3 * (surface->num_firstvertex + k), v0);
1388                         VectorCopy(model->surfmesh.data_vertex3f + 3 * (surface->num_firstvertex + j), v1);
1389                         VectorSubtract(v0, v1, edgedir);
1390                         CrossProduct(edgedir, normal, edgenormal);
1391                         if (DotProduct(edgenormal, p) > DotProduct(edgenormal, v0))
1392                                 break;
1393                 }
1394                 // if the point is outside one of the edges, it is not within the surface
1395                 if (j < surface->num_vertices)
1396                         continue;
1397
1398                 // we hit a surface, this is the impact point...
1399                 VectorCopy(normal, t->trace->plane.normal);
1400                 t->trace->plane.dist = DotProduct(normal, p);
1401
1402                 // calculate the return fraction which is nudged off the surface a bit
1403                 t1 = DotProduct(t->start, t->trace->plane.normal) - t->trace->plane.dist;
1404                 t2 = DotProduct(t->end, t->trace->plane.normal) - t->trace->plane.dist;
1405                 midf = (t1 - collision_impactnudge.value) / (t1 - t2);
1406                 t->trace->fraction = bound(0, midf, 1);
1407
1408                 t->trace->hittexture = surface->texture->currentframe;
1409                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
1410                 t->trace->hitsupercontents = t->trace->hittexture->supercontents;
1411                 return surface->texture->currentframe;
1412         }
1413         return NULL;
1414 }
1415
1416 static int Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(RecursiveHullCheckTraceInfo_t *t, const dp_model_t *model, const mnode_t *node, const double p1[3], const double p2[3])
1417 {
1418         const mplane_t *plane;
1419         double t1, t2;
1420         int side;
1421         double midf, mid[3];
1422         const mleaf_t *leaf;
1423
1424         while (node->plane)
1425         {
1426                 plane = node->plane;
1427                 if (plane->type < 3)
1428                 {
1429                         t1 = p1[plane->type] - plane->dist;
1430                         t2 = p2[plane->type] - plane->dist;
1431                 }
1432                 else
1433                 {
1434                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1435                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1436                 }
1437                 if (t1 < 0)
1438                 {
1439                         if (t2 < 0)
1440                         {
1441                                 node = node->children[1];
1442                                 continue;
1443                         }
1444                         side = 1;
1445                 }
1446                 else
1447                 {
1448                         if (t2 >= 0)
1449                         {
1450                                 node = node->children[0];
1451                                 continue;
1452                         }
1453                         side = 0;
1454                 }
1455
1456                 // the line intersects, find intersection point
1457                 // LadyHavoc: this uses the original trace for maximum accuracy
1458                 if (plane->type < 3)
1459                 {
1460                         t1 = t->start[plane->type] - plane->dist;
1461                         t2 = t->end[plane->type] - plane->dist;
1462                 }
1463                 else
1464                 {
1465                         t1 = DotProduct (plane->normal, t->start) - plane->dist;
1466                         t2 = DotProduct (plane->normal, t->end) - plane->dist;
1467                 }
1468
1469                 midf = t1 / (t1 - t2);
1470                 VectorMA(t->start, midf, t->dist, mid);
1471
1472                 // recurse both sides, front side first, return if we hit a surface
1473                 if (Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(t, model, node->children[side], p1, mid) == HULLCHECKSTATE_DONE)
1474                         return HULLCHECKSTATE_DONE;
1475
1476                 // test each surface on the node
1477                 Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(t, model, node, mid);
1478                 if (t->trace->hittexture)
1479                         return HULLCHECKSTATE_DONE;
1480
1481                 // recurse back side
1482                 return Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(t, model, node->children[side ^ 1], mid, p2);
1483         }
1484         leaf = (const mleaf_t *)node;
1485         side = Mod_Q1BSP_SuperContentsFromNativeContents(leaf->contents);
1486         if (!t->trace->startfound)
1487         {
1488                 t->trace->startfound = true;
1489                 t->trace->startsupercontents |= side;
1490         }
1491         if (side & SUPERCONTENTS_LIQUIDSMASK)
1492                 t->trace->inwater = true;
1493         if (side == 0)
1494                 t->trace->inopen = true;
1495         if (side & t->trace->hitsupercontentsmask)
1496         {
1497                 // if the first leaf is solid, set startsolid
1498                 if (t->trace->allsolid)
1499                         t->trace->startsolid = true;
1500                 return HULLCHECKSTATE_SOLID;
1501         }
1502         else
1503         {
1504                 t->trace->allsolid = false;
1505                 return HULLCHECKSTATE_EMPTY;
1506         }
1507 }
1508
1509 static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
1510 {
1511         RecursiveHullCheckTraceInfo_t rhc;
1512
1513         memset(&rhc, 0, sizeof(rhc));
1514         memset(trace, 0, sizeof(trace_t));
1515         rhc.trace = trace;
1516         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1517         rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
1518         rhc.trace->skipmaterialflagsmask = skipmaterialflagsmask;
1519         rhc.trace->fraction = 1;
1520         rhc.trace->allsolid = true;
1521         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
1522         VectorCopy(start, rhc.start);
1523         VectorCopy(end, rhc.end);
1524         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1525         Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(&rhc, model, model->brush.data_nodes + rhc.hull->firstclipnode, rhc.start, rhc.end);
1526         VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1527 }
1528
1529 static void Mod_BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1530 {
1531         int c;
1532         unsigned char *outstart = out;
1533         while (out < outend)
1534         {
1535                 if (in == inend)
1536                 {
1537                         Con_Printf("Mod_BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1538                         return;
1539                 }
1540                 c = *in++;
1541                 if (c)
1542                         *out++ = c;
1543                 else
1544                 {
1545                         if (in == inend)
1546                         {
1547                                 Con_Printf("Mod_BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1548                                 return;
1549                         }
1550                         for (c = *in++;c > 0;c--)
1551                         {
1552                                 if (out == outend)
1553                                 {
1554                                         Con_Printf("Mod_BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1555                                         return;
1556                                 }
1557                                 *out++ = 0;
1558                         }
1559                 }
1560         }
1561 }
1562
1563 /*
1564 =============
1565 Mod_Q1BSP_LoadSplitSky
1566
1567 A sky texture is 256*128, with the right side being a masked overlay
1568 ==============
1569 */
1570 static void Mod_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1571 {
1572         int x, y;
1573         int w = width/2;
1574         int h = height;
1575         unsigned int *solidpixels = (unsigned int *)Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1576         unsigned int *alphapixels = (unsigned int *)Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1577
1578         // allocate a texture pool if we need it
1579         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1580                 loadmodel->texturepool = R_AllocTexturePool();
1581
1582         if (bytesperpixel == 4)
1583         {
1584                 for (y = 0;y < h;y++)
1585                 {
1586                         for (x = 0;x < w;x++)
1587                         {
1588                                 solidpixels[y*w+x] = ((unsigned *)src)[y*width+x+w];
1589                                 alphapixels[y*w+x] = ((unsigned *)src)[y*width+x];
1590                         }
1591                 }
1592         }
1593         else
1594         {
1595                 // make an average value for the back to avoid
1596                 // a fringe on the top level
1597                 int p, r, g, b;
1598                 union
1599                 {
1600                         unsigned int i;
1601                         unsigned char b[4];
1602                 }
1603                 bgra;
1604                 r = g = b = 0;
1605                 for (y = 0;y < h;y++)
1606                 {
1607                         for (x = 0;x < w;x++)
1608                         {
1609                                 p = src[x*width+y+w];
1610                                 r += palette_rgb[p][0];
1611                                 g += palette_rgb[p][1];
1612                                 b += palette_rgb[p][2];
1613                         }
1614                 }
1615                 bgra.b[2] = r/(w*h);
1616                 bgra.b[1] = g/(w*h);
1617                 bgra.b[0] = b/(w*h);
1618                 bgra.b[3] = 0;
1619                 for (y = 0;y < h;y++)
1620                 {
1621                         for (x = 0;x < w;x++)
1622                         {
1623                                 solidpixels[y*w+x] = palette_bgra_complete[src[y*width+x+w]];
1624                                 p = src[y*width+x];
1625                                 alphapixels[y*w+x] = p ? palette_bgra_complete[p] : bgra.i;
1626                         }
1627                 }
1628         }
1629
1630         loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h, 0, 0, 0, vid.sRGB3D);
1631         loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h, 0, 0, 0, vid.sRGB3D);
1632         Mem_Free(solidpixels);
1633         Mem_Free(alphapixels);
1634 }
1635
1636 static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
1637 {
1638         int i, j, k, num, max, altmax, mtwidth, mtheight, doffset, incomplete, nummiptex = 0, firstskynoshadowtexture = 0;
1639         skinframe_t *skinframemissing;
1640         texture_t *tx, *tx2, *anims[10], *altanims[10], *currentskynoshadowtexture;
1641         texture_t backuptex;
1642         unsigned char *data, *mtdata;
1643         const char *s;
1644         char mapname[MAX_QPATH], name[MAX_QPATH];
1645         unsigned char zeroopaque[4], zerotrans[4];
1646         sizebuf_t miptexsb;
1647         char vabuf[1024];
1648         Vector4Set(zeroopaque, 0, 0, 0, 255);
1649         Vector4Set(zerotrans, 0, 0, 0, 128);
1650
1651         loadmodel->data_textures = NULL;
1652
1653         // add two slots for notexture walls and notexture liquids, and duplicate
1654         // all sky textures; sky surfaces can be shadow-casting or not, the surface
1655         // loading will choose according to the contents behind the surface
1656         // (necessary to support e1m5 logo shadow which has a SKY contents brush,
1657         // while correctly treating sky textures as occluders in other situations).
1658         if (sb->cursize)
1659         {
1660                 int numsky = 0;
1661                 size_t watermark;
1662                 nummiptex = MSG_ReadLittleLong(sb);
1663                 loadmodel->num_textures = nummiptex + 2;
1664                 // save the position so we can go back to it
1665                 watermark = sb->readcount;
1666                 for (i = 0; i < nummiptex; i++)
1667                 {
1668                         doffset = MSG_ReadLittleLong(sb);
1669                         if (r_nosurftextures.integer)
1670                                 continue;
1671                         if (doffset == -1)
1672                         {
1673                                 Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1674                                 continue;
1675                         }
1676
1677                         MSG_InitReadBuffer(&miptexsb, sb->data + doffset, sb->cursize - doffset);
1678
1679                         // copy name, but only up to 16 characters
1680                         // (the output buffer can hold more than this, but the input buffer is
1681                         //  only 16)
1682                         for (j = 0; j < 16; j++)
1683                                 name[j] = MSG_ReadByte(&miptexsb);
1684                         name[j] = 0;
1685                         // pretty up the buffer (replacing any trailing garbage with 0)
1686                         for (j = (int)strlen(name); j < 16; j++)
1687                                 name[j] = 0;
1688
1689                         if (!strncmp(name, "sky", 3))
1690                                 numsky++;
1691                 }
1692
1693                 // bump it back to where we started parsing
1694                 sb->readcount = (int)watermark;
1695
1696                 firstskynoshadowtexture = loadmodel->num_textures;
1697                 loadmodel->num_textures += numsky;
1698         }
1699         else
1700         {
1701                 loadmodel->num_textures = 2;
1702                 firstskynoshadowtexture = loadmodel->num_textures;
1703         }
1704         loadmodel->num_texturesperskin = loadmodel->num_textures;
1705
1706         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1707
1708         // we'll be writing to these in parallel for sky textures
1709         currentskynoshadowtexture = loadmodel->data_textures + firstskynoshadowtexture;
1710
1711         // fill out all slots with notexture
1712         skinframemissing = R_SkinFrame_LoadMissing();
1713         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1714         {
1715                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1716                 tx->width = 16;
1717                 tx->height = 16;
1718                 tx->basealpha = 1.0f;
1719                 tx->materialshaderpass = tx->shaderpasses[0] = Mod_CreateShaderPass(loadmodel->mempool, skinframemissing);
1720                 tx->materialshaderpass->skinframes[0] = skinframemissing;
1721                 tx->currentskinframe = skinframemissing;
1722                 tx->basematerialflags = MATERIALFLAG_WALL;
1723                 if (i == loadmodel->num_textures - 1)
1724                 {
1725                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1726                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1727                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1728                 }
1729                 else
1730                 {
1731                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1732                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1733                 }
1734                 tx->currentframe = tx;
1735
1736                 // clear water settings
1737                 tx->reflectmin = 0;
1738                 tx->reflectmax = 1;
1739                 tx->refractive_index = mod_q3shader_default_refractive_index.value;
1740                 tx->refractfactor = 1;
1741                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1742                 tx->reflectfactor = 1;
1743                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1744                 tx->r_water_wateralpha = 1;
1745                 tx->offsetmapping = OFFSETMAPPING_DEFAULT;
1746                 tx->offsetscale = 1;
1747                 tx->offsetbias = 0;
1748                 tx->specularscalemod = 1;
1749                 tx->specularpowermod = 1;
1750                 tx->transparentsort = TRANSPARENTSORT_DISTANCE;
1751                 // WHEN ADDING DEFAULTS HERE, REMEMBER TO PUT DEFAULTS IN ALL LOADERS
1752                 // JUST GREP FOR "specularscalemod = 1".
1753         }
1754
1755         if (!sb->cursize)
1756         {
1757                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1758                 return;
1759         }
1760
1761         s = loadmodel->name;
1762         if (!strncasecmp(s, "maps/", 5))
1763                 s += 5;
1764         FS_StripExtension(s, mapname, sizeof(mapname));
1765
1766         // LadyHavoc: mostly rewritten map texture loader
1767         for (i = 0;i < nummiptex;i++)
1768         {
1769                 doffset = MSG_ReadLittleLong(sb);
1770                 if (r_nosurftextures.integer)
1771                         continue;
1772                 if (doffset == -1)
1773                 {
1774                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1775                         continue;
1776                 }
1777
1778                 MSG_InitReadBuffer(&miptexsb, sb->data + doffset, sb->cursize - doffset);
1779
1780                 // copy name, but only up to 16 characters
1781                 // (the output buffer can hold more than this, but the input buffer is
1782                 //  only 16)
1783                 for (j = 0;j < 16;j++)
1784                         name[j] = MSG_ReadByte(&miptexsb);
1785                 name[j] = 0;
1786                 // pretty up the buffer (replacing any trailing garbage with 0)
1787                 for (j = (int)strlen(name);j < 16;j++)
1788                         name[j] = 0;
1789
1790                 if (!name[0])
1791                 {
1792                         dpsnprintf(name, sizeof(name), "unnamed%i", i);
1793                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1794                 }
1795
1796                 mtwidth = MSG_ReadLittleLong(&miptexsb);
1797                 mtheight = MSG_ReadLittleLong(&miptexsb);
1798                 mtdata = NULL;
1799                 j = MSG_ReadLittleLong(&miptexsb);
1800                 if (j)
1801                 {
1802                         // texture included
1803                         if (j < 40 || j + mtwidth * mtheight > miptexsb.cursize)
1804                         {
1805                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, name);
1806                                 continue;
1807                         }
1808                         mtdata = miptexsb.data + j;
1809                 }
1810
1811                 if ((mtwidth & 15) || (mtheight & 15))
1812                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, name);
1813
1814                 // LadyHavoc: force all names to lowercase
1815                 for (j = 0;name[j];j++)
1816                         if (name[j] >= 'A' && name[j] <= 'Z')
1817                                 name[j] += 'a' - 'A';
1818
1819                 tx = loadmodel->data_textures + i;
1820                 // try to load shader or external textures, but first we have to backup the texture_t because shader loading overwrites it even if it fails
1821                 backuptex = loadmodel->data_textures[i];
1822                 if (name[0] && /* HACK */ strncmp(name, "sky", 3) /* END HACK */ && (Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + i, va(vabuf, sizeof(vabuf), "%s/%s", mapname, name), false, false, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL) ||
1823                                 Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + i, va(vabuf, sizeof(vabuf), "%s"   , name), false, false, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL)))
1824                 {
1825                         // set the width/height fields which are used for parsing texcoords in this bsp format
1826                         tx->width = mtwidth;
1827                         tx->height = mtheight;
1828                         continue;
1829                 }
1830                 // no luck with loading shaders or external textures - restore the in-progress texture loading
1831                 loadmodel->data_textures[i] = backuptex;
1832
1833                 strlcpy(tx->name, name, sizeof(tx->name));
1834                 tx->width = mtwidth;
1835                 tx->height = mtheight;
1836                 tx->basealpha = 1.0f;
1837
1838                 // start out with no animation
1839                 tx->currentframe = tx;
1840                 tx->currentskinframe = tx->materialshaderpass != NULL ? tx->materialshaderpass->skinframes[0] : NULL;
1841
1842                 if (tx->name[0] == '*')
1843                 {
1844                         if (!strncmp(tx->name, "*lava", 5))
1845                         {
1846                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1847                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1848                         }
1849                         else if (!strncmp(tx->name, "*slime", 6))
1850                         {
1851                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1852                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1853                         }
1854                         else
1855                         {
1856                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1857                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1858                         }
1859                 }
1860                 else if (!strncmp(tx->name, "sky", 3))
1861                 {
1862                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1863                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1864                         // for the surface traceline we need to hit this surface as a solid...
1865                         tx->supercontents |= SUPERCONTENTS_SOLID;
1866                 }
1867                 else
1868                 {
1869                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1870                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1871                 }
1872
1873                 if (cls.state != ca_dedicated)
1874                 {
1875                         skinframe_t *skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false, false);
1876                         if ((!skinframe &&
1877                             !(skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false, false)))
1878                                 // HACK: It loads custom skybox textures as a wall if loaded as a skinframe.
1879                                 || !strncmp(tx->name, "sky", 3))
1880                         {
1881                                 // did not find external texture via shader loading, load it from the bsp or wad3
1882                                 if (loadmodel->brush.ishlbsp)
1883                                 {
1884                                         // internal texture overrides wad
1885                                         unsigned char* pixels, * freepixels;
1886                                         pixels = freepixels = NULL;
1887                                         if (mtdata)
1888                                                 pixels = W_ConvertWAD3TextureBGRA(&miptexsb);
1889                                         if (pixels == NULL)
1890                                                 pixels = freepixels = W_GetTextureBGRA(tx->name);
1891                                         if (pixels != NULL)
1892                                         {
1893                                                 tx->width = image_width;
1894                                                 tx->height = image_height;
1895                                                 tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, pixels, image_width, image_height, image_width, image_height, CRC_Block(pixels, image_width * image_height * 4), true);
1896                                         }
1897                                         if (freepixels)
1898                                                 Mem_Free(freepixels);
1899                                 }
1900                                 else if (!strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
1901                                 {
1902                                         data = loadimagepixelsbgra(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s/%s", mapname, tx->name), false, false, false, NULL);
1903                                         if (!data)
1904                                                 data = loadimagepixelsbgra(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s", tx->name), false, false, false, NULL);
1905                                         if (data && image_width == image_height * 2)
1906                                         {
1907                                                 Mod_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1908                                                 Mem_Free(data);
1909                                         }
1910                                         else if (mtdata != NULL)
1911                                                 Mod_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1912                                 }
1913                                 else if (mtdata) // texture included
1914                                         tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1915                                 // if mtdata is NULL, the "missing" texture has already been assigned to this
1916                                 // LadyHavoc: some Tenebrae textures get replaced by black
1917                                 if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1918                                         tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zerotrans, 1, 1, 0, 0, 0, false);
1919                                 else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1920                                         tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zeroopaque, 1, 1, 0, 0, 0, false);
1921                         }
1922                         else
1923                                 tx->materialshaderpass->skinframes[0] = skinframe;
1924                         tx->currentskinframe = tx->materialshaderpass->skinframes[0];
1925                 }
1926
1927                 tx->basematerialflags = MATERIALFLAG_WALL;
1928                 if (tx->name[0] == '*')
1929                 {
1930                         // LadyHavoc: some turbulent textures should not be affected by wateralpha
1931                         if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1932                                 tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1933                         else if (!strncmp(tx->name,"*lava",5)
1934                          || !strncmp(tx->name,"*teleport",9)
1935                          || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1936                                 tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1937                         else
1938                                 tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1939                         if (tx->currentskinframe != NULL && tx->currentskinframe->hasalpha)
1940                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1941                 }
1942                 else if (tx->name[0] == '{') // fence textures
1943                 {
1944                         tx->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
1945                 }
1946                 else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1947                 {
1948                         // replace the texture with black
1949                         tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1950                 }
1951                 else if (!strncmp(tx->name, "sky", 3))
1952                         tx->basematerialflags = MATERIALFLAG_SKY;
1953                 else if (!strcmp(tx->name, "caulk"))
1954                         tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
1955                 else if (tx->currentskinframe != NULL && tx->currentskinframe->hasalpha)
1956                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1957                 tx->currentmaterialflags = tx->basematerialflags;
1958
1959                 // duplicate of sky with NOSHADOW
1960                 if (tx->basematerialflags & MATERIALFLAG_SKY)
1961                 {
1962                         *currentskynoshadowtexture = *tx;
1963                         currentskynoshadowtexture->basematerialflags |= MATERIALFLAG_NOSHADOW;
1964                         tx->skynoshadowtexture = currentskynoshadowtexture;
1965                         currentskynoshadowtexture++;
1966                 }
1967         }
1968
1969         // sequence the animations
1970         for (i = 0;i < nummiptex;i++)
1971         {
1972                 tx = loadmodel->data_textures + i;
1973                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1974                         continue;
1975                 num = tx->name[1];
1976                 if ((num < '0' || num > '9') && (num < 'a' || num > 'j'))
1977                 {
1978                         Con_Printf("Bad animating texture %s\n", tx->name);
1979                         continue;
1980                 }
1981                 if (tx->anim_total[0] || tx->anim_total[1])
1982                         continue;       // already sequenced
1983
1984                 // find the number of frames in the animation
1985                 memset(anims, 0, sizeof(anims));
1986                 memset(altanims, 0, sizeof(altanims));
1987
1988                 for (j = i;j < nummiptex;j++)
1989                 {
1990                         tx2 = loadmodel->data_textures + j;
1991                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1992                                 continue;
1993
1994                         num = tx2->name[1];
1995                         if (num >= '0' && num <= '9')
1996                                 anims[num - '0'] = tx2;
1997                         else if (num >= 'a' && num <= 'j')
1998                                 altanims[num - 'a'] = tx2;
1999                         // No need to warn otherwise - we already did above.
2000                 }
2001
2002                 max = altmax = 0;
2003                 for (j = 0;j < 10;j++)
2004                 {
2005                         if (anims[j])
2006                                 max = j + 1;
2007                         if (altanims[j])
2008                                 altmax = j + 1;
2009                 }
2010                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
2011
2012                 incomplete = false;
2013                 for (j = 0;j < max;j++)
2014                 {
2015                         if (!anims[j])
2016                         {
2017                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
2018                                 incomplete = true;
2019                         }
2020                 }
2021                 for (j = 0;j < altmax;j++)
2022                 {
2023                         if (!altanims[j])
2024                         {
2025                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
2026                                 incomplete = true;
2027                         }
2028                 }
2029                 if (incomplete)
2030                         continue;
2031
2032                 // If we have exactly one frame, something's wrong.
2033                 if (max + altmax <= 1)
2034                 {
2035                         Con_Printf("Texture %s is animated (leading +) but has only one frame\n", tx->name);
2036                 }
2037
2038                 if (altmax < 1)
2039                 {
2040                         // if there is no alternate animation, duplicate the primary
2041                         // animation into the alternate
2042                         altmax = max;
2043                         for (k = 0;k < 10;k++)
2044                                 altanims[k] = anims[k];
2045                 }
2046
2047                 if (max < 1)
2048                 {
2049                         // Warn.
2050                         Con_Printf("Missing frame 0 of %s\n", tx->name);
2051
2052                         // however, we can handle this by duplicating the alternate animation into the primary
2053                         max = altmax;
2054                         for (k = 0;k < 10;k++)
2055                                 anims[k] = altanims[k];
2056                 }
2057
2058
2059                 // link together the primary animation
2060                 for (j = 0;j < max;j++)
2061                 {
2062                         tx2 = anims[j];
2063                         tx2->animated = 1; // q1bsp
2064                         tx2->anim_total[0] = max;
2065                         tx2->anim_total[1] = altmax;
2066                         for (k = 0;k < 10;k++)
2067                         {
2068                                 tx2->anim_frames[0][k] = anims[k];
2069                                 tx2->anim_frames[1][k] = altanims[k];
2070                         }
2071                 }
2072
2073                 // if there really is an alternate anim...
2074                 if (anims[0] != altanims[0])
2075                 {
2076                         // link together the alternate animation
2077                         for (j = 0;j < altmax;j++)
2078                         {
2079                                 tx2 = altanims[j];
2080                                 tx2->animated = 1; // q1bsp
2081                                 // the primary/alternate are reversed here
2082                                 tx2->anim_total[0] = altmax;
2083                                 tx2->anim_total[1] = max;
2084                                 for (k = 0;k < 10;k++)
2085                                 {
2086                                         tx2->anim_frames[0][k] = altanims[k];
2087                                         tx2->anim_frames[1][k] = anims[k];
2088                                 }
2089                         }
2090                 }
2091         }
2092 }
2093
2094 static void Mod_Q1BSP_LoadLighting(sizebuf_t *sb)
2095 {
2096         int i;
2097         unsigned char *in, *out, *data, d;
2098         char litfilename[MAX_QPATH];
2099         char dlitfilename[MAX_QPATH];
2100         fs_offset_t filesize;
2101         if (loadmodel->brush.ishlbsp) // LadyHavoc: load the colored lighting data straight
2102         {
2103                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize);
2104                 for (i = 0;i < sb->cursize;i++)
2105                         loadmodel->brushq1.lightdata[i] = sb->data[i] >>= 1;
2106         }
2107         else // LadyHavoc: bsp version 29 (normal white lighting)
2108         {
2109                 // LadyHavoc: hope is not lost yet, check for a .lit file to load
2110                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
2111                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
2112                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
2113                 strlcat (litfilename, ".lit", sizeof (litfilename));
2114                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
2115                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
2116                 if (data)
2117                 {
2118                         if (filesize == (fs_offset_t)(8 + sb->cursize * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
2119                         {
2120                                 i = LittleLong(((int *)data)[1]);
2121                                 if (i == 1)
2122                                 {
2123                                         if (developer_loading.integer)
2124                                                 Con_Printf("loaded %s\n", litfilename);
2125                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
2126                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
2127                                         Mem_Free(data);
2128                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
2129                                         if (data)
2130                                         {
2131                                                 if (filesize == (fs_offset_t)(8 + sb->cursize * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
2132                                                 {
2133                                                         i = LittleLong(((int *)data)[1]);
2134                                                         if (i == 1)
2135                                                         {
2136                                                                 if (developer_loading.integer)
2137                                                                         Con_Printf("loaded %s\n", dlitfilename);
2138                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
2139                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
2140                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
2141                                                                 loadmodel->brushq3.deluxemapping = true;
2142                                                         }
2143                                                 }
2144                                                 Mem_Free(data);
2145                                                 data = NULL;
2146                                         }
2147                                         return;
2148                                 }
2149                                 else
2150                                         Con_Printf("Unknown .lit file version (%d)\n", i);
2151                         }
2152                         else if (filesize == 8)
2153                                 Con_Print("Empty .lit file, ignoring\n");
2154                         else
2155                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + sb->cursize * 3));
2156                         if (data)
2157                         {
2158                                 Mem_Free(data);
2159                                 data = NULL;
2160                         }
2161                 }
2162                 // LadyHavoc: oh well, expand the white lighting data
2163                 if (!sb->cursize)
2164                         return;
2165                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize*3);
2166                 in = sb->data;
2167                 out = loadmodel->brushq1.lightdata;
2168                 for (i = 0;i < sb->cursize;i++)
2169                 {
2170                         d = *in++;
2171                         *out++ = d;
2172                         *out++ = d;
2173                         *out++ = d;
2174                 }
2175         }
2176 }
2177
2178 static void Mod_Q1BSP_LoadVisibility(sizebuf_t *sb)
2179 {
2180         loadmodel->brushq1.num_compressedpvs = 0;
2181         loadmodel->brushq1.data_compressedpvs = NULL;
2182         if (!sb->cursize)
2183                 return;
2184         loadmodel->brushq1.num_compressedpvs = sb->cursize;
2185         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize);
2186         MSG_ReadBytes(sb, sb->cursize, loadmodel->brushq1.data_compressedpvs);
2187 }
2188
2189 // used only for HalfLife maps
2190 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
2191 {
2192         char key[128], value[4096];
2193         int i, j, k;
2194         if (!data)
2195                 return;
2196         if (!COM_ParseToken_Simple(&data, false, false, true))
2197                 return; // error
2198         if (com_token[0] != '{')
2199                 return; // error
2200         while (1)
2201         {
2202                 if (!COM_ParseToken_Simple(&data, false, false, true))
2203                         return; // error
2204                 if (com_token[0] == '}')
2205                         break; // end of worldspawn
2206                 if (com_token[0] == '_')
2207                         strlcpy(key, com_token + 1, sizeof(key));
2208                 else
2209                         strlcpy(key, com_token, sizeof(key));
2210                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
2211                         key[strlen(key)-1] = 0;
2212                 if (!COM_ParseToken_Simple(&data, false, false, true))
2213                         return; // error
2214                 dpsnprintf(value, sizeof(value), "%s", com_token);
2215                 if (!strcmp("wad", key)) // for HalfLife maps
2216                 {
2217                         if (loadmodel->brush.ishlbsp)
2218                         {
2219                                 j = 0;
2220                                 for (i = 0;i < (int)sizeof(value);i++)
2221                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
2222                                                 break;
2223                                 if (i < (int)sizeof(value) && value[i])
2224                                 {
2225                                         for (;i < (int)sizeof(value);i++)
2226                                         {
2227                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
2228                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
2229                                                         j = i+1;
2230                                                 else if (value[i] == ';' || value[i] == 0)
2231                                                 {
2232                                                         k = value[i];
2233                                                         value[i] = 0;
2234                                                         W_LoadTextureWadFile(&value[j], false);
2235                                                         j = i+1;
2236                                                         if (!k)
2237                                                                 break;
2238                                                 }
2239                                         }
2240                                 }
2241                         }
2242                 }
2243         }
2244 }
2245
2246 static void Mod_Q1BSP_LoadEntities(sizebuf_t *sb)
2247 {
2248         loadmodel->brush.entities = NULL;
2249         if (!sb->cursize)
2250                 return;
2251         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, sb->cursize + 1);
2252         MSG_ReadBytes(sb, sb->cursize, (unsigned char *)loadmodel->brush.entities);
2253         loadmodel->brush.entities[sb->cursize] = 0;
2254         if (loadmodel->brush.ishlbsp)
2255                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
2256 }
2257
2258
2259 static void Mod_Q1BSP_LoadVertexes(sizebuf_t *sb)
2260 {
2261         mvertex_t       *out;
2262         int                     i, count;
2263         int                     structsize = 12;
2264
2265         if (sb->cursize % structsize)
2266                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
2267         count = sb->cursize / structsize;
2268         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2269
2270         loadmodel->brushq1.vertexes = out;
2271         loadmodel->brushq1.numvertexes = count;
2272
2273         for ( i=0 ; i<count ; i++, out++)
2274         {
2275                 out->position[0] = MSG_ReadLittleFloat(sb);
2276                 out->position[1] = MSG_ReadLittleFloat(sb);
2277                 out->position[2] = MSG_ReadLittleFloat(sb);
2278         }
2279 }
2280
2281 static void Mod_Q1BSP_LoadSubmodels(sizebuf_t *sb, hullinfo_t *hullinfo)
2282 {
2283         mmodel_t        *out;
2284         int                     i, j, count;
2285         int                     structsize = (48+4*hullinfo->filehulls);
2286
2287         if (sb->cursize % structsize)
2288                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
2289
2290         count = sb->cursize / structsize;
2291         out = (mmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
2292
2293         loadmodel->brushq1.submodels = out;
2294         loadmodel->brush.numsubmodels = count;
2295
2296         for (i = 0; i < count; i++, out++)
2297         {
2298         // spread out the mins / maxs by a pixel
2299                 out->mins[0] = MSG_ReadLittleFloat(sb) - 1;
2300                 out->mins[1] = MSG_ReadLittleFloat(sb) - 1;
2301                 out->mins[2] = MSG_ReadLittleFloat(sb) - 1;
2302                 out->maxs[0] = MSG_ReadLittleFloat(sb) + 1;
2303                 out->maxs[1] = MSG_ReadLittleFloat(sb) + 1;
2304                 out->maxs[2] = MSG_ReadLittleFloat(sb) + 1;
2305                 out->origin[0] = MSG_ReadLittleFloat(sb);
2306                 out->origin[1] = MSG_ReadLittleFloat(sb);
2307                 out->origin[2] = MSG_ReadLittleFloat(sb);
2308                 for (j = 0; j < hullinfo->filehulls; j++)
2309                         out->headnode[j] = MSG_ReadLittleLong(sb);
2310                 out->visleafs  = MSG_ReadLittleLong(sb);
2311                 out->firstface = MSG_ReadLittleLong(sb);
2312                 out->numfaces  = MSG_ReadLittleLong(sb);
2313         }
2314 }
2315
2316 static void Mod_Q1BSP_LoadEdges(sizebuf_t *sb)
2317 {
2318         medge_t *out;
2319         int     i, count;
2320         int             structsize = loadmodel->brush.isbsp2 ? 8 : 4;
2321
2322         if (sb->cursize % structsize)
2323                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
2324         count = sb->cursize / structsize;
2325         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2326
2327         loadmodel->brushq1.edges = out;
2328         loadmodel->brushq1.numedges = count;
2329
2330         for ( i=0 ; i<count ; i++, out++)
2331         {
2332                 if (loadmodel->brush.isbsp2)
2333                 {
2334                         out->v[0] = (unsigned int)MSG_ReadLittleLong(sb);
2335                         out->v[1] = (unsigned int)MSG_ReadLittleLong(sb);
2336                 }
2337                 else
2338                 {
2339                         out->v[0] = (unsigned short)MSG_ReadLittleShort(sb);
2340                         out->v[1] = (unsigned short)MSG_ReadLittleShort(sb);
2341                 }
2342                 if ((int)out->v[0] >= loadmodel->brushq1.numvertexes || (int)out->v[1] >= loadmodel->brushq1.numvertexes)
2343                 {
2344                         Con_Printf("Mod_Q1BSP_LoadEdges: %s has invalid vertex indices in edge %i (vertices %i %i >= numvertices %i)\n", loadmodel->name, i, out->v[0], out->v[1], loadmodel->brushq1.numvertexes);
2345                         if(!loadmodel->brushq1.numvertexes)
2346                                 Host_Error("Mod_Q1BSP_LoadEdges: %s has edges but no vertexes, cannot fix\n", loadmodel->name);
2347
2348                         out->v[0] = 0;
2349                         out->v[1] = 0;
2350                 }
2351         }
2352 }
2353
2354 static void Mod_Q1BSP_LoadTexinfo(sizebuf_t *sb)
2355 {
2356         mtexinfo_t *out;
2357         int i, j, k, count, miptex;
2358         int structsize = 40;
2359
2360         if (sb->cursize % structsize)
2361                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
2362         count = sb->cursize / structsize;
2363         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2364
2365         loadmodel->brushq1.texinfo = out;
2366         loadmodel->brushq1.numtexinfo = count;
2367
2368         for (i = 0;i < count;i++, out++)
2369         {
2370                 for (k = 0;k < 2;k++)
2371                         for (j = 0;j < 4;j++)
2372                                 out->vecs[k][j] = MSG_ReadLittleFloat(sb);
2373
2374                 miptex = MSG_ReadLittleLong(sb);
2375                 out->q1flags = MSG_ReadLittleLong(sb);
2376
2377                 if (out->q1flags & TEX_SPECIAL)
2378                 {
2379                         // if texture chosen is NULL or the shader needs a lightmap,
2380                         // force to notexture water shader
2381                         out->textureindex = loadmodel->num_textures - 1;
2382                 }
2383                 else
2384                 {
2385                         // if texture chosen is NULL, force to notexture
2386                         out->textureindex = loadmodel->num_textures - 2;
2387                 }
2388                 // see if the specified miptex is valid and try to use it instead
2389                 if (loadmodel->data_textures)
2390                 {
2391                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
2392                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
2393                         else
2394                                 out->textureindex = miptex;
2395                 }
2396         }
2397 }
2398
2399 #if 0
2400 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2401 {
2402         int             i, j;
2403         float   *v;
2404
2405         mins[0] = mins[1] = mins[2] = 9999;
2406         maxs[0] = maxs[1] = maxs[2] = -9999;
2407         v = verts;
2408         for (i = 0;i < numverts;i++)
2409         {
2410                 for (j = 0;j < 3;j++, v++)
2411                 {
2412                         if (*v < mins[j])
2413                                 mins[j] = *v;
2414                         if (*v > maxs[j])
2415                                 maxs[j] = *v;
2416                 }
2417         }
2418 }
2419
2420 #define MAX_SUBDIVPOLYTRIANGLES 4096
2421 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2422
2423 static int subdivpolyverts, subdivpolytriangles;
2424 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2425 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2426
2427 static int subdivpolylookupvert(vec3_t v)
2428 {
2429         int i;
2430         for (i = 0;i < subdivpolyverts;i++)
2431                 if (subdivpolyvert[i][0] == v[0]
2432                  && subdivpolyvert[i][1] == v[1]
2433                  && subdivpolyvert[i][2] == v[2])
2434                         return i;
2435         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2436                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2437         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2438         return subdivpolyverts++;
2439 }
2440
2441 static void SubdividePolygon(int numverts, float *verts)
2442 {
2443         int             i, i1, i2, i3, f, b, c, p;
2444         vec3_t  mins, maxs, front[256], back[256];
2445         float   m, *pv, *cv, dist[256], frac;
2446
2447         if (numverts > 250)
2448                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2449
2450         BoundPoly(numverts, verts, mins, maxs);
2451
2452         for (i = 0;i < 3;i++)
2453         {
2454                 m = (mins[i] + maxs[i]) * 0.5;
2455                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2456                 if (maxs[i] - m < 8)
2457                         continue;
2458                 if (m - mins[i] < 8)
2459                         continue;
2460
2461                 // cut it
2462                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2463                         dist[c] = cv[i] - m;
2464
2465                 f = b = 0;
2466                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2467                 {
2468                         if (dist[p] >= 0)
2469                         {
2470                                 VectorCopy(pv, front[f]);
2471                                 f++;
2472                         }
2473                         if (dist[p] <= 0)
2474                         {
2475                                 VectorCopy(pv, back[b]);
2476                                 b++;
2477                         }
2478                         if (dist[p] == 0 || dist[c] == 0)
2479                                 continue;
2480                         if ((dist[p] > 0) != (dist[c] > 0) )
2481                         {
2482                                 // clip point
2483                                 frac = dist[p] / (dist[p] - dist[c]);
2484                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2485                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2486                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2487                                 f++;
2488                                 b++;
2489                         }
2490                 }
2491
2492                 SubdividePolygon(f, front[0]);
2493                 SubdividePolygon(b, back[0]);
2494                 return;
2495         }
2496
2497         i1 = subdivpolylookupvert(verts);
2498         i2 = subdivpolylookupvert(verts + 3);
2499         for (i = 2;i < numverts;i++)
2500         {
2501                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2502                 {
2503                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2504                         return;
2505                 }
2506
2507                 i3 = subdivpolylookupvert(verts + i * 3);
2508                 subdivpolyindex[subdivpolytriangles][0] = i1;
2509                 subdivpolyindex[subdivpolytriangles][1] = i2;
2510                 subdivpolyindex[subdivpolytriangles][2] = i3;
2511                 i2 = i3;
2512                 subdivpolytriangles++;
2513         }
2514 }
2515
2516 //Breaks a polygon up along axial 64 unit
2517 //boundaries so that turbulent and sky warps
2518 //can be done reasonably.
2519 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2520 {
2521         int i, j;
2522         surfvertex_t *v;
2523         surfmesh_t *mesh;
2524
2525         subdivpolytriangles = 0;
2526         subdivpolyverts = 0;
2527         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2528         if (subdivpolytriangles < 1)
2529                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2530
2531         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2532         mesh->num_vertices = subdivpolyverts;
2533         mesh->num_triangles = subdivpolytriangles;
2534         mesh->vertex = (surfvertex_t *)(mesh + 1);
2535         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2536         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2537
2538         for (i = 0;i < mesh->num_triangles;i++)
2539                 for (j = 0;j < 3;j++)
2540                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2541
2542         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2543         {
2544                 VectorCopy(subdivpolyvert[i], v->v);
2545                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2546                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2547         }
2548 }
2549 #endif
2550
2551 extern cvar_t gl_max_lightmapsize;
2552 static void Mod_Q1BSP_LoadFaces(sizebuf_t *sb)
2553 {
2554         msurface_t *surface;
2555         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples, lightmapoffset, texinfoindex;
2556         float texmins[2], texmaxs[2], val;
2557         rtexture_t *lightmaptexture, *deluxemaptexture;
2558         char vabuf[1024];
2559         int structsize = loadmodel->brush.isbsp2 ? 28 : 20;
2560
2561         if (sb->cursize % structsize)
2562                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2563         count = sb->cursize / structsize;
2564         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2565         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2566
2567         loadmodel->num_surfaces = count;
2568
2569         loadmodel->brushq1.firstrender = true;
2570         loadmodel->brushq1.lightmapupdateflags = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*sizeof(unsigned char));
2571
2572         totalverts = 0;
2573         totaltris = 0;
2574         for (surfacenum = 0;surfacenum < count;surfacenum++)
2575         {
2576                 if (loadmodel->brush.isbsp2)
2577                         numedges = BuffLittleLong(sb->data + structsize * surfacenum + 12);
2578                 else
2579                         numedges = BuffLittleShort(sb->data + structsize * surfacenum + 8);
2580                 totalverts += numedges;
2581                 totaltris += numedges - 2;
2582         }
2583
2584         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false);
2585
2586         lightmaptexture = NULL;
2587         deluxemaptexture = r_texture_blanknormalmap;
2588         lightmapnumber = 0;
2589         lightmapsize = bound(256, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d);
2590         totallightmapsamples = 0;
2591
2592         totalverts = 0;
2593         totaltris = 0;
2594         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2595         {
2596                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2597                 // the struct on disk is the same in BSP29 (Q1), BSP30 (HL1), and IBSP38 (Q2)
2598                 planenum = loadmodel->brush.isbsp2 ? MSG_ReadLittleLong(sb) : (unsigned short)MSG_ReadLittleShort(sb);
2599                 /*side = */loadmodel->brush.isbsp2 ? MSG_ReadLittleLong(sb) : (unsigned short)MSG_ReadLittleShort(sb);
2600                 firstedge = MSG_ReadLittleLong(sb);
2601                 numedges = loadmodel->brush.isbsp2 ? MSG_ReadLittleLong(sb) : (unsigned short)MSG_ReadLittleShort(sb);
2602                 texinfoindex = loadmodel->brush.isbsp2 ? MSG_ReadLittleLong(sb) : (unsigned short)MSG_ReadLittleShort(sb);
2603                 for (i = 0;i < MAXLIGHTMAPS;i++)
2604                         surface->lightmapinfo->styles[i] = MSG_ReadByte(sb);
2605                 lightmapoffset = MSG_ReadLittleLong(sb);
2606
2607                 // FIXME: validate edges, texinfo, etc?
2608                 if ((unsigned int) firstedge > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges)
2609                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2610                 if ((unsigned int) texinfoindex >= (unsigned int) loadmodel->brushq1.numtexinfo)
2611                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", texinfoindex, loadmodel->brushq1.numtexinfo);
2612                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2613                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2614
2615                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + texinfoindex;
2616                 surface->texture = loadmodel->data_textures + surface->lightmapinfo->texinfo->textureindex;
2617
2618                 // Q2BSP doesn't use lightmaps on sky or warped surfaces (water), but still has a lightofs of 0
2619                 if (lightmapoffset == 0 && (surface->texture->q2flags & (Q2SURF_SKY | Q2SURF_WARP)))
2620                         lightmapoffset = -1;
2621
2622                 //surface->flags = surface->texture->flags;
2623                 //if (LittleShort(in->side))
2624                 //      surface->flags |= SURF_PLANEBACK;
2625                 //surface->plane = loadmodel->brush.data_planes + planenum;
2626
2627                 surface->num_firstvertex = totalverts;
2628                 surface->num_vertices = numedges;
2629                 surface->num_firsttriangle = totaltris;
2630                 surface->num_triangles = numedges - 2;
2631                 totalverts += numedges;
2632                 totaltris += numedges - 2;
2633
2634                 // convert edges back to a normal polygon
2635                 for (i = 0;i < surface->num_vertices;i++)
2636                 {
2637                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2638                         float s, t;
2639                         // note: the q1bsp format does not allow a 0 surfedge (it would have no negative counterpart)
2640                         if (lindex >= 0)
2641                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2642                         else
2643                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2644                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2645                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2646                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2647                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2648                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2649                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2650                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2651                 }
2652
2653                 for (i = 0;i < surface->num_triangles;i++)
2654                 {
2655                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2656                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2657                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2658                 }
2659
2660                 // compile additional data about the surface geometry
2661                 Mod_BuildNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_normal3f, r_smoothnormals_areaweighting.integer != 0);
2662                 Mod_BuildTextureVectorsFromNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, r_smoothnormals_areaweighting.integer != 0);
2663                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2664
2665                 // generate surface extents information
2666                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2667                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2668                 for (i = 1;i < surface->num_vertices;i++)
2669                 {
2670                         for (j = 0;j < 2;j++)
2671                         {
2672                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2673                                 texmins[j] = min(texmins[j], val);
2674                                 texmaxs[j] = max(texmaxs[j], val);
2675                         }
2676                 }
2677                 for (i = 0;i < 2;i++)
2678                 {
2679                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2680                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2681                 }
2682
2683                 smax = surface->lightmapinfo->extents[0] >> 4;
2684                 tmax = surface->lightmapinfo->extents[1] >> 4;
2685                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2686                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2687
2688                 // lighting info
2689                 surface->lightmaptexture = NULL;
2690                 surface->deluxemaptexture = r_texture_blanknormalmap;
2691                 if (lightmapoffset == -1)
2692                 {
2693                         surface->lightmapinfo->samples = NULL;
2694 #if 1
2695                         // give non-lightmapped water a 1x white lightmap
2696                         if (!loadmodel->brush.isq2bsp && surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->q1flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2697                         {
2698                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2699                                 surface->lightmapinfo->styles[0] = 0;
2700                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2701                         }
2702 #endif
2703                 }
2704                 else if (loadmodel->brush.ishlbsp || loadmodel->brush.isq2bsp) // LadyHavoc: HalfLife map (bsp version 30)
2705                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + lightmapoffset;
2706                 else // LadyHavoc: white lighting (bsp version 29)
2707                 {
2708                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (lightmapoffset * 3);
2709                         if (loadmodel->brushq1.nmaplightdata)
2710                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (lightmapoffset * 3);
2711                 }
2712
2713                 // check if we should apply a lightmap to this
2714                 if (!(surface->lightmapinfo->texinfo->q1flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2715                 {
2716                         if (ssize > 256 || tsize > 256)
2717                                 Host_Error("Bad surface extents");
2718
2719                         if (lightmapsize < ssize)
2720                                 lightmapsize = ssize;
2721                         if (lightmapsize < tsize)
2722                                 lightmapsize = tsize;
2723
2724                         totallightmapsamples += ssize*tsize;
2725
2726                         // force lightmap upload on first time seeing the surface
2727                         //
2728                         // additionally this is used by the later code to see if a
2729                         // lightmap is needed on this surface (rather than duplicating the
2730                         // logic above)
2731                         loadmodel->brushq1.lightmapupdateflags[surfacenum] = true;
2732                         loadmodel->lit = true;
2733                 }
2734         }
2735
2736         // small maps (such as ammo boxes especially) don't need big lightmap
2737         // textures, so this code tries to guess a good size based on
2738         // totallightmapsamples (size of the lightmaps lump basically), as well as
2739         // trying to max out the size if there is a lot of lightmap data to store
2740         // additionally, never choose a lightmapsize that is smaller than the
2741         // largest surface encountered (as it would fail)
2742         i = lightmapsize;
2743         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < bound(128, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d)) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2744                 ;
2745
2746         // now that we've decided the lightmap texture size, we can do the rest
2747         if (cls.state != ca_dedicated)
2748         {
2749                 int stainmapsize = 0;
2750                 mod_alloclightmap_state_t allocState;
2751
2752                 Mod_AllocLightmap_Init(&allocState, loadmodel->mempool, lightmapsize, lightmapsize);
2753                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2754                 {
2755                         int iu, iv, lightmapx = 0, lightmapy = 0;
2756                         float u, v, ubase, vbase, uscale, vscale;
2757
2758                         if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2759                                 continue;
2760
2761                         smax = surface->lightmapinfo->extents[0] >> 4;
2762                         tmax = surface->lightmapinfo->extents[1] >> 4;
2763                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2764                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2765                         stainmapsize += ssize * tsize * 3;
2766
2767                         if (!lightmaptexture || !Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy))
2768                         {
2769                                 // allocate a texture pool if we need it
2770                                 if (loadmodel->texturepool == NULL)
2771                                         loadmodel->texturepool = R_AllocTexturePool();
2772                                 // could not find room, make a new lightmap
2773                                 loadmodel->brushq3.num_mergedlightmaps = lightmapnumber + 1;
2774                                 loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_lightmaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_lightmaps[0]));
2775                                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_deluxemaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_deluxemaps[0]));
2776                                 loadmodel->brushq3.data_lightmaps[lightmapnumber] = lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va(vabuf, sizeof(vabuf), "lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, -1, NULL);
2777                                 if (loadmodel->brushq1.nmaplightdata)
2778                                         loadmodel->brushq3.data_deluxemaps[lightmapnumber] = deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va(vabuf, sizeof(vabuf), "deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, -1, NULL);
2779                                 lightmapnumber++;
2780                                 Mod_AllocLightmap_Reset(&allocState);
2781                                 Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy);
2782                         }
2783                         surface->lightmaptexture = lightmaptexture;
2784                         surface->deluxemaptexture = deluxemaptexture;
2785                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2786                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2787
2788                         uscale = 1.0f / (float)lightmapsize;
2789                         vscale = 1.0f / (float)lightmapsize;
2790                         ubase = lightmapx * uscale;
2791                         vbase = lightmapy * vscale;
2792
2793                         for (i = 0;i < surface->num_vertices;i++)
2794                         {
2795                                 u = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
2796                                 v = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
2797                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2798                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2799                                 // LadyHavoc: calc lightmap data offset for vertex lighting to use
2800                                 iu = (int) u;
2801                                 iv = (int) v;
2802                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2803                         }
2804                 }
2805
2806                 if (cl_stainmaps.integer)
2807                 {
2808                         // allocate stainmaps for permanent marks on walls and clear white
2809                         unsigned char *stainsamples = NULL;
2810                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2811                         memset(stainsamples, 255, stainmapsize);
2812                         // assign pointers
2813                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2814                         {
2815                                 if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2816                                         continue;
2817                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2818                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2819                                 surface->lightmapinfo->stainsamples = stainsamples;
2820                                 stainsamples += ssize * tsize * 3;
2821                         }
2822                 }
2823         }
2824
2825         // generate ushort elements array if possible
2826         if (loadmodel->surfmesh.data_element3s)
2827                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2828                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2829 }
2830
2831 static void Mod_BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2832 {
2833         //if (node->parent)
2834         //      Host_Error("Mod_BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2835         node->parent = parent;
2836         if (node->plane)
2837         {
2838                 // this is a node, recurse to children
2839                 Mod_BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2840                 Mod_BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2841                 // combine supercontents of children
2842                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2843         }
2844         else
2845         {
2846                 int j;
2847                 mleaf_t *leaf = (mleaf_t *)node;
2848                 // if this is a leaf, calculate supercontents mask from all collidable
2849                 // primitives in the leaf (brushes and collision surfaces)
2850                 // also flag if the leaf contains any collision surfaces
2851                 leaf->combinedsupercontents = 0;
2852                 // combine the supercontents values of all brushes in this leaf
2853                 for (j = 0;j < leaf->numleafbrushes;j++)
2854                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2855                 // check if this leaf contains any collision surfaces (q3 patches)
2856                 for (j = 0;j < leaf->numleafsurfaces;j++)
2857                 {
2858                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2859                         if (surface->num_collisiontriangles)
2860                         {
2861                                 leaf->containscollisionsurfaces = true;
2862                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2863                         }
2864                 }
2865         }
2866 }
2867
2868 static void Mod_Q1BSP_LoadNodes(sizebuf_t *sb)
2869 {
2870         int                     i, j, count, p, child[2];
2871         mnode_t         *out;
2872         int structsize = loadmodel->brush.isbsp2rmqe ? 32 : (loadmodel->brush.isbsp2 ? 44 : 24);
2873
2874         if (sb->cursize % structsize)
2875                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2876         count = sb->cursize / structsize;
2877         if (count == 0)
2878                 Host_Error("Mod_Q1BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
2879         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2880
2881         loadmodel->brush.data_nodes = out;
2882         loadmodel->brush.num_nodes = count;
2883
2884         for ( i=0 ; i<count ; i++, out++)
2885         {
2886                 p = MSG_ReadLittleLong(sb);
2887                 out->plane = loadmodel->brush.data_planes + p;
2888
2889                 if (loadmodel->brush.isbsp2rmqe)
2890                 {
2891                         child[0] = MSG_ReadLittleLong(sb);
2892                         child[1] = MSG_ReadLittleLong(sb);
2893                         out->mins[0] = MSG_ReadLittleShort(sb);
2894                         out->mins[1] = MSG_ReadLittleShort(sb);
2895                         out->mins[2] = MSG_ReadLittleShort(sb);
2896                         out->maxs[0] = MSG_ReadLittleShort(sb);
2897                         out->maxs[1] = MSG_ReadLittleShort(sb);
2898                         out->maxs[2] = MSG_ReadLittleShort(sb);
2899                         out->firstsurface = MSG_ReadLittleLong(sb);
2900                         out->numsurfaces = MSG_ReadLittleLong(sb);
2901                 }
2902                 else if (loadmodel->brush.isbsp2)
2903                 {
2904                         child[0] = MSG_ReadLittleLong(sb);
2905                         child[1] = MSG_ReadLittleLong(sb);
2906                         out->mins[0] = MSG_ReadLittleFloat(sb);
2907                         out->mins[1] = MSG_ReadLittleFloat(sb);
2908                         out->mins[2] = MSG_ReadLittleFloat(sb);
2909                         out->maxs[0] = MSG_ReadLittleFloat(sb);
2910                         out->maxs[1] = MSG_ReadLittleFloat(sb);
2911                         out->maxs[2] = MSG_ReadLittleFloat(sb);
2912                         out->firstsurface = MSG_ReadLittleLong(sb);
2913                         out->numsurfaces = MSG_ReadLittleLong(sb);
2914                 }
2915                 else
2916                 {
2917                         child[0] = (unsigned short)MSG_ReadLittleShort(sb);
2918                         child[1] = (unsigned short)MSG_ReadLittleShort(sb);
2919                         if (child[0] >= count)
2920                                 child[0] -= 65536;
2921                         if (child[1] >= count)
2922                                 child[1] -= 65536;
2923
2924                         out->mins[0] = MSG_ReadLittleShort(sb);
2925                         out->mins[1] = MSG_ReadLittleShort(sb);
2926                         out->mins[2] = MSG_ReadLittleShort(sb);
2927                         out->maxs[0] = MSG_ReadLittleShort(sb);
2928                         out->maxs[1] = MSG_ReadLittleShort(sb);
2929                         out->maxs[2] = MSG_ReadLittleShort(sb);
2930
2931                         out->firstsurface = (unsigned short)MSG_ReadLittleShort(sb);
2932                         out->numsurfaces = (unsigned short)MSG_ReadLittleShort(sb);
2933                 }
2934
2935                 for (j=0 ; j<2 ; j++)
2936                 {
2937                         // LadyHavoc: this code supports broken bsp files produced by
2938                         // arguire qbsp which can produce more than 32768 nodes, any value
2939                         // below count is assumed to be a node number, any other value is
2940                         // assumed to be a leaf number
2941                         p = child[j];
2942                         if (p >= 0)
2943                         {
2944                                 if (p < loadmodel->brush.num_nodes)
2945                                         out->children[j] = loadmodel->brush.data_nodes + p;
2946                                 else
2947                                 {
2948                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2949                                         // map it to the solid leaf
2950                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2951                                 }
2952                         }
2953                         else
2954                         {
2955                                 // get leaf index as a positive value starting at 0 (-1 becomes 0, -2 becomes 1, etc)
2956                                 p = -(p+1);
2957                                 if (p < loadmodel->brush.num_leafs)
2958                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2959                                 else
2960                                 {
2961                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2962                                         // map it to the solid leaf
2963                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2964                                 }
2965                         }
2966                 }
2967         }
2968
2969         Mod_BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);        // sets nodes and leafs
2970 }
2971
2972 static void Mod_Q1BSP_LoadLeafs(sizebuf_t *sb)
2973 {
2974         mleaf_t *out;
2975         int i, j, count, p, firstmarksurface, nummarksurfaces;
2976         int structsize = loadmodel->brush.isbsp2rmqe ? 32 : (loadmodel->brush.isbsp2 ? 44 : 28);
2977
2978         if (sb->cursize % structsize)
2979                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2980         count = sb->cursize / structsize;
2981         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2982
2983         loadmodel->brush.data_leafs = out;
2984         loadmodel->brush.num_leafs = count;
2985         // get visleafs from the submodel data
2986         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2987         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2988         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2989         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2990
2991         // FIXME: this function could really benefit from some error checking
2992         for ( i=0 ; i<count ; i++, out++)
2993         {
2994                 out->contents = MSG_ReadLittleLong(sb);
2995
2996                 out->clusterindex = i - 1;
2997                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2998                         out->clusterindex = -1;
2999
3000                 p = MSG_ReadLittleLong(sb);
3001                 // ignore visofs errors on leaf 0 (solid)
3002                 if (p >= 0 && out->clusterindex >= 0)
3003                 {
3004                         if (p >= loadmodel->brushq1.num_compressedpvs)
3005                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
3006                         else
3007                                 Mod_BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, loadmodel->brush.data_pvsclusters + out->clusterindex * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (out->clusterindex + 1) * loadmodel->brush.num_pvsclusterbytes);
3008                 }
3009
3010                 if (loadmodel->brush.isbsp2rmqe)
3011                 {
3012                         out->mins[0] = MSG_ReadLittleShort(sb);
3013                         out->mins[1] = MSG_ReadLittleShort(sb);
3014                         out->mins[2] = MSG_ReadLittleShort(sb);
3015                         out->maxs[0] = MSG_ReadLittleShort(sb);
3016                         out->maxs[1] = MSG_ReadLittleShort(sb);
3017                         out->maxs[2] = MSG_ReadLittleShort(sb);
3018
3019                         firstmarksurface = MSG_ReadLittleLong(sb);
3020                         nummarksurfaces = MSG_ReadLittleLong(sb);
3021                 }
3022                 else if (loadmodel->brush.isbsp2)
3023                 {
3024                         out->mins[0] = MSG_ReadLittleFloat(sb);
3025                         out->mins[1] = MSG_ReadLittleFloat(sb);
3026                         out->mins[2] = MSG_ReadLittleFloat(sb);
3027                         out->maxs[0] = MSG_ReadLittleFloat(sb);
3028                         out->maxs[1] = MSG_ReadLittleFloat(sb);
3029                         out->maxs[2] = MSG_ReadLittleFloat(sb);
3030
3031                         firstmarksurface = MSG_ReadLittleLong(sb);
3032                         nummarksurfaces = MSG_ReadLittleLong(sb);
3033                 }
3034                 else
3035                 {
3036                         out->mins[0] = MSG_ReadLittleShort(sb);
3037                         out->mins[1] = MSG_ReadLittleShort(sb);
3038                         out->mins[2] = MSG_ReadLittleShort(sb);
3039                         out->maxs[0] = MSG_ReadLittleShort(sb);
3040                         out->maxs[1] = MSG_ReadLittleShort(sb);
3041                         out->maxs[2] = MSG_ReadLittleShort(sb);
3042
3043                         firstmarksurface = (unsigned short)MSG_ReadLittleShort(sb);
3044                         nummarksurfaces  = (unsigned short)MSG_ReadLittleShort(sb);
3045                 }
3046
3047                 if (firstmarksurface >= 0 && firstmarksurface + nummarksurfaces <= loadmodel->brush.num_leafsurfaces)
3048                 {
3049                         out->firstleafsurface = loadmodel->brush.data_leafsurfaces + firstmarksurface;
3050                         out->numleafsurfaces = nummarksurfaces;
3051                 }
3052                 else
3053                 {
3054                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", firstmarksurface, firstmarksurface+nummarksurfaces, 0, loadmodel->brush.num_leafsurfaces);
3055                         out->firstleafsurface = NULL;
3056                         out->numleafsurfaces = 0;
3057                 }
3058
3059                 for (j = 0;j < 4;j++)
3060                         out->ambient_sound_level[j] = MSG_ReadByte(sb);
3061         }
3062 }
3063
3064 static qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
3065 {
3066         int i, j;
3067         mleaf_t *leaf;
3068         const unsigned char *pvs;
3069         // if there's no vis data, assume supported (because everything is visible all the time)
3070         if (!loadmodel->brush.data_pvsclusters)
3071                 return true;
3072         // check all liquid leafs to see if they can see into empty leafs, if any
3073         // can we can assume this map supports r_wateralpha
3074         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
3075         {
3076                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
3077                 {
3078                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
3079                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
3080                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
3081                                         return true;
3082                 }
3083         }
3084         return false;
3085 }
3086
3087 static void Mod_Q1BSP_LoadClipnodes(sizebuf_t *sb, hullinfo_t *hullinfo)
3088 {
3089         mclipnode_t *out;
3090         int                     i, count;
3091         hull_t          *hull;
3092         int structsize = loadmodel->brush.isbsp2 ? 12 : 8;
3093
3094         if (sb->cursize % structsize)
3095                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
3096         count = sb->cursize / structsize;
3097         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
3098
3099         loadmodel->brushq1.clipnodes = out;
3100         loadmodel->brushq1.numclipnodes = count;
3101
3102         for (i = 1; i < MAX_MAP_HULLS; i++)
3103         {
3104                 hull = &loadmodel->brushq1.hulls[i];
3105                 hull->clipnodes = out;
3106                 hull->firstclipnode = 0;
3107                 hull->lastclipnode = count-1;
3108                 hull->planes = loadmodel->brush.data_planes;
3109                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
3110                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
3111                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
3112                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
3113                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
3114                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
3115                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
3116         }
3117
3118         for (i=0 ; i<count ; i++, out++)
3119         {
3120                 out->planenum = MSG_ReadLittleLong(sb);
3121                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
3122                         Host_Error("%s: Corrupt clipping hull(out of range planenum)", loadmodel->name);
3123                 if (loadmodel->brush.isbsp2)
3124                 {
3125                         out->children[0] = MSG_ReadLittleLong(sb);
3126                         out->children[1] = MSG_ReadLittleLong(sb);
3127                         if (out->children[0] >= count)
3128                                 Host_Error("%s: Corrupt clipping hull (invalid child index)", loadmodel->name);
3129                         if (out->children[1] >= count)
3130                                 Host_Error("%s: Corrupt clipping hull (invalid child index)", loadmodel->name);
3131                 }
3132                 else
3133                 {
3134                         // LadyHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
3135                         out->children[0] = (unsigned short)MSG_ReadLittleShort(sb);
3136                         out->children[1] = (unsigned short)MSG_ReadLittleShort(sb);
3137                         if (out->children[0] >= count)
3138                                 out->children[0] -= 65536;
3139                         if (out->children[1] >= count)
3140                                 out->children[1] -= 65536;
3141                 }
3142         }
3143 }
3144
3145 //Duplicate the drawing hull structure as a clipping hull
3146 static void Mod_Q1BSP_MakeHull0(void)
3147 {
3148         mnode_t         *in;
3149         mclipnode_t *out;
3150         int                     i;
3151         hull_t          *hull;
3152
3153         hull = &loadmodel->brushq1.hulls[0];
3154
3155         in = loadmodel->brush.data_nodes;
3156         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
3157
3158         hull->clipnodes = out;
3159         hull->firstclipnode = 0;
3160         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
3161         hull->planes = loadmodel->brush.data_planes;
3162
3163         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
3164         {
3165                 out->planenum = in->plane - loadmodel->brush.data_planes;
3166                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
3167                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
3168         }
3169 }
3170
3171 static void Mod_Q1BSP_LoadLeaffaces(sizebuf_t *sb)
3172 {
3173         int i, j;
3174         int structsize = loadmodel->brush.isbsp2 ? 4 : 2;
3175
3176         if (sb->cursize % structsize)
3177                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
3178         loadmodel->brush.num_leafsurfaces = sb->cursize / structsize;
3179         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
3180
3181         if (loadmodel->brush.isbsp2)
3182         {
3183                 for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
3184                 {
3185                         j = MSG_ReadLittleLong(sb);
3186                         if (j < 0 || j >= loadmodel->num_surfaces)
3187                                 Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
3188                         loadmodel->brush.data_leafsurfaces[i] = j;
3189                 }
3190         }
3191         else
3192         {
3193                 for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
3194                 {
3195                         j = (unsigned short) MSG_ReadLittleShort(sb);
3196                         if (j >= loadmodel->num_surfaces)
3197                                 Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
3198                         loadmodel->brush.data_leafsurfaces[i] = j;
3199                 }
3200         }
3201 }
3202
3203 static void Mod_Q1BSP_LoadSurfedges(sizebuf_t *sb)
3204 {
3205         int             i;
3206         int structsize = 4;
3207
3208         if (sb->cursize % structsize)
3209                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
3210         loadmodel->brushq1.numsurfedges = sb->cursize / structsize;
3211         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
3212
3213         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
3214                 loadmodel->brushq1.surfedges[i] = MSG_ReadLittleLong(sb);
3215 }
3216
3217
3218 static void Mod_Q1BSP_LoadPlanes(sizebuf_t *sb)
3219 {
3220         int                     i;
3221         mplane_t        *out;
3222         int structsize = 20;
3223
3224         if (sb->cursize % structsize)
3225                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
3226         loadmodel->brush.num_planes = sb->cursize / structsize;
3227         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
3228
3229         for (i = 0;i < loadmodel->brush.num_planes;i++, out++)
3230         {
3231                 out->normal[0] = MSG_ReadLittleFloat(sb);
3232                 out->normal[1] = MSG_ReadLittleFloat(sb);
3233                 out->normal[2] = MSG_ReadLittleFloat(sb);
3234                 out->dist = MSG_ReadLittleFloat(sb);
3235                 MSG_ReadLittleLong(sb); // type is not used, we use PlaneClassify
3236                 PlaneClassify(out);
3237         }
3238 }
3239
3240 // fixes up sky surfaces that have SKY contents behind them, so that they do not cast shadows (e1m5 logo shadow trick).
3241 static void Mod_Q1BSP_AssignNoShadowSkySurfaces(dp_model_t *mod)
3242 {
3243         int i;
3244         msurface_t *surface;
3245         vec3_t center;
3246         int contents;
3247         for (i = 0, surface = mod->data_surfaces + mod->firstmodelsurface; i < mod->nummodelsurfaces; i++, surface++)
3248         {
3249                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3250                 {
3251                         // check if the point behind the surface polygon is SOLID or SKY contents
3252                         VectorMAMAM(0.5f, surface->mins, 0.5f, surface->maxs, -0.25f, mod->surfmesh.data_normal3f + 3*surface->num_firstvertex, center);
3253                         contents = Mod_Q1BSP_PointSuperContents(mod, 0, center);
3254                         if (!(contents & SUPERCONTENTS_SOLID))
3255                                 surface->texture = surface->texture->skynoshadowtexture;
3256                 }
3257         }
3258 }
3259
3260 static void Mod_Q1BSP_LoadMapBrushes(void)
3261 {
3262 #if 0
3263 // unfinished
3264         int submodel, numbrushes;
3265         qboolean firstbrush;
3266         char *text, *maptext;
3267         char mapfilename[MAX_QPATH];
3268         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
3269         strlcat (mapfilename, ".map", sizeof (mapfilename));
3270         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
3271         if (!maptext)
3272                 return;
3273         text = maptext;
3274         if (!COM_ParseToken_Simple(&data, false, false, true))
3275                 return; // error
3276         submodel = 0;
3277         for (;;)
3278         {
3279                 if (!COM_ParseToken_Simple(&data, false, false, true))
3280                         break;
3281                 if (com_token[0] != '{')
3282                         return; // error
3283                 // entity
3284                 firstbrush = true;
3285                 numbrushes = 0;
3286                 maxbrushes = 256;
3287                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
3288                 for (;;)
3289                 {
3290                         if (!COM_ParseToken_Simple(&data, false, false, true))
3291                                 return; // error
3292                         if (com_token[0] == '}')
3293                                 break; // end of entity
3294                         if (com_token[0] == '{')
3295                         {
3296                                 // brush
3297                                 if (firstbrush)
3298                                 {
3299                                         if (submodel)
3300                                         {
3301                                                 if (submodel > loadmodel->brush.numsubmodels)
3302                                                 {
3303                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
3304                                                         model = NULL;
3305                                                 }
3306                                                 else
3307                                                         model = loadmodel->brush.submodels[submodel];
3308                                         }
3309                                         else
3310                                                 model = loadmodel;
3311                                 }
3312                                 for (;;)
3313                                 {
3314                                         if (!COM_ParseToken_Simple(&data, false, false, true))
3315                                                 return; // error
3316                                         if (com_token[0] == '}')
3317                                                 break; // end of brush
3318                                         // each brush face should be this format:
3319                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
3320                                         // FIXME: support hl .map format
3321                                         for (pointnum = 0;pointnum < 3;pointnum++)
3322                                         {
3323                                                 COM_ParseToken_Simple(&data, false, false, true);
3324                                                 for (componentnum = 0;componentnum < 3;componentnum++)
3325                                                 {
3326                                                         COM_ParseToken_Simple(&data, false, false, true);
3327                                                         point[pointnum][componentnum] = atof(com_token);
3328                                                 }
3329                                                 COM_ParseToken_Simple(&data, false, false, true);
3330                                         }
3331                                         COM_ParseToken_Simple(&data, false, false, true);
3332                                         strlcpy(facetexture, com_token, sizeof(facetexture));
3333                                         COM_ParseToken_Simple(&data, false, false, true);
3334                                         //scroll_s = atof(com_token);
3335                                         COM_ParseToken_Simple(&data, false, false, true);
3336                                         //scroll_t = atof(com_token);
3337                                         COM_ParseToken_Simple(&data, false, false, true);
3338                                         //rotate = atof(com_token);
3339                                         COM_ParseToken_Simple(&data, false, false, true);
3340                                         //scale_s = atof(com_token);
3341                                         COM_ParseToken_Simple(&data, false, false, true);
3342                                         //scale_t = atof(com_token);
3343                                         TriangleNormal(point[0], point[1], point[2], planenormal);
3344                                         VectorNormalizeDouble(planenormal);
3345                                         planedist = DotProduct(point[0], planenormal);
3346                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
3347                                 }
3348                                 continue;
3349                         }
3350                 }
3351         }
3352 #endif
3353 }
3354
3355
3356 #define MAX_PORTALPOINTS 64
3357
3358 typedef struct portal_s
3359 {
3360         mplane_t plane;
3361         mnode_t *nodes[2];              // [0] = front side of plane
3362         struct portal_s *next[2];
3363         int numpoints;
3364         double points[3*MAX_PORTALPOINTS];
3365         struct portal_s *chain; // all portals are linked into a list
3366 }
3367 portal_t;
3368
3369 static memexpandablearray_t portalarray;
3370
3371 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
3372 {
3373         // process only nodes (leafs already had their box calculated)
3374         if (!node->plane)
3375                 return;
3376
3377         // calculate children first
3378         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
3379         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
3380
3381         // make combined bounding box from children
3382         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
3383         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
3384         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
3385         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
3386         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
3387         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
3388 }
3389
3390 static void Mod_BSP_FinalizePortals(void)
3391 {
3392         int i, j, numportals, numpoints, portalindex, portalrange = (int)Mem_ExpandableArray_IndexRange(&portalarray);
3393         portal_t *p;
3394         mportal_t *portal;
3395         mvertex_t *point;
3396         mleaf_t *leaf, *endleaf;
3397
3398         // tally up portal and point counts and recalculate bounding boxes for all
3399         // leafs (because qbsp is very sloppy)
3400         leaf = loadmodel->brush.data_leafs;
3401         endleaf = leaf + loadmodel->brush.num_leafs;
3402         if (mod_recalculatenodeboxes.integer)
3403         {
3404                 for (;leaf < endleaf;leaf++)
3405                 {
3406                         VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
3407                         VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
3408                 }
3409         }
3410         numportals = 0;
3411         numpoints = 0;
3412         for (portalindex = 0;portalindex < portalrange;portalindex++)
3413         {
3414                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
3415                 if (!p)
3416                         continue;
3417                 // note: this check must match the one below or it will usually corrupt memory
3418                 // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
3419                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3420                 {
3421                         numportals += 2;
3422                         numpoints += p->numpoints * 2;
3423                 }
3424         }
3425         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
3426         loadmodel->brush.num_portals = numportals;
3427         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
3428         loadmodel->brush.num_portalpoints = numpoints;
3429         // clear all leaf portal chains
3430         for (i = 0;i < loadmodel->brush.num_leafs;i++)
3431                 loadmodel->brush.data_leafs[i].portals = NULL;
3432         // process all portals in the global portal chain, while freeing them
3433         portal = loadmodel->brush.data_portals;
3434         point = loadmodel->brush.data_portalpoints;
3435         for (portalindex = 0;portalindex < portalrange;portalindex++)
3436         {
3437                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
3438                 if (!p)
3439                         continue;
3440                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
3441                 {
3442                         // note: this check must match the one above or it will usually corrupt memory
3443                         // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
3444                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3445                         {
3446                                 // first make the back to front portal(forward portal)
3447                                 portal->points = point;
3448                                 portal->numpoints = p->numpoints;
3449                                 portal->plane.dist = p->plane.dist;
3450                                 VectorCopy(p->plane.normal, portal->plane.normal);
3451                                 portal->here = (mleaf_t *)p->nodes[1];
3452                                 portal->past = (mleaf_t *)p->nodes[0];
3453                                 // copy points
3454                                 for (j = 0;j < portal->numpoints;j++)
3455                                 {
3456                                         VectorCopy(p->points + j*3, point->position);
3457                                         point++;
3458                                 }
3459                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3460                                 PlaneClassify(&portal->plane);
3461
3462                                 // link into leaf's portal chain
3463                                 portal->next = portal->here->portals;
3464                                 portal->here->portals = portal;
3465
3466                                 // advance to next portal
3467                                 portal++;
3468
3469                                 // then make the front to back portal(backward portal)
3470                                 portal->points = point;
3471                                 portal->numpoints = p->numpoints;
3472                                 portal->plane.dist = -p->plane.dist;
3473                                 VectorNegate(p->plane.normal, portal->plane.normal);
3474                                 portal->here = (mleaf_t *)p->nodes[0];
3475                                 portal->past = (mleaf_t *)p->nodes[1];
3476                                 // copy points
3477                                 for (j = portal->numpoints - 1;j >= 0;j--)
3478                                 {
3479                                         VectorCopy(p->points + j*3, point->position);
3480                                         point++;
3481                                 }
3482                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3483                                 PlaneClassify(&portal->plane);
3484
3485                                 // link into leaf's portal chain
3486                                 portal->next = portal->here->portals;
3487                                 portal->here->portals = portal;
3488
3489                                 // advance to next portal
3490                                 portal++;
3491                         }
3492                         // add the portal's polygon points to the leaf bounding boxes
3493                         if (mod_recalculatenodeboxes.integer)
3494                         {
3495                                 for (i = 0;i < 2;i++)
3496                                 {
3497                                         leaf = (mleaf_t *)p->nodes[i];
3498                                         for (j = 0;j < p->numpoints;j++)
3499                                         {
3500                                                 if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3501                                                 if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3502                                                 if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3503                                                 if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3504                                                 if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3505                                                 if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3506                                         }
3507                                 }
3508                         }
3509                 }
3510         }
3511         // now recalculate the node bounding boxes from the leafs
3512         if (mod_recalculatenodeboxes.integer)
3513                 Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3514 }
3515
3516 /*
3517 =============
3518 AddPortalToNodes
3519 =============
3520 */
3521 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
3522 {
3523         if (!front)
3524                 Host_Error("AddPortalToNodes: NULL front node");
3525         if (!back)
3526                 Host_Error("AddPortalToNodes: NULL back node");
3527         if (p->nodes[0] || p->nodes[1])
3528                 Host_Error("AddPortalToNodes: already included");
3529         // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
3530
3531         p->nodes[0] = front;
3532         p->next[0] = (portal_t *)front->portals;
3533         front->portals = (mportal_t *)p;
3534
3535         p->nodes[1] = back;
3536         p->next[1] = (portal_t *)back->portals;
3537         back->portals = (mportal_t *)p;
3538 }
3539
3540 /*
3541 =============
3542 RemovePortalFromNode
3543 =============
3544 */
3545 static void RemovePortalFromNodes(portal_t *portal)
3546 {
3547         int i;
3548         mnode_t *node;
3549         void **portalpointer;
3550         portal_t *t;
3551         for (i = 0;i < 2;i++)
3552         {
3553                 node = portal->nodes[i];
3554
3555                 portalpointer = (void **) &node->portals;
3556                 while (1)
3557                 {
3558                         t = (portal_t *)*portalpointer;
3559                         if (!t)
3560                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
3561
3562                         if (t == portal)
3563                         {
3564                                 if (portal->nodes[0] == node)
3565                                 {
3566                                         *portalpointer = portal->next[0];
3567                                         portal->nodes[0] = NULL;
3568                                 }
3569                                 else if (portal->nodes[1] == node)
3570                                 {
3571                                         *portalpointer = portal->next[1];
3572                                         portal->nodes[1] = NULL;
3573                                 }
3574                                 else
3575                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3576                                 break;
3577                         }
3578
3579                         if (t->nodes[0] == node)
3580                                 portalpointer = (void **) &t->next[0];
3581                         else if (t->nodes[1] == node)
3582                                 portalpointer = (void **) &t->next[1];
3583                         else
3584                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3585                 }
3586         }
3587 }
3588
3589 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
3590 static double *portalpointsbuffer;
3591 static int portalpointsbufferoffset;
3592 static int portalpointsbuffersize;
3593 static void Mod_BSP_RecursiveNodePortals(mnode_t *node)
3594 {
3595         int i, side;
3596         mnode_t *front, *back, *other_node;
3597         mplane_t clipplane, *plane;
3598         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3599         int numfrontpoints, numbackpoints;
3600         double *frontpoints, *backpoints;
3601
3602         // if a leaf, we're done
3603         if (!node->plane)
3604                 return;
3605
3606         // get some space for our clipping operations to use
3607         if (portalpointsbuffersize < portalpointsbufferoffset + 6*MAX_PORTALPOINTS)
3608         {
3609                 portalpointsbuffersize = portalpointsbufferoffset * 2;
3610                 portalpointsbuffer = (double *)Mem_Realloc(loadmodel->mempool, portalpointsbuffer, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3611         }
3612         frontpoints = portalpointsbuffer + portalpointsbufferoffset;
3613         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3614         backpoints = portalpointsbuffer + portalpointsbufferoffset;
3615         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3616
3617         plane = node->plane;
3618
3619         front = node->children[0];
3620         back = node->children[1];
3621         if (front == back)
3622                 Host_Error("Mod_BSP_RecursiveNodePortals: corrupt node hierarchy");
3623
3624         // create the new portal by generating a polygon for the node plane,
3625         // and clipping it by all of the other portals(which came from nodes above this one)
3626         nodeportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3627         nodeportal->plane = *plane;
3628
3629         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
3630         PolygonD_QuadForPlane(nodeportal->points, nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist, 1024.0*1024.0*1024.0);
3631         nodeportal->numpoints = 4;
3632         // side = 0;    // shut up compiler warning -> should be no longer needed, Host_Error is declared noreturn now
3633         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3634         {
3635                 clipplane = portal->plane;
3636                 if (portal->nodes[0] == portal->nodes[1])
3637                         Host_Error("Mod_BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3638                 if (portal->nodes[0] == node)
3639                         side = 0;
3640                 else if (portal->nodes[1] == node)
3641                 {
3642                         clipplane.dist = -clipplane.dist;
3643                         VectorNegate(clipplane.normal, clipplane.normal);
3644                         side = 1;
3645                 }
3646                 else
3647                 {
3648                         Host_Error("Mod_BSP_RecursiveNodePortals: mislinked portal");
3649                         side = 0; // hush warning
3650                 }
3651
3652                 for (i = 0;i < nodeportal->numpoints*3;i++)
3653                         frontpoints[i] = nodeportal->points[i];
3654                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
3655                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3656                         break;
3657         }
3658
3659         if (nodeportal->numpoints < 3)
3660         {
3661                 Con_Print(CON_WARN "Mod_BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3662                 nodeportal->numpoints = 0;
3663         }
3664         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3665         {
3666                 Con_Print(CON_WARN "Mod_BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3667                 nodeportal->numpoints = 0;
3668         }
3669
3670         AddPortalToNodes(nodeportal, front, back);
3671
3672         // split the portals of this node along this node's plane and assign them to the children of this node
3673         // (migrating the portals downward through the tree)
3674         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3675         {
3676                 if (portal->nodes[0] == portal->nodes[1])
3677                         Host_Error("Mod_BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3678                 if (portal->nodes[0] == node)
3679                         side = 0;
3680                 else if (portal->nodes[1] == node)
3681                         side = 1;
3682                 else
3683                 {
3684                         Host_Error("Mod_BSP_RecursiveNodePortals: mislinked portal");
3685                         side = 0; // hush warning
3686                 }
3687                 nextportal = portal->next[side];
3688                 if (!portal->numpoints)
3689                         continue;
3690
3691                 other_node = portal->nodes[!side];
3692                 RemovePortalFromNodes(portal);
3693
3694                 // cut the portal into two portals, one on each side of the node plane
3695                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
3696
3697                 if (!numfrontpoints)
3698                 {
3699                         if (side == 0)
3700                                 AddPortalToNodes(portal, back, other_node);
3701                         else
3702                                 AddPortalToNodes(portal, other_node, back);
3703                         continue;
3704                 }
3705                 if (!numbackpoints)
3706                 {
3707                         if (side == 0)
3708                                 AddPortalToNodes(portal, front, other_node);
3709                         else
3710                                 AddPortalToNodes(portal, other_node, front);
3711                         continue;
3712                 }
3713
3714                 // the portal is split
3715                 splitportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3716                 temp = splitportal->chain;
3717                 *splitportal = *portal;
3718                 splitportal->chain = temp;
3719                 for (i = 0;i < numbackpoints*3;i++)
3720                         splitportal->points[i] = backpoints[i];
3721                 splitportal->numpoints = numbackpoints;
3722                 for (i = 0;i < numfrontpoints*3;i++)
3723                         portal->points[i] = frontpoints[i];
3724                 portal->numpoints = numfrontpoints;
3725
3726                 if (side == 0)
3727                 {
3728                         AddPortalToNodes(portal, front, other_node);
3729                         AddPortalToNodes(splitportal, back, other_node);
3730                 }
3731                 else
3732                 {
3733                         AddPortalToNodes(portal, other_node, front);
3734                         AddPortalToNodes(splitportal, other_node, back);
3735                 }
3736         }
3737
3738         Mod_BSP_RecursiveNodePortals(front);
3739         Mod_BSP_RecursiveNodePortals(back);
3740
3741         portalpointsbufferoffset -= 6*MAX_PORTALPOINTS;
3742 }
3743
3744 static void Mod_BSP_MakePortals(void)
3745 {
3746         Mem_ExpandableArray_NewArray(&portalarray, loadmodel->mempool, sizeof(portal_t), 1020*1024/sizeof(portal_t));
3747         portalpointsbufferoffset = 0;
3748         portalpointsbuffersize = 6*MAX_PORTALPOINTS*128;
3749         portalpointsbuffer = (double *)Mem_Alloc(loadmodel->mempool, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3750         Mod_BSP_RecursiveNodePortals(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3751         Mem_Free(portalpointsbuffer);
3752         portalpointsbuffer = NULL;
3753         portalpointsbufferoffset = 0;
3754         portalpointsbuffersize = 0;
3755         Mod_BSP_FinalizePortals();
3756         Mem_ExpandableArray_FreeArray(&portalarray);
3757 }
3758
3759 //Returns PVS data for a given point
3760 //(note: can return NULL)
3761 static unsigned char *Mod_BSP_GetPVS(dp_model_t *model, const vec3_t p)
3762 {
3763         mnode_t *node;
3764         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
3765         while (node->plane)
3766                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3767         if (((mleaf_t *)node)->clusterindex >= 0)
3768                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3769         else
3770                 return NULL;
3771 }
3772
3773 static void Mod_BSP_FatPVS_RecursiveBSPNode(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3774 {
3775         while (node->plane)
3776         {
3777                 float d = PlaneDiff(org, node->plane);
3778                 if (d > radius)
3779                         node = node->children[0];
3780                 else if (d < -radius)
3781                         node = node->children[1];
3782                 else
3783                 {
3784                         // go down both sides
3785                         Mod_BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3786                         node = node->children[1];
3787                 }
3788         }
3789         // if this leaf is in a cluster, accumulate the pvs bits
3790         if (((mleaf_t *)node)->clusterindex >= 0)
3791         {
3792                 int i;
3793                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3794                 for (i = 0;i < pvsbytes;i++)
3795                         pvsbuffer[i] |= pvs[i];
3796         }
3797 }
3798
3799 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3800 //of the given point.
3801 static int Mod_BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3802 {
3803         int bytes = model->brush.num_pvsclusterbytes;
3804         bytes = min(bytes, pvsbufferlength);
3805         if (r_novis.integer || r_trippy.integer || !model->brush.num_pvsclusters || !Mod_BSP_GetPVS(model, org))
3806         {
3807                 memset(pvsbuffer, 0xFF, bytes);
3808                 return bytes;
3809         }
3810         if (!merge)
3811                 memset(pvsbuffer, 0, bytes);
3812         Mod_BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
3813         return bytes;
3814 }
3815
3816 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3817 {
3818         vec3_t size;
3819         const hull_t *hull;
3820
3821         VectorSubtract(inmaxs, inmins, size);
3822         if (cmodel->brush.ishlbsp)
3823         {
3824                 if (size[0] < 3)
3825                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3826                 else if (size[0] <= 32)
3827                 {
3828                         if (size[2] < 54) // pick the nearest of 36 or 72
3829                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3830                         else
3831                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3832                 }
3833                 else
3834                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3835         }
3836         else
3837         {
3838                 if (size[0] < 3)
3839                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3840                 else if (size[0] <= 32)
3841                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3842                 else
3843                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3844         }
3845         VectorCopy(inmins, outmins);
3846         VectorAdd(inmins, hull->clip_size, outmaxs);
3847 }
3848
3849 void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask);
3850
3851 void Mod_2PSB_Load(dp_model_t *mod, void *buffer, void *bufferend)
3852 {
3853         mod->brush.isbsp2 = true;
3854         mod->brush.isbsp2rmqe = true; // like bsp2 except leaf/node bounds are 16bit (unexpanded)
3855         mod->modeldatatypestring = "Q1BSP2rmqe";
3856         Mod_Q1BSP_Load(mod, buffer, bufferend);
3857 }
3858
3859 void Mod_BSP2_Load(dp_model_t *mod, void *buffer, void *bufferend)
3860 {
3861         mod->brush.isbsp2 = true;
3862         mod->modeldatatypestring = "Q1BSP2";
3863         Mod_Q1BSP_Load(mod, buffer, bufferend);
3864 }
3865
3866 void Mod_HLBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3867 {
3868         mod->brush.ishlbsp = true;
3869         mod->modeldatatypestring = "HLBSP";
3870         Mod_Q1BSP_Load(mod, buffer, bufferend);
3871 }
3872
3873 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3874 {
3875         int i, j, k;
3876         sizebuf_t lumpsb[HEADER_LUMPS];
3877         mmodel_t *bm;
3878         float dist, modelyawradius, modelradius;
3879         msurface_t *surface;
3880         hullinfo_t hullinfo;
3881         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3882         model_brush_lightstyleinfo_t styleinfo[256];
3883         unsigned char *datapointer;
3884         sizebuf_t sb;
3885
3886         MSG_InitReadBuffer(&sb, (unsigned char *)buffer, (unsigned char *)bufferend - (unsigned char *)buffer);
3887
3888         mod->type = mod_brushq1;
3889
3890         mod->brush.ishlbsp = false;
3891         mod->brush.isbsp2rmqe = false;
3892         mod->brush.isbsp2 = false;
3893         mod->brush.isq2bsp = false;
3894         mod->brush.isq3bsp = false;
3895         mod->brush.skymasking = true;
3896         i = MSG_ReadLittleLong(&sb);
3897
3898         if(!mod->modeldatatypestring)
3899                 mod->modeldatatypestring = "Q1BSP";
3900
3901 // fill in hull info
3902         VectorClear (hullinfo.hullsizes[0][0]);
3903         VectorClear (hullinfo.hullsizes[0][1]);
3904         if (mod->brush.ishlbsp)
3905         {
3906                 hullinfo.filehulls = 4;
3907                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3908                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3909                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3910                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3911                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3912                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3913         }
3914         else
3915         {
3916                 hullinfo.filehulls = 4;
3917                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3918                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3919                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3920                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3921         }
3922
3923 // read lumps
3924         for (i = 0; i < HEADER_LUMPS; i++)
3925         {
3926                 int offset = MSG_ReadLittleLong(&sb);
3927                 int size = MSG_ReadLittleLong(&sb);
3928                 if (offset < 0 || offset + size > sb.cursize)
3929                         Host_Error("Mod_Q1BSP_Load: %s has invalid lump %i (offset %i, size %i, file size %i)\n", mod->name, i, offset, size, (int)sb.cursize);
3930                 MSG_InitReadBuffer(&lumpsb[i], sb.data + offset, size);
3931         }
3932
3933         mod->soundfromcenter = true;
3934         mod->TraceBox = Mod_Q1BSP_TraceBox;
3935         mod->TraceLine = Mod_Q1BSP_TraceLine;
3936         mod->TracePoint = Mod_Q1BSP_TracePoint;
3937         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3938         mod->TraceLineAgainstSurfaces = Mod_Q1BSP_TraceLineAgainstSurfaces;
3939         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3940         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3941         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3942         mod->brush.GetPVS = Mod_BSP_GetPVS;
3943         mod->brush.FatPVS = Mod_BSP_FatPVS;
3944         mod->brush.BoxTouchingPVS = Mod_BSP_BoxTouchingPVS;
3945         mod->brush.BoxTouchingLeafPVS = Mod_BSP_BoxTouchingLeafPVS;
3946         mod->brush.BoxTouchingVisibleLeafs = Mod_BSP_BoxTouchingVisibleLeafs;
3947         mod->brush.FindBoxClusters = Mod_BSP_FindBoxClusters;
3948         mod->brush.LightPoint = Mod_BSP_LightPoint;
3949         mod->brush.FindNonSolidLocation = Mod_BSP_FindNonSolidLocation;
3950         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3951         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3952         mod->brush.PointInLeaf = Mod_BSP_PointInLeaf;
3953         mod->Draw = R_Mod_Draw;
3954         mod->DrawDepth = R_Mod_DrawDepth;
3955         mod->DrawDebug = R_Mod_DrawDebug;
3956         mod->DrawPrepass = R_Mod_DrawPrepass;
3957         mod->GetLightInfo = R_Mod_GetLightInfo;
3958         mod->CompileShadowMap = R_Mod_CompileShadowMap;
3959         mod->DrawShadowMap = R_Mod_DrawShadowMap;
3960         mod->DrawLight = R_Mod_DrawLight;
3961
3962 // load into heap
3963
3964         mod->brush.qw_md4sum = 0;
3965         mod->brush.qw_md4sum2 = 0;
3966         for (i = 0;i < HEADER_LUMPS;i++)
3967         {
3968                 int temp;
3969                 if (i == LUMP_ENTITIES)
3970                         continue;
3971                 temp = Com_BlockChecksum(lumpsb[i].data, lumpsb[i].cursize);
3972                 mod->brush.qw_md4sum ^= LittleLong(temp);
3973                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3974                         continue;
3975                 mod->brush.qw_md4sum2 ^= LittleLong(temp);
3976         }
3977
3978         Mod_Q1BSP_LoadEntities(&lumpsb[LUMP_ENTITIES]);
3979         Mod_Q1BSP_LoadVertexes(&lumpsb[LUMP_VERTEXES]);
3980         Mod_Q1BSP_LoadEdges(&lumpsb[LUMP_EDGES]);
3981         Mod_Q1BSP_LoadSurfedges(&lumpsb[LUMP_SURFEDGES]);
3982         Mod_Q1BSP_LoadTextures(&lumpsb[LUMP_TEXTURES]);
3983         Mod_Q1BSP_LoadLighting(&lumpsb[LUMP_LIGHTING]);
3984         Mod_Q1BSP_LoadPlanes(&lumpsb[LUMP_PLANES]);
3985         Mod_Q1BSP_LoadTexinfo(&lumpsb[LUMP_TEXINFO]);
3986         Mod_Q1BSP_LoadFaces(&lumpsb[LUMP_FACES]);
3987         Mod_Q1BSP_LoadLeaffaces(&lumpsb[LUMP_MARKSURFACES]);
3988         Mod_Q1BSP_LoadVisibility(&lumpsb[LUMP_VISIBILITY]);
3989         // load submodels before leafs because they contain the number of vis leafs
3990         Mod_Q1BSP_LoadSubmodels(&lumpsb[LUMP_MODELS], &hullinfo);
3991         Mod_Q1BSP_LoadLeafs(&lumpsb[LUMP_LEAFS]);
3992         Mod_Q1BSP_LoadNodes(&lumpsb[LUMP_NODES]);
3993         Mod_Q1BSP_LoadClipnodes(&lumpsb[LUMP_CLIPNODES], &hullinfo);
3994
3995         for (i = 0; i < HEADER_LUMPS; i++)
3996                 if (lumpsb[i].readcount != lumpsb[i].cursize && i != LUMP_TEXTURES && i != LUMP_LIGHTING)
3997                         Host_Error("Lump %i incorrectly loaded (readcount %i, size %i)\n", i, lumpsb[i].readcount, lumpsb[i].cursize);
3998
3999         // check if the map supports transparent water rendering
4000         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
4001
4002         // we don't need the compressed pvs data anymore
4003         if (mod->brushq1.data_compressedpvs)
4004                 Mem_Free(mod->brushq1.data_compressedpvs);
4005         mod->brushq1.data_compressedpvs = NULL;
4006         mod->brushq1.num_compressedpvs = 0;
4007
4008         Mod_Q1BSP_MakeHull0();
4009         if (mod_bsp_portalize.integer)
4010                 Mod_BSP_MakePortals();
4011
4012         mod->numframes = 2;             // regular and alternate animation
4013         mod->numskins = 1;
4014
4015         if (loadmodel->brush.numsubmodels)
4016                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
4017
4018         // LadyHavoc: to clear the fog around the original quake submodel code, I
4019         // will explain:
4020         // first of all, some background info on the submodels:
4021         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
4022         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
4023         // now the weird for loop itself:
4024         // the loop functions in an odd way, on each iteration it sets up the
4025         // current 'mod' model (which despite the confusing code IS the model of
4026         // the number i), at the end of the loop it duplicates the model to become
4027         // the next submodel, and loops back to set up the new submodel.
4028
4029         // LadyHavoc: now the explanation of my sane way (which works identically):
4030         // set up the world model, then on each submodel copy from the world model
4031         // and set up the submodel with the respective model info.
4032         totalstylesurfaces = 0;
4033         totalstyles = 0;
4034         for (i = 0;i < mod->brush.numsubmodels;i++)
4035         {
4036                 memset(stylecounts, 0, sizeof(stylecounts));
4037                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
4038                 {
4039                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
4040                         for (j = 0;j < MAXLIGHTMAPS;j++)
4041                                 stylecounts[surface->lightmapinfo->styles[j]]++;
4042                 }
4043                 for (k = 0;k < 255;k++)
4044                 {
4045                         totalstyles++;
4046                         if (stylecounts[k])
4047                                 totalstylesurfaces += stylecounts[k];
4048                 }
4049         }
4050         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
4051         for (i = 0;i < mod->brush.numsubmodels;i++)
4052         {
4053                 // LadyHavoc: this code was originally at the end of this loop, but
4054                 // has been transformed to something more readable at the start here.
4055
4056                 if (i > 0)
4057                 {
4058                         char name[10];
4059                         // duplicate the basic information
4060                         dpsnprintf(name, sizeof(name), "*%i", i);
4061                         mod = Mod_FindName(name, loadmodel->name);
4062                         // copy the base model to this one
4063                         *mod = *loadmodel;
4064                         // rename the clone back to its proper name
4065                         strlcpy(mod->name, name, sizeof(mod->name));
4066                         mod->brush.parentmodel = loadmodel;
4067                         // textures and memory belong to the main model
4068                         mod->texturepool = NULL;
4069                         mod->mempool = NULL;
4070                         mod->brush.GetPVS = NULL;
4071                         mod->brush.FatPVS = NULL;
4072                         mod->brush.BoxTouchingPVS = NULL;
4073                         mod->brush.BoxTouchingLeafPVS = NULL;
4074                         mod->brush.BoxTouchingVisibleLeafs = NULL;
4075                         mod->brush.FindBoxClusters = NULL;
4076                         mod->brush.LightPoint = NULL;
4077                         mod->brush.AmbientSoundLevelsForPoint = NULL;
4078                 }
4079
4080                 mod->brush.submodel = i;
4081
4082                 if (loadmodel->brush.submodels)
4083                         loadmodel->brush.submodels[i] = mod;
4084
4085                 bm = &mod->brushq1.submodels[i];
4086
4087                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
4088                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
4089                 {
4090                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
4091                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
4092                 }
4093
4094                 mod->firstmodelsurface = bm->firstface;
4095                 mod->nummodelsurfaces = bm->numfaces;
4096
4097                 // set node/leaf parents for this submodel
4098                 Mod_BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
4099
4100                 // this has to occur after hull info has been set, as it uses Mod_Q1BSP_PointSuperContents
4101                 Mod_Q1BSP_AssignNoShadowSkySurfaces(mod);
4102
4103                 // make the model surface list (used by shadowing/lighting)
4104                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
4105                 Mod_MakeSortedSurfaces(mod);
4106
4107                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
4108                 // (previously this code measured the radius of the vertices of surfaces in the submodel, but that broke submodels that contain only CLIP brushes, which do not produce surfaces)
4109                 VectorCopy(bm->mins, mod->normalmins);
4110                 VectorCopy(bm->maxs, mod->normalmaxs);
4111                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
4112                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
4113                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
4114                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
4115                 modelradius = modelyawradius + modelradius * modelradius;
4116                 modelyawradius = sqrt(modelyawradius);
4117                 modelradius = sqrt(modelradius);
4118                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
4119                 mod->yawmins[2] = mod->normalmins[2];
4120                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
4121                 mod->yawmaxs[2] = mod->normalmaxs[2];
4122                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
4123                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
4124                 mod->radius = modelradius;
4125                 mod->radius2 = modelradius * modelradius;
4126
4127                 // this gets altered below if sky or water is used
4128                 mod->DrawSky = NULL;
4129                 mod->DrawAddWaterPlanes = NULL;
4130
4131                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
4132                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
4133                 if (mod->nummodelsurfaces)
4134                 {
4135                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
4136                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
4137                                         break;
4138                         if (j < mod->nummodelsurfaces)
4139                                 mod->DrawSky = R_Mod_DrawSky;
4140
4141                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
4142                                 if (surface->texture && surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
4143                                         break;
4144                         if (j < mod->nummodelsurfaces)
4145                                 mod->DrawAddWaterPlanes = R_Mod_DrawAddWaterPlanes;
4146
4147                         // build lightstyle update chains
4148                         // (used to rapidly mark lightmapupdateflags on many surfaces
4149                         // when d_lightstylevalue changes)
4150                         memset(stylecounts, 0, sizeof(stylecounts));
4151                         for (k = 0;k < mod->nummodelsurfaces;k++)
4152                         {
4153                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
4154                                 for (j = 0;j < MAXLIGHTMAPS;j++)
4155                                         stylecounts[surface->lightmapinfo->styles[j]]++;
4156                         }
4157                         mod->brushq1.num_lightstyles = 0;
4158                         for (k = 0;k < 255;k++)
4159                         {
4160                                 if (stylecounts[k])
4161                                 {
4162                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
4163                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
4164                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
4165                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
4166                                         remapstyles[k] = mod->brushq1.num_lightstyles;
4167                                         mod->brushq1.num_lightstyles++;
4168                                 }
4169                         }
4170                         for (k = 0;k < mod->nummodelsurfaces;k++)
4171                         {
4172                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
4173                                 for (j = 0;j < MAXLIGHTMAPS;j++)
4174                                 {
4175                                         if (surface->lightmapinfo->styles[j] != 255)
4176                                         {
4177                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
4178                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
4179                                         }
4180                                 }
4181                         }
4182                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
4183                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
4184                 }
4185                 else
4186                 {
4187                         // LadyHavoc: empty submodel(lacrima.bsp has such a glitch)
4188                         Con_Printf(CON_WARN "warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
4189                 }
4190                 //mod->brushq1.num_visleafs = bm->visleafs;
4191
4192                 // build a Bounding Interval Hierarchy for culling triangles in light rendering
4193                 Mod_MakeCollisionBIH(mod, true, &mod->render_bih);
4194
4195                 if (mod_q1bsp_polygoncollisions.integer)
4196                 {
4197                         mod->collision_bih = mod->render_bih;
4198                         // point traces and contents checks still use the bsp tree
4199                         mod->TraceLine = Mod_CollisionBIH_TraceLine;
4200                         mod->TraceBox = Mod_CollisionBIH_TraceBox;
4201                         mod->TraceBrush = Mod_CollisionBIH_TraceBrush;
4202                         mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLineAgainstSurfaces;
4203                 }
4204
4205                 // generate VBOs and other shared data before cloning submodels
4206                 if (i == 0)
4207                 {
4208                         Mod_BuildVBOs();
4209                         Mod_Q1BSP_LoadMapBrushes();
4210                         //Mod_Q1BSP_ProcessLightList();
4211                 }
4212         }
4213
4214         Con_DPrintf("Stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
4215 }
4216
4217 int Mod_Q2BSP_SuperContentsFromNativeContents(int nativecontents)
4218 {
4219         int supercontents = 0;
4220         if (nativecontents & CONTENTSQ2_SOLID)
4221                 supercontents |= SUPERCONTENTS_SOLID;
4222         if (nativecontents & CONTENTSQ2_WATER)
4223                 supercontents |= SUPERCONTENTS_WATER;
4224         if (nativecontents & CONTENTSQ2_SLIME)
4225                 supercontents |= SUPERCONTENTS_SLIME;
4226         if (nativecontents & CONTENTSQ2_LAVA)
4227                 supercontents |= SUPERCONTENTS_LAVA;
4228         if (nativecontents & CONTENTSQ2_MONSTER)
4229                 supercontents |= SUPERCONTENTS_BODY;
4230         if (nativecontents & CONTENTSQ2_DEADMONSTER)
4231                 supercontents |= SUPERCONTENTS_CORPSE;
4232         if (nativecontents & CONTENTSQ2_PLAYERCLIP)
4233                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
4234         if (nativecontents & CONTENTSQ2_MONSTERCLIP)
4235                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
4236         if (!(nativecontents & CONTENTSQ2_TRANSLUCENT))
4237                 supercontents |= SUPERCONTENTS_OPAQUE;
4238         return supercontents;
4239 }
4240
4241 int Mod_Q2BSP_NativeContentsFromSuperContents(int supercontents)
4242 {
4243         int nativecontents = 0;
4244         if (supercontents & SUPERCONTENTS_SOLID)
4245                 nativecontents |= CONTENTSQ2_SOLID;
4246         if (supercontents & SUPERCONTENTS_WATER)
4247                 nativecontents |= CONTENTSQ2_WATER;
4248         if (supercontents & SUPERCONTENTS_SLIME)
4249                 nativecontents |= CONTENTSQ2_SLIME;
4250         if (supercontents & SUPERCONTENTS_LAVA)
4251                 nativecontents |= CONTENTSQ2_LAVA;
4252         if (supercontents & SUPERCONTENTS_BODY)
4253                 nativecontents |= CONTENTSQ2_MONSTER;
4254         if (supercontents & SUPERCONTENTS_CORPSE)
4255                 nativecontents |= CONTENTSQ2_DEADMONSTER;
4256         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
4257                 nativecontents |= CONTENTSQ2_PLAYERCLIP;
4258         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
4259                 nativecontents |= CONTENTSQ2_MONSTERCLIP;
4260         if (!(supercontents & SUPERCONTENTS_OPAQUE))
4261                 nativecontents |= CONTENTSQ2_TRANSLUCENT;
4262         return nativecontents;
4263 }
4264
4265 static void Mod_Q2BSP_LoadVisibility(sizebuf_t *sb)
4266 {
4267         int i, count;
4268         loadmodel->brushq1.num_compressedpvs = 0;
4269         loadmodel->brushq1.data_compressedpvs = NULL;
4270         loadmodel->brush.num_pvsclusters = 0;
4271         loadmodel->brush.num_pvsclusterbytes = 0;
4272         loadmodel->brush.data_pvsclusters = NULL;
4273
4274         if (!sb->cursize)
4275                 return;
4276
4277         count = MSG_ReadLittleLong(sb);
4278         loadmodel->brush.num_pvsclusters = count;
4279         loadmodel->brush.num_pvsclusterbytes = (count+7)>>3;
4280         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*loadmodel->brush.num_pvsclusterbytes);
4281         for (i = 0;i < count;i++)
4282         {
4283                 int pvsofs = MSG_ReadLittleLong(sb);
4284                 /*int phsofs = */MSG_ReadLittleLong(sb);
4285                 // decompress the vis data for this cluster
4286                 // (note this accesses the underlying data store of sb, which is kind of evil)
4287                 Mod_BSP_DecompressVis(sb->data + pvsofs, sb->data + sb->cursize, loadmodel->brush.data_pvsclusters + i * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (i+1) * loadmodel->brush.num_pvsclusterbytes);
4288         }
4289         // hush the loading error check later - we had to do random access on this lump, so we didn't read to the end
4290         sb->readcount = sb->cursize;
4291 }
4292
4293 static void Mod_Q2BSP_LoadNodes(sizebuf_t *sb)
4294 {
4295         int                     i, j, count, p, child[2];
4296         mnode_t         *out;
4297         int structsize = 28;
4298
4299         if (sb->cursize % structsize)
4300                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
4301         count = sb->cursize / structsize;
4302         if (count == 0)
4303                 Host_Error("Mod_Q2BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
4304         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
4305
4306         loadmodel->brush.data_nodes = out;
4307         loadmodel->brush.num_nodes = count;
4308
4309         for ( i=0 ; i<count ; i++, out++)
4310         {
4311                 p = MSG_ReadLittleLong(sb);
4312                 out->plane = loadmodel->brush.data_planes + p;
4313                 child[0] = MSG_ReadLittleLong(sb);
4314                 child[1] = MSG_ReadLittleLong(sb);
4315                 out->mins[0] = MSG_ReadLittleShort(sb);
4316                 out->mins[1] = MSG_ReadLittleShort(sb);
4317                 out->mins[2] = MSG_ReadLittleShort(sb);
4318                 out->maxs[0] = MSG_ReadLittleShort(sb);
4319                 out->maxs[1] = MSG_ReadLittleShort(sb);
4320                 out->maxs[2] = MSG_ReadLittleShort(sb);
4321                 out->firstsurface = (unsigned short)MSG_ReadLittleShort(sb);
4322                 out->numsurfaces = (unsigned short)MSG_ReadLittleShort(sb);
4323                 if (out->firstsurface + out->numsurfaces > (unsigned int)loadmodel->num_surfaces)
4324                 {
4325                         Con_Printf("Mod_Q2BSP_LoadNodes: invalid surface index range %i+%i (file has only %i surfaces)\n", out->firstsurface, out->numsurfaces, loadmodel->num_surfaces);
4326                         out->firstsurface = 0;
4327                         out->numsurfaces = 0;
4328                 }
4329                 for (j=0 ; j<2 ; j++)
4330                 {
4331                         p = child[j];
4332                         if (p >= 0)
4333                         {
4334                                 if (p < loadmodel->brush.num_nodes)
4335                                         out->children[j] = loadmodel->brush.data_nodes + p;
4336                                 else
4337                                 {
4338                                         Con_Printf("Mod_Q2BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
4339                                         // map it to the solid leaf
4340                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
4341                                 }
4342                         }
4343                         else
4344                         {
4345                                 // get leaf index as a positive value starting at 0 (-1 becomes 0, -2 becomes 1, etc)
4346                                 p = -(p+1);
4347                                 if (p < loadmodel->brush.num_leafs)
4348                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
4349                                 else
4350                                 {
4351                                         Con_Printf("Mod_Q2BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
4352                                         // map it to the solid leaf
4353                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
4354                                 }
4355                         }
4356                 }
4357         }
4358
4359         Mod_BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);        // sets nodes and leafs
4360 }
4361
4362 static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
4363 {
4364         mtexinfo_t *out;
4365         int i, l, count;
4366         int structsize = 76;
4367         int maxtextures = 1024; // hardcoded limit of quake2 engine, so we may as well use it as an upper bound
4368         char filename[MAX_QPATH];
4369
4370         if (sb->cursize % structsize)
4371                 Host_Error("Mod_Q2BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
4372         count = sb->cursize / structsize;
4373         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4374         loadmodel->brushq1.texinfo = out;
4375         loadmodel->brushq1.numtexinfo = count;
4376         loadmodel->num_texturesperskin = 0;
4377         loadmodel->data_textures = (texture_t*)Mem_Alloc(loadmodel->mempool, maxtextures * sizeof(texture_t));
4378
4379         for (i = 0;i < count;i++, out++)
4380         {
4381                 int j, k;
4382                 for (k = 0;k < 2;k++)
4383                         for (j = 0;j < 4;j++)
4384                                 out->vecs[k][j] = MSG_ReadLittleFloat(sb);
4385
4386                 out->q2flags = MSG_ReadLittleLong(sb);
4387                 out->q2value = MSG_ReadLittleLong(sb);
4388                 MSG_ReadBytes(sb, 32, (unsigned char*)out->q2texture);
4389                 out->q2texture[31] = 0; // make absolutely sure it is terminated
4390                 out->q2nexttexinfo = MSG_ReadLittleLong(sb);
4391
4392                 // find an existing match for the texture if possible
4393                 dpsnprintf(filename, sizeof(filename), "textures/%s.wal", out->q2texture);
4394                 for (j = 0;j < loadmodel->num_texturesperskin;j++)
4395                         if (!strcmp(filename, loadmodel->data_textures[j].name)
4396                          && out->q2flags == loadmodel->data_textures[j].q2flags
4397                          && out->q2value == loadmodel->data_textures[j].q2value)
4398                                 break;
4399                 // if we don't find the texture, store the new texture
4400                 if (j == loadmodel->num_texturesperskin)
4401                 {
4402                         if (loadmodel->num_texturesperskin < maxtextures)
4403                         {
4404                                 texture_t *tx = loadmodel->data_textures + j;
4405                                 int q2flags = out->q2flags;
4406                                 unsigned char *walfile = NULL;
4407                                 fs_offset_t walfilesize = 0;
4408                                 Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, tx, filename, true, true, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
4409                                 // now read the .wal file to get metadata (even if a .tga was overriding it, we still need the wal data)
4410                                 walfile = FS_LoadFile(filename, tempmempool, true, &walfilesize);
4411                                 if (walfile)
4412                                 {
4413                                         int w, h;
4414                                         LoadWAL_GetMetadata(walfile, (int)walfilesize, &w, &h, NULL, NULL, &tx->q2contents, NULL);
4415                                         tx->width = w;
4416                                         tx->height = h;
4417                                         Mem_Free(walfile);
4418                                 }
4419                                 else
4420                                 {
4421                                         tx->width = 16;
4422                                         tx->height = 16;
4423                                 }
4424                                 tx->q2flags = out->q2flags;
4425                                 tx->q2value = out->q2value;
4426                                 // also modify the texture to have the correct contents and such based on flags
4427                                 // note that we create multiple texture_t structures if q2flags differs
4428                                 if (q2flags & Q2SURF_LIGHT)
4429                                 {
4430                                         // doesn't mean anything to us
4431                                 }
4432                                 if (q2flags & Q2SURF_SLICK)
4433                                 {
4434                                         // would be nice to support...
4435                                 }
4436                                 if (q2flags & Q2SURF_SKY)
4437                                 {
4438                                         // sky is a rather specific thing
4439                                         q2flags &= ~Q2SURF_NODRAW; // quake2 had a slightly different meaning than we have in mind here...
4440                                         tx->basematerialflags = MATERIALFLAG_SKY;
4441                                         tx->supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE;
4442                                         tx->surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
4443                                 }
4444                                 if (q2flags & Q2SURF_WARP)
4445                                 {
4446                                         // we use a scroll instead of a warp
4447                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_FULLBRIGHT;
4448                                         // if it's also transparent, we can enable the WATERSHADER
4449                                         // but we do not set the WATERALPHA flag because we don't
4450                                         // want to honor r_wateralpha in q2bsp
4451                                         // (it would go against the artistic intent)
4452                                         if (q2flags & (Q2SURF_TRANS33 | Q2SURF_TRANS66))
4453                                                 tx->basematerialflags |= MATERIALFLAG_WATERSHADER;
4454                                 }
4455                                 if (q2flags & Q2SURF_TRANS33)
4456                                 {
4457                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED;
4458                                         tx->basealpha = 1.0f / 3.0f;
4459                                         tx->supercontents &= ~SUPERCONTENTS_OPAQUE;
4460                                         if (tx->q2contents & Q2CONTENTS_SOLID)
4461                                                 tx->q2contents = (tx->q2contents & ~Q2CONTENTS_SOLID) | Q2CONTENTS_WINDOW;
4462                                 }
4463                                 if (q2flags & Q2SURF_TRANS66)
4464                                 {
4465                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED;
4466                                         tx->basealpha = 2.0f / 3.0f;
4467                                         tx->supercontents &= ~SUPERCONTENTS_OPAQUE;
4468                                         if (tx->q2contents & Q2CONTENTS_SOLID)
4469                                                 tx->q2contents = (tx->q2contents & ~Q2CONTENTS_SOLID) | Q2CONTENTS_WINDOW;
4470                                 }
4471                                 if ((q2flags & Q2SURF_FLOWING) && tx->materialshaderpass != NULL)
4472                                 {
4473                                         tx->materialshaderpass->tcmods[0].tcmod = Q3TCMOD_SCROLL;
4474                                         if (q2flags & Q2SURF_WARP)
4475                                                 tx->materialshaderpass->tcmods[0].parms[0] = -0.5f;
4476                                         else
4477                                                 tx->materialshaderpass->tcmods[0].parms[0] = -1.6f;
4478                                         tx->materialshaderpass->tcmods[0].parms[1] = 0.0f;
4479                                 }
4480                                 if (q2flags & Q2SURF_ALPHATEST)
4481                                 {
4482                                         // KMQUAKE2 and other modded engines added this flag for lit alpha tested surfaces
4483                                         tx->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
4484                                 }
4485                                 else if (q2flags & (Q2SURF_TRANS33 | Q2SURF_TRANS66 | Q2SURF_WARP))
4486                                 {
4487                                         if (!mod_q2bsp_littransparentsurfaces.integer)
4488                                                 tx->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4489                                 }
4490                                 if (q2flags & Q2SURF_NODRAW)
4491                                 {
4492                                         tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4493                                 }
4494                                 if (tx->q2contents & (Q2CONTENTS_TRANSLUCENT | Q2CONTENTS_MONSTERCLIP | Q2CONTENTS_PLAYERCLIP))
4495                                         tx->q2contents |= Q2CONTENTS_DETAIL;
4496                                 if (!(tx->q2contents & (Q2CONTENTS_SOLID | Q2CONTENTS_WINDOW | Q2CONTENTS_AUX | Q2CONTENTS_LAVA | Q2CONTENTS_SLIME | Q2CONTENTS_WATER | Q2CONTENTS_MIST | Q2CONTENTS_PLAYERCLIP | Q2CONTENTS_MONSTERCLIP | Q2CONTENTS_MIST)))
4497                                         tx->q2contents |= Q2CONTENTS_SOLID;
4498                                 if (tx->q2flags & (Q2SURF_HINT | Q2SURF_SKIP))
4499                                         tx->q2contents = 0;
4500                                 tx->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(tx->q2contents);
4501                                 // set the current values to the base values
4502                                 tx->currentframe = tx;
4503                                 tx->currentskinframe = tx->materialshaderpass != NULL ? tx->materialshaderpass->skinframes[0] : NULL;
4504                                 tx->currentmaterialflags = tx->basematerialflags;
4505                                 loadmodel->num_texturesperskin++;
4506                                 loadmodel->num_textures = loadmodel->num_texturesperskin;
4507                         }
4508                         else
4509                         {
4510                                 Con_Printf("Mod_Q2BSP_LoadTexinfo: max textures reached (%i)\n", maxtextures);
4511                                 j = 0; // use first texture and give up
4512                         }
4513                 }
4514                 // store the index we found for this texture
4515                 out->textureindex = j;
4516         }
4517
4518         // realloc the textures array now that we know how many we actually need
4519         loadmodel->data_textures = (texture_t*)Mem_Realloc(loadmodel->mempool, loadmodel->data_textures, loadmodel->num_texturesperskin * sizeof(texture_t));
4520
4521         // now assemble the texture chains
4522         // if we encounter the textures out of order, the later ones won't mark the earlier ones in a sequence, so the earlier
4523         for (i = 0, out = loadmodel->brushq1.texinfo;i < count;i++, out++)
4524         {
4525                 int j, k;
4526                 texture_t *t = loadmodel->data_textures + out->textureindex;
4527                 t->currentframe = t; // fix the reallocated pointer
4528
4529                 // if this is not animated, skip it
4530                 // if this is already processed, skip it (part of an existing sequence)
4531                 if (out->q2nexttexinfo == 0 || t->animated)
4532                         continue;
4533
4534                 // store the array of frames to use
4535                 t->animated = 2; // q2bsp animation
4536                 t->anim_total[0] = 0;
4537                 t->anim_total[1] = 0;
4538                 // gather up to 10 frames (we don't support more)
4539                 for (j = i;j >= 0 && t->anim_total[0] < (int)(sizeof(t->anim_frames[0])/sizeof(t->anim_frames[0][0]));j = loadmodel->brushq1.texinfo[j].q2nexttexinfo)
4540                 {
4541                         // detect looping and stop there
4542                         if (t->anim_total[0] && loadmodel->brushq1.texinfo[j].textureindex == out->textureindex)
4543                                 break;
4544                         t->anim_frames[0][t->anim_total[0]++] = &loadmodel->data_textures[loadmodel->brushq1.texinfo[j].textureindex];
4545                 }
4546                 // we could look for the +a sequence here if this is the +0 sequence,
4547                 // but it seems that quake2 did not implement that (even though the
4548                 // files exist in the baseq2 content)
4549
4550                 // write the frame sequence to all the textures involved (just like
4551                 // in the q1bsp loader)
4552                 //
4553                 // note that this can overwrite the rest of the sequence - so if the
4554                 // start of a sequence is found later than the other parts of the
4555                 // sequence, it will go back and rewrite them correctly.
4556                 for (k = 0;k < t->anim_total[0];k++)
4557                 {
4558                         texture_t *txk = t->anim_frames[0][k];
4559                         txk->animated = t->animated;
4560                         txk->anim_total[0] = t->anim_total[0];
4561                         for (l = 0;l < t->anim_total[0];l++)
4562                                 txk->anim_frames[0][l] = t->anim_frames[0][l];
4563                 }
4564         }
4565 }
4566
4567 static void Mod_Q2BSP_LoadLighting(sizebuf_t *sb)
4568 {
4569         // LadyHavoc: this fits exactly the same format that we use in .lit files
4570         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize);
4571         MSG_ReadBytes(sb, sb->cursize, loadmodel->brushq1.lightdata);
4572 }
4573
4574 static void Mod_Q2BSP_LoadLeafs(sizebuf_t *sb)
4575 {
4576         mleaf_t *out;
4577         int i, j, count, firstmarksurface, nummarksurfaces, firstmarkbrush, nummarkbrushes;
4578         int structsize = 28;
4579
4580         if (sb->cursize % structsize)
4581                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
4582         count = sb->cursize / structsize;
4583         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
4584
4585         loadmodel->brush.data_leafs = out;
4586         loadmodel->brush.num_leafs = count;
4587
4588         // FIXME: this function could really benefit from some error checking
4589         for ( i=0 ; i<count ; i++, out++)
4590         {
4591                 out->contents = MSG_ReadLittleLong(sb);
4592                 out->clusterindex = MSG_ReadLittleShort(sb);
4593                 out->areaindex = MSG_ReadLittleShort(sb);
4594                 out->mins[0] = MSG_ReadLittleShort(sb);
4595                 out->mins[1] = MSG_ReadLittleShort(sb);
4596                 out->mins[2] = MSG_ReadLittleShort(sb);
4597                 out->maxs[0] = MSG_ReadLittleShort(sb);
4598                 out->maxs[1] = MSG_ReadLittleShort(sb);
4599                 out->maxs[2] = MSG_ReadLittleShort(sb);
4600
4601                 firstmarksurface = (unsigned short)MSG_ReadLittleShort(sb);
4602                 nummarksurfaces  = (unsigned short)MSG_ReadLittleShort(sb);
4603                 firstmarkbrush = (unsigned short)MSG_ReadLittleShort(sb);
4604                 nummarkbrushes  = (unsigned short)MSG_ReadLittleShort(sb);
4605
4606                 for (j = 0;j < 4;j++)
4607                         out->ambient_sound_level[j] = 0;
4608
4609                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
4610                 {
4611                         Con_Print("Mod_Q2BSP_LoadLeafs: invalid clusterindex\n");
4612                         out->clusterindex = -1;
4613                 }
4614
4615                 if (firstmarksurface >= 0 && firstmarksurface + nummarksurfaces <= loadmodel->brush.num_leafsurfaces)
4616                 {
4617                         out->firstleafsurface = loadmodel->brush.data_leafsurfaces + firstmarksurface;
4618                         out->numleafsurfaces = nummarksurfaces;
4619                 }
4620                 else
4621                 {
4622                         Con_Printf("Mod_Q2BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", firstmarksurface, firstmarksurface+nummarksurfaces, 0, loadmodel->brush.num_leafsurfaces);
4623                         out->firstleafsurface = NULL;
4624                         out->numleafsurfaces = 0;
4625                 }
4626
4627                 if (firstmarkbrush >= 0 && firstmarkbrush + nummarkbrushes <= loadmodel->brush.num_leafbrushes)
4628                 {
4629                         out->firstleafbrush = loadmodel->brush.data_leafbrushes + firstmarkbrush;
4630                         out->numleafbrushes = nummarkbrushes;
4631                 }
4632                 else
4633                 {
4634                         Con_Printf("Mod_Q2BSP_LoadLeafs: invalid leafbrush range %i:%i outside range %i:%i\n", firstmarkbrush, firstmarkbrush+nummarkbrushes, 0, loadmodel->brush.num_leafbrushes);
4635                         out->firstleafbrush = NULL;
4636                         out->numleafbrushes = 0;
4637                 }
4638         }
4639 }
4640
4641 static void Mod_Q2BSP_LoadLeafBrushes(sizebuf_t *sb)
4642 {
4643         int i, j;
4644         int structsize = 2;
4645
4646         if (sb->cursize % structsize)
4647                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
4648         loadmodel->brush.num_leafbrushes = sb->cursize / structsize;
4649         loadmodel->brush.data_leafbrushes = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafbrushes * sizeof(int));
4650
4651         for (i = 0;i < loadmodel->brush.num_leafbrushes;i++)
4652         {
4653                 j = (unsigned short) MSG_ReadLittleShort(sb);
4654                 if (j >= loadmodel->brush.num_brushes)
4655                         Host_Error("Mod_Q1BSP_LoadLeafBrushes: bad brush number");
4656                 loadmodel->brush.data_leafbrushes[i] = j;
4657         }
4658 }
4659
4660 static void Mod_Q2BSP_LoadBrushSides(sizebuf_t *sb)
4661 {
4662         q3mbrushside_t *out;
4663         int i, n, count;
4664         int structsize = 4;
4665
4666         if (sb->cursize % structsize)
4667                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4668         count = sb->cursize / structsize;
4669         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4670
4671         loadmodel->brush.data_brushsides = out;
4672         loadmodel->brush.num_brushsides = count;
4673
4674         for (i = 0;i < count;i++, out++)
4675         {
4676                 n = (unsigned short)MSG_ReadLittleShort(sb);
4677                 if (n < 0 || n >= loadmodel->brush.num_planes)
4678                         Host_Error("Mod_Q2BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4679                 out->plane = loadmodel->brush.data_planes + n;
4680                 n = MSG_ReadLittleShort(sb);
4681                 if (n >= 0)
4682                 {
4683                         if (n >= loadmodel->brushq1.numtexinfo)
4684                                 Host_Error("Mod_Q2BSP_LoadBrushSides: invalid texinfo index %i (%i texinfos)", n, loadmodel->brushq1.numtexinfo);
4685                         out->texture = loadmodel->data_textures + loadmodel->brushq1.texinfo[n].textureindex;
4686                 }
4687                 else
4688                 {
4689                         //Con_Printf("Mod_Q2BSP_LoadBrushSides: brushside %i has texinfo index %i < 0, changing to generic texture!\n", i, n);
4690                         out->texture = &mod_q1bsp_texture_solid;
4691                 }
4692         }
4693 }
4694
4695 static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
4696 {
4697         q3mbrush_t *out;
4698         int i, j, firstside, numsides, contents, count, maxplanes, q3surfaceflags, supercontents;
4699         colplanef_t *planes;
4700         int structsize = 12;
4701         qboolean brushmissingtextures;
4702         int numbrushesmissingtextures = 0;
4703         int numcreatedtextures = 0;
4704
4705         if (sb->cursize % structsize)
4706                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4707         count = sb->cursize / structsize;
4708         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4709
4710         loadmodel->brush.data_brushes = out;
4711         loadmodel->brush.num_brushes = count;
4712
4713         maxplanes = 0;
4714         planes = NULL;
4715
4716         for (i = 0; i < count; i++, out++)
4717         {
4718                 firstside = MSG_ReadLittleLong(sb);
4719                 numsides = MSG_ReadLittleLong(sb);
4720                 contents = MSG_ReadLittleLong(sb);
4721                 if (firstside < 0 || firstside + numsides > loadmodel->brush.num_brushsides)
4722                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", firstside, firstside + numsides, loadmodel->brush.num_brushsides);
4723
4724                 out->firstbrushside = loadmodel->brush.data_brushsides + firstside;
4725                 out->numbrushsides = numsides;
4726                 // convert the contents to our values
4727                 supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(contents);
4728
4729                 // problem: q2bsp brushes have contents but not a texture
4730                 // problem: q2bsp brushsides *may* have a texture or may not
4731                 // problem: all brushsides and brushes must have a texture for trace_hittexture functionality to work, and the collision code is engineered around this assumption
4732                 // solution: nasty hacks
4733                 brushmissingtextures = false;
4734                 out->texture = NULL;
4735                 for (j = 0; j < out->numbrushsides; j++)
4736                 {
4737                         if (out->firstbrushside[j].texture == &mod_q1bsp_texture_solid)
4738                                 brushmissingtextures = true;
4739                         else
4740                         {
4741                                 // if we can find a matching texture on a brush side we can use it instead of creating one
4742                                 if (out->firstbrushside[j].texture->supercontents == supercontents)
4743                                         out->texture = out->firstbrushside[j].texture;
4744                         }
4745                 }
4746                 if (brushmissingtextures || out->texture == NULL)
4747                 {
4748                         numbrushesmissingtextures++;
4749                         // if we didn't find any appropriate texture (matching contents), we'll have to create one
4750                         // we could search earlier ones for a matching one but that can be slow
4751                         if (out->texture == NULL)
4752                         {
4753                                 texture_t *validtexture;
4754                                 validtexture = (texture_t *)Mem_Alloc(loadmodel->mempool, sizeof(texture_t));
4755                                 dpsnprintf(validtexture->name, sizeof(validtexture->name), "brushcollision%i", numcreatedtextures);
4756                                 validtexture->surfaceflags = 0;
4757                                 validtexture->supercontents = supercontents;
4758                                 numcreatedtextures++;
4759                                 out->texture = validtexture;
4760                         }
4761                         // out->texture now contains a texture with appropriate contents, copy onto any missing sides
4762                         for (j = 0; j < out->numbrushsides; j++)
4763                                 if (out->firstbrushside[j].texture == &mod_q1bsp_texture_solid)
4764                                         out->firstbrushside[j].texture = out->texture;
4765                 }
4766
4767                 // make a colbrush from the brush
4768                 q3surfaceflags = 0;
4769                 // make a list of mplane_t structs to construct a colbrush from
4770                 if (maxplanes < out->numbrushsides)
4771                 {
4772                         maxplanes = out->numbrushsides;
4773                         if (planes)
4774                                 Mem_Free(planes);
4775                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4776                 }
4777                 for (j = 0;j < out->numbrushsides;j++)
4778                 {
4779                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4780                         planes[j].dist = out->firstbrushside[j].plane->dist;
4781                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4782                         planes[j].texture = out->firstbrushside[j].texture;
4783                         q3surfaceflags |= planes[j].q3surfaceflags;
4784                 }
4785                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
4786
4787                 // this whole loop can take a while (e.g. on redstarrepublic4)
4788                 CL_KeepaliveMessage(false);
4789         }
4790         if (planes)
4791                 Mem_Free(planes);
4792         if (numcreatedtextures)
4793                 Con_DPrintf("Mod_Q2BSP_LoadBrushes: %i brushes own sides that lack textures or have differing contents from the brush, %i textures have been created to describe these contents.\n", numbrushesmissingtextures, numcreatedtextures);
4794 }
4795
4796 static void Mod_Q2BSP_LoadPOP(sizebuf_t *sb)
4797 {
4798         // this is probably a "proof of purchase" lump of some sort, it seems to be 0 size in most bsp files (but not q2dm1.bsp for instance)
4799         sb->readcount = sb->cursize;
4800 }
4801
4802 static void Mod_Q2BSP_LoadAreas(sizebuf_t *sb)
4803 {
4804         // we currently don't use areas, they represent closable doors as vis blockers
4805         sb->readcount = sb->cursize;
4806 }
4807
4808 static void Mod_Q2BSP_LoadAreaPortals(sizebuf_t *sb)
4809 {
4810         // we currently don't use areas, they represent closable doors as vis blockers
4811         sb->readcount = sb->cursize;
4812 }
4813
4814 static void Mod_Q2BSP_LoadSubmodels(sizebuf_t *sb)
4815 {
4816         mmodel_t        *out;
4817         int                     i, count;
4818         int                     structsize = 48;
4819
4820         if (sb->cursize % structsize)
4821                 Host_Error ("Mod_Q2BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
4822
4823         count = sb->cursize / structsize;
4824         out = (mmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
4825
4826         loadmodel->brushq1.submodels = out;
4827         loadmodel->brush.numsubmodels = count;
4828
4829         // this is identical to the q1 submodel structure except for having 1 hull
4830         for (i = 0; i < count; i++, out++)
4831         {
4832                 // spread out the mins / maxs by a pixel
4833                 out->mins[0] = MSG_ReadLittleFloat(sb) - 1;
4834                 out->mins[1] = MSG_ReadLittleFloat(sb) - 1;
4835                 out->mins[2] = MSG_ReadLittleFloat(sb) - 1;
4836                 out->maxs[0] = MSG_ReadLittleFloat(sb) + 1;
4837                 out->maxs[1] = MSG_ReadLittleFloat(sb) + 1;
4838                 out->maxs[2] = MSG_ReadLittleFloat(sb) + 1;
4839                 out->origin[0] = MSG_ReadLittleFloat(sb);
4840                 out->origin[1] = MSG_ReadLittleFloat(sb);
4841                 out->origin[2] = MSG_ReadLittleFloat(sb);
4842                 out->headnode[0] = MSG_ReadLittleLong(sb);
4843                 out->firstface = MSG_ReadLittleLong(sb);
4844                 out->numfaces  = MSG_ReadLittleLong(sb);
4845         }
4846 }
4847
4848 static void Mod_Q2BSP_FindSubmodelBrushRange_r(dp_model_t *mod, mnode_t *node, int *first, int *last)
4849 {
4850         int i;
4851         mleaf_t *leaf;
4852         while (node->plane)
4853         {
4854                 Mod_Q2BSP_FindSubmodelBrushRange_r(mod, node->children[0], first, last);
4855                 node = node->children[1];
4856         }
4857         leaf = (mleaf_t*)node;
4858         for (i = 0;i < leaf->numleafbrushes;i++)
4859         {
4860                 int brushnum = leaf->firstleafbrush[i];
4861                 if (*first > brushnum)
4862                         *first = brushnum;
4863                 if (*last < brushnum)
4864                         *last = brushnum;
4865         }
4866 }
4867
4868 static void Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4869 {
4870         int i, j, k;
4871         sizebuf_t lumpsb[Q2HEADER_LUMPS];
4872         mmodel_t *bm;
4873         float dist, modelyawradius, modelradius;
4874         msurface_t *surface;
4875         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
4876         model_brush_lightstyleinfo_t styleinfo[256];
4877         unsigned char *datapointer;
4878         sizebuf_t sb;
4879
4880         MSG_InitReadBuffer(&sb, (unsigned char *)buffer, (unsigned char *)bufferend - (unsigned char *)buffer);
4881
4882         mod->type = mod_brushq2;
4883
4884         mod->brush.ishlbsp = false;
4885         mod->brush.isbsp2rmqe = false;
4886         mod->brush.isbsp2 = false;
4887         mod->brush.isq2bsp = true; // q1bsp loaders mostly work but we need a few tweaks
4888         mod->brush.isq3bsp = false;
4889         mod->brush.skymasking = true;
4890         mod->modeldatatypestring = "Q2BSP";
4891
4892         i = MSG_ReadLittleLong(&sb);
4893         if (i != Q2BSPMAGIC)
4894                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4895
4896         i = MSG_ReadLittleLong(&sb);
4897         if (i != Q2BSPVERSION)
4898                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4899
4900 // read lumps
4901         for (i = 0; i < Q2HEADER_LUMPS; i++)
4902         {
4903                 int offset = MSG_ReadLittleLong(&sb);
4904                 int size = MSG_ReadLittleLong(&sb);
4905                 if (offset < 0 || offset + size > sb.cursize)
4906                         Host_Error("Mod_Q2BSP_Load: %s has invalid lump %i (offset %i, size %i, file size %i)\n", mod->name, i, offset, size, (int)sb.cursize);
4907                 MSG_InitReadBuffer(&lumpsb[i], sb.data + offset, size);
4908         }
4909
4910         mod->soundfromcenter = true;
4911         mod->TracePoint = Mod_CollisionBIH_TracePoint;
4912         mod->TraceLine = Mod_CollisionBIH_TraceLine;
4913         mod->TraceBox = Mod_CollisionBIH_TraceBox;
4914         mod->TraceBrush = Mod_CollisionBIH_TraceBrush;
4915         mod->PointSuperContents = Mod_CollisionBIH_PointSuperContents;
4916         mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
4917         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
4918         mod->brush.SuperContentsFromNativeContents = Mod_Q2BSP_SuperContentsFromNativeContents;
4919         mod->brush.NativeContentsFromSuperContents = Mod_Q2BSP_NativeContentsFromSuperContents;
4920         mod->brush.GetPVS = Mod_BSP_GetPVS;
4921         mod->brush.FatPVS = Mod_BSP_FatPVS;
4922         mod->brush.BoxTouchingPVS = Mod_BSP_BoxTouchingPVS;
4923         mod->brush.BoxTouchingLeafPVS = Mod_BSP_BoxTouchingLeafPVS;
4924         mod->brush.BoxTouchingVisibleLeafs = Mod_BSP_BoxTouchingVisibleLeafs;
4925         mod->brush.FindBoxClusters = Mod_BSP_FindBoxClusters;
4926         mod->brush.LightPoint = Mod_BSP_LightPoint;
4927         mod->brush.FindNonSolidLocation = Mod_BSP_FindNonSolidLocation;
4928         mod->brush.AmbientSoundLevelsForPoint = NULL;
4929         mod->brush.RoundUpToHullSize = NULL;
4930         mod->brush.PointInLeaf = Mod_BSP_PointInLeaf;
4931         mod->Draw = R_Mod_Draw;
4932         mod->DrawDepth = R_Mod_DrawDepth;
4933         mod->DrawDebug = R_Mod_DrawDebug;
4934         mod->DrawPrepass = R_Mod_DrawPrepass;
4935         mod->GetLightInfo = R_Mod_GetLightInfo;
4936         mod->CompileShadowMap = R_Mod_CompileShadowMap;
4937         mod->DrawShadowMap = R_Mod_DrawShadowMap;
4938         mod->DrawLight = R_Mod_DrawLight;
4939
4940 // load into heap
4941
4942         mod->brush.qw_md4sum = 0;
4943         mod->brush.qw_md4sum2 = 0;
4944         for (i = 0;i < Q2HEADER_LUMPS;i++)
4945         {
4946                 int temp;
4947                 if (i == Q2LUMP_ENTITIES)
4948                         continue;
4949                 temp = Com_BlockChecksum(lumpsb[i].data, lumpsb[i].cursize);
4950                 mod->brush.qw_md4sum ^= LittleLong(temp);
4951                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4952                         continue;
4953                 mod->brush.qw_md4sum2 ^= LittleLong(temp);
4954         }
4955
4956         // many of these functions are identical to Q1 loaders, so we use those where possible
4957         Mod_Q1BSP_LoadEntities(&lumpsb[Q2LUMP_ENTITIES]);
4958         Mod_Q1BSP_LoadVertexes(&lumpsb[Q2LUMP_VERTEXES]);
4959         Mod_Q1BSP_LoadEdges(&lumpsb[Q2LUMP_EDGES]);
4960         Mod_Q1BSP_LoadSurfedges(&lumpsb[Q2LUMP_SURFEDGES]);
4961         Mod_Q2BSP_LoadLighting(&lumpsb[Q2LUMP_LIGHTING]);
4962         Mod_Q1BSP_LoadPlanes(&lumpsb[Q2LUMP_PLANES]);
4963         Mod_Q2BSP_LoadTexinfo(&lumpsb[Q2LUMP_TEXINFO]);
4964         Mod_Q2BSP_LoadBrushSides(&lumpsb[Q2LUMP_BRUSHSIDES]);
4965         Mod_Q2BSP_LoadBrushes(&lumpsb[Q2LUMP_BRUSHES]);
4966         Mod_Q1BSP_LoadFaces(&lumpsb[Q2LUMP_FACES]);
4967         Mod_Q1BSP_LoadLeaffaces(&lumpsb[Q2LUMP_LEAFFACES]);
4968         Mod_Q2BSP_LoadLeafBrushes(&lumpsb[Q2LUMP_LEAFBRUSHES]);
4969         Mod_Q2BSP_LoadVisibility(&lumpsb[Q2LUMP_VISIBILITY]);
4970         Mod_Q2BSP_LoadPOP(&lumpsb[Q2LUMP_POP]);
4971         Mod_Q2BSP_LoadAreas(&lumpsb[Q2LUMP_AREAS]);
4972         Mod_Q2BSP_LoadAreaPortals(&lumpsb[Q2LUMP_AREAPORTALS]);
4973         Mod_Q2BSP_LoadLeafs(&lumpsb[Q2LUMP_LEAFS]);
4974         Mod_Q2BSP_LoadNodes(&lumpsb[Q2LUMP_NODES]);
4975         Mod_Q2BSP_LoadSubmodels(&lumpsb[Q2LUMP_MODELS]);
4976
4977         for (i = 0; i < Q2HEADER_LUMPS; i++)
4978                 if (lumpsb[i].readcount != lumpsb[i].cursize)
4979                         Host_Error("Lump %i incorrectly loaded (readcount %i, size %i)\n", i, lumpsb[i].readcount, lumpsb[i].cursize);
4980
4981         // we don't actually set MATERIALFLAG_WATERALPHA on anything, so this
4982         // doesn't enable the cvar, just indicates that transparent water is OK
4983         loadmodel->brush.supportwateralpha = true;
4984
4985         // we don't need the compressed pvs data anymore
4986         if (mod->brushq1.data_compressedpvs)
4987                 Mem_Free(mod->brushq1.data_compressedpvs);
4988         mod->brushq1.data_compressedpvs = NULL;
4989         mod->brushq1.num_compressedpvs = 0;
4990
4991         // the MakePortals code works fine on the q2bsp data as well
4992         if (mod_bsp_portalize.integer)
4993                 Mod_BSP_MakePortals();
4994
4995         mod->numframes = 0;             // q2bsp animations are kind of special, frame is unbounded...
4996         mod->numskins = 1;
4997
4998         if (loadmodel->brush.numsubmodels)
4999                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
5000
5001         totalstylesurfaces = 0;
5002         totalstyles = 0;
5003         for (i = 0;i < mod->brush.numsubmodels;i++)
5004         {
5005                 memset(stylecounts, 0, sizeof(stylecounts));
5006                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
5007                 {
5008                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
5009                         for (j = 0;j < MAXLIGHTMAPS;j++)
5010                                 stylecounts[surface->lightmapinfo->styles[j]]++;
5011                 }
5012                 for (k = 0;k < 255;k++)
5013                 {
5014                         totalstyles++;
5015                         if (stylecounts[k])
5016                                 totalstylesurfaces += stylecounts[k];
5017                 }
5018         }
5019         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
5020         // set up the world model, then on each submodel copy from the world model
5021         // and set up the submodel with the respective model info.
5022         mod = loadmodel;
5023         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5024         {
5025                 mnode_t *rootnode = NULL;
5026                 int firstbrush = loadmodel->brush.num_brushes, lastbrush = 0;
5027                 if (i > 0)
5028                 {
5029                         char name[10];
5030                         // duplicate the basic information
5031                         dpsnprintf(name, sizeof(name), "*%i", i);
5032                         mod = Mod_FindName(name, loadmodel->name);
5033                         // copy the base model to this one
5034                         *mod = *loadmodel;
5035                         // rename the clone back to its proper name
5036                         strlcpy(mod->name, name, sizeof(mod->name));
5037                         mod->brush.parentmodel = loadmodel;
5038                         // textures and memory belong to the main model
5039                         mod->texturepool = NULL;
5040                         mod->mempool = NULL;
5041                         mod->brush.GetPVS = NULL;
5042                         mod->brush.FatPVS = NULL;
5043                         mod->brush.BoxTouchingPVS = NULL;
5044                         mod->brush.BoxTouchingLeafPVS = NULL;
5045                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5046                         mod->brush.FindBoxClusters = NULL;
5047                         mod->brush.LightPoint = NULL;
5048                         mod->brush.AmbientSoundLevelsForPoint = NULL;
5049                 }
5050                 mod->brush.submodel = i;
5051                 if (loadmodel->brush.submodels)
5052                         loadmodel->brush.submodels[i] = mod;
5053
5054                 bm = &mod->brushq1.submodels[i];
5055
5056                 // we store the headnode (there's only one in Q2BSP) as if it were the first hull
5057                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
5058
5059                 mod->firstmodelsurface = bm->firstface;
5060                 mod->nummodelsurfaces = bm->numfaces;
5061
5062                 // set node/leaf parents for this submodel
5063                 // note: if the root of this submodel is a leaf (headnode[0] < 0) then there is nothing to do...
5064                 // (this happens in base3.bsp)
5065                 if (bm->headnode[0] >= 0)
5066                         rootnode = mod->brush.data_nodes + bm->headnode[0];
5067                 else
5068                         rootnode = (mnode_t*)(mod->brush.data_leafs + -1 - bm->headnode[0]);
5069                 Mod_BSP_LoadNodes_RecursiveSetParent(rootnode, NULL);
5070
5071                 // make the model surface list (used by shadowing/lighting)
5072                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
5073                 Mod_Q2BSP_FindSubmodelBrushRange_r(mod, rootnode, &firstbrush, &lastbrush);
5074                 if (firstbrush <= lastbrush)
5075                 {
5076                         mod->firstmodelbrush = firstbrush;
5077                         mod->nummodelbrushes = lastbrush + 1 - firstbrush;
5078                 }
5079                 else
5080                 {
5081                         mod->firstmodelbrush = 0;
5082                         mod->nummodelbrushes = 0;
5083                 }
5084                 Mod_MakeSortedSurfaces(mod);
5085
5086                 VectorCopy(bm->mins, mod->normalmins);
5087                 VectorCopy(bm->maxs, mod->normalmaxs);
5088                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5089                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5090                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
5091                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5092                 modelradius = modelyawradius + modelradius * modelradius;
5093                 modelyawradius = sqrt(modelyawradius);
5094                 modelradius = sqrt(modelradius);
5095                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
5096                 mod->yawmins[2] = mod->normalmins[2];
5097                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
5098                 mod->yawmaxs[2] = mod->normalmaxs[2];
5099                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5100                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
5101                 mod->radius = modelradius;
5102                 mod->radius2 = modelradius * modelradius;
5103
5104                 // this gets altered below if sky or water is used
5105                 mod->DrawSky = NULL;
5106                 mod->DrawAddWaterPlanes = NULL;
5107
5108                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
5109                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
5110                 if (mod->nummodelsurfaces)
5111                 {
5112                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
5113                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
5114                                         break;
5115                         if (j < mod->nummodelsurfaces)
5116                                 mod->DrawSky = R_Mod_DrawSky;
5117
5118                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
5119                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
5120                                         break;
5121                         if (j < mod->nummodelsurfaces)
5122                                 mod->DrawAddWaterPlanes = R_Mod_DrawAddWaterPlanes;
5123
5124                         // build lightstyle update chains
5125                         // (used to rapidly mark lightmapupdateflags on many surfaces
5126                         // when d_lightstylevalue changes)
5127                         memset(stylecounts, 0, sizeof(stylecounts));
5128                         for (k = 0;k < mod->nummodelsurfaces;k++)
5129                         {
5130                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
5131                                 for (j = 0;j < MAXLIGHTMAPS;j++)
5132                                         stylecounts[surface->lightmapinfo->styles[j]]++;
5133                         }
5134                         mod->brushq1.num_lightstyles = 0;
5135                         for (k = 0;k < 255;k++)
5136                         {
5137                                 if (stylecounts[k])
5138                                 {
5139                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
5140                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
5141                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
5142                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
5143                                         remapstyles[k] = mod->brushq1.num_lightstyles;
5144                                         mod->brushq1.num_lightstyles++;
5145                                 }
5146                         }
5147                         for (k = 0;k < mod->nummodelsurfaces;k++)
5148                         {
5149                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
5150                                 for (j = 0;j < MAXLIGHTMAPS;j++)
5151                                 {
5152                                         if (surface->lightmapinfo->styles[j] != 255)
5153                                         {
5154                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
5155                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
5156                                         }
5157                                 }
5158                         }
5159                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
5160                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
5161                 }
5162                 else
5163                 {
5164                         Con_Printf(CON_WARN "warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
5165                 }
5166                 //mod->brushq1.num_visleafs = bm->visleafs;
5167
5168                 // build a Bounding Interval Hierarchy for culling triangles in light rendering
5169                 Mod_MakeCollisionBIH(mod, false, &mod->collision_bih);
5170
5171                 // build a Bounding Interval Hierarchy for culling brushes in collision detection
5172                 Mod_MakeCollisionBIH(mod, true, &mod->render_bih);
5173
5174                 // generate VBOs and other shared data before cloning submodels
5175                 if (i == 0)
5176                         Mod_BuildVBOs();
5177         }
5178         mod = loadmodel;
5179
5180         Con_DPrintf("Stats for q2bsp model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
5181 }
5182
5183 static int Mod_Q3BSP_SuperContentsFromNativeContents(int nativecontents);
5184 static int Mod_Q3BSP_NativeContentsFromSuperContents(int supercontents);
5185
5186 static void Mod_Q3BSP_LoadEntities(lump_t *l)
5187 {
5188         const char *data;
5189         char key[128], value[MAX_INPUTLINE];
5190         float v[3];
5191         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
5192         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
5193         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
5194         if (!l->filelen)
5195                 return;
5196         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
5197         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
5198         loadmodel->brush.entities[l->filelen] = 0;
5199         data = loadmodel->brush.entities;
5200         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
5201         // VorteX: q3map2 FS-R generates tangentspace deluxemaps for q3bsp and sets 'deluxeMaps' key
5202         loadmodel->brushq3.deluxemapping = false;
5203         if (data && COM_ParseToken_Simple(&data, false, false, true) && com_token[0] == '{')
5204         {
5205                 while (1)
5206                 {
5207                         if (!COM_ParseToken_Simple(&data, false, false, true))
5208                                 break; // error
5209                         if (com_token[0] == '}')
5210                                 break; // end of worldspawn
5211                         if (com_token[0] == '_')
5212                                 strlcpy(key, com_token + 1, sizeof(key));
5213                         else
5214                                 strlcpy(key, com_token, sizeof(key));
5215                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
5216                                 key[strlen(key)-1] = 0;
5217                         if (!COM_ParseToken_Simple(&data, false, false, true))
5218                                 break; // error
5219                         strlcpy(value, com_token, sizeof(value));
5220                         if (!strcasecmp("gridsize", key)) // this one is case insensitive to 100% match q3map2
5221                         {
5222 #if _MSC_VER >= 1400
5223 #define sscanf sscanf_s
5224 #endif
5225 #if 0
5226                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
5227                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
5228 #else
5229                                 VectorSet(v, 64, 64, 128);
5230                                 if(sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) != 3)
5231                                         Con_Printf("Mod_Q3BSP_LoadEntities: funny gridsize \"%s\" in %s, interpreting as \"%f %f %f\" to match q3map2's parsing\n", value, loadmodel->name, v[0], v[1], v[2]);
5232                                 if (v[0] != 0 && v[1] != 0 && v[2] != 0)
5233                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
5234 #endif
5235                         }
5236                         else if (!strcmp("deluxeMaps", key))
5237                         {
5238                                 if (!strcmp(com_token, "1"))
5239                                 {
5240                                         loadmodel->brushq3.deluxemapping = true;
5241                                         loadmodel->brushq3.deluxemapping_modelspace = true;
5242                                 }
5243                                 else if (!strcmp(com_token, "2"))
5244                                 {
5245                                         loadmodel->brushq3.deluxemapping = true;
5246                                         loadmodel->brushq3.deluxemapping_modelspace = false;
5247                                 }
5248                         }
5249                 }
5250         }
5251 }
5252
5253 static void Mod_Q3BSP_LoadTextures(lump_t *l)
5254 {
5255         q3dtexture_t *in;
5256         texture_t *out;
5257         int i, count;
5258
5259         in = (q3dtexture_t *)(mod_base + l->fileofs);
5260         if (l->filelen % sizeof(*in))
5261                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
5262         count = l->filelen / sizeof(*in);
5263         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5264
5265         loadmodel->data_textures = out;
5266         loadmodel->num_textures = count;
5267         loadmodel->num_texturesperskin = loadmodel->num_textures;
5268
5269         for (i = 0;i < count;i++)
5270         {
5271                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
5272                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(LittleLong(in[i].contents));
5273                 Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, out + i, in[i].name, true, true, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
5274                 // restore the surfaceflags and supercontents
5275                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
5276                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(LittleLong(in[i].contents));
5277         }
5278 }
5279
5280 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
5281 {
5282         q3dplane_t *in;
5283         mplane_t *out;
5284         int i, count;
5285
5286         in = (q3dplane_t *)(mod_base + l->fileofs);
5287         if (l->filelen % sizeof(*in))
5288                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
5289         count = l->filelen / sizeof(*in);
5290         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5291
5292         loadmodel->brush.data_planes = out;
5293         loadmodel->brush.num_planes = count;
5294
5295         for (i = 0;i < count;i++, in++, out++)
5296         {
5297                 out->normal[0] = LittleFloat(in->normal[0]);
5298                 out->normal[1] = LittleFloat(in->normal[1]);
5299                 out->normal[2] = LittleFloat(in->normal[2]);
5300                 out->dist = LittleFloat(in->dist);
5301                 PlaneClassify(out);
5302         }
5303 }
5304
5305 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
5306 {
5307         q3dbrushside_t *in;
5308         q3mbrushside_t *out;
5309         int i, n, count;
5310
5311         in = (q3dbrushside_t *)(mod_base + l->fileofs);
5312         if (l->filelen % sizeof(*in))
5313                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
5314         count = l->filelen / sizeof(*in);
5315         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5316
5317         loadmodel->brush.data_brushsides = out;
5318         loadmodel->brush.num_brushsides = count;
5319
5320         for (i = 0;i < count;i++, in++, out++)
5321         {
5322                 n = LittleLong(in->planeindex);
5323                 if (n < 0 || n >= loadmodel->brush.num_planes)
5324                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5325                 out->plane = loadmodel->brush.data_planes + n;
5326                 n = LittleLong(in->textureindex);
5327                 if (n < 0 || n >= loadmodel->num_textures)
5328                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
5329                 out->texture = loadmodel->data_textures + n;
5330         }
5331 }
5332
5333 static void Mod_Q3BSP_LoadBrushSides_IG(lump_t *l)
5334 {
5335         q3dbrushside_ig_t *in;
5336         q3mbrushside_t *out;
5337         int i, n, count;
5338
5339         in = (q3dbrushside_ig_t *)(mod_base + l->fileofs);
5340         if (l->filelen % sizeof(*in))
5341                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
5342         count = l->filelen / sizeof(*in);
5343         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5344
5345         loadmodel->brush.data_brushsides = out;
5346         loadmodel->brush.num_brushsides = count;
5347
5348         for (i = 0;i < count;i++, in++, out++)
5349         {
5350                 n = LittleLong(in->planeindex);
5351                 if (n < 0 || n >= loadmodel->brush.num_planes)
5352                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5353                 out->plane = loadmodel->brush.data_planes + n;
5354                 n = LittleLong(in->textureindex);
5355                 if (n < 0 || n >= loadmodel->num_textures)
5356                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
5357                 out->texture = loadmodel->data_textures + n;
5358         }
5359 }
5360
5361 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
5362 {
5363         q3dbrush_t *in;
5364         q3mbrush_t *out;
5365         int i, j, n, c, count, maxplanes, q3surfaceflags;
5366         colplanef_t *planes;
5367
5368         in = (q3dbrush_t *)(mod_base + l->fileofs);
5369         if (l->filelen % sizeof(*in))
5370                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
5371         count = l->filelen / sizeof(*in);
5372         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5373
5374         loadmodel->brush.data_brushes = out;
5375         loadmodel->brush.num_brushes = count;
5376
5377         maxplanes = 0;
5378         planes = NULL;
5379
5380         for (i = 0;i < count;i++, in++, out++)
5381         {
5382                 n = LittleLong(in->firstbrushside);
5383                 c = LittleLong(in->numbrushsides);
5384                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
5385                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
5386                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
5387                 out->numbrushsides = c;
5388                 n = LittleLong(in->textureindex);
5389                 if (n < 0 || n >= loadmodel->num_textures)
5390                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
5391                 out->texture = loadmodel->data_textures + n;
5392
5393                 // make a list of mplane_t structs to construct a colbrush from
5394                 if (maxplanes < out->numbrushsides)
5395                 {
5396                         maxplanes = out->numbrushsides;
5397                         if (planes)
5398                                 Mem_Free(planes);
5399                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
5400                 }
5401                 q3surfaceflags = 0;
5402                 for (j = 0;j < out->numbrushsides;j++)
5403                 {
5404                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
5405                         planes[j].dist = out->firstbrushside[j].plane->dist;
5406                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
5407                         planes[j].texture = out->firstbrushside[j].texture;
5408                         q3surfaceflags |= planes[j].q3surfaceflags;
5409                 }
5410                 // make the colbrush from the planes
5411                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
5412
5413                 // this whole loop can take a while (e.g. on redstarrepublic4)
5414                 CL_KeepaliveMessage(false);
5415         }
5416         if (planes)
5417                 Mem_Free(planes);
5418 }
5419
5420 static void Mod_Q3BSP_LoadEffects(lump_t *l)
5421 {
5422         q3deffect_t *in;
5423         q3deffect_t *out;
5424         int i, n, count;
5425
5426         in = (q3deffect_t *)(mod_base + l->fileofs);
5427         if (l->filelen % sizeof(*in))
5428                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
5429         count = l->filelen / sizeof(*in);
5430         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5431
5432         loadmodel->brushq3.data_effects = out;
5433         loadmodel->brushq3.num_effects = count;
5434
5435         for (i = 0;i < count;i++, in++, out++)
5436         {
5437                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
5438                 n = LittleLong(in->brushindex);
5439                 if (n >= loadmodel->brush.num_brushes)
5440                 {
5441                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
5442                         n = -1;
5443                 }
5444                 out->brushindex = n;
5445                 out->unknown = LittleLong(in->unknown);
5446         }
5447 }
5448
5449 static void Mod_Q3BSP_LoadVertices(lump_t *l)
5450 {
5451         q3dvertex_t *in;
5452         int i, count;
5453
5454         in = (q3dvertex_t *)(mod_base + l->fileofs);
5455         if (l->filelen % sizeof(*in))
5456                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
5457         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
5458         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
5459         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
5460         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
5461         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
5462         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
5463
5464         for (i = 0;i < count;i++, in++)
5465         {
5466                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
5467                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
5468                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
5469                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
5470                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
5471                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
5472                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
5473                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
5474                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
5475                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
5476                 // svector/tvector are calculated later in face loading
5477                 if(mod_q3bsp_sRGBlightmaps.integer)
5478                 {
5479                         // if lightmaps are sRGB, vertex colors are sRGB too, so we need to linearize them
5480                         // note: when this is in use, lightmap color 128 is no longer neutral, but "sRGB half power" is
5481                         // working like this may be odd, but matches q3map2 -gamma 2.2
5482                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5483                         {
5484                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
5485                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
5486                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
5487                                 // we fix the brightness consistently via lightmapscale
5488                         }
5489                         else
5490                         {
5491                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = Image_LinearFloatFromsRGB(in->color4ub[0]);
5492                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = Image_LinearFloatFromsRGB(in->color4ub[1]);
5493                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = Image_LinearFloatFromsRGB(in->color4ub[2]);
5494                         }
5495                 }
5496                 else
5497                 {
5498                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5499                         {
5500                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[0]);
5501                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[1]);
5502                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[2]);
5503                         }
5504                         else
5505                         {
5506                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
5507                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
5508                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
5509                         }
5510                 }
5511                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
5512                 if(in->color4ub[0] != 255 || in->color4ub[1] != 255 || in->color4ub[2] != 255)
5513                         loadmodel->lit = true;
5514         }
5515 }
5516
5517 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
5518 {
5519         int *in;
5520         int *out;
5521         int i, count;
5522
5523         in = (int *)(mod_base + l->fileofs);
5524         if (l->filelen % sizeof(int[3]))
5525                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
5526         count = l->filelen / sizeof(*in);
5527
5528         if(!loadmodel->brushq3.num_vertices)
5529         {
5530                 if (count)
5531                         Con_Printf("Mod_Q3BSP_LoadTriangles: %s has triangles but no vertexes, broken compiler, ignoring problem\n", loadmodel->name);
5532                 loadmodel->brushq3.num_triangles = 0;
5533                 return;
5534         }
5535
5536         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5537         loadmodel->brushq3.num_triangles = count / 3;
5538         loadmodel->brushq3.data_element3i = out;
5539
5540         for (i = 0;i < count;i++, in++, out++)
5541         {
5542                 *out = LittleLong(*in);
5543                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
5544                 {
5545                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
5546                         *out = 0;
5547                 }
5548         }
5549 }
5550
5551 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
5552 {
5553         q3dlightmap_t *input_pointer;
5554         int i;
5555         int j;
5556         int k;
5557         int count;
5558         int powerx;
5559         int powery;
5560         int powerxy;
5561         int powerdxy;
5562         int endlightmap;
5563         int mergegoal;
5564         int lightmapindex;
5565         int realcount;
5566         int realindex;
5567         int mergedwidth;
5568         int mergedheight;
5569         int mergedcolumns;
5570         int mergedrows;
5571         int mergedrowsxcolumns;
5572         int size;
5573         int bytesperpixel;
5574         int rgbmap[3];
5575         unsigned char *c;
5576         unsigned char *mergedpixels;
5577         unsigned char *mergeddeluxepixels;
5578         unsigned char *mergebuf;
5579         char mapname[MAX_QPATH];
5580         qboolean external;
5581         unsigned char *inpixels[10000]; // max count q3map2 can output (it uses 4 digits)
5582         char vabuf[1024];
5583
5584         // defaults for q3bsp
5585         size = 128;
5586         bytesperpixel = 3;
5587         rgbmap[0] = 2;
5588         rgbmap[1] = 1;
5589         rgbmap[2] = 0;
5590         external = false;
5591         loadmodel->brushq3.lightmapsize = 128;
5592
5593         if (cls.state == ca_dedicated)
5594                 return;
5595
5596         if(mod_q3bsp_nolightmaps.integer)
5597         {
5598                 return;
5599         }
5600         else if(l->filelen)
5601         {
5602                 // prefer internal LMs for compatibility (a BSP contains no info on whether external LMs exist)
5603                 if (developer_loading.integer)
5604                         Con_Printf("Using internal lightmaps\n");
5605                 input_pointer = (q3dlightmap_t *)(mod_base + l->fileofs);
5606                 if (l->filelen % sizeof(*input_pointer))
5607                         Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
5608                 count = l->filelen / sizeof(*input_pointer);
5609                 for(i = 0; i < count; ++i)
5610                         inpixels[i] = input_pointer[i].rgb;
5611         }
5612         else
5613         {
5614                 // no internal lightmaps
5615                 // try external lightmaps
5616                 if (developer_loading.integer)
5617                         Con_Printf("Using external lightmaps\n");
5618                 FS_StripExtension(loadmodel->name, mapname, sizeof(mapname));
5619                 inpixels[0] = loadimagepixelsbgra(va(vabuf, sizeof(vabuf), "%s/lm_%04d", mapname, 0), false, false, false, NULL);
5620                 if(!inpixels[0])
5621                         return;
5622
5623                 // using EXTERNAL lightmaps instead
5624                 if(image_width != (int) CeilPowerOf2(image_width) || image_width != image_height)
5625                 {
5626                         Mem_Free(inpixels[0]);
5627                         Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
5628                 }
5629
5630                 size = image_width;
5631                 bytesperpixel = 4;
5632                 rgbmap[0] = 0;
5633                 rgbmap[1] = 1;
5634                 rgbmap[2] = 2;
5635                 external = true;
5636
5637                 for(count = 1; ; ++count)
5638                 {
5639                         inpixels[count] = loadimagepixelsbgra(va(vabuf, sizeof(vabuf), "%s/lm_%04d", mapname, count), false, false, false, NULL);
5640                         if(!inpixels[count])
5641                                 break; // we got all of them
5642                         if(image_width != size || image_height != size)
5643                         {
5644                                 Mem_Free(inpixels[count]);
5645                                 inpixels[count] = NULL;
5646                                 Con_Printf("Mod_Q3BSP_LoadLightmaps: mismatched lightmap size in %s - external lightmap %s/lm_%04d does not match earlier ones\n", loadmodel->name, mapname, count);
5647                                 break;
5648                         }
5649                 }
5650         }
5651
5652         loadmodel->brushq3.lightmapsize = size;
5653         loadmodel->brushq3.num_originallightmaps = count;
5654
5655         // now check the surfaces to see if any of them index an odd numbered
5656         // lightmap, if so this is not a deluxemapped bsp file
5657         //
5658         // also check what lightmaps are actually used, because q3map2 sometimes
5659         // (always?) makes an unused one at the end, which
5660         // q3map2 sometimes (or always?) makes a second blank lightmap for no
5661         // reason when only one lightmap is used, which can throw off the
5662         // deluxemapping detection method, so check 2-lightmap bsp's specifically
5663         // to see if the second lightmap is blank, if so it is not deluxemapped.
5664         // VorteX: autodetect only if previous attempt to find "deluxeMaps" key
5665         // in Mod_Q3BSP_LoadEntities was failed
5666         if (!loadmodel->brushq3.deluxemapping)
5667         {
5668                 loadmodel->brushq3.deluxemapping = !(count & 1);
5669                 loadmodel->brushq3.deluxemapping_modelspace = true;
5670                 endlightmap = 0;
5671                 if (loadmodel->brushq3.deluxemapping)
5672                 {
5673                         int facecount = faceslump->filelen / sizeof(q3dface_t);
5674                         q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
5675                         for (i = 0;i < facecount;i++)
5676                         {
5677                                 j = LittleLong(faces[i].lightmapindex);
5678                                 if (j >= 0)
5679                                 {
5680                                         endlightmap = max(endlightmap, j + 1);
5681                                         if ((j & 1) || j + 1 >= count)
5682                                         {
5683                                                 loadmodel->brushq3.deluxemapping = false;
5684                                                 break;
5685                                         }
5686                                 }
5687                         }
5688                 }
5689
5690                 // q3map2 sometimes (or always?) makes a second blank lightmap for no
5691                 // reason when only one lightmap is used, which can throw off the
5692                 // deluxemapping detection method, so check 2-lightmap bsp's specifically
5693                 // to see if the second lightmap is blank, if so it is not deluxemapped.
5694                 //
5695                 // further research has shown q3map2 sometimes creates a deluxemap and two
5696                 // blank lightmaps, which must be handled properly as well
5697                 if (endlightmap == 1 && count > 1)
5698                 {
5699                         c = inpixels[1];
5700                         for (i = 0;i < size*size;i++)
5701                         {
5702                                 if (c[bytesperpixel*i + rgbmap[0]])
5703                                         break;
5704                                 if (c[bytesperpixel*i + rgbmap[1]])
5705                                         break;
5706                                 if (c[bytesperpixel*i + rgbmap[2]])
5707                                         break;
5708                         }
5709                         if (i == size*size)
5710                         {
5711                                 // all pixels in the unused lightmap were black...
5712                                 loadmodel->brushq3.deluxemapping = false;
5713                         }
5714                 }
5715         }
5716
5717         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
5718
5719         // figure out what the most reasonable merge power is within limits
5720
5721         // find the appropriate NxN dimensions to merge to, to avoid wasted space
5722         realcount = count >> (int)loadmodel->brushq3.deluxemapping;
5723
5724         // figure out how big the merged texture has to be
5725         mergegoal = 128<<bound(0, mod_q3bsp_lightmapmergepower.integer, 6);
5726         mergegoal = bound(size, mergegoal, (int)vid.maxtexturesize_2d);
5727         while (mergegoal > size && mergegoal * mergegoal / 4 >= size * size * realcount)
5728                 mergegoal /= 2;
5729         mergedwidth = mergegoal;
5730         mergedheight = mergegoal;
5731         // choose non-square size (2x1 aspect) if only half the space is used;
5732         // this really only happens when the entire set fits in one texture, if
5733         // there are multiple textures, we don't worry about shrinking the last
5734         // one to fit, because the driver prefers the same texture size on
5735         // consecutive draw calls...
5736         if (mergedwidth * mergedheight / 2 >= size*size*realcount)
5737                 mergedheight /= 2;
5738
5739         loadmodel->brushq3.num_lightmapmergedwidthpower = 0;
5740         loadmodel->brushq3.num_lightmapmergedheightpower = 0;
5741         while (mergedwidth > size<<loadmodel->brushq3.num_lightmapmergedwidthpower)
5742                 loadmodel->brushq3.num_lightmapmergedwidthpower++;
5743         while (mergedheight > size<<loadmodel->brushq3.num_lightmapmergedheightpower)
5744                 loadmodel->brushq3.num_lightmapmergedheightpower++;
5745         loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower = loadmodel->brushq3.num_lightmapmergedwidthpower + loadmodel->brushq3.num_lightmapmergedheightpower + (loadmodel->brushq3.deluxemapping ? 1 : 0);
5746
5747         powerx = loadmodel->brushq3.num_lightmapmergedwidthpower;
5748         powery = loadmodel->brushq3.num_lightmapmergedheightpower;
5749         powerxy = powerx+powery;
5750         powerdxy = loadmodel->brushq3.deluxemapping + powerxy;
5751
5752         mergedcolumns = 1 << powerx;
5753         mergedrows = 1 << powery;
5754         mergedrowsxcolumns = 1 << powerxy;
5755
5756         loadmodel->brushq3.num_mergedlightmaps = (realcount + (1 << powerxy) - 1) >> powerxy;
5757         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
5758         if (loadmodel->brushq3.deluxemapping)
5759                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
5760
5761         mergedpixels = (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4);
5762         mergeddeluxepixels = loadmodel->brushq3.deluxemapping ? (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4) : NULL;
5763         for (i = 0;i < count;i++)
5764         {
5765                 // figure out which merged lightmap texture this fits into
5766                 realindex = i >> (int)loadmodel->brushq3.deluxemapping;
5767                 lightmapindex = i >> powerdxy;
5768
5769                 // choose the destination address
5770                 mergebuf = (loadmodel->brushq3.deluxemapping && (i & 1)) ? mergeddeluxepixels : mergedpixels;
5771                 mergebuf += 4 * (realindex & (mergedcolumns-1))*size + 4 * ((realindex >> powerx) & (mergedrows-1))*mergedwidth*size;
5772                 if ((i & 1) == 0 || !loadmodel->brushq3.deluxemapping)
5773                         Con_DPrintf("copying original lightmap %i (%ix%i) to %i (at %i,%i)\n", i, size, size, lightmapindex, (realindex & (mergedcolumns-1))*size, ((realindex >> powerx) & (mergedrows-1))*size);
5774
5775                 // convert pixels from RGB or BGRA while copying them into the destination rectangle
5776                 for (j = 0;j < size;j++)
5777                 for (k = 0;k < size;k++)
5778                 {
5779                         mergebuf[(j*mergedwidth+k)*4+0] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[0]];
5780                         mergebuf[(j*mergedwidth+k)*4+1] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[1]];
5781                         mergebuf[(j*mergedwidth+k)*4+2] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[2]];
5782                         mergebuf[(j*mergedwidth+k)*4+3] = 255;
5783                 }
5784
5785                 // upload texture if this was the last tile being written to the texture
5786                 if (((realindex + 1) & (mergedrowsxcolumns - 1)) == 0 || (realindex + 1) == realcount)
5787                 {
5788                         if (loadmodel->brushq3.deluxemapping && (i & 1))
5789                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va(vabuf, sizeof(vabuf), "deluxemap%04i", lightmapindex), mergedwidth, mergedheight, mergeddeluxepixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5790                         else
5791                         {
5792                                 if(mod_q3bsp_sRGBlightmaps.integer)
5793                                 {
5794                                         textype_t t;
5795                                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5796                                         {
5797                                                 t = TEXTYPE_BGRA; // in stupid fallback mode, we upload lightmaps in sRGB form and just fix their brightness
5798                                                 // we fix the brightness consistently via lightmapscale
5799                                         }
5800                                         else
5801                                                 t = TEXTYPE_SRGB_BGRA; // normally, we upload lightmaps in sRGB form (possibly downconverted to linear)
5802                                         loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va(vabuf, sizeof(vabuf), "lightmap%04i", lightmapindex), mergedwidth, mergedheight, mergedpixels, t, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5803                                 }
5804                                 else
5805                                 {
5806                                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5807                                                 Image_MakesRGBColorsFromLinear_Lightmap(mergedpixels, mergedpixels, mergedwidth * mergedheight);
5808                                         loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va(vabuf, sizeof(vabuf), "lightmap%04i", lightmapindex), mergedwidth, mergedheight, mergedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5809                                 }
5810                         }
5811                 }
5812         }
5813
5814         if (mergeddeluxepixels)
5815                 Mem_Free(mergeddeluxepixels);
5816         Mem_Free(mergedpixels);
5817         if(external)
5818         {
5819                 for(i = 0; i < count; ++i)
5820                         Mem_Free(inpixels[i]);
5821         }
5822 }
5823
5824 typedef struct patchtess_s
5825 {
5826         patchinfo_t info;
5827
5828         // Auxiliary data used only by patch loading code in Mod_Q3BSP_LoadFaces
5829         int surface_id;
5830         float lodgroup[6];
5831         float *originalvertex3f;
5832 } patchtess_t;
5833
5834 #define PATCHTESS_SAME_LODGROUP(a,b) \
5835         ( \
5836                 (a).lodgroup[0] == (b).lodgroup[0] && \
5837                 (a).lodgroup[1] == (b).lodgroup[1] && \
5838                 (a).lodgroup[2] == (b).lodgroup[2] && \
5839                 (a).lodgroup[3] == (b).lodgroup[3] && \
5840                 (a).lodgroup[4] == (b).lodgroup[4] && \
5841                 (a).lodgroup[5] == (b).lodgroup[5] \
5842         )
5843
5844 static void Mod_Q3BSP_LoadFaces(lump_t *l)
5845 {
5846         q3dface_t *in, *oldin;
5847         msurface_t *out, *oldout;
5848         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, collisionvertices, collisiontriangles, numvertices, numtriangles, cxtess, cytess;
5849         float lightmaptcbase[2], lightmaptcscale[2];
5850         //int *originalelement3i;
5851         float *originalvertex3f;
5852         //float *originalsvector3f;
5853         //float *originaltvector3f;
5854         float *originalnormal3f;
5855         float *originalcolor4f;
5856         float *originaltexcoordtexture2f;
5857         float *originaltexcoordlightmap2f;
5858         float *surfacecollisionvertex3f;
5859         int *surfacecollisionelement3i;
5860         float *v;
5861         patchtess_t *patchtess = NULL;
5862         int patchtesscount = 0;
5863         qboolean again;
5864
5865         in = (q3dface_t *)(mod_base + l->fileofs);
5866         if (l->filelen % sizeof(*in))
5867                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
5868         count = l->filelen / sizeof(*in);
5869         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5870
5871         loadmodel->data_surfaces = out;
5872         loadmodel->num_surfaces = count;
5873
5874         if(count > 0)
5875                 patchtess = (patchtess_t*) Mem_Alloc(tempmempool, count * sizeof(*patchtess));
5876
5877         i = 0;
5878         oldi = i;
5879         oldin = in;
5880         oldout = out;
5881         meshvertices = 0;
5882         meshtriangles = 0;
5883         for (;i < count;i++, in++, out++)
5884         {
5885                 // check face type first
5886                 type = LittleLong(in->type);
5887                 if (type != Q3FACETYPE_FLAT
5888                  && type != Q3FACETYPE_PATCH
5889                  && type != Q3FACETYPE_MESH
5890                  && type != Q3FACETYPE_FLARE)
5891                 {
5892                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
5893                         continue;
5894                 }
5895
5896                 n = LittleLong(in->textureindex);
5897                 if (n < 0 || n >= loadmodel->num_textures)
5898                 {
5899                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
5900                         continue;
5901                 }
5902                 out->texture = loadmodel->data_textures + n;
5903                 n = LittleLong(in->effectindex);
5904                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
5905                 {
5906                         if (developer_extra.integer)
5907                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
5908                         n = -1;
5909                 }
5910                 if (n == -1)
5911                         out->effect = NULL;
5912                 else
5913                         out->effect = loadmodel->brushq3.data_effects + n;
5914
5915                 if (cls.state != ca_dedicated)
5916                 {
5917                         out->lightmaptexture = NULL;
5918                         out->deluxemaptexture = r_texture_blanknormalmap;
5919                         n = LittleLong(in->lightmapindex);
5920                         if (n < 0)
5921                                 n = -1;
5922                         else if (n >= loadmodel->brushq3.num_originallightmaps)
5923                         {
5924                                 if(loadmodel->brushq3.num_originallightmaps != 0)
5925                                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
5926                                 n = -1;
5927                         }
5928                         else
5929                         {
5930                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower];
5931                                 if (loadmodel->brushq3.deluxemapping)
5932                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower];
5933                                 loadmodel->lit = true;
5934                         }
5935                 }
5936
5937                 firstvertex = LittleLong(in->firstvertex);
5938                 numvertices = LittleLong(in->numvertices);
5939                 firstelement = LittleLong(in->firstelement);
5940                 numtriangles = LittleLong(in->numelements) / 3;
5941                 if (numtriangles * 3 != LittleLong(in->numelements))
5942                 {
5943                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
5944                         continue;
5945                 }
5946                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
5947                 {
5948                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
5949                         continue;
5950                 }
5951                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5952                 {
5953                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
5954                         continue;
5955                 }
5956                 switch(type)
5957                 {
5958                 case Q3FACETYPE_FLAT:
5959                 case Q3FACETYPE_MESH:
5960                         // no processing necessary
5961                         break;
5962                 case Q3FACETYPE_PATCH:
5963                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5964                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5965                         if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
5966                         {
5967                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5968                                 continue;
5969                         }
5970                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5971
5972                         // convert patch to Q3FACETYPE_MESH
5973                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5974                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5975                         // bound to user settings
5976                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5977                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5978                         // bound to sanity settings
5979                         xtess = bound(0, xtess, 1024);
5980                         ytess = bound(0, ytess, 1024);
5981
5982                         // lower quality collision patches! Same procedure as before, but different cvars
5983                         // convert patch to Q3FACETYPE_MESH
5984                         cxtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5985                         cytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5986                         // bound to user settings
5987                         cxtess = bound(r_subdivisions_collision_mintess.integer, cxtess, r_subdivisions_collision_maxtess.integer);
5988                         cytess = bound(r_subdivisions_collision_mintess.integer, cytess, r_subdivisions_collision_maxtess.integer);
5989                         // bound to sanity settings
5990                         cxtess = bound(0, cxtess, 1024);
5991                         cytess = bound(0, cytess, 1024);
5992
5993                         // store it for the LOD grouping step
5994                         patchtess[patchtesscount].info.xsize = patchsize[0];
5995                         patchtess[patchtesscount].info.ysize = patchsize[1];
5996                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].xtess = xtess;
5997                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].ytess = ytess;
5998                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].xtess = cxtess;
5999                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].ytess = cytess;
6000
6001                         patchtess[patchtesscount].surface_id = i;
6002                         patchtess[patchtesscount].lodgroup[0] = LittleFloat(in->specific.patch.mins[0]);
6003                         patchtess[patchtesscount].lodgroup[1] = LittleFloat(in->specific.patch.mins[1]);
6004                         patchtess[patchtesscount].lodgroup[2] = LittleFloat(in->specific.patch.mins[2]);
6005                         patchtess[patchtesscount].lodgroup[3] = LittleFloat(in->specific.patch.maxs[0]);
6006                         patchtess[patchtesscount].lodgroup[4] = LittleFloat(in->specific.patch.maxs[1]);
6007                         patchtess[patchtesscount].lodgroup[5] = LittleFloat(in->specific.patch.maxs[2]);
6008                         patchtess[patchtesscount].originalvertex3f = originalvertex3f;
6009                         ++patchtesscount;
6010                         break;
6011                 case Q3FACETYPE_FLARE:
6012                         if (developer_extra.integer)
6013                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
6014                         // don't render it
6015                         continue;
6016                 }
6017                 out->num_vertices = numvertices;
6018                 out->num_triangles = numtriangles;
6019                 meshvertices += out->num_vertices;
6020                 meshtriangles += out->num_triangles;
6021         }
6022
6023         // Fix patches tesselations so that they make no seams
6024         do
6025         {
6026                 again = false;
6027                 for(i = 0; i < patchtesscount; ++i)
6028                 {
6029                         for(j = i+1; j < patchtesscount; ++j)
6030                         {
6031                                 if (!PATCHTESS_SAME_LODGROUP(patchtess[i], patchtess[j]))
6032                                         continue;
6033
6034                                 if (Q3PatchAdjustTesselation(3, &patchtess[i].info, patchtess[i].originalvertex3f, &patchtess[j].info, patchtess[j].originalvertex3f) )
6035                                         again = true;
6036                         }
6037                 }
6038         }
6039         while (again);
6040
6041         // Calculate resulting number of triangles
6042         collisionvertices = 0;
6043         collisiontriangles = 0;
6044         for(i = 0; i < patchtesscount; ++i)
6045         {
6046                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_VISUAL].xtess);
6047                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_VISUAL].ytess);
6048                 numvertices = finalwidth * finalheight;
6049                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
6050
6051                 oldout[patchtess[i].surface_id].num_vertices = numvertices;
6052                 oldout[patchtess[i].surface_id].num_triangles = numtriangles;
6053                 meshvertices += oldout[patchtess[i].surface_id].num_vertices;
6054                 meshtriangles += oldout[patchtess[i].surface_id].num_triangles;
6055
6056                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_COLLISION].xtess);
6057                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_COLLISION].ytess);
6058                 numvertices = finalwidth * finalheight;
6059                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
6060
6061                 oldout[patchtess[i].surface_id].num_collisionvertices = numvertices;
6062                 oldout[patchtess[i].surface_id].num_collisiontriangles = numtriangles;
6063                 collisionvertices += oldout[patchtess[i].surface_id].num_collisionvertices;
6064                 collisiontriangles += oldout[patchtess[i].surface_id].num_collisiontriangles;
6065         }
6066
6067         i = oldi;
6068         in = oldin;
6069         out = oldout;
6070         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true);
6071         if (collisiontriangles)
6072         {
6073                 loadmodel->brush.data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, collisionvertices * sizeof(float[3]));
6074                 loadmodel->brush.data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, collisiontriangles * sizeof(int[3]));
6075         }
6076         meshvertices = 0;
6077         meshtriangles = 0;
6078         collisionvertices = 0;
6079         collisiontriangles = 0;
6080         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
6081         {
6082                 if (out->num_vertices < 3 || out->num_triangles < 1)
6083                         continue;
6084
6085                 type = LittleLong(in->type);
6086                 firstvertex = LittleLong(in->firstvertex);
6087                 firstelement = LittleLong(in->firstelement);
6088                 out->num_firstvertex = meshvertices;
6089                 out->num_firsttriangle = meshtriangles;
6090                 out->num_firstcollisiontriangle = collisiontriangles;
6091                 switch(type)
6092                 {
6093                 case Q3FACETYPE_FLAT:
6094                 case Q3FACETYPE_MESH:
6095                         // no processing necessary, except for lightmap merging
6096                         for (j = 0;j < out->num_vertices;j++)
6097                         {
6098                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
6099                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
6100                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
6101                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
6102                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
6103                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
6104                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
6105                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
6106                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
6107                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
6108                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
6109                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
6110                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
6111                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
6112                         }
6113                         for (j = 0;j < out->num_triangles*3;j++)
6114                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
6115                         break;
6116                 case Q3FACETYPE_PATCH:
6117                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
6118                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
6119                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
6120                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
6121                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
6122                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
6123                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
6124
6125                         xtess = ytess = cxtess = cytess = -1;
6126                         for(j = 0; j < patchtesscount; ++j)
6127                                 if(patchtess[j].surface_id == i)
6128                                 {
6129                                         xtess = patchtess[j].info.lods[PATCH_LOD_VISUAL].xtess;
6130                                         ytess = patchtess[j].info.lods[PATCH_LOD_VISUAL].ytess;
6131                                         cxtess = patchtess[j].info.lods[PATCH_LOD_COLLISION].xtess;
6132                                         cytess = patchtess[j].info.lods[PATCH_LOD_COLLISION].ytess;
6133                                         break;
6134                                 }
6135                         if(xtess == -1)
6136                         {
6137                                 Con_Printf(CON_ERROR "ERROR: patch %d isn't preprocessed?!?\n", i);
6138                                 xtess = ytess = cxtess = cytess = 0;
6139                         }
6140
6141                         finalwidth = Q3PatchDimForTess(patchsize[0],xtess); //((patchsize[0] - 1) * xtess) + 1;
6142                         finalheight = Q3PatchDimForTess(patchsize[1],ytess); //((patchsize[1] - 1) * ytess) + 1;
6143                         finalvertices = finalwidth * finalheight;
6144                         oldnumtriangles = finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
6145                         type = Q3FACETYPE_MESH;
6146                         // generate geometry
6147                         // (note: normals are skipped because they get recalculated)
6148                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
6149                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
6150                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
6151                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
6152                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
6153                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
6154
6155                         out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), loadmodel->surfmesh.data_vertex3f);
6156
6157                         if (developer_extra.integer)
6158                         {
6159                                 if (out->num_triangles < finaltriangles)
6160                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
6161                                 else
6162                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
6163                         }
6164                         // q3map does not put in collision brushes for curves... ugh
6165                         // build the lower quality collision geometry
6166                         finalwidth = Q3PatchDimForTess(patchsize[0],cxtess); //((patchsize[0] - 1) * cxtess) + 1;
6167                         finalheight = Q3PatchDimForTess(patchsize[1],cytess); //((patchsize[1] - 1) * cytess) + 1;
6168                         finalvertices = finalwidth * finalheight;
6169                         oldnumtriangles2 = finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
6170
6171                         // store collision geometry for BIH collision tree
6172                         out->num_collisionvertices = finalvertices;
6173                         out->num_collisiontriangles = finaltriangles;
6174                         surfacecollisionvertex3f = loadmodel->brush.data_collisionvertex3f + collisionvertices * 3;
6175                         surfacecollisionelement3i = loadmodel->brush.data_collisionelement3i + collisiontriangles * 3;
6176                         Q3PatchTesselateFloat(3, sizeof(float[3]), surfacecollisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
6177                         Q3PatchTriangleElements(surfacecollisionelement3i, finalwidth, finalheight, collisionvertices);
6178                         Mod_SnapVertices(3, finalvertices, surfacecollisionvertex3f, 1);
6179                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(finaltriangles, surfacecollisionelement3i, surfacecollisionelement3i, loadmodel->brush.data_collisionvertex3f);
6180
6181                         if (developer_extra.integer)
6182                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
6183
6184                         collisionvertices += finalvertices;
6185                         collisiontriangles += out->num_collisiontriangles;
6186                         break;
6187                 default:
6188                         break;
6189                 }
6190                 meshvertices += out->num_vertices;
6191                 meshtriangles += out->num_triangles;
6192                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
6193                         if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
6194                                 invalidelements++;
6195                 if (invalidelements)
6196                 {
6197                         Con_Printf(CON_WARN "Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
6198                         for (j = 0;j < out->num_triangles * 3;j++)
6199                         {
6200                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
6201                                 if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
6202                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
6203                         }
6204                         Con_Print("\n");
6205                 }
6206                 // calculate a bounding box
6207                 VectorClear(out->mins);
6208                 VectorClear(out->maxs);
6209                 if (out->num_vertices)
6210                 {
6211                         if (cls.state != ca_dedicated && out->lightmaptexture)
6212                         {
6213                                 // figure out which part of the merged lightmap this fits into
6214                                 int lightmapindex = LittleLong(in->lightmapindex) >> (loadmodel->brushq3.deluxemapping ? 1 : 0);
6215                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
6216                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
6217                                 lightmapindex &= mergewidth * mergeheight - 1;
6218                                 lightmaptcscale[0] = 1.0f / mergewidth;
6219                                 lightmaptcscale[1] = 1.0f / mergeheight;
6220                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
6221                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
6222                                 // modify the lightmap texcoords to match this region of the merged lightmap
6223                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
6224                                 {
6225                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
6226                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
6227                                 }
6228                         }
6229                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
6230                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
6231                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
6232                         {
6233                                 out->mins[0] = min(out->mins[0], v[0]);
6234                                 out->maxs[0] = max(out->maxs[0], v[0]);
6235                                 out->mins[1] = min(out->mins[1], v[1]);
6236                                 out->maxs[1] = max(out->maxs[1], v[1]);
6237                                 out->mins[2] = min(out->mins[2], v[2]);
6238                                 out->maxs[2] = max(out->maxs[2], v[2]);
6239                         }
6240                         out->mins[0] -= 1.0f;
6241                         out->mins[1] -= 1.0f;
6242                         out->mins[2] -= 1.0f;
6243                         out->maxs[0] += 1.0f;
6244                         out->maxs[1] += 1.0f;
6245                         out->maxs[2] += 1.0f;
6246                 }
6247                 // set lightmap styles for consistency with q1bsp
6248                 //out->lightmapinfo->styles[0] = 0;
6249                 //out->lightmapinfo->styles[1] = 255;
6250                 //out->lightmapinfo->styles[2] = 255;
6251                 //out->lightmapinfo->styles[3] = 255;
6252         }
6253
6254         i = oldi;
6255         out = oldout;
6256         for (;i < count;i++, out++)
6257         {
6258                 if(out->num_vertices && out->num_triangles)
6259                         continue;
6260                 if(out->num_vertices == 0)
6261                 {
6262                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d (texture %s) has no vertices, ignoring\n", i, out->texture ? out->texture->name : "(none)");
6263                         if(out->num_triangles == 0)
6264                                 Con_Printf("Mod_Q3BSP_LoadFaces: surface %d (texture %s) has no triangles, ignoring\n", i, out->texture ? out->texture->name : "(none)");
6265                 }
6266                 else if(out->num_triangles == 0)
6267                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d (texture %s, near %f %f %f) has no triangles, ignoring\n", i, out->texture ? out->texture->name : "(none)",
6268                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[0 * 3 + 0],
6269                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[1 * 3 + 0],
6270                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[2 * 3 + 0]);
6271         }
6272
6273         // for per pixel lighting
6274         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, r_smoothnormals_areaweighting.integer != 0);
6275
6276         // generate ushort elements array if possible
6277         if (loadmodel->surfmesh.data_element3s)
6278                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
6279                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
6280
6281         // free the no longer needed vertex data
6282         loadmodel->brushq3.num_vertices = 0;
6283         if (loadmodel->brushq3.data_vertex3f)
6284                 Mem_Free(loadmodel->brushq3.data_vertex3f);
6285         loadmodel->brushq3.data_vertex3f = NULL;
6286         loadmodel->brushq3.data_normal3f = NULL;
6287         loadmodel->brushq3.data_texcoordtexture2f = NULL;
6288         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
6289         loadmodel->brushq3.data_color4f = NULL;
6290         // free the no longer needed triangle data
6291         loadmodel->brushq3.num_triangles = 0;
6292         if (loadmodel->brushq3.data_element3i)
6293                 Mem_Free(loadmodel->brushq3.data_element3i);
6294         loadmodel->brushq3.data_element3i = NULL;
6295
6296         if(patchtess)
6297                 Mem_Free(patchtess);
6298 }
6299
6300 static void Mod_Q3BSP_LoadModels(lump_t *l)
6301 {
6302         q3dmodel_t *in;
6303         q3dmodel_t *out;
6304         int i, j, n, c, count;
6305
6306         in = (q3dmodel_t *)(mod_base + l->fileofs);
6307         if (l->filelen % sizeof(*in))
6308                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
6309         count = l->filelen / sizeof(*in);
6310         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6311
6312         loadmodel->brushq3.data_models = out;
6313         loadmodel->brushq3.num_models = count;
6314
6315         for (i = 0;i < count;i++, in++, out++)
6316         {
6317                 for (j = 0;j < 3;j++)
6318                 {
6319                         out->mins[j] = LittleFloat(in->mins[j]);
6320                         out->maxs[j] = LittleFloat(in->maxs[j]);
6321                 }
6322                 n = LittleLong(in->firstface);
6323                 c = LittleLong(in->numfaces);
6324                 if (n < 0 || n + c > loadmodel->num_surfaces)
6325                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
6326                 out->firstface = n;
6327                 out->numfaces = c;
6328                 n = LittleLong(in->firstbrush);
6329                 c = LittleLong(in->numbrushes);
6330                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
6331                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
6332                 out->firstbrush = n;
6333                 out->numbrushes = c;
6334         }
6335 }
6336
6337 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
6338 {
6339         int *in;
6340         int *out;
6341         int i, n, count;
6342
6343         in = (int *)(mod_base + l->fileofs);
6344         if (l->filelen % sizeof(*in))
6345                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
6346         count = l->filelen / sizeof(*in);
6347         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6348
6349         loadmodel->brush.data_leafbrushes = out;
6350         loadmodel->brush.num_leafbrushes = count;
6351
6352         for (i = 0;i < count;i++, in++, out++)
6353         {
6354                 n = LittleLong(*in);
6355                 if (n < 0 || n >= loadmodel->brush.num_brushes)
6356                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
6357                 *out = n;
6358         }
6359 }
6360
6361 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
6362 {
6363         int *in;
6364         int *out;
6365         int i, n, count;
6366
6367         in = (int *)(mod_base + l->fileofs);
6368         if (l->filelen % sizeof(*in))
6369                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
6370         count = l->filelen / sizeof(*in);
6371         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6372
6373         loadmodel->brush.data_leafsurfaces = out;
6374         loadmodel->brush.num_leafsurfaces = count;
6375
6376         for (i = 0;i < count;i++, in++, out++)
6377         {
6378                 n = LittleLong(*in);
6379                 if (n < 0 || n >= loadmodel->num_surfaces)
6380                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
6381                 *out = n;
6382         }
6383 }
6384
6385 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
6386 {
6387         q3dleaf_t *in;
6388         mleaf_t *out;
6389         int i, j, n, c, count;
6390
6391         in = (q3dleaf_t *)(mod_base + l->fileofs);
6392         if (l->filelen % sizeof(*in))
6393                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
6394         count = l->filelen / sizeof(*in);
6395         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6396
6397         loadmodel->brush.data_leafs = out;
6398         loadmodel->brush.num_leafs = count;
6399
6400         for (i = 0;i < count;i++, in++, out++)
6401         {
6402                 out->parent = NULL;
6403                 out->plane = NULL;
6404                 out->clusterindex = LittleLong(in->clusterindex);
6405                 out->areaindex = LittleLong(in->areaindex);
6406                 for (j = 0;j < 3;j++)
6407                 {
6408                         // yes the mins/maxs are ints
6409                         out->mins[j] = LittleLong(in->mins[j]) - 1;
6410                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
6411                 }
6412                 n = LittleLong(in->firstleafface);
6413                 c = LittleLong(in->numleaffaces);
6414                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
6415                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
6416                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
6417                 out->numleafsurfaces = c;
6418                 n = LittleLong(in->firstleafbrush);
6419                 c = LittleLong(in->numleafbrushes);
6420                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
6421                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
6422                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
6423                 out->numleafbrushes = c;
6424         }
6425 }
6426
6427 static void Mod_Q3BSP_LoadNodes(lump_t *l)
6428 {
6429         q3dnode_t *in;
6430         mnode_t *out;
6431         int i, j, n, count;
6432
6433         in = (q3dnode_t *)(mod_base + l->fileofs);
6434         if (l->filelen % sizeof(*in))
6435                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
6436         count = l->filelen / sizeof(*in);
6437         if (count == 0)
6438                 Host_Error("Mod_Q3BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
6439         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6440
6441         loadmodel->brush.data_nodes = out;
6442         loadmodel->brush.num_nodes = count;
6443
6444         for (i = 0;i < count;i++, in++, out++)
6445         {
6446                 out->parent = NULL;
6447                 n = LittleLong(in->planeindex);
6448                 if (n < 0 || n >= loadmodel->brush.num_planes)
6449                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
6450                 out->plane = loadmodel->brush.data_planes + n;
6451                 for (j = 0;j < 2;j++)
6452                 {
6453                         n = LittleLong(in->childrenindex[j]);
6454                         if (n >= 0)
6455                         {
6456                                 if (n >= loadmodel->brush.num_nodes)
6457                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
6458                                 out->children[j] = loadmodel->brush.data_nodes + n;
6459                         }
6460                         else
6461                         {
6462                                 n = -1 - n;
6463                                 if (n >= loadmodel->brush.num_leafs)
6464                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
6465                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
6466                         }
6467                 }
6468                 for (j = 0;j < 3;j++)
6469                 {
6470                         // yes the mins/maxs are ints
6471                         out->mins[j] = LittleLong(in->mins[j]) - 1;
6472                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
6473                 }
6474         }
6475
6476         // set the parent pointers
6477         Mod_BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
6478 }
6479
6480 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
6481 {
6482         q3dlightgrid_t *in;
6483         q3dlightgrid_t *out;
6484         int count;
6485         int i;
6486         int texturesize[3];
6487         unsigned char *texturergba, *texturelayer[3], *texturepadding[2];
6488         double lightgridmatrix[4][4];
6489
6490         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
6491         if (l->filelen % sizeof(*in))
6492                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
6493         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
6494         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
6495         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
6496         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
6497         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
6498         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
6499         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
6500         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
6501         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
6502         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
6503         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
6504         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
6505         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
6506         Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
6507         Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
6508
6509         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
6510         if (l->filelen)
6511         {
6512                 if (l->filelen < count * (int)sizeof(*in))
6513                 {
6514                         Con_Printf(CON_ERROR "Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_isize[0], loadmodel->brushq3.num_lightgrid_isize[1], loadmodel->brushq3.num_lightgrid_isize[2]);
6515                         return; // ignore the grid if we cannot understand it
6516                 }
6517                 if (l->filelen != count * (int)sizeof(*in))
6518                         Con_Printf(CON_WARN "Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
6519                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
6520                 loadmodel->brushq3.data_lightgrid = out;
6521                 loadmodel->brushq3.num_lightgrid = count;
6522                 // no swapping or validation necessary
6523                 memcpy(out, in, count * (int)sizeof(*out));
6524
6525                 if(mod_q3bsp_sRGBlightmaps.integer)
6526                 {
6527                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
6528                         {
6529                                 // we fix the brightness consistently via lightmapscale
6530                         }
6531                         else
6532                         {
6533                                 for(i = 0; i < count; ++i)
6534                                 {
6535                                         out[i].ambientrgb[0] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[0]) * 255.0f + 0.5f);
6536                                         out[i].ambientrgb[1] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[1]) * 255.0f + 0.5f);
6537                                         out[i].ambientrgb[2] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[2]) * 255.0f + 0.5f);
6538                                         out[i].diffusergb[0] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[0]) * 255.0f + 0.5f);
6539                                         out[i].diffusergb[1] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[1]) * 255.0f + 0.5f);
6540                                         out[i].diffusergb[2] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[2]) * 255.0f + 0.5f);
6541                                 }
6542                         }
6543                 }
6544                 else
6545                 {
6546                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
6547                         {
6548                                 for(i = 0; i < count; ++i)
6549                                 {
6550                                         out[i].ambientrgb[0] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[0]) * 255.0f + 0.5f);
6551                                         out[i].ambientrgb[1] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[1]) * 255.0f + 0.5f);
6552                                         out[i].ambientrgb[2] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[2]) * 255.0f + 0.5f);
6553                                         out[i].diffusergb[0] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[0]) * 255.0f + 0.5f);
6554                                         out[i].diffusergb[1] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[1]) * 255.0f + 0.5f);
6555                                         out[i].diffusergb[2] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[2]) * 255.0f + 0.5f);
6556                                 }
6557                         }
6558                         else
6559                         {
6560                                 // all is good
6561                         }
6562                 }
6563
6564                 if (mod_q3bsp_lightgrid_texture.integer)
6565                 {
6566                         // build a texture to hold the data for per-pixel sampling
6567                         // this has 3 different kinds of data stacked in it:
6568                         // ambient color
6569                         // bent-normal light color
6570                         // bent-normal light dir
6571
6572                         texturesize[0] = loadmodel->brushq3.num_lightgrid_isize[0];
6573                         texturesize[1] = loadmodel->brushq3.num_lightgrid_isize[1];
6574                         texturesize[2] = (loadmodel->brushq3.num_lightgrid_isize[2] + 2) * 3;
6575                         texturergba = (unsigned char*)Mem_Alloc(loadmodel->mempool, texturesize[0] * texturesize[1] * texturesize[2] * sizeof(char[4]));
6576                         texturelayer[0] = texturergba + loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * 4;
6577                         texturelayer[1] = texturelayer[0] + (loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * (loadmodel->brushq3.num_lightgrid_isize[2] + 2)) * 4;
6578                         texturelayer[2] = texturelayer[1] + (loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * (loadmodel->brushq3.num_lightgrid_isize[2] + 2)) * 4;
6579                         // the light dir layer needs padding above/below it that is a neutral unsigned normal (127,127,127,255)
6580                         texturepadding[0] = texturelayer[2] - loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * 4;
6581                         texturepadding[1] = texturelayer[2] + loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2] * 4;
6582                         for (i = 0; i < texturesize[0] * texturesize[1]; i++)
6583                         {
6584                                 texturepadding[0][i * 4] = texturepadding[1][i * 4] = 127;
6585                                 texturepadding[0][i * 4 + 1] = texturepadding[1][i * 4 + 1] = 127;
6586                                 texturepadding[0][i * 4 + 2] = texturepadding[1][i * 4 + 2] = 127;
6587                                 texturepadding[0][i * 4 + 3] = texturepadding[1][i * 4 + 3] = 255;
6588                         }
6589                         for (i = 0; i < count; i++)
6590                         {
6591                                 texturelayer[0][i * 4 + 0] = out[i].ambientrgb[0];
6592                                 texturelayer[0][i * 4 + 1] = out[i].ambientrgb[1];
6593                                 texturelayer[0][i * 4 + 2] = out[i].ambientrgb[2];
6594                                 texturelayer[0][i * 4 + 3] = 255;
6595                                 texturelayer[1][i * 4 + 0] = out[i].diffusergb[0];
6596                                 texturelayer[1][i * 4 + 1] = out[i].diffusergb[1];
6597                                 texturelayer[1][i * 4 + 2] = out[i].diffusergb[2];
6598                                 texturelayer[1][i * 4 + 3] = 255;
6599                                 // this uses the mod_md3_sin table because the values are
6600                                 // already in the 0-255 range, the 64+ bias fetches a cosine
6601                                 // instead of a sine value
6602                                 texturelayer[2][i * 4 + 0] = (char)((mod_md3_sin[64 + out[i].diffuseyaw] * mod_md3_sin[out[i].diffusepitch]) * 127 + 127);
6603                                 texturelayer[2][i * 4 + 1] = (char)((mod_md3_sin[out[i].diffuseyaw] * mod_md3_sin[out[i].diffusepitch]) * 127 + 127);
6604                                 texturelayer[2][i * 4 + 2] = (char)((mod_md3_sin[64 + out[i].diffusepitch]) * 127 + 127);
6605                                 texturelayer[2][i * 4 + 3] = 255;
6606                         }
6607 #if 0
6608                         // debugging hack
6609                         int x, y, z;
6610                         for (z = 0; z < loadmodel->brushq3.num_lightgrid_isize[2]; z++)
6611                         {
6612                                 for (y = 0; y < loadmodel->brushq3.num_lightgrid_isize[1]; y++)
6613                                 {
6614                                         for (x = 0; x < loadmodel->brushq3.num_lightgrid_isize[0]; x++)
6615                                         {
6616                                                 i = (z * texturesize[1] + y) * texturesize[0] + x;
6617                                                 texturelayer[0][i * 4 + 0] = x * 256 / loadmodel->brushq3.num_lightgrid_isize[0];
6618                                                 texturelayer[0][i * 4 + 1] = y * 256 / loadmodel->brushq3.num_lightgrid_isize[1];
6619                                                 texturelayer[0][i * 4 + 2] = z * 256 / loadmodel->brushq3.num_lightgrid_isize[2];
6620                                         }
6621                                 }
6622                         }
6623 #endif
6624                         loadmodel->brushq3.lightgridtexturesize[0] = texturesize[0];
6625                         loadmodel->brushq3.lightgridtexturesize[1] = texturesize[1];
6626                         loadmodel->brushq3.lightgridtexturesize[2] = texturesize[2];
6627                         memset(lightgridmatrix[0], 0, sizeof(lightgridmatrix));
6628                         lightgridmatrix[0][0] = loadmodel->brushq3.num_lightgrid_scale[0] / texturesize[0];
6629                         lightgridmatrix[1][1] = loadmodel->brushq3.num_lightgrid_scale[1] / texturesize[1];
6630                         lightgridmatrix[2][2] = loadmodel->brushq3.num_lightgrid_scale[2] / texturesize[2];
6631                         lightgridmatrix[0][3] = -(loadmodel->brushq3.num_lightgrid_imins[0] - 0.5f) / texturesize[0];
6632                         lightgridmatrix[1][3] = -(loadmodel->brushq3.num_lightgrid_imins[1] - 0.5f) / texturesize[1];
6633                         lightgridmatrix[2][3] = -(loadmodel->brushq3.num_lightgrid_imins[2] - 1.5f) / texturesize[2];
6634                         lightgridmatrix[3][3] = 1;
6635                         Matrix4x4_FromArrayDoubleD3D(&loadmodel->brushq3.lightgridworldtotexturematrix, lightgridmatrix[0]);
6636                         loadmodel->brushq3.lightgridtexture = R_LoadTexture3D(loadmodel->texturepool, "lightgrid", texturesize[0], texturesize[1], texturesize[2], texturergba, TEXTYPE_RGBA, TEXF_CLAMP, 0, NULL);
6637                         Mem_Free(texturergba);
6638                 }
6639         }
6640 }
6641
6642 static void Mod_Q3BSP_LoadPVS(lump_t *l)
6643 {
6644         q3dpvs_t *in;
6645         int totalchains;
6646
6647         if (l->filelen == 0)
6648         {
6649                 int i;
6650                 // unvised maps often have cluster indices even without pvs, so check
6651                 // leafs to find real number of clusters
6652                 loadmodel->brush.num_pvsclusters = 1;
6653                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
6654                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
6655
6656                 // create clusters
6657                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
6658                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
6659                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
6660                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
6661                 return;
6662         }
6663
6664         in = (q3dpvs_t *)(mod_base + l->fileofs);
6665         if (l->filelen < 9)
6666                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
6667
6668         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
6669         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
6670         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
6671                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
6672         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
6673         if (l->filelen < totalchains + (int)sizeof(*in))
6674                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
6675
6676         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
6677         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
6678 }
6679
6680 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
6681 {
6682         int i, j, k, index[3];
6683         float transformed[3], blend1, blend2, blend, stylescale = 1;
6684         q3dlightgrid_t *a, *s;
6685
6686         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
6687         // LadyHavoc: FIXME: is this true?
6688         stylescale = 1; // added while render
6689         //stylescale = r_refdef.scene.rtlightstylevalue[0];
6690
6691         if (!model->brushq3.num_lightgrid)
6692         {
6693                 ambientcolor[0] = stylescale;
6694                 ambientcolor[1] = stylescale;
6695                 ambientcolor[2] = stylescale;
6696                 return;
6697         }
6698
6699         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
6700         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
6701         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
6702         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
6703         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
6704         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
6705         index[0] = (int)floor(transformed[0]);
6706         index[1] = (int)floor(transformed[1]);
6707         index[2] = (int)floor(transformed[2]);
6708         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
6709
6710         // now lerp the values
6711         VectorClear(diffusenormal);
6712         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
6713         for (k = 0;k < 2;k++)
6714         {
6715                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
6716                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
6717                         continue;
6718                 for (j = 0;j < 2;j++)
6719                 {
6720                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
6721                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
6722                                 continue;
6723                         for (i = 0;i < 2;i++)
6724                         {
6725                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
6726                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
6727                                         continue;
6728                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
6729                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
6730                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
6731                                 // this uses the mod_md3_sin table because the values are
6732                                 // already in the 0-255 range, the 64+ bias fetches a cosine
6733                                 // instead of a sine value
6734                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
6735                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
6736                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
6737                                 //Con_Printf("blend %f: ambient %i %i %i, diffuse %i %i %i, diffusepitch %i diffuseyaw %i (%f %f, normal %f %f %f)\n", blend, s->ambientrgb[0], s->ambientrgb[1], s->ambientrgb[2], s->diffusergb[0], s->diffusergb[1], s->diffusergb[2], s->diffusepitch, s->diffuseyaw, pitch, yaw, (cos(yaw) * cospitch), (sin(yaw) * cospitch), (-sin(pitch)));
6738                         }
6739                 }
6740         }
6741
6742         // normalize the light direction before turning
6743         VectorNormalize(diffusenormal);
6744         //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
6745 }
6746
6747 static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3], double endpos[3])
6748 {
6749         double t1, t2;
6750         double midf, mid[3];
6751         int ret, side;
6752
6753         // check for empty
6754         while (node->plane)
6755         {
6756                 // find the point distances
6757                 mplane_t *plane = node->plane;
6758                 if (plane->type < 3)
6759                 {
6760                         t1 = p1[plane->type] - plane->dist;
6761                         t2 = p2[plane->type] - plane->dist;
6762                 }
6763                 else
6764                 {
6765                         t1 = DotProduct (plane->normal, p1) - plane->dist;
6766                         t2 = DotProduct (plane->normal, p2) - plane->dist;
6767                 }
6768
6769                 if (t1 < 0)
6770                 {
6771                         if (t2 < 0)
6772                         {
6773                                 node = node->children[1];
6774                                 continue;
6775                         }
6776                         side = 1;
6777                 }
6778                 else
6779                 {
6780                         if (t2 >= 0)
6781                         {
6782                                 node = node->children[0];
6783                                 continue;
6784                         }
6785                         side = 0;
6786                 }
6787
6788                 midf = t1 / (t1 - t2);
6789                 VectorLerp(p1, midf, p2, mid);
6790
6791                 // recurse both sides, front side first
6792                 // return 2 if empty is followed by solid (hit something)
6793                 // do not return 2 if both are solid or both empty,
6794                 // or if start is solid and end is empty
6795                 // as these degenerate cases usually indicate the eye is in solid and
6796                 // should see the target point anyway
6797                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid, endpos);
6798                 if (ret != 0)
6799                         return ret;
6800                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2, endpos);
6801                 if (ret != 1)
6802                         return ret;
6803                 VectorCopy(mid, endpos);
6804                 return 2;
6805         }
6806         return ((mleaf_t *)node)->clusterindex < 0;
6807 }
6808
6809 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
6810 {
6811         if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
6812         {
6813                 trace_t trace;
6814                 model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
6815                 return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
6816         }
6817         else
6818         {
6819                 double tracestart[3], traceend[3], traceendpos[3];
6820                 VectorCopy(start, tracestart);
6821                 VectorCopy(end, traceend);
6822                 VectorCopy(end, traceendpos);
6823                 Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend, traceendpos);
6824                 return BoxesOverlap(traceendpos, traceendpos, acceptmins, acceptmaxs);
6825         }
6826 }
6827
6828 void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
6829 {
6830         const bih_t *bih;
6831         const bih_leaf_t *leaf;
6832         const bih_node_t *node;
6833         const colbrushf_t *brush;
6834         int axis;
6835         int nodenum;
6836         int nodestackpos = 0;
6837         int nodestack[1024];
6838
6839         memset(trace, 0, sizeof(*trace));
6840         trace->fraction = 1;
6841         trace->hitsupercontentsmask = hitsupercontentsmask;
6842         trace->skipsupercontentsmask = skipsupercontentsmask;
6843         trace->skipmaterialflagsmask = skipmaterialflagsmask;
6844
6845         bih = &model->collision_bih;
6846         if(!bih->nodes)
6847                 return;
6848
6849         nodenum = bih->rootnode;
6850         nodestack[nodestackpos++] = nodenum;
6851         while (nodestackpos)
6852         {
6853                 nodenum = nodestack[--nodestackpos];
6854                 node = bih->nodes + nodenum;
6855 #if 1
6856                 if (!BoxesOverlap(start, start, node->mins, node->maxs))
6857                         continue;
6858 #endif
6859                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
6860                 {
6861                         axis = node->type - BIH_SPLITX;
6862                         if (start[axis] >= node->frontmin)
6863                                 nodestack[nodestackpos++] = node->front;
6864                         if (start[axis] <= node->backmax)
6865                                 nodestack[nodestackpos++] = node->back;
6866                 }
6867                 else if (node->type == BIH_UNORDERED)
6868                 {
6869                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
6870                         {
6871                                 leaf = bih->leafs + node->children[axis];
6872 #if 1
6873                                 if (!BoxesOverlap(start, start, leaf->mins, leaf->maxs))
6874                                         continue;
6875 #endif
6876                                 switch(leaf->type)
6877                                 {
6878                                 case BIH_BRUSH:
6879                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6880                                         Collision_TracePointBrushFloat(trace, start, brush);
6881                                         break;
6882                                 case BIH_COLLISIONTRIANGLE:
6883                                         // collision triangle - skipped because they have no volume
6884                                         break;
6885                                 case BIH_RENDERTRIANGLE:
6886                                         // render triangle - skipped because they have no volume
6887                                         break;
6888                                 }
6889                         }
6890                 }
6891         }
6892 }
6893
6894 static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, const bih_t *bih)
6895 {
6896         const bih_leaf_t *leaf;
6897         const bih_node_t *node;
6898         const colbrushf_t *brush;
6899         const int *e;
6900         const texture_t *texture;
6901         vec3_t nodebigmins, nodebigmaxs, nodestart, nodeend, sweepnodemins, sweepnodemaxs;
6902         vec_t d1, d2, d3, d4, f, nodestackline[1024][6];
6903         int axis, nodenum, nodestackpos = 0, nodestack[1024];
6904
6905         if(!bih->nodes)
6906                 return;
6907
6908         if (VectorCompare(start, end))
6909         {
6910                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
6911                 return;
6912         }
6913
6914         nodenum = bih->rootnode;
6915
6916         memset(trace, 0, sizeof(*trace));
6917         trace->fraction = 1;
6918         trace->hitsupercontentsmask = hitsupercontentsmask;
6919         trace->skipsupercontentsmask = skipsupercontentsmask;
6920         trace->skipmaterialflagsmask = skipmaterialflagsmask;
6921
6922         // push first node
6923         nodestackline[nodestackpos][0] = start[0];
6924         nodestackline[nodestackpos][1] = start[1];
6925         nodestackline[nodestackpos][2] = start[2];
6926         nodestackline[nodestackpos][3] = end[0];
6927         nodestackline[nodestackpos][4] = end[1];
6928         nodestackline[nodestackpos][5] = end[2];
6929         nodestack[nodestackpos++] = nodenum;
6930         while (nodestackpos)
6931         {
6932                 nodenum = nodestack[--nodestackpos];
6933                 node = bih->nodes + nodenum;
6934                 VectorCopy(nodestackline[nodestackpos], nodestart);
6935                 VectorCopy(nodestackline[nodestackpos] + 3, nodeend);
6936                 sweepnodemins[0] = min(nodestart[0], nodeend[0]) - 1;
6937                 sweepnodemins[1] = min(nodestart[1], nodeend[1]) - 1;
6938                 sweepnodemins[2] = min(nodestart[2], nodeend[2]) - 1;
6939                 sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + 1;
6940                 sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + 1;
6941                 sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + 1;
6942                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs) && !collision_bih_fullrecursion.integer)
6943                         continue;
6944                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
6945                 {
6946                         // recurse children of the split
6947                         axis = node->type - BIH_SPLITX;
6948                         d1 = node->backmax - nodestart[axis];
6949                         d2 = node->backmax - nodeend[axis];
6950                         d3 = nodestart[axis] - node->frontmin;
6951                         d4 = nodeend[axis] - node->frontmin;
6952                         if (collision_bih_fullrecursion.integer)
6953                                 d1 = d2 = d3 = d4 = 1; // force full recursion
6954                         switch((d1 < 0) | ((d2 < 0) << 1) | ((d3 < 0) << 2) | ((d4 < 0) << 3))
6955                         {
6956                         case  0: /* >>>> */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6957                         case  1: /* <>>> */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6958                         case  2: /* ><>> */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6959                         case  3: /* <<>> */                                                                                                                                                                                                                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6960                         case  4: /* >><> */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6961                         case  5: /* <><> */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6962                         case  6: /* ><<> */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6963                         case  7: /* <<<> */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6964                         case  8: /* >>>< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6965                         case  9: /* <>>< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6966                         case 10: /* ><>< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6967                         case 11: /* <<>< */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6968                         case 12: /* >><< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6969                         case 13: /* <><< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6970                         case 14: /* ><<< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6971                         case 15: /* <<<< */                                                                                                                                                                                                                                                                                                                                                                                                   break;
6972                         }
6973                 }
6974                 else if (node->type == BIH_UNORDERED)
6975                 {
6976                         // calculate sweep bounds for this node
6977                         // copy node bounds into local variables
6978                         VectorCopy(node->mins, nodebigmins);
6979                         VectorCopy(node->maxs, nodebigmaxs);
6980                         // clip line to this node bounds
6981                         axis = 0; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
6982                         axis = 1; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
6983                         axis = 2; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
6984                         // some of the line intersected the enlarged node box
6985                         // calculate sweep bounds for this node
6986                         sweepnodemins[0] = min(nodestart[0], nodeend[0]) - 1;
6987                         sweepnodemins[1] = min(nodestart[1], nodeend[1]) - 1;
6988                         sweepnodemins[2] = min(nodestart[2], nodeend[2]) - 1;
6989                         sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + 1;
6990                         sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + 1;
6991                         sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + 1;
6992                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
6993                         {
6994                                 leaf = bih->leafs + node->children[axis];
6995                                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, leaf->mins, leaf->maxs))
6996                                         continue;
6997                                 switch(leaf->type)
6998                                 {
6999                                 case BIH_BRUSH:
7000                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
7001                                         Collision_TraceLineBrushFloat(trace, start, end, brush, brush);
7002                                         break;
7003                                 case BIH_COLLISIONTRIANGLE:
7004                                         if (!mod_q3bsp_curves_collisions.integer)
7005                                                 continue;
7006                                         e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
7007                                         texture = model->data_textures + leaf->textureindex;
7008                                         Collision_TraceLineTriangleFloat(trace, start, end, model->brush.data_collisionvertex3f + e[0] * 3, model->brush.data_collisionvertex3f + e[1] * 3, model->brush.data_collisionvertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
7009                                         break;
7010                                 case BIH_RENDERTRIANGLE:
7011                                         e = model->surfmesh.data_element3i + 3*leaf->itemindex;
7012                                         texture = model->data_textures + leaf->textureindex;
7013                                         Collision_TraceLineTriangleFloat(trace, start, end, model->surfmesh.data_vertex3f + e[0] * 3, model->surfmesh.data_vertex3f + e[1] * 3, model->surfmesh.data_vertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
7014                                         break;
7015                                 }
7016                         }
7017                 }
7018         }
7019 }
7020
7021 void Mod_CollisionBIH_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
7022 {
7023         if (VectorCompare(start, end))
7024         {
7025                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7026                 return;
7027         }
7028         Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, &model->collision_bih);
7029 }
7030
7031 void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *thisbrush_start, colbrushf_t *thisbrush_end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
7032 {
7033         const bih_t *bih;
7034         const bih_leaf_t *leaf;
7035         const bih_node_t *node;
7036         const colbrushf_t *brush;
7037         const int *e;
7038         const texture_t *texture;
7039         vec3_t start, end, startmins, startmaxs, endmins, endmaxs, mins, maxs;
7040         vec3_t nodebigmins, nodebigmaxs, nodestart, nodeend, sweepnodemins, sweepnodemaxs;
7041         vec_t d1, d2, d3, d4, f, nodestackline[1024][6];
7042         int axis, nodenum, nodestackpos = 0, nodestack[1024];
7043
7044         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(thisbrush_start->mins, thisbrush_start->maxs) && VectorCompare(thisbrush_end->mins, thisbrush_end->maxs))
7045         {
7046                 if (VectorCompare(thisbrush_start->mins, thisbrush_end->mins))
7047                         Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, thisbrush_start->mins, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7048                 else
7049                         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, thisbrush_start->mins, thisbrush_end->mins, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7050                 return;
7051         }
7052
7053         bih = &model->collision_bih;
7054         if(!bih->nodes)
7055                 return;
7056         nodenum = bih->rootnode;
7057
7058         // box trace, performed as brush trace
7059         memset(trace, 0, sizeof(*trace));
7060         trace->fraction = 1;
7061         trace->hitsupercontentsmask = hitsupercontentsmask;
7062         trace->skipsupercontentsmask = skipsupercontentsmask;
7063         trace->skipmaterialflagsmask = skipmaterialflagsmask;
7064
7065         // calculate tracebox-like parameters for efficient culling
7066         VectorMAM(0.5f, thisbrush_start->mins, 0.5f, thisbrush_start->maxs, start);
7067         VectorMAM(0.5f, thisbrush_end->mins, 0.5f, thisbrush_end->maxs, end);
7068         VectorSubtract(thisbrush_start->mins, start, startmins);
7069         VectorSubtract(thisbrush_start->maxs, start, startmaxs);
7070         VectorSubtract(thisbrush_end->mins, end, endmins);
7071         VectorSubtract(thisbrush_end->maxs, end, endmaxs);
7072         mins[0] = min(startmins[0], endmins[0]);
7073         mins[1] = min(startmins[1], endmins[1]);
7074         mins[2] = min(startmins[2], endmins[2]);
7075         maxs[0] = max(startmaxs[0], endmaxs[0]);
7076         maxs[1] = max(startmaxs[1], endmaxs[1]);
7077         maxs[2] = max(startmaxs[2], endmaxs[2]);
7078
7079         // push first node
7080         nodestackline[nodestackpos][0] = start[0];
7081         nodestackline[nodestackpos][1] = start[1];
7082         nodestackline[nodestackpos][2] = start[2];
7083         nodestackline[nodestackpos][3] = end[0];
7084         nodestackline[nodestackpos][4] = end[1];
7085         nodestackline[nodestackpos][5] = end[2];
7086         nodestack[nodestackpos++] = nodenum;
7087         while (nodestackpos)
7088         {
7089                 nodenum = nodestack[--nodestackpos];
7090                 node = bih->nodes + nodenum;
7091                 VectorCopy(nodestackline[nodestackpos], nodestart);
7092                 VectorCopy(nodestackline[nodestackpos] + 3, nodeend);
7093                 sweepnodemins[0] = min(nodestart[0], nodeend[0]) + mins[0] - 1;
7094                 sweepnodemins[1] = min(nodestart[1], nodeend[1]) + mins[1] - 1;
7095                 sweepnodemins[2] = min(nodestart[2], nodeend[2]) + mins[2] - 1;
7096                 sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + maxs[0] + 1;
7097                 sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + maxs[1] + 1;
7098                 sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + maxs[2] + 1;
7099                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs))
7100                         continue;
7101                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
7102                 {
7103                         // recurse children of the split
7104                         axis = node->type - BIH_SPLITX;
7105                         d1 = node->backmax - nodestart[axis] - mins[axis];
7106                         d2 = node->backmax - nodeend[axis] - mins[axis];
7107                         d3 = nodestart[axis] - node->frontmin + maxs[axis];
7108                         d4 = nodeend[axis] - node->frontmin + maxs[axis];
7109                         switch((d1 < 0) | ((d2 < 0) << 1) | ((d3 < 0) << 2) | ((d4 < 0) << 3))
7110                         {
7111                         case  0: /* >>>> */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7112                         case  1: /* <>>> */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7113                         case  2: /* ><>> */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7114                         case  3: /* <<>> */                                                                                                                                                                                                                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7115                         case  4: /* >><> */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7116                         case  5: /* <><> */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7117                         case  6: /* ><<> */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7118                         case  7: /* <<<> */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7119                         case  8: /* >>>< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7120                         case  9: /* <>>< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7121                         case 10: /* ><>< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7122                         case 11: /* <<>< */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
7123                         case 12: /* >><< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
7124                         case 13: /* <><< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
7125                         case 14: /* ><<< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
7126                         case 15: /* <<<< */                                                                                                                                                                                                                                                                                                                                                                                                   break;
7127                         }
7128                 }
7129                 else if (node->type == BIH_UNORDERED)
7130                 {
7131                         // calculate sweep bounds for this node
7132                         // copy node bounds into local variables and expand to get Minkowski Sum of the two shapes
7133                         VectorSubtract(node->mins, maxs, nodebigmins);
7134                         VectorSubtract(node->maxs, mins, nodebigmaxs);
7135                         // clip line to this node bounds
7136                         axis = 0; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
7137                         axis = 1; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
7138                         axis = 2; d1 = nodestart[axis] - nodebigmins[axis]; d2 = nodeend[axis] - nodebigmins[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); } d1 = nodebigmaxs[axis] - nodestart[axis]; d2 = nodebigmaxs[axis] - nodeend[axis]; if (d1 < 0) { if (d2 < 0) continue; f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestart); } else if (d2 < 0) { f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodeend); }
7139                         // some of the line intersected the enlarged node box
7140                         // calculate sweep bounds for this node
7141                         sweepnodemins[0] = min(nodestart[0], nodeend[0]) + mins[0] - 1;
7142                         sweepnodemins[1] = min(nodestart[1], nodeend[1]) + mins[1] - 1;
7143                         sweepnodemins[2] = min(nodestart[2], nodeend[2]) + mins[2] - 1;
7144                         sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + maxs[0] + 1;
7145                         sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + maxs[1] + 1;
7146                         sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + maxs[2] + 1;
7147                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
7148                         {
7149                                 leaf = bih->leafs + node->children[axis];
7150                                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, leaf->mins, leaf->maxs))
7151                                         continue;
7152                                 switch(leaf->type)
7153                                 {
7154                                 case BIH_BRUSH:
7155                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
7156                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
7157                                         break;
7158                                 case BIH_COLLISIONTRIANGLE:
7159                                         if (!mod_q3bsp_curves_collisions.integer)
7160                                                 continue;
7161                                         e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
7162                                         texture = model->data_textures + leaf->textureindex;
7163                                         Collision_TraceBrushTriangleFloat(trace, thisbrush_start, thisbrush_end, model->brush.data_collisionvertex3f + e[0] * 3, model->brush.data_collisionvertex3f + e[1] * 3, model->brush.data_collisionvertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
7164                                         break;
7165                                 case BIH_RENDERTRIANGLE:
7166                                         e = model->surfmesh.data_element3i + 3*leaf->itemindex;
7167                                         texture = model->data_textures + leaf->textureindex;
7168                                         Collision_TraceBrushTriangleFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.data_vertex3f + e[0] * 3, model->surfmesh.data_vertex3f + e[1] * 3, model->surfmesh.data_vertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
7169                                         break;
7170                                 }
7171                         }
7172                 }
7173         }
7174 }
7175
7176 void Mod_CollisionBIH_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
7177 {
7178         colboxbrushf_t thisbrush_start, thisbrush_end;
7179         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
7180
7181         // box trace, performed as brush trace
7182         VectorAdd(start, boxmins, boxstartmins);
7183         VectorAdd(start, boxmaxs, boxstartmaxs);
7184         VectorAdd(end, boxmins, boxendmins);
7185         VectorAdd(end, boxmaxs, boxendmaxs);
7186         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
7187         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
7188         Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7189 }
7190
7191
7192 int Mod_CollisionBIH_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
7193 {
7194         trace_t trace;
7195         Mod_CollisionBIH_TracePoint(model, NULL, NULL, &trace, point, 0, 0, 0);
7196         return trace.startsupercontents;
7197 }
7198
7199 qboolean Mod_CollisionBIH_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
7200 {
7201         trace_t trace;
7202         Mod_CollisionBIH_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
7203         return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
7204 }
7205
7206 void Mod_CollisionBIH_TracePoint_Mesh(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
7207 {
7208 #if 0
7209         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
7210         vec3_t end;
7211         int hitsupercontents;
7212         VectorSet(end, start[0], start[1], model->normalmins[2]);
7213 #endif
7214         memset(trace, 0, sizeof(*trace));
7215         trace->fraction = 1;
7216         trace->hitsupercontentsmask = hitsupercontentsmask;
7217         trace->skipsupercontentsmask = skipsupercontentsmask;
7218         trace->skipmaterialflagsmask = skipmaterialflagsmask;
7219 #if 0
7220         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7221         hitsupercontents = trace->hitsupercontents;
7222         memset(trace, 0, sizeof(*trace));
7223         trace->fraction = 1;
7224         trace->hitsupercontentsmask = hitsupercontentsmask;
7225         trace->skipsupercontentsmask = skipsupercontentsmask;
7226         trace->skipmaterialflagsmask = skipmaterialflagsmask;
7227         trace->startsupercontents = hitsupercontents;
7228 #endif
7229 }
7230
7231 int Mod_CollisionBIH_PointSuperContents_Mesh(struct model_s *model, int frame, const vec3_t start)
7232 {
7233 #if 0
7234         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
7235         trace_t trace;
7236         vec3_t end;
7237         VectorSet(end, start[0], start[1], model->normalmins[2]);
7238         memset(&trace, 0, sizeof(trace));
7239         trace.fraction = 1;
7240         trace.hitsupercontentsmask = hitsupercontentsmask;
7241         trace.skipsupercontentsmask = skipsupercontentsmask;
7242         trace.skipmaterialflagsmask = skipmaterialflagsmask;
7243         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
7244         return trace.hitsupercontents;
7245 #else
7246         return 0;
7247 #endif
7248 }
7249
7250 void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
7251 {
7252         Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, &model->render_bih);
7253 }
7254
7255
7256 bih_t *Mod_MakeCollisionBIH(dp_model_t *model, qboolean userendersurfaces, bih_t *out)
7257 {
7258         int j;
7259         int bihnumleafs;
7260         int bihmaxnodes;
7261         int brushindex;
7262         int triangleindex;
7263         int bihleafindex;
7264         int nummodelbrushes = model->nummodelbrushes;
7265         int nummodelsurfaces = model->nummodelsurfaces;
7266         const int *e;
7267         const int *collisionelement3i;
7268         const float *collisionvertex3f;
7269         const int *renderelement3i;
7270         const float *rendervertex3f;
7271         bih_leaf_t *bihleafs;
7272         bih_node_t *bihnodes;
7273         int *temp_leafsort;
7274         int *temp_leafsortscratch;
7275         const msurface_t *surface;
7276         const q3mbrush_t *brush;
7277
7278         // find out how many BIH leaf nodes we need
7279         bihnumleafs = 0;
7280         if (userendersurfaces)
7281         {
7282                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
7283                         bihnumleafs += surface->num_triangles;
7284         }
7285         else
7286         {
7287                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
7288                         if (brush->colbrushf)
7289                                 bihnumleafs++;
7290                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
7291                 {
7292                         if (surface->texture->basematerialflags & MATERIALFLAG_MESHCOLLISIONS)
7293                                 bihnumleafs += surface->num_triangles + surface->num_collisiontriangles;
7294                         else
7295                                 bihnumleafs += surface->num_collisiontriangles;
7296                 }
7297         }
7298
7299         if (!bihnumleafs)
7300                 return NULL;
7301
7302         // allocate the memory for the BIH leaf nodes
7303         bihleafs = (bih_leaf_t *)Mem_Alloc(loadmodel->mempool, sizeof(bih_leaf_t) * bihnumleafs);
7304
7305         // now populate the BIH leaf nodes
7306         bihleafindex = 0;
7307
7308         // add render surfaces
7309         renderelement3i = model->surfmesh.data_element3i;
7310         rendervertex3f = model->surfmesh.data_vertex3f;
7311         for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
7312         {
7313                 for (triangleindex = 0, e = renderelement3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
7314                 {
7315                         if (!userendersurfaces && !(surface->texture->basematerialflags & MATERIALFLAG_MESHCOLLISIONS))
7316                                 continue;
7317                         bihleafs[bihleafindex].type = BIH_RENDERTRIANGLE;
7318                         bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
7319                         bihleafs[bihleafindex].surfaceindex = surface - model->data_surfaces;
7320                         bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firsttriangle;
7321                         bihleafs[bihleafindex].mins[0] = min(rendervertex3f[3*e[0]+0], min(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) - 1;
7322                         bihleafs[bihleafindex].mins[1] = min(rendervertex3f[3*e[0]+1], min(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) - 1;
7323                         bihleafs[bihleafindex].mins[2] = min(rendervertex3f[3*e[0]+2], min(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) - 1;
7324                         bihleafs[bihleafindex].maxs[0] = max(rendervertex3f[3*e[0]+0], max(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) + 1;
7325                         bihleafs[bihleafindex].maxs[1] = max(rendervertex3f[3*e[0]+1], max(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) + 1;
7326                         bihleafs[bihleafindex].maxs[2] = max(rendervertex3f[3*e[0]+2], max(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) + 1;
7327                         bihleafindex++;
7328                 }
7329         }
7330
7331         if (!userendersurfaces)
7332         {
7333                 // add collision brushes
7334                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
7335                 {
7336                         if (!brush->colbrushf)
7337                                 continue;
7338                         bihleafs[bihleafindex].type = BIH_BRUSH;
7339                         bihleafs[bihleafindex].textureindex = brush->texture - model->data_textures;
7340                         bihleafs[bihleafindex].surfaceindex = -1;
7341                         bihleafs[bihleafindex].itemindex = brushindex+model->firstmodelbrush;
7342                         VectorCopy(brush->colbrushf->mins, bihleafs[bihleafindex].mins);
7343                         VectorCopy(brush->colbrushf->maxs, bihleafs[bihleafindex].maxs);
7344                         bihleafindex++;
7345                 }
7346
7347                 // add collision surfaces
7348                 collisionelement3i = model->brush.data_collisionelement3i;
7349                 collisionvertex3f = model->brush.data_collisionvertex3f;
7350                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
7351                 {
7352                         for (triangleindex = 0, e = collisionelement3i + 3*surface->num_firstcollisiontriangle;triangleindex < surface->num_collisiontriangles;triangleindex++, e += 3)
7353                         {
7354                                 bihleafs[bihleafindex].type = BIH_COLLISIONTRIANGLE;
7355                                 bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
7356                                 bihleafs[bihleafindex].surfaceindex = surface - model->data_surfaces;
7357                                 bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firstcollisiontriangle;
7358                                 bihleafs[bihleafindex].mins[0] = min(collisionvertex3f[3*e[0]+0], min(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) - 1;
7359                                 bihleafs[bihleafindex].mins[1] = min(collisionvertex3f[3*e[0]+1], min(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) - 1;
7360                                 bihleafs[bihleafindex].mins[2] = min(collisionvertex3f[3*e[0]+2], min(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) - 1;
7361                                 bihleafs[bihleafindex].maxs[0] = max(collisionvertex3f[3*e[0]+0], max(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) + 1;
7362                                 bihleafs[bihleafindex].maxs[1] = max(collisionvertex3f[3*e[0]+1], max(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) + 1;
7363                                 bihleafs[bihleafindex].maxs[2] = max(collisionvertex3f[3*e[0]+2], max(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) + 1;
7364                                 bihleafindex++;
7365                         }
7366                 }
7367         }
7368
7369         // allocate buffers for the produced and temporary data
7370         bihmaxnodes = bihnumleafs + 1;
7371         bihnodes = (bih_node_t *)Mem_Alloc(loadmodel->mempool, sizeof(bih_node_t) * bihmaxnodes);
7372         temp_leafsort = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int) * bihnumleafs * 2);
7373         temp_leafsortscratch = temp_leafsort + bihnumleafs;
7374
7375         // now build it
7376         BIH_Build(out, bihnumleafs, bihleafs, bihmaxnodes, bihnodes, temp_leafsort, temp_leafsortscratch);
7377
7378         // we're done with the temporary data
7379         Mem_Free(temp_leafsort);
7380
7381         // resize the BIH nodes array if it over-allocated
7382         if (out->maxnodes > out->numnodes)
7383         {
7384                 out->maxnodes = out->numnodes;
7385                 out->nodes = (bih_node_t *)Mem_Realloc(loadmodel->mempool, out->nodes, out->numnodes * sizeof(bih_node_t));
7386         }
7387
7388         return out;
7389 }
7390
7391 static int Mod_Q3BSP_SuperContentsFromNativeContents(int nativecontents)
7392 {
7393         int supercontents = 0;
7394         if (nativecontents & CONTENTSQ3_SOLID)
7395                 supercontents |= SUPERCONTENTS_SOLID;
7396         if (nativecontents & CONTENTSQ3_WATER)
7397                 supercontents |= SUPERCONTENTS_WATER;
7398         if (nativecontents & CONTENTSQ3_SLIME)
7399                 supercontents |= SUPERCONTENTS_SLIME;
7400         if (nativecontents & CONTENTSQ3_LAVA)
7401                 supercontents |= SUPERCONTENTS_LAVA;
7402         if (nativecontents & CONTENTSQ3_BODY)
7403                 supercontents |= SUPERCONTENTS_BODY;
7404         if (nativecontents & CONTENTSQ3_CORPSE)
7405                 supercontents |= SUPERCONTENTS_CORPSE;
7406         if (nativecontents & CONTENTSQ3_NODROP)
7407                 supercontents |= SUPERCONTENTS_NODROP;
7408         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
7409                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
7410         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
7411                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
7412         if (nativecontents & CONTENTSQ3_DONOTENTER)
7413                 supercontents |= SUPERCONTENTS_DONOTENTER;
7414         if (nativecontents & CONTENTSQ3_BOTCLIP)
7415                 supercontents |= SUPERCONTENTS_BOTCLIP;
7416         if (!(nativecontents & CONTENTSQ3_TRANSLUCENT))
7417                 supercontents |= SUPERCONTENTS_OPAQUE;
7418         return supercontents;
7419 }
7420
7421 static int Mod_Q3BSP_NativeContentsFromSuperContents(int supercontents)
7422 {
7423         int nativecontents = 0;
7424         if (supercontents & SUPERCONTENTS_SOLID)
7425                 nativecontents |= CONTENTSQ3_SOLID;
7426         if (supercontents & SUPERCONTENTS_WATER)
7427                 nativecontents |= CONTENTSQ3_WATER;
7428         if (supercontents & SUPERCONTENTS_SLIME)
7429                 nativecontents |= CONTENTSQ3_SLIME;
7430         if (supercontents & SUPERCONTENTS_LAVA)
7431                 nativecontents |= CONTENTSQ3_LAVA;
7432         if (supercontents & SUPERCONTENTS_BODY)
7433                 nativecontents |= CONTENTSQ3_BODY;
7434         if (supercontents & SUPERCONTENTS_CORPSE)
7435                 nativecontents |= CONTENTSQ3_CORPSE;
7436         if (supercontents & SUPERCONTENTS_NODROP)
7437                 nativecontents |= CONTENTSQ3_NODROP;
7438         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
7439                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
7440         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
7441                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
7442         if (supercontents & SUPERCONTENTS_DONOTENTER)
7443                 nativecontents |= CONTENTSQ3_DONOTENTER;
7444         if (supercontents & SUPERCONTENTS_BOTCLIP)
7445                 nativecontents |= CONTENTSQ3_BOTCLIP;
7446         if (!(supercontents & SUPERCONTENTS_OPAQUE))
7447                 nativecontents |= CONTENTSQ3_TRANSLUCENT;
7448         return nativecontents;
7449 }
7450
7451 static void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
7452 {
7453         int numleafs;
7454         while (node->plane)
7455         {
7456                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
7457                 node = node->children[1];
7458         }
7459         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
7460         if (loadmodel->brush.num_leafs < numleafs)
7461                 loadmodel->brush.num_leafs = numleafs;
7462 }
7463
7464 static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7465 {
7466         int i, j, lumps;
7467         q3dheader_t *header;
7468         float corner[3], yawradius, modelradius;
7469
7470         mod->modeldatatypestring = "Q3BSP";
7471
7472         mod->type = mod_brushq3;
7473         mod->brush.ishlbsp = false;
7474         mod->brush.isbsp2rmqe = false;
7475         mod->brush.isbsp2 = false;
7476         mod->brush.isq2bsp = false;
7477         mod->brush.isq3bsp = true;
7478         mod->brush.skymasking = true;
7479         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
7480         mod->numskins = 1;
7481
7482         header = (q3dheader_t *)buffer;
7483         if((char *) bufferend < (char *) buffer + sizeof(q3dheader_t))
7484                 Host_Error("Mod_Q3BSP_Load: %s is smaller than its header", mod->name);
7485
7486         i = LittleLong(header->version);
7487         if (i != Q3BSPVERSION && i != Q3BSPVERSION_IG && i != Q3BSPVERSION_LIVE)
7488                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
7489
7490         mod->soundfromcenter = true;
7491         mod->TraceBox = Mod_CollisionBIH_TraceBox;
7492         mod->TraceBrush = Mod_CollisionBIH_TraceBrush;
7493         mod->TraceLine = Mod_CollisionBIH_TraceLine;
7494         mod->TracePoint = Mod_CollisionBIH_TracePoint;
7495         mod->PointSuperContents = Mod_CollisionBIH_PointSuperContents;
7496         mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
7497         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
7498         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
7499         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
7500         mod->brush.GetPVS = Mod_BSP_GetPVS;
7501         mod->brush.FatPVS = Mod_BSP_FatPVS;
7502         mod->brush.BoxTouchingPVS = Mod_BSP_BoxTouchingPVS;
7503         mod->brush.BoxTouchingLeafPVS = Mod_BSP_BoxTouchingLeafPVS;
7504         mod->brush.BoxTouchingVisibleLeafs = Mod_BSP_BoxTouchingVisibleLeafs;
7505         mod->brush.FindBoxClusters = Mod_BSP_FindBoxClusters;
7506         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
7507         mod->brush.FindNonSolidLocation = Mod_BSP_FindNonSolidLocation;
7508         mod->brush.AmbientSoundLevelsForPoint = NULL;
7509         mod->brush.RoundUpToHullSize = NULL;
7510         mod->brush.PointInLeaf = Mod_BSP_PointInLeaf;
7511         mod->Draw = R_Mod_Draw;
7512         mod->DrawDepth = R_Mod_DrawDepth;
7513         mod->DrawDebug = R_Mod_DrawDebug;
7514         mod->DrawPrepass = R_Mod_DrawPrepass;
7515         mod->GetLightInfo = R_Mod_GetLightInfo;
7516         mod->CompileShadowMap = R_Mod_CompileShadowMap;
7517         mod->DrawShadowMap = R_Mod_DrawShadowMap;
7518         mod->DrawLight = R_Mod_DrawLight;
7519
7520         mod_base = (unsigned char *)header;
7521
7522         // swap all the lumps
7523         header->ident = LittleLong(header->ident);
7524         header->version = LittleLong(header->version);
7525         lumps = (header->version == Q3BSPVERSION_LIVE) ? Q3HEADER_LUMPS_LIVE : Q3HEADER_LUMPS;
7526         for (i = 0;i < lumps;i++)
7527         {
7528                 j = (header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs));
7529                 if((char *) bufferend < (char *) buffer + j)
7530                         Host_Error("Mod_Q3BSP_Load: %s has a lump that starts outside the file!", mod->name);
7531                 j += (header->lumps[i].filelen = LittleLong(header->lumps[i].filelen));
7532                 if((char *) bufferend < (char *) buffer + j)
7533                         Host_Error("Mod_Q3BSP_Load: %s has a lump that ends outside the file!", mod->name);
7534         }
7535         /*
7536          * NO, do NOT clear them!
7537          * they contain actual data referenced by other stuff.
7538          * Instead, before using the advertisements lump, check header->versio
7539          * again!
7540          * Sorry, but otherwise it breaks memory of the first lump.
7541         for (i = lumps;i < Q3HEADER_LUMPS_MAX;i++)
7542         {
7543                 header->lumps[i].fileofs = 0;
7544                 header->lumps[i].filelen = 0;
7545         }
7546         */
7547
7548         mod->brush.qw_md4sum = 0;
7549         mod->brush.qw_md4sum2 = 0;
7550         for (i = 0;i < lumps;i++)
7551         {
7552                 if (i == Q3LUMP_ENTITIES)
7553                         continue;
7554                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
7555                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
7556                         continue;
7557                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
7558
7559                 // all this checksumming can take a while, so let's send keepalives here too
7560                 CL_KeepaliveMessage(false);
7561         }
7562
7563         // allocate a texture pool if we need it
7564         if (mod->texturepool == NULL)
7565                 mod->texturepool = R_AllocTexturePool();
7566
7567         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
7568         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
7569         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
7570         if (header->version == Q3BSPVERSION_IG)
7571                 Mod_Q3BSP_LoadBrushSides_IG(&header->lumps[Q3LUMP_BRUSHSIDES]);
7572         else
7573                 Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
7574         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
7575         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
7576         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
7577         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
7578         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
7579         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
7580         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
7581         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
7582         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
7583         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
7584         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
7585         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
7586         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
7587         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
7588
7589         // the MakePortals code works fine on the q3bsp data as well
7590         if (mod_bsp_portalize.integer)
7591                 Mod_BSP_MakePortals();
7592
7593         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
7594         loadmodel->brush.supportwateralpha = true;
7595
7596         loadmodel->brush.num_leafs = 0;
7597         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
7598
7599         if (loadmodel->brush.numsubmodels)
7600                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
7601
7602         mod = loadmodel;
7603         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
7604         {
7605                 if (i > 0)
7606                 {
7607                         char name[10];
7608                         // duplicate the basic information
7609                         dpsnprintf(name, sizeof(name), "*%i", i);
7610                         mod = Mod_FindName(name, loadmodel->name);
7611                         // copy the base model to this one
7612                         *mod = *loadmodel;
7613                         // rename the clone back to its proper name
7614                         strlcpy(mod->name, name, sizeof(mod->name));
7615                         mod->brush.parentmodel = loadmodel;
7616                         // textures and memory belong to the main model
7617                         mod->texturepool = NULL;
7618                         mod->mempool = NULL;
7619                         mod->brush.GetPVS = NULL;
7620                         mod->brush.FatPVS = NULL;
7621                         mod->brush.BoxTouchingPVS = NULL;
7622                         mod->brush.BoxTouchingLeafPVS = NULL;
7623                         mod->brush.BoxTouchingVisibleLeafs = NULL;
7624                         mod->brush.FindBoxClusters = NULL;
7625                         mod->brush.LightPoint = NULL;
7626                         mod->brush.AmbientSoundLevelsForPoint = NULL;
7627                 }
7628                 mod->brush.submodel = i;
7629                 if (loadmodel->brush.submodels)
7630                         loadmodel->brush.submodels[i] = mod;
7631
7632                 // make the model surface list (used by shadowing/lighting)
7633                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
7634                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
7635                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
7636                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
7637                 mod->sortedmodelsurfaces = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
7638                 Mod_MakeSortedSurfaces(mod);
7639
7640                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
7641                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
7642                 // enlarge the bounding box to enclose all geometry of this model,
7643                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
7644                 // which can in turn mess up the farclip (as well as culling when
7645                 // outside the level - an unimportant concern)
7646
7647                 //printf("Editing model %d... BEFORE re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
7648                 for (j = 0;j < mod->nummodelsurfaces;j++)
7649                 {
7650                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
7651                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
7652                         int k;
7653                         if (!surface->num_vertices)
7654                                 continue;
7655                         for (k = 0;k < surface->num_vertices;k++, v += 3)
7656                         {
7657                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
7658                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
7659                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
7660                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
7661                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
7662                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
7663                         }
7664                 }
7665                 //printf("Editing model %d... AFTER re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
7666                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
7667                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
7668                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
7669                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
7670                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
7671                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
7672                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
7673                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
7674                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
7675                 mod->yawmins[2] = mod->normalmins[2];
7676                 mod->yawmaxs[2] = mod->normalmaxs[2];
7677                 mod->radius = modelradius;
7678                 mod->radius2 = modelradius * modelradius;
7679
7680                 // this gets altered below if sky or water is used
7681                 mod->DrawSky = NULL;
7682                 mod->DrawAddWaterPlanes = NULL;
7683
7684                 for (j = 0;j < mod->nummodelsurfaces;j++)
7685                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
7686                                 break;
7687                 if (j < mod->nummodelsurfaces)
7688                         mod->DrawSky = R_Mod_DrawSky;
7689
7690                 for (j = 0;j < mod->nummodelsurfaces;j++)
7691                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
7692                                 break;
7693                 if (j < mod->nummodelsurfaces)
7694                         mod->DrawAddWaterPlanes = R_Mod_DrawAddWaterPlanes;
7695
7696                 Mod_MakeCollisionBIH(mod, false, &mod->collision_bih);
7697                 Mod_MakeCollisionBIH(mod, true, &mod->render_bih);
7698
7699                 // generate VBOs and other shared data before cloning submodels
7700                 if (i == 0)
7701                         Mod_BuildVBOs();
7702         }
7703
7704         if (mod_q3bsp_sRGBlightmaps.integer)
7705         {
7706                 if (vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
7707                 {
7708                         // actually we do in sRGB fallback with sRGB lightmaps: Image_sRGBFloatFromLinear_Lightmap(Image_LinearFloatFromsRGBFloat(x))
7709                         // neutral point is at Image_sRGBFloatFromLinearFloat(0.5)
7710                         // so we need to map Image_sRGBFloatFromLinearFloat(0.5) to 0.5
7711                         // factor is 0.5 / Image_sRGBFloatFromLinearFloat(0.5)
7712                         //loadmodel->lightmapscale *= 0.679942f; // fixes neutral level
7713                 }
7714                 else // if this is NOT set, regular rendering looks right by this requirement anyway
7715                 {
7716                         /*
7717                         // we want color 1 to do the same as without sRGB
7718                         // so, we want to map 1 to Image_LinearFloatFromsRGBFloat(2) instead of to 2
7719                         loadmodel->lightmapscale *= 2.476923f; // fixes max level
7720                         */
7721
7722                         // neutral level 0.5 gets uploaded as sRGB and becomes Image_LinearFloatFromsRGBFloat(0.5)
7723                         // we need to undo that
7724                         loadmodel->lightmapscale *= 2.336f; // fixes neutral level
7725                 }
7726         }
7727
7728         Con_DPrintf("Stats for q3bsp model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
7729 }
7730
7731 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7732 {
7733         int i = LittleLong(((int *)buffer)[1]);
7734         if (i == Q3BSPVERSION || i == Q3BSPVERSION_IG || i == Q3BSPVERSION_LIVE)
7735                 Mod_Q3BSP_Load(mod,buffer, bufferend);
7736         else if (i == Q2BSPVERSION)
7737                 Mod_Q2BSP_Load(mod,buffer, bufferend);
7738         else
7739                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
7740 }
7741
7742 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7743 {
7744         Host_Error("Mod_MAP_Load: not yet implemented");
7745 }
7746
7747 typedef struct objvertex_s
7748 {
7749         int nextindex;
7750         int submodelindex;
7751         int textureindex;
7752         float v[3];
7753         float vt[2];
7754         float vn[3];
7755 }
7756 objvertex_t;
7757
7758 static unsigned char nobsp_pvs[1] = {1};
7759
7760 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
7761 {
7762         const char *textbase = (char *)buffer, *text = textbase;
7763         char *s;
7764         char *argv[512];
7765         char line[1024];
7766         char materialname[MAX_QPATH];
7767         int i, j, l, numvertices, firstvertex, firsttriangle, elementindex, vertexindex, surfacevertices, surfacetriangles, surfaceelements, submodelindex = 0;
7768         int index1, index2, index3;
7769         objvertex_t vfirst, vprev, vcurrent;
7770         int argc;
7771         int linelen;
7772         int numtriangles = 0;
7773         int maxtriangles = 0;
7774         objvertex_t *vertices = NULL;
7775         int linenumber = 0;
7776         int maxtextures = 0, numtextures = 0, textureindex = 0;
7777         int maxv = 0, numv = 1;
7778         int maxvt = 0, numvt = 1;
7779         int maxvn = 0, numvn = 1;
7780         char *texturenames = NULL;
7781         float dist, modelradius, modelyawradius, yawradius;
7782         float *obj_v = NULL;
7783         float *obj_vt = NULL;
7784         float *obj_vn = NULL;
7785         float mins[3];
7786         float maxs[3];
7787         float corner[3];
7788         objvertex_t *thisvertex = NULL;
7789         int vertexhashindex;
7790         int *vertexhashtable = NULL;
7791         objvertex_t *vertexhashdata = NULL;
7792         objvertex_t *vdata = NULL;
7793         int vertexhashsize = 0;
7794         int vertexhashcount = 0;
7795         skinfile_t *skinfiles = NULL;
7796         unsigned char *data = NULL;
7797         int *submodelfirstsurface;
7798         msurface_t *tempsurface;
7799         msurface_t *tempsurfaces;
7800
7801         memset(&vfirst, 0, sizeof(vfirst));
7802         memset(&vprev, 0, sizeof(vprev));
7803         memset(&vcurrent, 0, sizeof(vcurrent));
7804
7805         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
7806
7807         loadmodel->modeldatatypestring = "OBJ";
7808
7809         loadmodel->type = mod_obj;
7810         loadmodel->soundfromcenter = true;
7811         loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
7812         loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
7813         loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
7814         loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
7815         loadmodel->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
7816         loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
7817         loadmodel->brush.TraceLineOfSight = NULL;
7818         loadmodel->brush.SuperContentsFromNativeContents = NULL;
7819         loadmodel->brush.NativeContentsFromSuperContents = NULL;
7820         loadmodel->brush.GetPVS = NULL;
7821         loadmodel->brush.FatPVS = NULL;
7822         loadmodel->brush.BoxTouchingPVS = NULL;
7823         loadmodel->brush.BoxTouchingLeafPVS = NULL;
7824         loadmodel->brush.BoxTouchingVisibleLeafs = NULL;
7825         loadmodel->brush.FindBoxClusters = NULL;
7826         loadmodel->brush.LightPoint = NULL;
7827         loadmodel->brush.FindNonSolidLocation = NULL;
7828         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
7829         loadmodel->brush.RoundUpToHullSize = NULL;
7830         loadmodel->brush.PointInLeaf = NULL;
7831         loadmodel->Draw = R_Mod_Draw;
7832         loadmodel->DrawDepth = R_Mod_DrawDepth;
7833         loadmodel->DrawDebug = R_Mod_DrawDebug;
7834         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
7835         loadmodel->GetLightInfo = R_Mod_GetLightInfo;
7836         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
7837         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
7838         loadmodel->DrawLight = R_Mod_DrawLight;
7839
7840         skinfiles = Mod_LoadSkinFiles();
7841         if (loadmodel->numskins < 1)
7842                 loadmodel->numskins = 1;
7843
7844         // make skinscenes for the skins (no groups)
7845         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
7846         for (i = 0;i < loadmodel->numskins;i++)
7847         {
7848                 loadmodel->skinscenes[i].firstframe = i;
7849                 loadmodel->skinscenes[i].framecount = 1;
7850                 loadmodel->skinscenes[i].loop = true;
7851                 loadmodel->skinscenes[i].framerate = 10;
7852         }
7853
7854         VectorClear(mins);
7855         VectorClear(maxs);
7856
7857         // we always have model 0, i.e. the first "submodel"
7858         loadmodel->brush.numsubmodels = 1;
7859
7860         // parse the OBJ text now
7861         for(;;)
7862         {
7863                 static char emptyarg[1] = "";
7864                 if (!*text)
7865                         break;
7866                 linenumber++;
7867                 linelen = 0;
7868                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
7869                         line[linelen] = text[linelen];
7870                 line[linelen] = 0;
7871                 for (argc = 0;argc < 4;argc++)
7872                         argv[argc] = emptyarg;
7873                 argc = 0;
7874                 s = line;
7875                 while (*s == ' ' || *s == '\t')
7876                         s++;
7877                 while (*s)
7878                 {
7879                         argv[argc++] = s;
7880                         while (*s > ' ')
7881                                 s++;
7882                         if (!*s)
7883                                 break;
7884                         *s++ = 0;
7885                         while (*s == ' ' || *s == '\t')
7886                                 s++;
7887                 }
7888                 text += linelen;
7889                 if (*text == '\r')
7890                         text++;
7891                 if (*text == '\n')
7892                         text++;
7893                 if (!argc)
7894                         continue;
7895                 if (argv[0][0] == '#')
7896                         continue;
7897                 if (!strcmp(argv[0], "v"))
7898                 {
7899                         if (maxv <= numv)
7900                         {
7901                                 maxv = max(maxv * 2, 1024);
7902                                 obj_v = (float *)Mem_Realloc(tempmempool, obj_v, maxv * sizeof(float[3]));
7903                         }
7904                         if(mod_obj_orientation.integer)
7905                         {
7906                                 obj_v[numv*3+0] = atof(argv[1]);
7907                                 obj_v[numv*3+2] = atof(argv[2]);
7908                                 obj_v[numv*3+1] = atof(argv[3]);
7909                         }
7910                         else
7911                         {
7912                                 obj_v[numv*3+0] = atof(argv[1]);
7913                                 obj_v[numv*3+1] = atof(argv[2]);
7914                                 obj_v[numv*3+2] = atof(argv[3]);
7915                         }
7916                         numv++;
7917                 }
7918                 else if (!strcmp(argv[0], "vt"))
7919                 {
7920                         if (maxvt <= numvt)
7921                         {
7922                                 maxvt = max(maxvt * 2, 1024);
7923                                 obj_vt = (float *)Mem_Realloc(tempmempool, obj_vt, maxvt * sizeof(float[2]));
7924                         }
7925                         obj_vt[numvt*2+0] = atof(argv[1]);
7926                         obj_vt[numvt*2+1] = 1-atof(argv[2]);
7927                         numvt++;
7928                 }
7929                 else if (!strcmp(argv[0], "vn"))
7930                 {
7931                         if (maxvn <= numvn)
7932                         {
7933                                 maxvn = max(maxvn * 2, 1024);
7934                                 obj_vn = (float *)Mem_Realloc(tempmempool, obj_vn, maxvn * sizeof(float[3]));
7935                         }
7936                         if(mod_obj_orientation.integer)
7937                         {
7938                                 obj_vn[numvn*3+0] = atof(argv[1]);
7939                                 obj_vn[numvn*3+2] = atof(argv[2]);
7940                                 obj_vn[numvn*3+1] = atof(argv[3]);
7941                         }
7942                         else
7943                         {
7944                                 obj_vn[numvn*3+0] = atof(argv[1]);
7945                                 obj_vn[numvn*3+1] = atof(argv[2]);
7946                                 obj_vn[numvn*3+2] = atof(argv[3]);
7947                         }
7948                         numvn++;
7949                 }
7950                 else if (!strcmp(argv[0], "f"))
7951                 {
7952                         if (!numtextures)
7953                         {
7954                                 if (maxtextures <= numtextures)
7955                                 {
7956                                         maxtextures = max(maxtextures * 2, 256);
7957                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
7958                                 }
7959                                 textureindex = numtextures++;
7960                                 strlcpy(texturenames + textureindex*MAX_QPATH, loadmodel->name, MAX_QPATH);
7961                         }
7962                         for (j = 1;j < argc;j++)
7963                         {
7964                                 index1 = atoi(argv[j]);
7965                                 while(argv[j][0] && argv[j][0] != '/')
7966                                         argv[j]++;
7967                                 if (argv[j][0])
7968                                         argv[j]++;
7969                                 index2 = atoi(argv[j]);
7970                                 while(argv[j][0] && argv[j][0] != '/')
7971                                         argv[j]++;
7972                                 if (argv[j][0])
7973                                         argv[j]++;
7974                                 index3 = atoi(argv[j]);
7975                                 // negative refers to a recent vertex
7976                                 // zero means not specified
7977                                 // positive means an absolute vertex index
7978                                 if (index1 < 0)
7979                                         index1 = numv - index1;
7980                                 if (index2 < 0)
7981                                         index2 = numvt - index2;
7982                                 if (index3 < 0)
7983                                         index3 = numvn - index3;
7984                                 vcurrent.nextindex = -1;
7985                                 vcurrent.textureindex = textureindex;
7986                                 vcurrent.submodelindex = submodelindex;
7987                                 if (obj_v && index1 >= 0 && index1 < numv)
7988                                         VectorCopy(obj_v + 3*index1, vcurrent.v);
7989                                 if (obj_vt && index2 >= 0 && index2 < numvt)
7990                                         Vector2Copy(obj_vt + 2*index2, vcurrent.vt);
7991                                 if (obj_vn && index3 >= 0 && index3 < numvn)
7992                                         VectorCopy(obj_vn + 3*index3, vcurrent.vn);
7993                                 if (numtriangles == 0)
7994                                 {
7995                                         VectorCopy(vcurrent.v, mins);
7996                                         VectorCopy(vcurrent.v, maxs);
7997                                 }
7998                                 else
7999                                 {
8000                                         mins[0] = min(mins[0], vcurrent.v[0]);
8001                                         mins[1] = min(mins[1], vcurrent.v[1]);
8002                                         mins[2] = min(mins[2], vcurrent.v[2]);
8003                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
8004                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
8005                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
8006                                 }
8007                                 if (j == 1)
8008                                         vfirst = vcurrent;
8009                                 else if (j >= 3)
8010                                 {
8011                                         if (maxtriangles <= numtriangles)
8012                                         {
8013                                                 maxtriangles = max(maxtriangles * 2, 32768);
8014                                                 vertices = (objvertex_t*)Mem_Realloc(loadmodel->mempool, vertices, maxtriangles * sizeof(objvertex_t[3]));
8015                                         }
8016                                         if(mod_obj_orientation.integer)
8017                                         {
8018                                                 vertices[numtriangles*3+0] = vfirst;
8019                                                 vertices[numtriangles*3+1] = vprev;
8020                                                 vertices[numtriangles*3+2] = vcurrent;
8021                                         }
8022                                         else
8023                                         {
8024                                                 vertices[numtriangles*3+0] = vfirst;
8025                                                 vertices[numtriangles*3+2] = vprev;
8026                                                 vertices[numtriangles*3+1] = vcurrent;
8027                                         }
8028                                         numtriangles++;
8029                                 }
8030                                 vprev = vcurrent;
8031                         }
8032                 }
8033                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
8034                 {
8035                         submodelindex = atof(argv[1]);
8036                         loadmodel->brush.numsubmodels = max(submodelindex + 1, loadmodel->brush.numsubmodels);
8037                 }
8038                 else if (!strcmp(argv[0], "usemtl"))
8039                 {
8040                         for (i = 0;i < numtextures;i++)
8041                                 if (!strcmp(texturenames+i*MAX_QPATH, argv[1]))
8042                                         break;
8043                         if (i < numtextures)
8044                                 textureindex = i;
8045                         else
8046                         {
8047                                 if (maxtextures <= numtextures)
8048                                 {
8049                                         maxtextures = max(maxtextures * 2, 256);
8050                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
8051                                 }
8052                                 textureindex = numtextures++;
8053                                 strlcpy(texturenames + textureindex*MAX_QPATH, argv[1], MAX_QPATH);
8054                         }
8055                 }
8056         }
8057
8058         // now that we have the OBJ data loaded as-is, we can convert it
8059
8060         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
8061         VectorCopy(mins, loadmodel->normalmins);
8062         VectorCopy(maxs, loadmodel->normalmaxs);
8063         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
8064         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
8065         modelyawradius = dist*dist+modelyawradius*modelyawradius;
8066         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
8067         modelradius = modelyawradius + modelradius * modelradius;
8068         modelyawradius = sqrt(modelyawradius);
8069         modelradius = sqrt(modelradius);
8070         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
8071         loadmodel->yawmins[2] = loadmodel->normalmins[2];
8072         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
8073         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
8074         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
8075         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
8076         loadmodel->radius = modelradius;
8077         loadmodel->radius2 = modelradius * modelradius;
8078
8079         // allocate storage for triangles
8080         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, numtriangles * sizeof(int[3]));
8081         // allocate vertex hash structures to build an optimal vertex subset
8082         vertexhashsize = numtriangles*2;
8083         vertexhashtable = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int) * vertexhashsize);
8084         memset(vertexhashtable, 0xFF, sizeof(int) * vertexhashsize);
8085         vertexhashdata = (objvertex_t *)Mem_Alloc(loadmodel->mempool, sizeof(*vertexhashdata) * numtriangles*3);
8086         vertexhashcount = 0;
8087
8088         // gather surface stats for assigning vertex/triangle ranges
8089         firstvertex = 0;
8090         firsttriangle = 0;
8091         elementindex = 0;
8092         loadmodel->num_surfaces = 0;
8093         // allocate storage for the worst case number of surfaces, later we resize
8094         tempsurfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, numtextures * loadmodel->brush.numsubmodels * sizeof(msurface_t));
8095         submodelfirstsurface = (int *)Mem_Alloc(loadmodel->mempool, (loadmodel->brush.numsubmodels+1) * sizeof(int));
8096         tempsurface = tempsurfaces;
8097         for (submodelindex = 0;submodelindex < loadmodel->brush.numsubmodels;submodelindex++)
8098         {
8099                 submodelfirstsurface[submodelindex] = loadmodel->num_surfaces;
8100                 for (textureindex = 0;textureindex < numtextures;textureindex++)
8101                 {
8102                         for (vertexindex = 0;vertexindex < numtriangles*3;vertexindex++)
8103                         {
8104                                 thisvertex = vertices + vertexindex;
8105                                 if (thisvertex->submodelindex == submodelindex && thisvertex->textureindex == textureindex)
8106                                         break;
8107                         }
8108                         // skip the surface creation if there are no triangles for it
8109                         if (vertexindex == numtriangles*3)
8110                                 continue;
8111                         // create a surface for these vertices
8112                         surfacevertices = 0;
8113                         surfaceelements = 0;
8114                         // we hack in a texture index in the surface to be fixed up later...
8115                         tempsurface->texture = (texture_t *)((size_t)textureindex);
8116                         // calculate bounds as we go
8117                         VectorCopy(thisvertex->v, tempsurface->mins);
8118                         VectorCopy(thisvertex->v, tempsurface->maxs);
8119                         for (;vertexindex < numtriangles*3;vertexindex++)
8120                         {
8121                                 thisvertex = vertices + vertexindex;
8122                                 if (thisvertex->submodelindex != submodelindex)
8123                                         continue;
8124                                 if (thisvertex->textureindex != textureindex)
8125                                         continue;
8126                                 // add vertex to surface bounds
8127                                 tempsurface->mins[0] = min(tempsurface->mins[0], thisvertex->v[0]);
8128                                 tempsurface->mins[1] = min(tempsurface->mins[1], thisvertex->v[1]);
8129                                 tempsurface->mins[2] = min(tempsurface->mins[2], thisvertex->v[2]);
8130                                 tempsurface->maxs[0] = max(tempsurface->maxs[0], thisvertex->v[0]);
8131                                 tempsurface->maxs[1] = max(tempsurface->maxs[1], thisvertex->v[1]);
8132                                 tempsurface->maxs[2] = max(tempsurface->maxs[2], thisvertex->v[2]);
8133                                 // add the vertex if it is not found in the merged set, and
8134                                 // get its index (triangle element) for the surface
8135                                 vertexhashindex = (unsigned int)(thisvertex->v[0] * 3571 + thisvertex->v[0] * 1777 + thisvertex->v[0] * 457) % (unsigned int)vertexhashsize;
8136                                 for (i = vertexhashtable[vertexhashindex];i >= 0;i = vertexhashdata[i].nextindex)
8137                                 {
8138                                         vdata = vertexhashdata + i;
8139                                         if (vdata->submodelindex == thisvertex->submodelindex && vdata->textureindex == thisvertex->textureindex && VectorCompare(thisvertex->v, vdata->v) && VectorCompare(thisvertex->vn, vdata->vn) && Vector2Compare(thisvertex->vt, vdata->vt))
8140                                                 break;
8141                                 }
8142                                 if (i < 0)
8143                                 {
8144                                         i = vertexhashcount++;
8145                                         vdata = vertexhashdata + i;
8146                                         *vdata = *thisvertex;
8147                                         vdata->nextindex = vertexhashtable[vertexhashindex];
8148                                         vertexhashtable[vertexhashindex] = i;
8149                                         surfacevertices++;
8150                                 }
8151                                 loadmodel->surfmesh.data_element3i[elementindex++] = i;
8152                                 surfaceelements++;
8153                         }
8154                         surfacetriangles = surfaceelements / 3;
8155                         tempsurface->num_vertices = surfacevertices;
8156                         tempsurface->num_triangles = surfacetriangles;
8157                         tempsurface->num_firstvertex = firstvertex;
8158                         tempsurface->num_firsttriangle = firsttriangle;
8159                         firstvertex += tempsurface->num_vertices;
8160                         firsttriangle += tempsurface->num_triangles;
8161                         tempsurface++;
8162                         loadmodel->num_surfaces++;
8163                 }
8164         }
8165         submodelfirstsurface[submodelindex] = loadmodel->num_surfaces;
8166         numvertices = firstvertex;
8167         loadmodel->data_surfaces = (msurface_t *)Mem_Realloc(loadmodel->mempool, tempsurfaces, loadmodel->num_surfaces * sizeof(msurface_t));
8168         tempsurfaces = NULL;
8169
8170         // allocate storage for final mesh data
8171         loadmodel->num_textures = numtextures * loadmodel->numskins;
8172         loadmodel->num_texturesperskin = numtextures;
8173         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + numtriangles * sizeof(int[3]) + (numvertices <= 65536 ? numtriangles * sizeof(unsigned short[3]) : 0) + numvertices * sizeof(float[14]) + loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
8174         loadmodel->brush.submodels = (dp_model_t **)data;data += loadmodel->brush.numsubmodels * sizeof(dp_model_t *);
8175         loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
8176         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
8177         loadmodel->surfmesh.num_vertices = numvertices;
8178         loadmodel->surfmesh.num_triangles = numtriangles;
8179         loadmodel->surfmesh.data_vertex3f = (float *)data;data += numvertices * sizeof(float[3]);
8180         loadmodel->surfmesh.data_svector3f = (float *)data;data += numvertices * sizeof(float[3]);
8181         loadmodel->surfmesh.data_tvector3f = (float *)data;data += numvertices * sizeof(float[3]);
8182         loadmodel->surfmesh.data_normal3f = (float *)data;data += numvertices * sizeof(float[3]);
8183         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += numvertices * sizeof(float[2]);
8184
8185         if (loadmodel->surfmesh.num_vertices <= 65536) {
8186                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
8187         }
8188
8189         for (j = 0;j < loadmodel->surfmesh.num_vertices;j++)
8190         {
8191                 VectorCopy(vertexhashdata[j].v, loadmodel->surfmesh.data_vertex3f + 3*j);
8192                 VectorCopy(vertexhashdata[j].vn, loadmodel->surfmesh.data_normal3f + 3*j);
8193                 Vector2Copy(vertexhashdata[j].vt, loadmodel->surfmesh.data_texcoordtexture2f + 2*j);
8194         }
8195
8196         // load the textures
8197         for (textureindex = 0;textureindex < numtextures;textureindex++)
8198                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + textureindex, skinfiles, texturenames + textureindex*MAX_QPATH, texturenames + textureindex*MAX_QPATH);
8199         Mod_FreeSkinFiles(skinfiles);
8200
8201         // set the surface textures to their real values now that we loaded them...
8202         for (i = 0;i < loadmodel->num_surfaces;i++)
8203                 loadmodel->data_surfaces[i].texture = loadmodel->data_textures + (size_t)loadmodel->data_surfaces[i].texture;
8204
8205         // free data
8206         Mem_Free(vertices);
8207         Mem_Free(texturenames);
8208         Mem_Free(obj_v);
8209         Mem_Free(obj_vt);
8210         Mem_Free(obj_vn);
8211         Mem_Free(vertexhashtable);
8212         Mem_Free(vertexhashdata);
8213
8214         // compute all the mesh information that was not loaded from the file
8215         if (loadmodel->surfmesh.data_element3s)
8216                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
8217                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
8218         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
8219         // generate normals if the file did not have them
8220         if (!VectorLength2(loadmodel->surfmesh.data_normal3f))
8221                 Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, r_smoothnormals_areaweighting.integer != 0);
8222         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, r_smoothnormals_areaweighting.integer != 0);
8223
8224         // if this is a worldmodel and has no BSP tree, create a fake one for the purpose
8225         loadmodel->brush.num_visleafs = 1;
8226         loadmodel->brush.num_leafs = 1;
8227         loadmodel->brush.num_nodes = 0;
8228         loadmodel->brush.num_leafsurfaces = loadmodel->num_surfaces;
8229         loadmodel->brush.data_leafs = (mleaf_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafs * sizeof(mleaf_t));
8230         loadmodel->brush.data_nodes = (mnode_t *)loadmodel->brush.data_leafs;
8231         loadmodel->brush.num_pvsclusters = 1;
8232         loadmodel->brush.num_pvsclusterbytes = 1;
8233         loadmodel->brush.data_pvsclusters = nobsp_pvs;
8234         //if (loadmodel->num_nodes) loadmodel->data_nodes = (mnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_nodes * sizeof(mnode_t));
8235         //loadmodel->data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->num_leafsurfaces * sizeof(int));
8236         loadmodel->brush.data_leafsurfaces = loadmodel->sortedmodelsurfaces;
8237         VectorCopy(loadmodel->normalmins, loadmodel->brush.data_leafs->mins);
8238         VectorCopy(loadmodel->normalmaxs, loadmodel->brush.data_leafs->maxs);
8239         loadmodel->brush.data_leafs->combinedsupercontents = 0; // FIXME?
8240         loadmodel->brush.data_leafs->clusterindex = 0;
8241         loadmodel->brush.data_leafs->areaindex = 0;
8242         loadmodel->brush.data_leafs->numleafsurfaces = loadmodel->brush.num_leafsurfaces;
8243         loadmodel->brush.data_leafs->firstleafsurface = loadmodel->brush.data_leafsurfaces;
8244         loadmodel->brush.data_leafs->numleafbrushes = 0;
8245         loadmodel->brush.data_leafs->firstleafbrush = NULL;
8246         loadmodel->brush.supportwateralpha = true;
8247
8248         if (loadmodel->brush.numsubmodels)
8249                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
8250
8251         mod = loadmodel;
8252         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
8253         {
8254                 if (i > 0)
8255                 {
8256                         char name[10];
8257                         // duplicate the basic information
8258                         dpsnprintf(name, sizeof(name), "*%i", i);
8259                         mod = Mod_FindName(name, loadmodel->name);
8260                         // copy the base model to this one
8261                         *mod = *loadmodel;
8262                         // rename the clone back to its proper name
8263                         strlcpy(mod->name, name, sizeof(mod->name));
8264                         mod->brush.parentmodel = loadmodel;
8265                         // textures and memory belong to the main model
8266                         mod->texturepool = NULL;
8267                         mod->mempool = NULL;
8268                         mod->brush.GetPVS = NULL;
8269                         mod->brush.FatPVS = NULL;
8270                         mod->brush.BoxTouchingPVS = NULL;
8271                         mod->brush.BoxTouchingLeafPVS = NULL;
8272                         mod->brush.BoxTouchingVisibleLeafs = NULL;
8273                         mod->brush.FindBoxClusters = NULL;
8274                         mod->brush.LightPoint = NULL;
8275                         mod->brush.AmbientSoundLevelsForPoint = NULL;
8276                 }
8277                 mod->brush.submodel = i;
8278                 if (loadmodel->brush.submodels)
8279                         loadmodel->brush.submodels[i] = mod;
8280
8281                 // make the model surface list (used by shadowing/lighting)
8282                 mod->firstmodelsurface = submodelfirstsurface[i];
8283                 mod->nummodelsurfaces = submodelfirstsurface[i+1] - submodelfirstsurface[i];
8284                 mod->firstmodelbrush = 0;
8285                 mod->nummodelbrushes = 0;
8286                 mod->sortedmodelsurfaces = loadmodel->sortedmodelsurfaces + mod->firstmodelsurface;
8287                 Mod_MakeSortedSurfaces(mod);
8288
8289                 VectorClear(mod->normalmins);
8290                 VectorClear(mod->normalmaxs);
8291                 l = false;
8292                 for (j = 0;j < mod->nummodelsurfaces;j++)
8293                 {
8294                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
8295                         const float *v3f = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
8296                         int k;
8297                         if (!surface->num_vertices)
8298                                 continue;
8299                         if (!l)
8300                         {
8301                                 l = true;
8302                                 VectorCopy(v3f, mod->normalmins);
8303                                 VectorCopy(v3f, mod->normalmaxs);
8304                         }
8305                         for (k = 0;k < surface->num_vertices;k++, v3f += 3)
8306                         {
8307                                 mod->normalmins[0] = min(mod->normalmins[0], v3f[0]);
8308                                 mod->normalmins[1] = min(mod->normalmins[1], v3f[1]);
8309                                 mod->normalmins[2] = min(mod->normalmins[2], v3f[2]);
8310                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v3f[0]);
8311                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v3f[1]);
8312                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v3f[2]);
8313                         }
8314                 }
8315                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
8316                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
8317                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
8318                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
8319                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
8320                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
8321                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
8322                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
8323                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
8324                 mod->yawmins[2] = mod->normalmins[2];
8325                 mod->yawmaxs[2] = mod->normalmaxs[2];
8326                 mod->radius = modelradius;
8327                 mod->radius2 = modelradius * modelradius;
8328
8329                 // this gets altered below if sky or water is used
8330                 mod->DrawSky = NULL;
8331                 mod->DrawAddWaterPlanes = NULL;
8332
8333                 for (j = 0;j < mod->nummodelsurfaces;j++)
8334                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
8335                                 break;
8336                 if (j < mod->nummodelsurfaces)
8337                         mod->DrawSky = R_Mod_DrawSky;
8338
8339                 for (j = 0;j < mod->nummodelsurfaces;j++)
8340                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
8341                                 break;
8342                 if (j < mod->nummodelsurfaces)
8343                         mod->DrawAddWaterPlanes = R_Mod_DrawAddWaterPlanes;
8344
8345                 Mod_MakeCollisionBIH(mod, true, &mod->collision_bih);
8346                 mod->render_bih = mod->collision_bih;
8347
8348                 // generate VBOs and other shared data before cloning submodels
8349                 if (i == 0)
8350                         Mod_BuildVBOs();
8351         }
8352         mod = loadmodel;
8353         Mem_Free(submodelfirstsurface);
8354
8355         Con_DPrintf("Stats for obj model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
8356 }