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_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 = {0, "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 = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  32 cvar_t r_nosurftextures = {0, "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 = {0, "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 = {0, "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 = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  36 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  37 cvar_t r_subdivisions_collision_tolerance = {0, "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 = {0, "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 = {0, "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 = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  41 cvar_t r_trippy = {0, "r_trippy", "0", "easter egg"};
  42 cvar_t mod_noshader_default_offsetmapping = {CVAR_SAVE, "mod_noshader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are not using q3 shader files"};
  43 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  44 cvar_t mod_q3bsp_curves_collisions_stride = {0, "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)"};
  45 cvar_t mod_q3bsp_curves_stride = {0, "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)"};
  46 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  47 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  48 cvar_t mod_q3bsp_lightmapmergepower = {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, ..."};
  49 cvar_t mod_q3bsp_nolightmaps = {CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
  50 cvar_t mod_q3bsp_tracelineofsight_brushes = {0, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
  51 cvar_t mod_q3bsp_sRGBlightmaps = {0, "mod_q3bsp_sRGBlightmaps", "0", "treat lightmaps from Q3 maps as sRGB when vid_sRGB is active"};
  52 cvar_t mod_q3shader_default_offsetmapping = {CVAR_SAVE, "mod_q3shader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are using q3 shader files"};
  53 cvar_t mod_q3shader_default_offsetmapping_scale = {CVAR_SAVE, "mod_q3shader_default_offsetmapping_scale", "1", "default scale used for offsetmapping"};
  54 cvar_t mod_q3shader_default_offsetmapping_bias = {CVAR_SAVE, "mod_q3shader_default_offsetmapping_bias", "0", "default bias used for offsetmapping"};
  55 cvar_t mod_q3shader_default_polygonfactor = {0, "mod_q3shader_default_polygonfactor", "0", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
  56 cvar_t mod_q3shader_default_polygonoffset = {0, "mod_q3shader_default_polygonoffset", "-2", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
  57 cvar_t mod_q3shader_force_addalpha = {0, "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"};
  58 cvar_t mod_q1bsp_polygoncollisions = {0, "mod_q1bsp_polygoncollisions", "0", "disables use of precomputed cliphulls and instead collides with polygons (uses Bounding Interval Hierarchy optimizations)"};
  59 cvar_t mod_collision_bih = {0, "mod_collision_bih", "1", "enables use of generated Bounding Interval Hierarchy tree instead of compiled bsp tree in collision code"};
  60 cvar_t mod_recalculatenodeboxes = {0, "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"};
  61 extern cvar_t vid_sRGB;
  62 extern cvar_t vid_sRGB_fallback;
  63
  64 static texture_t mod_q1bsp_texture_solid;
  65 static texture_t mod_q1bsp_texture_sky;
  66 static texture_t mod_q1bsp_texture_lava;
  67 static texture_t mod_q1bsp_texture_slime;
  68 static texture_t mod_q1bsp_texture_water;
  69
  70 void Mod_BrushInit(void)
  71 {
  72 //      Cvar_RegisterVariable(&r_subdivide_size);
  73         Cvar_RegisterVariable(&mod_bsp_portalize);
  74         Cvar_RegisterVariable(&r_novis);
  75         Cvar_RegisterVariable(&r_nosurftextures);
  76         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  77         Cvar_RegisterVariable(&r_subdivisions_mintess);
  78         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  79         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  80         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  81         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  82         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  83         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  84         Cvar_RegisterVariable(&r_trippy);
  85         Cvar_RegisterVariable(&mod_noshader_default_offsetmapping);
  86         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  87         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
  88         Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
  89         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  90         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  91         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  92         Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
  93         Cvar_RegisterVariable(&mod_q3bsp_sRGBlightmaps);
  94         Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
  95         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping);
  96         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_scale);
  97         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_bias);
  98         Cvar_RegisterVariable(&mod_q3shader_default_polygonfactor);
  99         Cvar_RegisterVariable(&mod_q3shader_default_polygonoffset);
 100         Cvar_RegisterVariable(&mod_q3shader_force_addalpha);
 101         Cvar_RegisterVariable(&mod_q1bsp_polygoncollisions);
 102         Cvar_RegisterVariable(&mod_collision_bih);
 103         Cvar_RegisterVariable(&mod_recalculatenodeboxes);
 104
 105         // these games were made for older DP engines and are no longer
 106         // maintained; use this hack to show their textures properly
 107         if(gamemode == GAME_NEXUIZ)
 108                 Cvar_SetQuick(&mod_q3shader_force_addalpha, "1");
 109
 110         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
 111         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
 112         mod_q1bsp_texture_solid.surfaceflags = 0;
 113         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
 114
 115         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
 116         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
 117         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
 118         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 119
 120         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
 121         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
 122         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 123         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 124
 125         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
 126         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
 127         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 128         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
 129
 130         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
 131         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
 132         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 133         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 134 }
 135
 136 static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 137 {
 138         mnode_t *node;
 139
 140         if (model == NULL)
 141                 return NULL;
 142
 143         // LordHavoc: modified to start at first clip node,
 144         // in other words: first node of the (sub)model
 145         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 146         while (node->plane)
 147                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 148
 149         return (mleaf_t *)node;
 150 }
 151
 152 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 153 {
 154         int i;
 155         mleaf_t *leaf;
 156         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 157         if (leaf)
 158         {
 159                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 160                 if (i)
 161                 {
 162                         memcpy(out, leaf->ambient_sound_level, i);
 163                         out += i;
 164                         outsize -= i;
 165                 }
 166         }
 167         if (outsize)
 168                 memset(out, 0, outsize);
 169 }
 170
 171 static int Mod_Q1BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 172 {
 173         int numclusters = 0;
 174         int nodestackindex = 0;
 175         mnode_t *node, *nodestack[1024];
 176         if (!model->brush.num_pvsclusters)
 177                 return -1;
 178         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 179         for (;;)
 180         {
 181 #if 1
 182                 if (node->plane)
 183                 {
 184                         // node - recurse down the BSP tree
 185                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 186                         if (sides < 3)
 187                         {
 188                                 if (sides == 0)
 189                                         return -1; // ERROR: NAN bounding box!
 190                                 // box is on one side of plane, take that path
 191                                 node = node->children[sides-1];
 192                         }
 193                         else
 194                         {
 195                                 // box crosses plane, take one path and remember the other
 196                                 if (nodestackindex < 1024)
 197                                         nodestack[nodestackindex++] = node->children[0];
 198                                 node = node->children[1];
 199                         }
 200                         continue;
 201                 }
 202                 else
 203                 {
 204                         // leaf - add clusterindex to list
 205                         if (numclusters < maxclusters)
 206                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 207                         numclusters++;
 208                 }
 209 #else
 210                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 211                 {
 212                         if (node->plane)
 213                         {
 214                                 if (nodestackindex < 1024)
 215                                         nodestack[nodestackindex++] = node->children[0];
 216                                 node = node->children[1];
 217                                 continue;
 218                         }
 219                         else
 220                         {
 221                                 // leaf - add clusterindex to list
 222                                 if (numclusters < maxclusters)
 223                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 224                                 numclusters++;
 225                         }
 226                 }
 227 #endif
 228                 // try another path we didn't take earlier
 229                 if (nodestackindex == 0)
 230                         break;
 231                 node = nodestack[--nodestackindex];
 232         }
 233         // return number of clusters found (even if more than the maxclusters)
 234         return numclusters;
 235 }
 236
 237 static int Mod_Q1BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 238 {
 239         int nodestackindex = 0;
 240         mnode_t *node, *nodestack[1024];
 241         if (!model->brush.num_pvsclusters)
 242                 return true;
 243         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 244         for (;;)
 245         {
 246 #if 1
 247                 if (node->plane)
 248                 {
 249                         // node - recurse down the BSP tree
 250                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 251                         if (sides < 3)
 252                         {
 253                                 if (sides == 0)
 254                                         return -1; // ERROR: NAN bounding box!
 255                                 // box is on one side of plane, take that path
 256                                 node = node->children[sides-1];
 257                         }
 258                         else
 259                         {
 260                                 // box crosses plane, take one path and remember the other
 261                                 if (nodestackindex < 1024)
 262                                         nodestack[nodestackindex++] = node->children[0];
 263                                 node = node->children[1];
 264                         }
 265                         continue;
 266                 }
 267                 else
 268                 {
 269                         // leaf - check cluster bit
 270                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 271                         if (CHECKPVSBIT(pvs, clusterindex))
 272                         {
 273                                 // it is visible, return immediately with the news
 274                                 return true;
 275                         }
 276                 }
 277 #else
 278                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 279                 {
 280                         if (node->plane)
 281                         {
 282                                 if (nodestackindex < 1024)
 283                                         nodestack[nodestackindex++] = node->children[0];
 284                                 node = node->children[1];
 285                                 continue;
 286                         }
 287                         else
 288                         {
 289                                 // leaf - check cluster bit
 290                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 291                                 if (CHECKPVSBIT(pvs, clusterindex))
 292                                 {
 293                                         // it is visible, return immediately with the news
 294                                         return true;
 295                                 }
 296                         }
 297                 }
 298 #endif
 299                 // nothing to see here, try another path we didn't take earlier
 300                 if (nodestackindex == 0)
 301                         break;
 302                 node = nodestack[--nodestackindex];
 303         }
 304         // it is not visible
 305         return false;
 306 }
 307
 308 static int Mod_Q1BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 309 {
 310         int nodestackindex = 0;
 311         mnode_t *node, *nodestack[1024];
 312         if (!model->brush.num_leafs)
 313                 return true;
 314         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 315         for (;;)
 316         {
 317 #if 1
 318                 if (node->plane)
 319                 {
 320                         // node - recurse down the BSP tree
 321                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 322                         if (sides < 3)
 323                         {
 324                                 if (sides == 0)
 325                                         return -1; // ERROR: NAN bounding box!
 326                                 // box is on one side of plane, take that path
 327                                 node = node->children[sides-1];
 328                         }
 329                         else
 330                         {
 331                                 // box crosses plane, take one path and remember the other
 332                                 if (nodestackindex < 1024)
 333                                         nodestack[nodestackindex++] = node->children[0];
 334                                 node = node->children[1];
 335                         }
 336                         continue;
 337                 }
 338                 else
 339                 {
 340                         // leaf - check cluster bit
 341                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 342                         if (CHECKPVSBIT(pvs, clusterindex))
 343                         {
 344                                 // it is visible, return immediately with the news
 345                                 return true;
 346                         }
 347                 }
 348 #else
 349                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 350                 {
 351                         if (node->plane)
 352                         {
 353                                 if (nodestackindex < 1024)
 354                                         nodestack[nodestackindex++] = node->children[0];
 355                                 node = node->children[1];
 356                                 continue;
 357                         }
 358                         else
 359                         {
 360                                 // leaf - check cluster bit
 361                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 362                                 if (CHECKPVSBIT(pvs, clusterindex))
 363                                 {
 364                                         // it is visible, return immediately with the news
 365                                         return true;
 366                                 }
 367                         }
 368                 }
 369 #endif
 370                 // nothing to see here, try another path we didn't take earlier
 371                 if (nodestackindex == 0)
 372                         break;
 373                 node = nodestack[--nodestackindex];
 374         }
 375         // it is not visible
 376         return false;
 377 }
 378
 379 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 380 {
 381         int nodestackindex = 0;
 382         mnode_t *node, *nodestack[1024];
 383         if (!model->brush.num_leafs)
 384                 return true;
 385         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 386         for (;;)
 387         {
 388 #if 1
 389                 if (node->plane)
 390                 {
 391                         // node - recurse down the BSP tree
 392                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 393                         if (sides < 3)
 394                         {
 395                                 if (sides == 0)
 396                                         return -1; // ERROR: NAN bounding box!
 397                                 // box is on one side of plane, take that path
 398                                 node = node->children[sides-1];
 399                         }
 400                         else
 401                         {
 402                                 // box crosses plane, take one path and remember the other
 403                                 if (nodestackindex < 1024)
 404                                         nodestack[nodestackindex++] = node->children[0];
 405                                 node = node->children[1];
 406                         }
 407                         continue;
 408                 }
 409                 else
 410                 {
 411                         // leaf - check if it is visible
 412                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 413                         {
 414                                 // it is visible, return immediately with the news
 415                                 return true;
 416                         }
 417                 }
 418 #else
 419                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 420                 {
 421                         if (node->plane)
 422                         {
 423                                 if (nodestackindex < 1024)
 424                                         nodestack[nodestackindex++] = node->children[0];
 425                                 node = node->children[1];
 426                                 continue;
 427                         }
 428                         else
 429                         {
 430                                 // leaf - check if it is visible
 431                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 432                                 {
 433                                         // it is visible, return immediately with the news
 434                                         return true;
 435                                 }
 436                         }
 437                 }
 438 #endif
 439                 // nothing to see here, try another path we didn't take earlier
 440                 if (nodestackindex == 0)
 441                         break;
 442                 node = nodestack[--nodestackindex];
 443         }
 444         // it is not visible
 445         return false;
 446 }
 447
 448 typedef struct findnonsolidlocationinfo_s
 449 {
 450         vec3_t center;
 451         vec3_t absmin, absmax;
 452         vec_t radius;
 453         vec3_t nudge;
 454         vec_t bestdist;
 455         dp_model_t *model;
 456 }
 457 findnonsolidlocationinfo_t;
 458
 459 static void Mod_Q1BSP_FindNonSolidLocation_r_Triangle(findnonsolidlocationinfo_t *info, msurface_t *surface, int k)
 460 {
 461         int i, *tri;
 462         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 463
 464         tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 465         VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 466         VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 467         VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 468         VectorSubtract(vert[1], vert[0], edge[0]);
 469         VectorSubtract(vert[2], vert[1], edge[1]);
 470         CrossProduct(edge[1], edge[0], facenormal);
 471         if (facenormal[0] || facenormal[1] || facenormal[2])
 472         {
 473                 VectorNormalize(facenormal);
 474                 f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 475                 if (f <= info->bestdist && f >= -info->bestdist)
 476                 {
 477                         VectorSubtract(vert[0], vert[2], edge[2]);
 478                         VectorNormalize(edge[0]);
 479                         VectorNormalize(edge[1]);
 480                         VectorNormalize(edge[2]);
 481                         CrossProduct(facenormal, edge[0], edgenormal[0]);
 482                         CrossProduct(facenormal, edge[1], edgenormal[1]);
 483                         CrossProduct(facenormal, edge[2], edgenormal[2]);
 484                         // face distance
 485                         if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 486                                         && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 487                                         && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 488                         {
 489                                 // we got lucky, the center is within the face
 490                                 dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 491                                 if (dist < 0)
 492                                 {
 493                                         dist = -dist;
 494                                         if (info->bestdist > dist)
 495                                         {
 496                                                 info->bestdist = dist;
 497                                                 VectorScale(facenormal, (info->radius - -dist), info->nudge);
 498                                         }
 499                                 }
 500                                 else
 501                                 {
 502                                         if (info->bestdist > dist)
 503                                         {
 504                                                 info->bestdist = dist;
 505                                                 VectorScale(facenormal, (info->radius - dist), info->nudge);
 506                                         }
 507                                 }
 508                         }
 509                         else
 510                         {
 511                                 // check which edge or vertex the center is nearest
 512                                 for (i = 0;i < 3;i++)
 513                                 {
 514                                         f = DotProduct(info->center, edge[i]);
 515                                         if (f >= DotProduct(vert[0], edge[i])
 516                                                         && f <= DotProduct(vert[1], edge[i]))
 517                                         {
 518                                                 // on edge
 519                                                 VectorMA(info->center, -f, edge[i], point);
 520                                                 dist = sqrt(DotProduct(point, point));
 521                                                 if (info->bestdist > dist)
 522                                                 {
 523                                                         info->bestdist = dist;
 524                                                         VectorScale(point, (info->radius / dist), info->nudge);
 525                                                 }
 526                                                 // skip both vertex checks
 527                                                 // (both are further away than this edge)
 528                                                 i++;
 529                                         }
 530                                         else
 531                                         {
 532                                                 // not on edge, check first vertex of edge
 533                                                 VectorSubtract(info->center, vert[i], point);
 534                                                 dist = sqrt(DotProduct(point, point));
 535                                                 if (info->bestdist > dist)
 536                                                 {
 537                                                         info->bestdist = dist;
 538                                                         VectorScale(point, (info->radius / dist), info->nudge);
 539                                                 }
 540                                         }
 541                                 }
 542                         }
 543                 }
 544         }
 545 }
 546
 547 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 548 {
 549         int surfacenum, k, *mark;
 550         msurface_t *surface;
 551         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 552         {
 553                 surface = info->model->data_surfaces + *mark;
 554                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 555                 {
 556                         if(surface->deprecatedq3num_bboxstride > 0)
 557                         {
 558                                 int i, cnt, tri;
 559                                 cnt = (surface->num_triangles + surface->deprecatedq3num_bboxstride - 1) / surface->deprecatedq3num_bboxstride;
 560                                 for(i = 0; i < cnt; ++i)
 561                                 {
 562                                         if(BoxesOverlap(surface->deprecatedq3data_bbox6f + i * 6, surface->deprecatedq3data_bbox6f + i * 6 + 3, info->absmin, info->absmax))
 563                                         {
 564                                                 for(k = 0; k < surface->deprecatedq3num_bboxstride; ++k)
 565                                                 {
 566                                                         tri = i * surface->deprecatedq3num_bboxstride + k;
 567                                                         if(tri >= surface->num_triangles)
 568                                                                 break;
 569                                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, tri);
 570                                                 }
 571                                         }
 572                                 }
 573                         }
 574                         else
 575                         {
 576                                 for (k = 0;k < surface->num_triangles;k++)
 577                                 {
 578                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
 579                                 }
 580                         }
 581                 }
 582         }
 583 }
 584
 585 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 586 {
 587         if (node->plane)
 588         {
 589                 float f = PlaneDiff(info->center, node->plane);
 590                 if (f >= -info->bestdist)
 591                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 592                 if (f <= info->bestdist)
 593                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 594         }
 595         else
 596         {
 597                 if (((mleaf_t *)node)->numleafsurfaces)
 598                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 599         }
 600 }
 601
 602 static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 603 {
 604         int i;
 605         findnonsolidlocationinfo_t info;
 606         if (model == NULL)
 607         {
 608                 VectorCopy(in, out);
 609                 return;
 610         }
 611         VectorCopy(in, info.center);
 612         info.radius = radius;
 613         info.model = model;
 614         i = 0;
 615         do
 616         {
 617                 VectorClear(info.nudge);
 618                 info.bestdist = radius;
 619                 VectorCopy(info.center, info.absmin);
 620                 VectorCopy(info.center, info.absmax);
 621                 info.absmin[0] -= info.radius + 1;
 622                 info.absmin[1] -= info.radius + 1;
 623                 info.absmin[2] -= info.radius + 1;
 624                 info.absmax[0] += info.radius + 1;
 625                 info.absmax[1] += info.radius + 1;
 626                 info.absmax[2] += info.radius + 1;
 627                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 628                 VectorAdd(info.center, info.nudge, info.center);
 629         }
 630         while (info.bestdist < radius && ++i < 10);
 631         VectorCopy(info.center, out);
 632 }
 633
 634 int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
 635 {
 636         switch(nativecontents)
 637         {
 638                 case CONTENTS_EMPTY:
 639                         return 0;
 640                 case CONTENTS_SOLID:
 641                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
 642                 case CONTENTS_WATER:
 643                         return SUPERCONTENTS_WATER;
 644                 case CONTENTS_SLIME:
 645                         return SUPERCONTENTS_SLIME;
 646                 case CONTENTS_LAVA:
 647                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 648                 case CONTENTS_SKY:
 649                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE; // to match behaviour of Q3 maps, let sky count as opaque
 650         }
 651         return 0;
 652 }
 653
 654 int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
 655 {
 656         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 657                 return CONTENTS_SOLID;
 658         if (supercontents & SUPERCONTENTS_SKY)
 659                 return CONTENTS_SKY;
 660         if (supercontents & SUPERCONTENTS_LAVA)
 661                 return CONTENTS_LAVA;
 662         if (supercontents & SUPERCONTENTS_SLIME)
 663                 return CONTENTS_SLIME;
 664         if (supercontents & SUPERCONTENTS_WATER)
 665                 return CONTENTS_WATER;
 666         return CONTENTS_EMPTY;
 667 }
 668
 669 typedef struct RecursiveHullCheckTraceInfo_s
 670 {
 671         // the hull we're tracing through
 672         const hull_t *hull;
 673
 674         // the trace structure to fill in
 675         trace_t *trace;
 676
 677         // start, end, and end - start (in model space)
 678         double start[3];
 679         double end[3];
 680         double dist[3];
 681 }
 682 RecursiveHullCheckTraceInfo_t;
 683
 684 // 1/32 epsilon to keep floating point happy
 685 #define DIST_EPSILON (0.03125)
 686
 687 #define HULLCHECKSTATE_EMPTY 0
 688 #define HULLCHECKSTATE_SOLID 1
 689 #define HULLCHECKSTATE_DONE 2
 690
 691 extern cvar_t collision_prefernudgedfraction;
 692 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 693 {
 694         // status variables, these don't need to be saved on the stack when
 695         // recursing...  but are because this should be thread-safe
 696         // (note: tracing against a bbox is not thread-safe, yet)
 697         int ret;
 698         mplane_t *plane;
 699         double t1, t2;
 700
 701         // variables that need to be stored on the stack when recursing
 702         mclipnode_t *node;
 703         int side;
 704         double midf, mid[3];
 705
 706         // LordHavoc: a goto!  everyone flee in terror... :)
 707 loc0:
 708         // check for empty
 709         if (num < 0)
 710         {
 711                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 712                 if (!t->trace->startfound)
 713                 {
 714                         t->trace->startfound = true;
 715                         t->trace->startsupercontents |= num;
 716                 }
 717                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 718                         t->trace->inwater = true;
 719                 if (num == 0)
 720                         t->trace->inopen = true;
 721                 if (num & SUPERCONTENTS_SOLID)
 722                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 723                 else if (num & SUPERCONTENTS_SKY)
 724                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 725                 else if (num & SUPERCONTENTS_LAVA)
 726                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 727                 else if (num & SUPERCONTENTS_SLIME)
 728                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 729                 else
 730                         t->trace->hittexture = &mod_q1bsp_texture_water;
 731                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 732                 t->trace->hitsupercontents = num;
 733                 if (num & t->trace->hitsupercontentsmask)
 734                 {
 735                         // if the first leaf is solid, set startsolid
 736                         if (t->trace->allsolid)
 737                                 t->trace->startsolid = true;
 738 #if COLLISIONPARANOID >= 3
 739                         Con_Print("S");
 740 #endif
 741                         return HULLCHECKSTATE_SOLID;
 742                 }
 743                 else
 744                 {
 745                         t->trace->allsolid = false;
 746 #if COLLISIONPARANOID >= 3
 747                         Con_Print("E");
 748 #endif
 749                         return HULLCHECKSTATE_EMPTY;
 750                 }
 751         }
 752
 753         // find the point distances
 754         node = t->hull->clipnodes + num;
 755
 756         plane = t->hull->planes + node->planenum;
 757         if (plane->type < 3)
 758         {
 759                 t1 = p1[plane->type] - plane->dist;
 760                 t2 = p2[plane->type] - plane->dist;
 761         }
 762         else
 763         {
 764                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 765                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 766         }
 767
 768         if (t1 < 0)
 769         {
 770                 if (t2 < 0)
 771                 {
 772 #if COLLISIONPARANOID >= 3
 773                         Con_Print("<");
 774 #endif
 775                         num = node->children[1];
 776                         goto loc0;
 777                 }
 778                 side = 1;
 779         }
 780         else
 781         {
 782                 if (t2 >= 0)
 783                 {
 784 #if COLLISIONPARANOID >= 3
 785                         Con_Print(">");
 786 #endif
 787                         num = node->children[0];
 788                         goto loc0;
 789                 }
 790                 side = 0;
 791         }
 792
 793         // the line intersects, find intersection point
 794         // LordHavoc: this uses the original trace for maximum accuracy
 795 #if COLLISIONPARANOID >= 3
 796         Con_Print("M");
 797 #endif
 798         if (plane->type < 3)
 799         {
 800                 t1 = t->start[plane->type] - plane->dist;
 801                 t2 = t->end[plane->type] - plane->dist;
 802         }
 803         else
 804         {
 805                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 806                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 807         }
 808
 809         midf = t1 / (t1 - t2);
 810         midf = bound(p1f, midf, p2f);
 811         VectorMA(t->start, midf, t->dist, mid);
 812
 813         // recurse both sides, front side first
 814         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 815         // if this side is not empty, return what it is (solid or done)
 816         if (ret != HULLCHECKSTATE_EMPTY)
 817                 return ret;
 818
 819         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 820         // if other side is not solid, return what it is (empty or done)
 821         if (ret != HULLCHECKSTATE_SOLID)
 822                 return ret;
 823
 824         // front is air and back is solid, this is the impact point...
 825         if (side)
 826         {
 827                 t->trace->plane.dist = -plane->dist;
 828                 VectorNegate (plane->normal, t->trace->plane.normal);
 829         }
 830         else
 831         {
 832                 t->trace->plane.dist = plane->dist;
 833                 VectorCopy (plane->normal, t->trace->plane.normal);
 834         }
 835
 836         // calculate the true fraction
 837         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 838         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 839         midf = t1 / (t1 - t2);
 840         t->trace->realfraction = bound(0, midf, 1);
 841
 842         // calculate the return fraction which is nudged off the surface a bit
 843         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 844         t->trace->fraction = bound(0, midf, 1);
 845
 846         if (collision_prefernudgedfraction.integer)
 847                 t->trace->realfraction = t->trace->fraction;
 848
 849 #if COLLISIONPARANOID >= 3
 850         Con_Print("D");
 851 #endif
 852         return HULLCHECKSTATE_DONE;
 853 }
 854
 855 //#if COLLISIONPARANOID < 2
 856 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 857 {
 858         mplane_t *plane;
 859         mclipnode_t *nodes = t->hull->clipnodes;
 860         mplane_t *planes = t->hull->planes;
 861         vec3_t point;
 862         VectorCopy(t->start, point);
 863         while (num >= 0)
 864         {
 865                 plane = planes + nodes[num].planenum;
 866                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 867         }
 868         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 869         t->trace->startsupercontents |= num;
 870         if (num & SUPERCONTENTS_LIQUIDSMASK)
 871                 t->trace->inwater = true;
 872         if (num == 0)
 873                 t->trace->inopen = true;
 874         if (num & t->trace->hitsupercontentsmask)
 875         {
 876                 t->trace->allsolid = t->trace->startsolid = true;
 877                 return HULLCHECKSTATE_SOLID;
 878         }
 879         else
 880         {
 881                 t->trace->allsolid = t->trace->startsolid = false;
 882                 return HULLCHECKSTATE_EMPTY;
 883         }
 884 }
 885 //#endif
 886
 887 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)
 888 {
 889         RecursiveHullCheckTraceInfo_t rhc;
 890
 891         memset(&rhc, 0, sizeof(rhc));
 892         memset(trace, 0, sizeof(trace_t));
 893         rhc.trace = trace;
 894         rhc.trace->fraction = 1;
 895         rhc.trace->realfraction = 1;
 896         rhc.trace->allsolid = true;
 897         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 898         VectorCopy(start, rhc.start);
 899         VectorCopy(start, rhc.end);
 900         Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 901 }
 902
 903 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)
 904 {
 905         RecursiveHullCheckTraceInfo_t rhc;
 906
 907         if (VectorCompare(start, end))
 908         {
 909                 Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 910                 return;
 911         }
 912
 913         memset(&rhc, 0, sizeof(rhc));
 914         memset(trace, 0, sizeof(trace_t));
 915         rhc.trace = trace;
 916         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 917         rhc.trace->fraction = 1;
 918         rhc.trace->realfraction = 1;
 919         rhc.trace->allsolid = true;
 920         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 921         VectorCopy(start, rhc.start);
 922         VectorCopy(end, rhc.end);
 923         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 924 #if COLLISIONPARANOID >= 2
 925         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]);
 926         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 927         {
 928
 929                 double test[3];
 930                 trace_t testtrace;
 931                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 932                 memset(&testtrace, 0, sizeof(trace_t));
 933                 rhc.trace = &testtrace;
 934                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 935                 rhc.trace->fraction = 1;
 936                 rhc.trace->realfraction = 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)
 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);
 965                 else
 966                         Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
 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->fraction = 1;
 975         rhc.trace->realfraction = 1;
 976         rhc.trace->allsolid = true;
 977         VectorSubtract(boxmaxs, boxmins, boxsize);
 978         if (boxsize[0] < 3)
 979                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 980         else if (model->brush.ishlbsp)
 981         {
 982                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 983                 // minor float precision errors from the box being transformed around
 984                 if (boxsize[0] < 32.1)
 985                 {
 986                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 987                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 988                         else
 989                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 990                 }
 991                 else
 992                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 993         }
 994         else
 995         {
 996                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 997                 // minor float precision errors from the box being transformed around
 998                 if (boxsize[0] < 32.1)
 999                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
1000                 else
1001                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
1002         }
1003         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
1004         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
1005         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1006 #if COLLISIONPARANOID >= 2
1007         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]);
1008         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1009         {
1010
1011                 double test[3];
1012                 trace_t testtrace;
1013                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
1014                 memset(&testtrace, 0, sizeof(trace_t));
1015                 rhc.trace = &testtrace;
1016                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1017                 rhc.trace->fraction = 1;
1018                 rhc.trace->realfraction = 1;
1019                 rhc.trace->allsolid = true;
1020                 VectorCopy(test, rhc.start);
1021                 VectorCopy(test, rhc.end);
1022                 VectorClear(rhc.dist);
1023                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1024                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
1025                 if (!trace->startsolid && testtrace.startsolid)
1026                         Con_Printf(" - ended in solid!\n");
1027         }
1028         Con_Print("\n");
1029 #else
1030         if (VectorLength2(rhc.dist))
1031                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1032         else
1033                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1034 #endif
1035 }
1036
1037 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
1038 {
1039         int num = model->brushq1.hulls[0].firstclipnode;
1040         mplane_t *plane;
1041         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
1042         mplane_t *planes = model->brushq1.hulls[0].planes;
1043         while (num >= 0)
1044         {
1045                 plane = planes + nodes[num].planenum;
1046                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
1047         }
1048         return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
1049 }
1050
1051 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 boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1052 {
1053 #if 1
1054         colbrushf_t cbox;
1055         colplanef_t cbox_planes[6];
1056         cbox.isaabb = true;
1057         cbox.hasaabbplanes = true;
1058         cbox.supercontents = boxsupercontents;
1059         cbox.numplanes = 6;
1060         cbox.numpoints = 0;
1061         cbox.numtriangles = 0;
1062         cbox.planes = cbox_planes;
1063         cbox.points = NULL;
1064         cbox.elements = NULL;
1065         cbox.markframe = 0;
1066         cbox.mins[0] = 0;
1067         cbox.mins[1] = 0;
1068         cbox.mins[2] = 0;
1069         cbox.maxs[0] = 0;
1070         cbox.maxs[1] = 0;
1071         cbox.maxs[2] = 0;
1072         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];
1073         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];
1074         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];
1075         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];
1076         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];
1077         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];
1078         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
1079         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
1080         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
1081         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
1082         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
1083         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
1084         memset(trace, 0, sizeof(trace_t));
1085         trace->hitsupercontentsmask = hitsupercontentsmask;
1086         trace->fraction = 1;
1087         trace->realfraction = 1;
1088         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
1089 #else
1090         RecursiveHullCheckTraceInfo_t rhc;
1091         static hull_t box_hull;
1092         static mclipnode_t box_clipnodes[6];
1093         static mplane_t box_planes[6];
1094         // fill in a default trace
1095         memset(&rhc, 0, sizeof(rhc));
1096         memset(trace, 0, sizeof(trace_t));
1097         //To keep everything totally uniform, bounding boxes are turned into small
1098         //BSP trees instead of being compared directly.
1099         // create a temp hull from bounding box sizes
1100         box_planes[0].dist = cmaxs[0] - mins[0];
1101         box_planes[1].dist = cmins[0] - maxs[0];
1102         box_planes[2].dist = cmaxs[1] - mins[1];
1103         box_planes[3].dist = cmins[1] - maxs[1];
1104         box_planes[4].dist = cmaxs[2] - mins[2];
1105         box_planes[5].dist = cmins[2] - maxs[2];
1106 #if COLLISIONPARANOID >= 3
1107         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]);
1108 #endif
1109
1110         if (box_hull.clipnodes == NULL)
1111         {
1112                 int i, side;
1113
1114                 //Set up the planes and clipnodes so that the six floats of a bounding box
1115                 //can just be stored out and get a proper hull_t structure.
1116
1117                 box_hull.clipnodes = box_clipnodes;
1118                 box_hull.planes = box_planes;
1119                 box_hull.firstclipnode = 0;
1120                 box_hull.lastclipnode = 5;
1121
1122                 for (i = 0;i < 6;i++)
1123                 {
1124                         box_clipnodes[i].planenum = i;
1125
1126                         side = i&1;
1127
1128                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
1129                         if (i != 5)
1130                                 box_clipnodes[i].children[side^1] = i + 1;
1131                         else
1132                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
1133
1134                         box_planes[i].type = i>>1;
1135                         box_planes[i].normal[i>>1] = 1;
1136                 }
1137         }
1138
1139         // trace a line through the generated clipping hull
1140         //rhc.boxsupercontents = boxsupercontents;
1141         rhc.hull = &box_hull;
1142         rhc.trace = trace;
1143         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1144         rhc.trace->fraction = 1;
1145         rhc.trace->realfraction = 1;
1146         rhc.trace->allsolid = true;
1147         VectorCopy(start, rhc.start);
1148         VectorCopy(end, rhc.end);
1149         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1150         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1151         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1152         if (rhc.trace->startsupercontents)
1153                 rhc.trace->startsupercontents = boxsupercontents;
1154 #endif
1155 }
1156
1157 void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1158 {
1159         memset(trace, 0, sizeof(trace_t));
1160         trace->fraction = 1;
1161         trace->realfraction = 1;
1162         if (BoxesOverlap(start, start, cmins, cmaxs))
1163         {
1164                 trace->startsupercontents |= boxsupercontents;
1165                 if (hitsupercontentsmask & boxsupercontents)
1166                 {
1167                         trace->startsolid = true;
1168                         trace->allsolid = true;
1169                 }
1170         }
1171 }
1172
1173 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1174 {
1175         trace_t trace;
1176         Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
1177         return trace.fraction == 1;
1178 }
1179
1180 static int Mod_Q1BSP_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)
1181 {
1182         int side;
1183         float front, back;
1184         float mid, distz = endz - startz;
1185
1186 loc0:
1187         if (!node->plane)
1188                 return false;           // didn't hit anything
1189
1190         switch (node->plane->type)
1191         {
1192         case PLANE_X:
1193                 node = node->children[x < node->plane->dist];
1194                 goto loc0;
1195         case PLANE_Y:
1196                 node = node->children[y < node->plane->dist];
1197                 goto loc0;
1198         case PLANE_Z:
1199                 side = startz < node->plane->dist;
1200                 if ((endz < node->plane->dist) == side)
1201                 {
1202                         node = node->children[side];
1203                         goto loc0;
1204                 }
1205                 // found an intersection
1206                 mid = node->plane->dist;
1207                 break;
1208         default:
1209                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1210                 front += startz * node->plane->normal[2];
1211                 back += endz * node->plane->normal[2];
1212                 side = front < node->plane->dist;
1213                 if ((back < node->plane->dist) == side)
1214                 {
1215                         node = node->children[side];
1216                         goto loc0;
1217                 }
1218                 // found an intersection
1219                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1220                 break;
1221         }
1222
1223         // go down front side
1224         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1225                 return true;    // hit something
1226         else
1227         {
1228                 // check for impact on this node
1229                 if (node->numsurfaces)
1230                 {
1231                         int i, dsi, dti, lmwidth, lmheight;
1232                         float ds, dt;
1233                         msurface_t *surface;
1234                         unsigned char *lightmap;
1235                         int maps, line3, size3;
1236                         float dsfrac;
1237                         float dtfrac;
1238                         float scale, w, w00, w01, w10, w11;
1239
1240                         surface = model->data_surfaces + node->firstsurface;
1241                         for (i = 0;i < node->numsurfaces;i++, surface++)
1242                         {
1243                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo || !surface->lightmapinfo->samples)
1244                                         continue;       // no lightmaps
1245
1246                                 // location we want to sample in the lightmap
1247                                 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;
1248                                 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;
1249
1250                                 // check the bounds
1251                                 dsi = (int)ds;
1252                                 dti = (int)dt;
1253                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1254                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1255
1256                                 // is it in bounds?
1257                                 if (dsi >= 0 && dsi < lmwidth-1 && dti >= 0 && dti < lmheight-1)
1258                                 {
1259                                         // calculate bilinear interpolation factors
1260                                         // and also multiply by fixedpoint conversion factors
1261                                         dsfrac = ds - dsi;
1262                                         dtfrac = dt - dti;
1263                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1264                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1265                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1266                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1267
1268                                         // values for pointer math
1269                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1270                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1271
1272                                         // look up the pixel
1273                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
1274
1275                                         // bilinear filter each lightmap style, and sum them
1276                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1277                                         {
1278                                                 scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]];
1279                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1280                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1281                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1282                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1283                                                 lightmap += size3;
1284                                         }
1285
1286                                         return true; // success
1287                                 }
1288                         }
1289                 }
1290
1291                 // go down back side
1292                 node = node->children[side ^ 1];
1293                 startz = mid;
1294                 distz = endz - startz;
1295                 goto loc0;
1296         }
1297 }
1298
1299 void Mod_Q1BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1300 {
1301         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1302         VectorSet(diffusenormal, 0, 0, 1);
1303
1304         if (!model->brushq1.lightdata)
1305         {
1306                 VectorSet(ambientcolor, 1, 1, 1);
1307                 VectorSet(diffusecolor, 0, 0, 0);
1308                 return;
1309         }
1310
1311         Mod_Q1BSP_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);
1312 }
1313
1314 static const texture_t *Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(RecursiveHullCheckTraceInfo_t *t, const dp_model_t *model, const mnode_t *node, double mid[3])
1315 {
1316         int i;
1317         int j;
1318         int k;
1319         const msurface_t *surface;
1320         float normal[3];
1321         float v0[3];
1322         float v1[3];
1323         float edgedir[3];
1324         float edgenormal[3];
1325         float p[4];
1326         float midf;
1327         float t1;
1328         float t2;
1329         VectorCopy(mid, p);
1330         p[3] = 1;
1331         surface = model->data_surfaces + node->firstsurface;
1332         for (i = 0;i < node->numsurfaces;i++, surface++)
1333         {
1334                 // skip surfaces whose bounding box does not include the point
1335 //              if (!BoxesOverlap(mid, mid, surface->mins, surface->maxs))
1336 //                      continue;
1337                 // skip faces with contents we don't care about
1338                 if (!(t->trace->hitsupercontentsmask & surface->texture->supercontents))
1339                         continue;
1340                 // get the surface normal - since it is flat we know any vertex normal will suffice
1341                 VectorCopy(model->surfmesh.data_normal3f + 3 * surface->num_firstvertex, normal);
1342                 // skip backfaces
1343                 if (DotProduct(t->dist, normal) > 0)
1344                         continue;
1345                 // iterate edges and see if the point is outside one of them
1346                 for (j = 0, k = surface->num_vertices - 1;j < surface->num_vertices;k = j, j++)
1347                 {
1348                         VectorCopy(model->surfmesh.data_vertex3f + 3 * (surface->num_firstvertex + k), v0);
1349                         VectorCopy(model->surfmesh.data_vertex3f + 3 * (surface->num_firstvertex + j), v1);
1350                         VectorSubtract(v0, v1, edgedir);
1351                         CrossProduct(edgedir, normal, edgenormal);
1352                         if (DotProduct(edgenormal, p) > DotProduct(edgenormal, v0))
1353                                 break;
1354                 }
1355                 // if the point is outside one of the edges, it is not within the surface
1356                 if (j < surface->num_vertices)
1357                         continue;
1358
1359                 // we hit a surface, this is the impact point...
1360                 VectorCopy(normal, t->trace->plane.normal);
1361                 t->trace->plane.dist = DotProduct(normal, p);
1362
1363                 // calculate the true fraction
1364                 t1 = DotProduct(t->start, t->trace->plane.normal) - t->trace->plane.dist;
1365                 t2 = DotProduct(t->end, t->trace->plane.normal) - t->trace->plane.dist;
1366                 midf = t1 / (t1 - t2);
1367                 t->trace->realfraction = midf;
1368
1369                 // calculate the return fraction which is nudged off the surface a bit
1370                 midf = (t1 - DIST_EPSILON) / (t1 - t2);
1371                 t->trace->fraction = bound(0, midf, 1);
1372
1373                 if (collision_prefernudgedfraction.integer)
1374                         t->trace->realfraction = t->trace->fraction;
1375
1376                 t->trace->hittexture = surface->texture->currentframe;
1377                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
1378                 t->trace->hitsupercontents = t->trace->hittexture->supercontents;
1379                 return surface->texture->currentframe;
1380         }
1381         return NULL;
1382 }
1383
1384 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])
1385 {
1386         const mplane_t *plane;
1387         double t1, t2;
1388         int side;
1389         double midf, mid[3];
1390         const mleaf_t *leaf;
1391
1392         while (node->plane)
1393         {
1394                 plane = node->plane;
1395                 if (plane->type < 3)
1396                 {
1397                         t1 = p1[plane->type] - plane->dist;
1398                         t2 = p2[plane->type] - plane->dist;
1399                 }
1400                 else
1401                 {
1402                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1403                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1404                 }
1405                 if (t1 < 0)
1406                 {
1407                         if (t2 < 0)
1408                         {
1409                                 node = node->children[1];
1410                                 continue;
1411                         }
1412                         side = 1;
1413                 }
1414                 else
1415                 {
1416                         if (t2 >= 0)
1417                         {
1418                                 node = node->children[0];
1419                                 continue;
1420                         }
1421                         side = 0;
1422                 }
1423
1424                 // the line intersects, find intersection point
1425                 // LordHavoc: this uses the original trace for maximum accuracy
1426                 if (plane->type < 3)
1427                 {
1428                         t1 = t->start[plane->type] - plane->dist;
1429                         t2 = t->end[plane->type] - plane->dist;
1430                 }
1431                 else
1432                 {
1433                         t1 = DotProduct (plane->normal, t->start) - plane->dist;
1434                         t2 = DotProduct (plane->normal, t->end) - plane->dist;
1435                 }
1436
1437                 midf = t1 / (t1 - t2);
1438                 VectorMA(t->start, midf, t->dist, mid);
1439
1440                 // recurse both sides, front side first, return if we hit a surface
1441                 if (Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(t, model, node->children[side], p1, mid) == HULLCHECKSTATE_DONE)
1442                         return HULLCHECKSTATE_DONE;
1443
1444                 // test each surface on the node
1445                 Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(t, model, node, mid);
1446                 if (t->trace->hittexture)
1447                         return HULLCHECKSTATE_DONE;
1448
1449                 // recurse back side
1450                 return Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(t, model, node->children[side ^ 1], mid, p2);
1451         }
1452         leaf = (const mleaf_t *)node;
1453         side = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, leaf->contents);
1454         if (!t->trace->startfound)
1455         {
1456                 t->trace->startfound = true;
1457                 t->trace->startsupercontents |= side;
1458         }
1459         if (side & SUPERCONTENTS_LIQUIDSMASK)
1460                 t->trace->inwater = true;
1461         if (side == 0)
1462                 t->trace->inopen = true;
1463         if (side & t->trace->hitsupercontentsmask)
1464         {
1465                 // if the first leaf is solid, set startsolid
1466                 if (t->trace->allsolid)
1467                         t->trace->startsolid = true;
1468                 return HULLCHECKSTATE_SOLID;
1469         }
1470         else
1471         {
1472                 t->trace->allsolid = false;
1473                 return HULLCHECKSTATE_EMPTY;
1474         }
1475 }
1476
1477 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)
1478 {
1479         RecursiveHullCheckTraceInfo_t rhc;
1480
1481         memset(&rhc, 0, sizeof(rhc));
1482         memset(trace, 0, sizeof(trace_t));
1483         rhc.trace = trace;
1484         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1485         rhc.trace->fraction = 1;
1486         rhc.trace->realfraction = 1;
1487         rhc.trace->allsolid = true;
1488         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
1489         VectorCopy(start, rhc.start);
1490         VectorCopy(end, rhc.end);
1491         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1492         Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(&rhc, model, model->brush.data_nodes + rhc.hull->firstclipnode, rhc.start, rhc.end);
1493         VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1494 }
1495
1496 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1497 {
1498         int c;
1499         unsigned char *outstart = out;
1500         while (out < outend)
1501         {
1502                 if (in == inend)
1503                 {
1504                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1505                         return;
1506                 }
1507                 c = *in++;
1508                 if (c)
1509                         *out++ = c;
1510                 else
1511                 {
1512                         if (in == inend)
1513                         {
1514                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1515                                 return;
1516                         }
1517                         for (c = *in++;c > 0;c--)
1518                         {
1519                                 if (out == outend)
1520                                 {
1521                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1522                                         return;
1523                                 }
1524                                 *out++ = 0;
1525                         }
1526                 }
1527         }
1528 }
1529
1530 /*
1531 =============
1532 R_Q1BSP_LoadSplitSky
1533
1534 A sky texture is 256*128, with the right side being a masked overlay
1535 ==============
1536 */
1537 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1538 {
1539         int x, y;
1540         int w = width/2;
1541         int h = height;
1542         unsigned int *solidpixels = (unsigned int *)Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1543         unsigned int *alphapixels = (unsigned int *)Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1544
1545         // allocate a texture pool if we need it
1546         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1547                 loadmodel->texturepool = R_AllocTexturePool();
1548
1549         if (bytesperpixel == 4)
1550         {
1551                 for (y = 0;y < h;y++)
1552                 {
1553                         for (x = 0;x < w;x++)
1554                         {
1555                                 solidpixels[y*w+x] = ((unsigned *)src)[y*width+x+w];
1556                                 alphapixels[y*w+x] = ((unsigned *)src)[y*width+x];
1557                         }
1558                 }
1559         }
1560         else
1561         {
1562                 // make an average value for the back to avoid
1563                 // a fringe on the top level
1564                 int p, r, g, b;
1565                 union
1566                 {
1567                         unsigned int i;
1568                         unsigned char b[4];
1569                 }
1570                 bgra;
1571                 r = g = b = 0;
1572                 for (y = 0;y < h;y++)
1573                 {
1574                         for (x = 0;x < w;x++)
1575                         {
1576                                 p = src[x*width+y+w];
1577                                 r += palette_rgb[p][0];
1578                                 g += palette_rgb[p][1];
1579                                 b += palette_rgb[p][2];
1580                         }
1581                 }
1582                 bgra.b[2] = r/(w*h);
1583                 bgra.b[1] = g/(w*h);
1584                 bgra.b[0] = b/(w*h);
1585                 bgra.b[3] = 0;
1586                 for (y = 0;y < h;y++)
1587                 {
1588                         for (x = 0;x < w;x++)
1589                         {
1590                                 solidpixels[y*w+x] = palette_bgra_complete[src[y*width+x+w]];
1591                                 p = src[y*width+x];
1592                                 alphapixels[y*w+x] = p ? palette_bgra_complete[p] : bgra.i;
1593                         }
1594                 }
1595         }
1596
1597         loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h, vid.sRGB3D);
1598         loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h, vid.sRGB3D);
1599         Mem_Free(solidpixels);
1600         Mem_Free(alphapixels);
1601 }
1602
1603 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1604 {
1605         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1606         skinframe_t *skinframe;
1607         miptex_t *dmiptex;
1608         texture_t *tx, *tx2, *anims[10], *altanims[10];
1609         texture_t backuptex;
1610         dmiptexlump_t *m;
1611         unsigned char *data, *mtdata;
1612         const char *s;
1613         char mapname[MAX_QPATH], name[MAX_QPATH];
1614         unsigned char zeroopaque[4], zerotrans[4];
1615         Vector4Set(zeroopaque, 0, 0, 0, 255);
1616         Vector4Set(zerotrans, 0, 0, 0, 128);
1617
1618         loadmodel->data_textures = NULL;
1619
1620         // add two slots for notexture walls and notexture liquids
1621         if (l->filelen)
1622         {
1623                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1624                 m->nummiptex = LittleLong (m->nummiptex);
1625                 loadmodel->num_textures = m->nummiptex + 2;
1626                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1627         }
1628         else
1629         {
1630                 m = NULL;
1631                 loadmodel->num_textures = 2;
1632                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1633         }
1634
1635         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1636
1637         // fill out all slots with notexture
1638         if (cls.state != ca_dedicated)
1639                 skinframe = R_SkinFrame_LoadMissing();
1640         else
1641                 skinframe = NULL;
1642         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1643         {
1644                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1645                 tx->width = 16;
1646                 tx->height = 16;
1647                 if (cls.state != ca_dedicated)
1648                 {
1649                         tx->numskinframes = 1;
1650                         tx->skinframerate = 1;
1651                         tx->skinframes[0] = skinframe;
1652                         tx->currentskinframe = tx->skinframes[0];
1653                 }
1654                 tx->basematerialflags = MATERIALFLAG_WALL;
1655                 if (i == loadmodel->num_textures - 1)
1656                 {
1657                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1658                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1659                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1660                 }
1661                 else
1662                 {
1663                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1664                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1665                 }
1666                 tx->currentframe = tx;
1667
1668                 // clear water settings
1669                 tx->reflectmin = 0;
1670                 tx->reflectmax = 1;
1671                 tx->refractfactor = 1;
1672                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1673                 tx->reflectfactor = 1;
1674                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1675                 tx->r_water_wateralpha = 1;
1676                 tx->offsetmapping = OFFSETMAPPING_DEFAULT;
1677                 tx->offsetscale = 1;
1678                 tx->offsetbias = 0;
1679                 tx->specularscalemod = 1;
1680                 tx->specularpowermod = 1;
1681         }
1682
1683         if (!m)
1684         {
1685                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1686                 return;
1687         }
1688
1689         s = loadmodel->name;
1690         if (!strncasecmp(s, "maps/", 5))
1691                 s += 5;
1692         FS_StripExtension(s, mapname, sizeof(mapname));
1693
1694         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1695         dofs = m->dataofs;
1696         // LordHavoc: mostly rewritten map texture loader
1697         for (i = 0;i < m->nummiptex;i++)
1698         {
1699                 dofs[i] = LittleLong(dofs[i]);
1700                 if (r_nosurftextures.integer)
1701                         continue;
1702                 if (dofs[i] == -1)
1703                 {
1704                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1705                         continue;
1706                 }
1707                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1708
1709                 // copy name, but only up to 16 characters
1710                 // (the output buffer can hold more than this, but the input buffer is
1711                 //  only 16)
1712                 for (j = 0;j < 16 && dmiptex->name[j];j++)
1713                         name[j] = dmiptex->name[j];
1714                 name[j] = 0;
1715
1716                 if (!name[0])
1717                 {
1718                         dpsnprintf(name, sizeof(name), "unnamed%i", i);
1719                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1720                 }
1721
1722                 mtwidth = LittleLong(dmiptex->width);
1723                 mtheight = LittleLong(dmiptex->height);
1724                 mtdata = NULL;
1725                 j = LittleLong(dmiptex->offsets[0]);
1726                 if (j)
1727                 {
1728                         // texture included
1729                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1730                         {
1731                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, dmiptex->name);
1732                                 continue;
1733                         }
1734                         mtdata = (unsigned char *)dmiptex + j;
1735                 }
1736
1737                 if ((mtwidth & 15) || (mtheight & 15))
1738                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, dmiptex->name);
1739
1740                 // LordHavoc: force all names to lowercase
1741                 for (j = 0;name[j];j++)
1742                         if (name[j] >= 'A' && name[j] <= 'Z')
1743                                 name[j] += 'a' - 'A';
1744
1745                 // LordHavoc: backup the texture_t because q3 shader loading overwrites it
1746                 backuptex = loadmodel->data_textures[i];
1747                 if (dmiptex->name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
1748                         continue;
1749                 loadmodel->data_textures[i] = backuptex;
1750
1751                 tx = loadmodel->data_textures + i;
1752                 strlcpy(tx->name, name, sizeof(tx->name));
1753                 tx->width = mtwidth;
1754                 tx->height = mtheight;
1755
1756                 if (tx->name[0] == '*')
1757                 {
1758                         if (!strncmp(tx->name, "*lava", 5))
1759                         {
1760                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1761                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1762                         }
1763                         else if (!strncmp(tx->name, "*slime", 6))
1764                         {
1765                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1766                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1767                         }
1768                         else
1769                         {
1770                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1771                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1772                         }
1773                 }
1774                 else if (!strncmp(tx->name, "sky", 3))
1775                 {
1776                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1777                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1778                 }
1779                 else
1780                 {
1781                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1782                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1783                 }
1784
1785                 if (cls.state != ca_dedicated)
1786                 {
1787                         // LordHavoc: HL sky textures are entirely different than quake
1788                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
1789                         {
1790                                 data = loadimagepixelsbgra(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), false, false, false, NULL);
1791                                 if (!data)
1792                                         data = loadimagepixelsbgra(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), false, false, false, NULL);
1793                                 if (data && image_width == image_height * 2)
1794                                 {
1795                                         R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1796                                         Mem_Free(data);
1797                                 }
1798                                 else if (mtdata != NULL)
1799                                         R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1800                         }
1801                         else
1802                         {
1803                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false);
1804                                 if (!skinframe)
1805                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false);
1806                                 if (skinframe)
1807                                         tx->offsetmapping = OFFSETMAPPING_DEFAULT; // allow offsetmapping on external textures without a q3 shader
1808                                 if (!skinframe)
1809                                 {
1810                                         // did not find external texture, load it from the bsp or wad3
1811                                         if (loadmodel->brush.ishlbsp)
1812                                         {
1813                                                 // internal texture overrides wad
1814                                                 unsigned char *pixels, *freepixels;
1815                                                 pixels = freepixels = NULL;
1816                                                 if (mtdata)
1817                                                         pixels = W_ConvertWAD3TextureBGRA(dmiptex);
1818                                                 if (pixels == NULL)
1819                                                         pixels = freepixels = W_GetTextureBGRA(tx->name);
1820                                                 if (pixels != NULL)
1821                                                 {
1822                                                         tx->width = image_width;
1823                                                         tx->height = image_height;
1824                                                         skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, pixels, image_width, image_height, true);
1825                                                 }
1826                                                 if (freepixels)
1827                                                         Mem_Free(freepixels);
1828                                         }
1829                                         else if (mtdata) // texture included
1830                                                 skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1831                                 }
1832                                 // if skinframe is still NULL the "missing" texture will be used
1833                                 if (skinframe)
1834                                         tx->skinframes[0] = skinframe;
1835                         }
1836                         // LordHavoc: some Tenebrae textures get replaced by black
1837                         if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1838                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zerotrans, 1, 1, false);
1839                         else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1840                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zeroopaque, 1, 1, false);
1841                 }
1842
1843                 tx->basematerialflags = MATERIALFLAG_WALL;
1844                 if (tx->name[0] == '*')
1845                 {
1846                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1847                         if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1848                                 tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1849                         else if (!strncmp(tx->name,"*lava",5)
1850                          || !strncmp(tx->name,"*teleport",9)
1851                          || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1852                                 tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1853                         else
1854                                 tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1855                         if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1856                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1857                 }
1858                 else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1859                 {
1860                         // replace the texture with black
1861                         tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1862                 }
1863                 else if (!strncmp(tx->name, "sky", 3))
1864                         tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1865                 else if (!strcmp(tx->name, "caulk"))
1866                         tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
1867                 else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1868                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1869
1870                 // start out with no animation
1871                 tx->currentframe = tx;
1872                 tx->currentskinframe = tx->skinframes[0];
1873                 tx->currentmaterialflags = tx->basematerialflags;
1874         }
1875
1876         // sequence the animations
1877         for (i = 0;i < m->nummiptex;i++)
1878         {
1879                 tx = loadmodel->data_textures + i;
1880                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1881                         continue;
1882                 if (tx->anim_total[0] || tx->anim_total[1])
1883                         continue;       // already sequenced
1884
1885                 // find the number of frames in the animation
1886                 memset(anims, 0, sizeof(anims));
1887                 memset(altanims, 0, sizeof(altanims));
1888
1889                 for (j = i;j < m->nummiptex;j++)
1890                 {
1891                         tx2 = loadmodel->data_textures + j;
1892                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1893                                 continue;
1894
1895                         num = tx2->name[1];
1896                         if (num >= '0' && num <= '9')
1897                                 anims[num - '0'] = tx2;
1898                         else if (num >= 'a' && num <= 'j')
1899                                 altanims[num - 'a'] = tx2;
1900                         else
1901                                 Con_Printf("Bad animating texture %s\n", tx->name);
1902                 }
1903
1904                 max = altmax = 0;
1905                 for (j = 0;j < 10;j++)
1906                 {
1907                         if (anims[j])
1908                                 max = j + 1;
1909                         if (altanims[j])
1910                                 altmax = j + 1;
1911                 }
1912                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1913
1914                 incomplete = false;
1915                 for (j = 0;j < max;j++)
1916                 {
1917                         if (!anims[j])
1918                         {
1919                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1920                                 incomplete = true;
1921                         }
1922                 }
1923                 for (j = 0;j < altmax;j++)
1924                 {
1925                         if (!altanims[j])
1926                         {
1927                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1928                                 incomplete = true;
1929                         }
1930                 }
1931                 if (incomplete)
1932                         continue;
1933
1934                 if (altmax < 1)
1935                 {
1936                         // if there is no alternate animation, duplicate the primary
1937                         // animation into the alternate
1938                         altmax = max;
1939                         for (k = 0;k < 10;k++)
1940                                 altanims[k] = anims[k];
1941                 }
1942
1943                 // link together the primary animation
1944                 for (j = 0;j < max;j++)
1945                 {
1946                         tx2 = anims[j];
1947                         tx2->animated = true;
1948                         tx2->anim_total[0] = max;
1949                         tx2->anim_total[1] = altmax;
1950                         for (k = 0;k < 10;k++)
1951                         {
1952                                 tx2->anim_frames[0][k] = anims[k];
1953                                 tx2->anim_frames[1][k] = altanims[k];
1954                         }
1955                 }
1956
1957                 // if there really is an alternate anim...
1958                 if (anims[0] != altanims[0])
1959                 {
1960                         // link together the alternate animation
1961                         for (j = 0;j < altmax;j++)
1962                         {
1963                                 tx2 = altanims[j];
1964                                 tx2->animated = true;
1965                                 // the primary/alternate are reversed here
1966                                 tx2->anim_total[0] = altmax;
1967                                 tx2->anim_total[1] = max;
1968                                 for (k = 0;k < 10;k++)
1969                                 {
1970                                         tx2->anim_frames[0][k] = altanims[k];
1971                                         tx2->anim_frames[1][k] = anims[k];
1972                                 }
1973                         }
1974                 }
1975         }
1976 }
1977
1978 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1979 {
1980         int i;
1981         unsigned char *in, *out, *data, d;
1982         char litfilename[MAX_QPATH];
1983         char dlitfilename[MAX_QPATH];
1984         fs_offset_t filesize;
1985         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1986         {
1987                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1988                 for (i=0; i<l->filelen; i++)
1989                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1990         }
1991         else // LordHavoc: bsp version 29 (normal white lighting)
1992         {
1993                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1994                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1995                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1996                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1997                 strlcat (litfilename, ".lit", sizeof (litfilename));
1998                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1999                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
2000                 if (data)
2001                 {
2002                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
2003                         {
2004                                 i = LittleLong(((int *)data)[1]);
2005                                 if (i == 1)
2006                                 {
2007                                         if (developer_loading.integer)
2008                                                 Con_Printf("loaded %s\n", litfilename);
2009                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
2010                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
2011                                         Mem_Free(data);
2012                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
2013                                         if (data)
2014                                         {
2015                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
2016                                                 {
2017                                                         i = LittleLong(((int *)data)[1]);
2018                                                         if (i == 1)
2019                                                         {
2020                                                                 if (developer_loading.integer)
2021                                                                         Con_Printf("loaded %s\n", dlitfilename);
2022                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
2023                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
2024                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
2025                                                                 loadmodel->brushq3.deluxemapping = true;
2026                                                         }
2027                                                 }
2028                                                 Mem_Free(data);
2029                                                 data = NULL;
2030                                         }
2031                                         return;
2032                                 }
2033                                 else
2034                                         Con_Printf("Unknown .lit file version (%d)\n", i);
2035                         }
2036                         else if (filesize == 8)
2037                                 Con_Print("Empty .lit file, ignoring\n");
2038                         else
2039                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
2040                         if (data)
2041                         {
2042                                 Mem_Free(data);
2043                                 data = NULL;
2044                         }
2045                 }
2046                 // LordHavoc: oh well, expand the white lighting data
2047                 if (!l->filelen)
2048                         return;
2049                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
2050                 in = mod_base + l->fileofs;
2051                 out = loadmodel->brushq1.lightdata;
2052                 for (i = 0;i < l->filelen;i++)
2053                 {
2054                         d = *in++;
2055                         *out++ = d;
2056                         *out++ = d;
2057                         *out++ = d;
2058                 }
2059         }
2060 }
2061
2062 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
2063 {
2064         loadmodel->brushq1.num_compressedpvs = 0;
2065         loadmodel->brushq1.data_compressedpvs = NULL;
2066         if (!l->filelen)
2067                 return;
2068         loadmodel->brushq1.num_compressedpvs = l->filelen;
2069         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
2070         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
2071 }
2072
2073 // used only for HalfLife maps
2074 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
2075 {
2076         char key[128], value[4096];
2077         int i, j, k;
2078         if (!data)
2079                 return;
2080         if (!COM_ParseToken_Simple(&data, false, false))
2081                 return; // error
2082         if (com_token[0] != '{')
2083                 return; // error
2084         while (1)
2085         {
2086                 if (!COM_ParseToken_Simple(&data, false, false))
2087                         return; // error
2088                 if (com_token[0] == '}')
2089                         break; // end of worldspawn
2090                 if (com_token[0] == '_')
2091                         strlcpy(key, com_token + 1, sizeof(key));
2092                 else
2093                         strlcpy(key, com_token, sizeof(key));
2094                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
2095                         key[strlen(key)-1] = 0;
2096                 if (!COM_ParseToken_Simple(&data, false, false))
2097                         return; // error
2098                 dpsnprintf(value, sizeof(value), "%s", com_token);
2099                 if (!strcmp("wad", key)) // for HalfLife maps
2100                 {
2101                         if (loadmodel->brush.ishlbsp)
2102                         {
2103                                 j = 0;
2104                                 for (i = 0;i < (int)sizeof(value);i++)
2105                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
2106                                                 break;
2107                                 if (value[i])
2108                                 {
2109                                         for (;i < (int)sizeof(value);i++)
2110                                         {
2111                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
2112                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
2113                                                         j = i+1;
2114                                                 else if (value[i] == ';' || value[i] == 0)
2115                                                 {
2116                                                         k = value[i];
2117                                                         value[i] = 0;
2118                                                         W_LoadTextureWadFile(&value[j], false);
2119                                                         j = i+1;
2120                                                         if (!k)
2121                                                                 break;
2122                                                 }
2123                                         }
2124                                 }
2125                         }
2126                 }
2127         }
2128 }
2129
2130 static void Mod_Q1BSP_LoadEntities(lump_t *l)
2131 {
2132         loadmodel->brush.entities = NULL;
2133         if (!l->filelen)
2134                 return;
2135         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
2136         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
2137         loadmodel->brush.entities[l->filelen] = 0;
2138         if (loadmodel->brush.ishlbsp)
2139                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
2140 }
2141
2142
2143 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
2144 {
2145         dvertex_t       *in;
2146         mvertex_t       *out;
2147         int                     i, count;
2148
2149         in = (dvertex_t *)(mod_base + l->fileofs);
2150         if (l->filelen % sizeof(*in))
2151                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
2152         count = l->filelen / sizeof(*in);
2153         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2154
2155         loadmodel->brushq1.vertexes = out;
2156         loadmodel->brushq1.numvertexes = count;
2157
2158         for ( i=0 ; i<count ; i++, in++, out++)
2159         {
2160                 out->position[0] = LittleFloat(in->point[0]);
2161                 out->position[1] = LittleFloat(in->point[1]);
2162                 out->position[2] = LittleFloat(in->point[2]);
2163         }
2164 }
2165
2166 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
2167 // can be used for this
2168 // REMOVEME
2169 int SB_ReadInt (unsigned char **buffer)
2170 {
2171         int     i;
2172         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
2173         (*buffer) += 4;
2174         return i;
2175 }
2176
2177 // REMOVEME
2178 float SB_ReadFloat (unsigned char **buffer)
2179 {
2180         union
2181         {
2182                 int             i;
2183                 float   f;
2184         } u;
2185
2186         u.i = SB_ReadInt (buffer);
2187         return u.f;
2188 }
2189
2190 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
2191 {
2192         unsigned char           *index;
2193         dmodel_t        *out;
2194         int                     i, j, count;
2195
2196         index = (unsigned char *)(mod_base + l->fileofs);
2197         if (l->filelen % (48+4*hullinfo->filehulls))
2198                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
2199
2200         count = l->filelen / (48+4*hullinfo->filehulls);
2201         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
2202
2203         loadmodel->brushq1.submodels = out;
2204         loadmodel->brush.numsubmodels = count;
2205
2206         for (i = 0; i < count; i++, out++)
2207         {
2208         // spread out the mins / maxs by a pixel
2209                 out->mins[0] = SB_ReadFloat (&index) - 1;
2210                 out->mins[1] = SB_ReadFloat (&index) - 1;
2211                 out->mins[2] = SB_ReadFloat (&index) - 1;
2212                 out->maxs[0] = SB_ReadFloat (&index) + 1;
2213                 out->maxs[1] = SB_ReadFloat (&index) + 1;
2214                 out->maxs[2] = SB_ReadFloat (&index) + 1;
2215                 out->origin[0] = SB_ReadFloat (&index);
2216                 out->origin[1] = SB_ReadFloat (&index);
2217                 out->origin[2] = SB_ReadFloat (&index);
2218                 for (j = 0; j < hullinfo->filehulls; j++)
2219                         out->headnode[j] = SB_ReadInt (&index);
2220                 out->visleafs = SB_ReadInt (&index);
2221                 out->firstface = SB_ReadInt (&index);
2222                 out->numfaces = SB_ReadInt (&index);
2223         }
2224 }
2225
2226 static void Mod_Q1BSP_LoadEdges(lump_t *l)
2227 {
2228         dedge_t *in;
2229         medge_t *out;
2230         int     i, count;
2231
2232         in = (dedge_t *)(mod_base + l->fileofs);
2233         if (l->filelen % sizeof(*in))
2234                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
2235         count = l->filelen / sizeof(*in);
2236         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2237
2238         loadmodel->brushq1.edges = out;
2239         loadmodel->brushq1.numedges = count;
2240
2241         for ( i=0 ; i<count ; i++, in++, out++)
2242         {
2243                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
2244                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
2245                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
2246                 {
2247                         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);
2248                         if(!loadmodel->brushq1.numvertexes)
2249                                 Host_Error("Mod_Q1BSP_LoadEdges: %s has edges but no vertexes, cannot fix\n", loadmodel->name);
2250
2251                         out->v[0] = 0;
2252                         out->v[1] = 0;
2253                 }
2254         }
2255 }
2256
2257 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
2258 {
2259         texinfo_t *in;
2260         mtexinfo_t *out;
2261         int i, j, k, count, miptex;
2262
2263         in = (texinfo_t *)(mod_base + l->fileofs);
2264         if (l->filelen % sizeof(*in))
2265                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
2266         count = l->filelen / sizeof(*in);
2267         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2268
2269         loadmodel->brushq1.texinfo = out;
2270         loadmodel->brushq1.numtexinfo = count;
2271
2272         for (i = 0;i < count;i++, in++, out++)
2273         {
2274                 for (k = 0;k < 2;k++)
2275                         for (j = 0;j < 4;j++)
2276                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
2277
2278                 miptex = LittleLong(in->miptex);
2279                 out->flags = LittleLong(in->flags);
2280
2281                 out->texture = NULL;
2282                 if (loadmodel->data_textures)
2283                 {
2284                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
2285                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
2286                         else
2287                                 out->texture = loadmodel->data_textures + miptex;
2288                 }
2289                 if (out->flags & TEX_SPECIAL)
2290                 {
2291                         // if texture chosen is NULL or the shader needs a lightmap,
2292                         // force to notexture water shader
2293                         if (out->texture == NULL)
2294                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
2295                 }
2296                 else
2297                 {
2298                         // if texture chosen is NULL, force to notexture
2299                         if (out->texture == NULL)
2300                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
2301                 }
2302         }
2303 }
2304
2305 #if 0
2306 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2307 {
2308         int             i, j;
2309         float   *v;
2310
2311         mins[0] = mins[1] = mins[2] = 9999;
2312         maxs[0] = maxs[1] = maxs[2] = -9999;
2313         v = verts;
2314         for (i = 0;i < numverts;i++)
2315         {
2316                 for (j = 0;j < 3;j++, v++)
2317                 {
2318                         if (*v < mins[j])
2319                                 mins[j] = *v;
2320                         if (*v > maxs[j])
2321                                 maxs[j] = *v;
2322                 }
2323         }
2324 }
2325
2326 #define MAX_SUBDIVPOLYTRIANGLES 4096
2327 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2328
2329 static int subdivpolyverts, subdivpolytriangles;
2330 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2331 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2332
2333 static int subdivpolylookupvert(vec3_t v)
2334 {
2335         int i;
2336         for (i = 0;i < subdivpolyverts;i++)
2337                 if (subdivpolyvert[i][0] == v[0]
2338                  && subdivpolyvert[i][1] == v[1]
2339                  && subdivpolyvert[i][2] == v[2])
2340                         return i;
2341         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2342                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2343         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2344         return subdivpolyverts++;
2345 }
2346
2347 static void SubdividePolygon(int numverts, float *verts)
2348 {
2349         int             i, i1, i2, i3, f, b, c, p;
2350         vec3_t  mins, maxs, front[256], back[256];
2351         float   m, *pv, *cv, dist[256], frac;
2352
2353         if (numverts > 250)
2354                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2355
2356         BoundPoly(numverts, verts, mins, maxs);
2357
2358         for (i = 0;i < 3;i++)
2359         {
2360                 m = (mins[i] + maxs[i]) * 0.5;
2361                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2362                 if (maxs[i] - m < 8)
2363                         continue;
2364                 if (m - mins[i] < 8)
2365                         continue;
2366
2367                 // cut it
2368                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2369                         dist[c] = cv[i] - m;
2370
2371                 f = b = 0;
2372                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2373                 {
2374                         if (dist[p] >= 0)
2375                         {
2376                                 VectorCopy(pv, front[f]);
2377                                 f++;
2378                         }
2379                         if (dist[p] <= 0)
2380                         {
2381                                 VectorCopy(pv, back[b]);
2382                                 b++;
2383                         }
2384                         if (dist[p] == 0 || dist[c] == 0)
2385                                 continue;
2386                         if ((dist[p] > 0) != (dist[c] > 0) )
2387                         {
2388                                 // clip point
2389                                 frac = dist[p] / (dist[p] - dist[c]);
2390                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2391                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2392                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2393                                 f++;
2394                                 b++;
2395                         }
2396                 }
2397
2398                 SubdividePolygon(f, front[0]);
2399                 SubdividePolygon(b, back[0]);
2400                 return;
2401         }
2402
2403         i1 = subdivpolylookupvert(verts);
2404         i2 = subdivpolylookupvert(verts + 3);
2405         for (i = 2;i < numverts;i++)
2406         {
2407                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2408                 {
2409                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2410                         return;
2411                 }
2412
2413                 i3 = subdivpolylookupvert(verts + i * 3);
2414                 subdivpolyindex[subdivpolytriangles][0] = i1;
2415                 subdivpolyindex[subdivpolytriangles][1] = i2;
2416                 subdivpolyindex[subdivpolytriangles][2] = i3;
2417                 i2 = i3;
2418                 subdivpolytriangles++;
2419         }
2420 }
2421
2422 //Breaks a polygon up along axial 64 unit
2423 //boundaries so that turbulent and sky warps
2424 //can be done reasonably.
2425 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2426 {
2427         int i, j;
2428         surfvertex_t *v;
2429         surfmesh_t *mesh;
2430
2431         subdivpolytriangles = 0;
2432         subdivpolyverts = 0;
2433         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2434         if (subdivpolytriangles < 1)
2435                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2436
2437         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2438         mesh->num_vertices = subdivpolyverts;
2439         mesh->num_triangles = subdivpolytriangles;
2440         mesh->vertex = (surfvertex_t *)(mesh + 1);
2441         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2442         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2443
2444         for (i = 0;i < mesh->num_triangles;i++)
2445                 for (j = 0;j < 3;j++)
2446                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2447
2448         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2449         {
2450                 VectorCopy(subdivpolyvert[i], v->v);
2451                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2452                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2453         }
2454 }
2455 #endif
2456
2457 extern cvar_t gl_max_lightmapsize;
2458 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2459 {
2460         dface_t *in;
2461         msurface_t *surface;
2462         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples;
2463         float texmins[2], texmaxs[2], val;
2464         rtexture_t *lightmaptexture, *deluxemaptexture;
2465
2466         in = (dface_t *)(mod_base + l->fileofs);
2467         if (l->filelen % sizeof(*in))
2468                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2469         count = l->filelen / sizeof(*in);
2470         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2471         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2472
2473         loadmodel->num_surfaces = count;
2474
2475         loadmodel->brushq1.firstrender = true;
2476         loadmodel->brushq1.lightmapupdateflags = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*sizeof(unsigned char));
2477
2478         totalverts = 0;
2479         totaltris = 0;
2480         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2481         {
2482                 numedges = (unsigned short)LittleShort(in->numedges);
2483                 totalverts += numedges;
2484                 totaltris += numedges - 2;
2485         }
2486
2487         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2488
2489         lightmaptexture = NULL;
2490         deluxemaptexture = r_texture_blanknormalmap;
2491         lightmapnumber = 0;
2492         lightmapsize = bound(256, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d);
2493         totallightmapsamples = 0;
2494
2495         totalverts = 0;
2496         totaltris = 0;
2497         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2498         {
2499                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2500
2501                 // FIXME: validate edges, texinfo, etc?
2502                 firstedge = LittleLong(in->firstedge);
2503                 numedges = (unsigned short)LittleShort(in->numedges);
2504                 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)
2505                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2506                 i = (unsigned short)LittleShort(in->texinfo);
2507                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2508                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2509                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2510                 surface->texture = surface->lightmapinfo->texinfo->texture;
2511
2512                 planenum = (unsigned short)LittleShort(in->planenum);
2513                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2514                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2515
2516                 //surface->flags = surface->texture->flags;
2517                 //if (LittleShort(in->side))
2518                 //      surface->flags |= SURF_PLANEBACK;
2519                 //surface->plane = loadmodel->brush.data_planes + planenum;
2520
2521                 surface->num_firstvertex = totalverts;
2522                 surface->num_vertices = numedges;
2523                 surface->num_firsttriangle = totaltris;
2524                 surface->num_triangles = numedges - 2;
2525                 totalverts += numedges;
2526                 totaltris += numedges - 2;
2527
2528                 // convert edges back to a normal polygon
2529                 for (i = 0;i < surface->num_vertices;i++)
2530                 {
2531                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2532                         float s, t;
2533                         // note: the q1bsp format does not allow a 0 surfedge (it would have no negative counterpart)
2534                         if (lindex >= 0)
2535                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2536                         else
2537                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2538                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2539                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2540                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2541                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2542                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2543                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2544                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2545                 }
2546
2547                 for (i = 0;i < surface->num_triangles;i++)
2548                 {
2549                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2550                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2551                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2552                 }
2553
2554                 // compile additional data about the surface geometry
2555                 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);
2556                 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);
2557                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2558
2559                 // generate surface extents information
2560                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2561                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2562                 for (i = 1;i < surface->num_vertices;i++)
2563                 {
2564                         for (j = 0;j < 2;j++)
2565                         {
2566                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2567                                 texmins[j] = min(texmins[j], val);
2568                                 texmaxs[j] = max(texmaxs[j], val);
2569                         }
2570                 }
2571                 for (i = 0;i < 2;i++)
2572                 {
2573                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2574                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2575                 }
2576
2577                 smax = surface->lightmapinfo->extents[0] >> 4;
2578                 tmax = surface->lightmapinfo->extents[1] >> 4;
2579                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2580                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2581
2582                 // lighting info
2583                 for (i = 0;i < MAXLIGHTMAPS;i++)
2584                         surface->lightmapinfo->styles[i] = in->styles[i];
2585                 surface->lightmaptexture = NULL;
2586                 surface->deluxemaptexture = r_texture_blanknormalmap;
2587                 i = LittleLong(in->lightofs);
2588                 if (i == -1)
2589                 {
2590                         surface->lightmapinfo->samples = NULL;
2591 #if 1
2592                         // give non-lightmapped water a 1x white lightmap
2593                         if (surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2594                         {
2595                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2596                                 surface->lightmapinfo->styles[0] = 0;
2597                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2598                         }
2599 #endif
2600                 }
2601                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2602                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2603                 else // LordHavoc: white lighting (bsp version 29)
2604                 {
2605                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2606                         if (loadmodel->brushq1.nmaplightdata)
2607                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2608                 }
2609
2610                 // check if we should apply a lightmap to this
2611                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2612                 {
2613                         if (ssize > 256 || tsize > 256)
2614                                 Host_Error("Bad surface extents");
2615
2616                         if (lightmapsize < ssize)
2617                                 lightmapsize = ssize;
2618                         if (lightmapsize < tsize)
2619                                 lightmapsize = tsize;
2620
2621                         totallightmapsamples += ssize*tsize;
2622
2623                         // force lightmap upload on first time seeing the surface
2624                         //
2625                         // additionally this is used by the later code to see if a
2626                         // lightmap is needed on this surface (rather than duplicating the
2627                         // logic above)
2628                         loadmodel->brushq1.lightmapupdateflags[surfacenum] = true;
2629                         loadmodel->lit = true;
2630                 }
2631         }
2632
2633         // small maps (such as ammo boxes especially) don't need big lightmap
2634         // textures, so this code tries to guess a good size based on
2635         // totallightmapsamples (size of the lightmaps lump basically), as well as
2636         // trying to max out the size if there is a lot of lightmap data to store
2637         // additionally, never choose a lightmapsize that is smaller than the
2638         // largest surface encountered (as it would fail)
2639         i = lightmapsize;
2640         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < bound(128, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d)) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2641                 ;
2642
2643         // now that we've decided the lightmap texture size, we can do the rest
2644         if (cls.state != ca_dedicated)
2645         {
2646                 int stainmapsize = 0;
2647                 mod_alloclightmap_state_t allocState;
2648
2649                 Mod_AllocLightmap_Init(&allocState, lightmapsize, lightmapsize);
2650                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2651                 {
2652                         int i, iu, iv, lightmapx = 0, lightmapy = 0;
2653                         float u, v, ubase, vbase, uscale, vscale;
2654
2655                         if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2656                                 continue;
2657
2658                         smax = surface->lightmapinfo->extents[0] >> 4;
2659                         tmax = surface->lightmapinfo->extents[1] >> 4;
2660                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2661                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2662                         stainmapsize += ssize * tsize * 3;
2663
2664                         if (!lightmaptexture || !Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy))
2665                         {
2666                                 // allocate a texture pool if we need it
2667                                 if (loadmodel->texturepool == NULL)
2668                                         loadmodel->texturepool = R_AllocTexturePool();
2669                                 // could not find room, make a new lightmap
2670                                 loadmodel->brushq3.num_mergedlightmaps = lightmapnumber + 1;
2671                                 loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_lightmaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_lightmaps[0]));
2672                                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_deluxemaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_deluxemaps[0]));
2673                                 loadmodel->brushq3.data_lightmaps[lightmapnumber] = lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, -1, NULL);
2674                                 if (loadmodel->brushq1.nmaplightdata)
2675                                         loadmodel->brushq3.data_deluxemaps[lightmapnumber] = deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, -1, NULL);
2676                                 lightmapnumber++;
2677                                 Mod_AllocLightmap_Reset(&allocState);
2678                                 Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy);
2679                         }
2680                         surface->lightmaptexture = lightmaptexture;
2681                         surface->deluxemaptexture = deluxemaptexture;
2682                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2683                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2684
2685                         uscale = 1.0f / (float)lightmapsize;
2686                         vscale = 1.0f / (float)lightmapsize;
2687                         ubase = lightmapx * uscale;
2688                         vbase = lightmapy * vscale;
2689
2690                         for (i = 0;i < surface->num_vertices;i++)
2691                         {
2692                                 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);
2693                                 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);
2694                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2695                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2696                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2697                                 iu = (int) u;
2698                                 iv = (int) v;
2699                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2700                         }
2701                 }
2702
2703                 if (cl_stainmaps.integer)
2704                 {
2705                         // allocate stainmaps for permanent marks on walls and clear white
2706                         unsigned char *stainsamples = NULL;
2707                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2708                         memset(stainsamples, 255, stainmapsize);
2709                         // assign pointers
2710                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2711                         {
2712                                 if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2713                                         continue;
2714                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2715                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2716                                 surface->lightmapinfo->stainsamples = stainsamples;
2717                                 stainsamples += ssize * tsize * 3;
2718                         }
2719                 }
2720         }
2721
2722         // generate ushort elements array if possible
2723         if (loadmodel->surfmesh.data_element3s)
2724                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2725                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2726 }
2727
2728 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2729 {
2730         //if (node->parent)
2731         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2732         node->parent = parent;
2733         if (node->plane)
2734         {
2735                 // this is a node, recurse to children
2736                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2737                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2738                 // combine supercontents of children
2739                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2740         }
2741         else
2742         {
2743                 int j;
2744                 mleaf_t *leaf = (mleaf_t *)node;
2745                 // if this is a leaf, calculate supercontents mask from all collidable
2746                 // primitives in the leaf (brushes and collision surfaces)
2747                 // also flag if the leaf contains any collision surfaces
2748                 leaf->combinedsupercontents = 0;
2749                 // combine the supercontents values of all brushes in this leaf
2750                 for (j = 0;j < leaf->numleafbrushes;j++)
2751                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2752                 // check if this leaf contains any collision surfaces (q3 patches)
2753                 for (j = 0;j < leaf->numleafsurfaces;j++)
2754                 {
2755                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2756                         if (surface->num_collisiontriangles)
2757                         {
2758                                 leaf->containscollisionsurfaces = true;
2759                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2760                         }
2761                 }
2762         }
2763 }
2764
2765 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2766 {
2767         int                     i, j, count, p;
2768         dnode_t         *in;
2769         mnode_t         *out;
2770
2771         in = (dnode_t *)(mod_base + l->fileofs);
2772         if (l->filelen % sizeof(*in))
2773                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2774         count = l->filelen / sizeof(*in);
2775         if (count == 0)
2776                 Host_Error("Mod_Q1BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
2777         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2778
2779         loadmodel->brush.data_nodes = out;
2780         loadmodel->brush.num_nodes = count;
2781
2782         for ( i=0 ; i<count ; i++, in++, out++)
2783         {
2784                 for (j=0 ; j<3 ; j++)
2785                 {
2786                         out->mins[j] = LittleShort(in->mins[j]);
2787                         out->maxs[j] = LittleShort(in->maxs[j]);
2788                 }
2789
2790                 p = LittleLong(in->planenum);
2791                 out->plane = loadmodel->brush.data_planes + p;
2792
2793                 out->firstsurface = (unsigned short)LittleShort(in->firstface);
2794                 out->numsurfaces = (unsigned short)LittleShort(in->numfaces);
2795
2796                 for (j=0 ; j<2 ; j++)
2797                 {
2798                         // LordHavoc: this code supports broken bsp files produced by
2799                         // arguire qbsp which can produce more than 32768 nodes, any value
2800                         // below count is assumed to be a node number, any other value is
2801                         // assumed to be a leaf number
2802                         p = (unsigned short)LittleShort(in->children[j]);
2803                         if (p < count)
2804                         {
2805                                 if (p < loadmodel->brush.num_nodes)
2806                                         out->children[j] = loadmodel->brush.data_nodes + p;
2807                                 else
2808                                 {
2809                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2810                                         // map it to the solid leaf
2811                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2812                                 }
2813                         }
2814                         else
2815                         {
2816                                 // note this uses 65535 intentionally, -1 is leaf 0
2817                                 p = 65535 - p;
2818                                 if (p < loadmodel->brush.num_leafs)
2819                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2820                                 else
2821                                 {
2822                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2823                                         // map it to the solid leaf
2824                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2825                                 }
2826                         }
2827                 }
2828         }
2829
2830         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2831 }
2832
2833 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2834 {
2835         dleaf_t *in;
2836         mleaf_t *out;
2837         int i, j, count, p;
2838
2839         in = (dleaf_t *)(mod_base + l->fileofs);
2840         if (l->filelen % sizeof(*in))
2841                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2842         count = l->filelen / sizeof(*in);
2843         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2844
2845         loadmodel->brush.data_leafs = out;
2846         loadmodel->brush.num_leafs = count;
2847         // get visleafs from the submodel data
2848         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2849         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2850         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2851         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2852
2853         for ( i=0 ; i<count ; i++, in++, out++)
2854         {
2855                 for (j=0 ; j<3 ; j++)
2856                 {
2857                         out->mins[j] = LittleShort(in->mins[j]);
2858                         out->maxs[j] = LittleShort(in->maxs[j]);
2859                 }
2860
2861                 // FIXME: this function could really benefit from some error checking
2862
2863                 out->contents = LittleLong(in->contents);
2864
2865                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + (unsigned short)LittleShort(in->firstmarksurface);
2866                 out->numleafsurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
2867                 if ((unsigned short)LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2868                 {
2869                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2870                         out->firstleafsurface = NULL;
2871                         out->numleafsurfaces = 0;
2872                 }
2873
2874                 out->clusterindex = i - 1;
2875                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2876                         out->clusterindex = -1;
2877
2878                 p = LittleLong(in->visofs);
2879                 // ignore visofs errors on leaf 0 (solid)
2880                 if (p >= 0 && out->clusterindex >= 0)
2881                 {
2882                         if (p >= loadmodel->brushq1.num_compressedpvs)
2883                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2884                         else
2885                                 Mod_Q1BSP_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);
2886                 }
2887
2888                 for (j = 0;j < 4;j++)
2889                         out->ambient_sound_level[j] = in->ambient_level[j];
2890
2891                 // FIXME: Insert caustics here
2892         }
2893 }
2894
2895 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2896 {
2897         int i, j;
2898         mleaf_t *leaf;
2899         const unsigned char *pvs;
2900         // if there's no vis data, assume supported (because everything is visible all the time)
2901         if (!loadmodel->brush.data_pvsclusters)
2902                 return true;
2903         // check all liquid leafs to see if they can see into empty leafs, if any
2904         // can we can assume this map supports r_wateralpha
2905         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2906         {
2907                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
2908                 {
2909                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2910                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2911                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2912                                         return true;
2913                 }
2914         }
2915         return false;
2916 }
2917
2918 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2919 {
2920         dclipnode_t *in;
2921         mclipnode_t *out;
2922         int                     i, count;
2923         hull_t          *hull;
2924
2925         in = (dclipnode_t *)(mod_base + l->fileofs);
2926         if (l->filelen % sizeof(*in))
2927                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2928         count = l->filelen / sizeof(*in);
2929         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2930
2931         loadmodel->brushq1.clipnodes = out;
2932         loadmodel->brushq1.numclipnodes = count;
2933
2934         for (i = 1; i < MAX_MAP_HULLS; i++)
2935         {
2936                 hull = &loadmodel->brushq1.hulls[i];
2937                 hull->clipnodes = out;
2938                 hull->firstclipnode = 0;
2939                 hull->lastclipnode = count-1;
2940                 hull->planes = loadmodel->brush.data_planes;
2941                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2942                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2943                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2944                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2945                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2946                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2947                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2948         }
2949
2950         for (i=0 ; i<count ; i++, out++, in++)
2951         {
2952                 out->planenum = LittleLong(in->planenum);
2953                 // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
2954                 out->children[0] = (unsigned short)LittleShort(in->children[0]);
2955                 out->children[1] = (unsigned short)LittleShort(in->children[1]);
2956                 if (out->children[0] >= count)
2957                         out->children[0] -= 65536;
2958                 if (out->children[1] >= count)
2959                         out->children[1] -= 65536;
2960                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2961                         Host_Error("Corrupt clipping hull(out of range planenum)");
2962         }
2963 }
2964
2965 //Duplicate the drawing hull structure as a clipping hull
2966 static void Mod_Q1BSP_MakeHull0(void)
2967 {
2968         mnode_t         *in;
2969         mclipnode_t *out;
2970         int                     i;
2971         hull_t          *hull;
2972
2973         hull = &loadmodel->brushq1.hulls[0];
2974
2975         in = loadmodel->brush.data_nodes;
2976         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
2977
2978         hull->clipnodes = out;
2979         hull->firstclipnode = 0;
2980         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2981         hull->planes = loadmodel->brush.data_planes;
2982
2983         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2984         {
2985                 out->planenum = in->plane - loadmodel->brush.data_planes;
2986                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2987                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2988         }
2989 }
2990
2991 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2992 {
2993         int i, j;
2994         short *in;
2995
2996         in = (short *)(mod_base + l->fileofs);
2997         if (l->filelen % sizeof(*in))
2998                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2999         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
3000         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
3001
3002         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
3003         {
3004                 j = (unsigned short) LittleShort(in[i]);
3005                 if (j >= loadmodel->num_surfaces)
3006                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
3007                 loadmodel->brush.data_leafsurfaces[i] = j;
3008         }
3009 }
3010
3011 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
3012 {
3013         int             i;
3014         int             *in;
3015
3016         in = (int *)(mod_base + l->fileofs);
3017         if (l->filelen % sizeof(*in))
3018                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
3019         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
3020         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
3021
3022         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
3023                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
3024 }
3025
3026
3027 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
3028 {
3029         int                     i;
3030         mplane_t        *out;
3031         dplane_t        *in;
3032
3033         in = (dplane_t *)(mod_base + l->fileofs);
3034         if (l->filelen % sizeof(*in))
3035                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
3036
3037         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
3038         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
3039
3040         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
3041         {
3042                 out->normal[0] = LittleFloat(in->normal[0]);
3043                 out->normal[1] = LittleFloat(in->normal[1]);
3044                 out->normal[2] = LittleFloat(in->normal[2]);
3045                 out->dist = LittleFloat(in->dist);
3046
3047                 PlaneClassify(out);
3048         }
3049 }
3050
3051 static void Mod_Q1BSP_LoadMapBrushes(void)
3052 {
3053 #if 0
3054 // unfinished
3055         int submodel, numbrushes;
3056         qboolean firstbrush;
3057         char *text, *maptext;
3058         char mapfilename[MAX_QPATH];
3059         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
3060         strlcat (mapfilename, ".map", sizeof (mapfilename));
3061         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
3062         if (!maptext)
3063                 return;
3064         text = maptext;
3065         if (!COM_ParseToken_Simple(&data, false, false))
3066                 return; // error
3067         submodel = 0;
3068         for (;;)
3069         {
3070                 if (!COM_ParseToken_Simple(&data, false, false))
3071                         break;
3072                 if (com_token[0] != '{')
3073                         return; // error
3074                 // entity
3075                 firstbrush = true;
3076                 numbrushes = 0;
3077                 maxbrushes = 256;
3078                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
3079                 for (;;)
3080                 {
3081                         if (!COM_ParseToken_Simple(&data, false, false))
3082                                 return; // error
3083                         if (com_token[0] == '}')
3084                                 break; // end of entity
3085                         if (com_token[0] == '{')
3086                         {
3087                                 // brush
3088                                 if (firstbrush)
3089                                 {
3090                                         if (submodel)
3091                                         {
3092                                                 if (submodel > loadmodel->brush.numsubmodels)
3093                                                 {
3094                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
3095                                                         model = NULL;
3096                                                 }
3097                                                 else
3098                                                         model = loadmodel->brush.submodels[submodel];
3099                                         }
3100                                         else
3101                                                 model = loadmodel;
3102                                 }
3103                                 for (;;)
3104                                 {
3105                                         if (!COM_ParseToken_Simple(&data, false, false))
3106                                                 return; // error
3107                                         if (com_token[0] == '}')
3108                                                 break; // end of brush
3109                                         // each brush face should be this format:
3110                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
3111                                         // FIXME: support hl .map format
3112                                         for (pointnum = 0;pointnum < 3;pointnum++)
3113                                         {
3114                                                 COM_ParseToken_Simple(&data, false, false);
3115                                                 for (componentnum = 0;componentnum < 3;componentnum++)
3116                                                 {
3117                                                         COM_ParseToken_Simple(&data, false, false);
3118                                                         point[pointnum][componentnum] = atof(com_token);
3119                                                 }
3120                                                 COM_ParseToken_Simple(&data, false, false);
3121                                         }
3122                                         COM_ParseToken_Simple(&data, false, false);
3123                                         strlcpy(facetexture, com_token, sizeof(facetexture));
3124                                         COM_ParseToken_Simple(&data, false, false);
3125                                         //scroll_s = atof(com_token);
3126                                         COM_ParseToken_Simple(&data, false, false);
3127                                         //scroll_t = atof(com_token);
3128                                         COM_ParseToken_Simple(&data, false, false);
3129                                         //rotate = atof(com_token);
3130                                         COM_ParseToken_Simple(&data, false, false);
3131                                         //scale_s = atof(com_token);
3132                                         COM_ParseToken_Simple(&data, false, false);
3133                                         //scale_t = atof(com_token);
3134                                         TriangleNormal(point[0], point[1], point[2], planenormal);
3135                                         VectorNormalizeDouble(planenormal);
3136                                         planedist = DotProduct(point[0], planenormal);
3137                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
3138                                 }
3139                                 continue;
3140                         }
3141                 }
3142         }
3143 #endif
3144 }
3145
3146
3147 #define MAX_PORTALPOINTS 64
3148
3149 typedef struct portal_s
3150 {
3151         mplane_t plane;
3152         mnode_t *nodes[2];              // [0] = front side of plane
3153         struct portal_s *next[2];
3154         int numpoints;
3155         double points[3*MAX_PORTALPOINTS];
3156         struct portal_s *chain; // all portals are linked into a list
3157 }
3158 portal_t;
3159
3160 static memexpandablearray_t portalarray;
3161
3162 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
3163 {
3164         // process only nodes (leafs already had their box calculated)
3165         if (!node->plane)
3166                 return;
3167
3168         // calculate children first
3169         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
3170         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
3171
3172         // make combined bounding box from children
3173         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
3174         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
3175         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
3176         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
3177         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
3178         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
3179 }
3180
3181 static void Mod_Q1BSP_FinalizePortals(void)
3182 {
3183         int i, j, numportals, numpoints, portalindex, portalrange = Mem_ExpandableArray_IndexRange(&portalarray);
3184         portal_t *p;
3185         mportal_t *portal;
3186         mvertex_t *point;
3187         mleaf_t *leaf, *endleaf;
3188
3189         // tally up portal and point counts and recalculate bounding boxes for all
3190         // leafs (because qbsp is very sloppy)
3191         leaf = loadmodel->brush.data_leafs;
3192         endleaf = leaf + loadmodel->brush.num_leafs;
3193         if (mod_recalculatenodeboxes.integer)
3194         {
3195                 for (;leaf < endleaf;leaf++)
3196                 {
3197                         VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
3198                         VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
3199                 }
3200         }
3201         numportals = 0;
3202         numpoints = 0;
3203         for (portalindex = 0;portalindex < portalrange;portalindex++)
3204         {
3205                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
3206                 if (!p)
3207                         continue;
3208                 // note: this check must match the one below or it will usually corrupt memory
3209                 // 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
3210                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3211                 {
3212                         numportals += 2;
3213                         numpoints += p->numpoints * 2;
3214                 }
3215         }
3216         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
3217         loadmodel->brush.num_portals = numportals;
3218         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
3219         loadmodel->brush.num_portalpoints = numpoints;
3220         // clear all leaf portal chains
3221         for (i = 0;i < loadmodel->brush.num_leafs;i++)
3222                 loadmodel->brush.data_leafs[i].portals = NULL;
3223         // process all portals in the global portal chain, while freeing them
3224         portal = loadmodel->brush.data_portals;
3225         point = loadmodel->brush.data_portalpoints;
3226         for (portalindex = 0;portalindex < portalrange;portalindex++)
3227         {
3228                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
3229                 if (!p)
3230                         continue;
3231                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
3232                 {
3233                         // note: this check must match the one above or it will usually corrupt memory
3234                         // 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
3235                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3236                         {
3237                                 // first make the back to front portal(forward portal)
3238                                 portal->points = point;
3239                                 portal->numpoints = p->numpoints;
3240                                 portal->plane.dist = p->plane.dist;
3241                                 VectorCopy(p->plane.normal, portal->plane.normal);
3242                                 portal->here = (mleaf_t *)p->nodes[1];
3243                                 portal->past = (mleaf_t *)p->nodes[0];
3244                                 // copy points
3245                                 for (j = 0;j < portal->numpoints;j++)
3246                                 {
3247                                         VectorCopy(p->points + j*3, point->position);
3248                                         point++;
3249                                 }
3250                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3251                                 PlaneClassify(&portal->plane);
3252
3253                                 // link into leaf's portal chain
3254                                 portal->next = portal->here->portals;
3255                                 portal->here->portals = portal;
3256
3257                                 // advance to next portal
3258                                 portal++;
3259
3260                                 // then make the front to back portal(backward portal)
3261                                 portal->points = point;
3262                                 portal->numpoints = p->numpoints;
3263                                 portal->plane.dist = -p->plane.dist;
3264                                 VectorNegate(p->plane.normal, portal->plane.normal);
3265                                 portal->here = (mleaf_t *)p->nodes[0];
3266                                 portal->past = (mleaf_t *)p->nodes[1];
3267                                 // copy points
3268                                 for (j = portal->numpoints - 1;j >= 0;j--)
3269                                 {
3270                                         VectorCopy(p->points + j*3, point->position);
3271                                         point++;
3272                                 }
3273                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3274                                 PlaneClassify(&portal->plane);
3275
3276                                 // link into leaf's portal chain
3277                                 portal->next = portal->here->portals;
3278                                 portal->here->portals = portal;
3279
3280                                 // advance to next portal
3281                                 portal++;
3282                         }
3283                         // add the portal's polygon points to the leaf bounding boxes
3284                         if (mod_recalculatenodeboxes.integer)
3285                         {
3286                                 for (i = 0;i < 2;i++)
3287                                 {
3288                                         leaf = (mleaf_t *)p->nodes[i];
3289                                         for (j = 0;j < p->numpoints;j++)
3290                                         {
3291                                                 if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3292                                                 if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3293                                                 if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3294                                                 if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3295                                                 if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3296                                                 if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3297                                         }
3298                                 }
3299                         }
3300                 }
3301         }
3302         // now recalculate the node bounding boxes from the leafs
3303         if (mod_recalculatenodeboxes.integer)
3304                 Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3305 }
3306
3307 /*
3308 =============
3309 AddPortalToNodes
3310 =============
3311 */
3312 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
3313 {
3314         if (!front)
3315                 Host_Error("AddPortalToNodes: NULL front node");
3316         if (!back)
3317                 Host_Error("AddPortalToNodes: NULL back node");
3318         if (p->nodes[0] || p->nodes[1])
3319                 Host_Error("AddPortalToNodes: already included");
3320         // 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
3321
3322         p->nodes[0] = front;
3323         p->next[0] = (portal_t *)front->portals;
3324         front->portals = (mportal_t *)p;
3325
3326         p->nodes[1] = back;
3327         p->next[1] = (portal_t *)back->portals;
3328         back->portals = (mportal_t *)p;
3329 }
3330
3331 /*
3332 =============
3333 RemovePortalFromNode
3334 =============
3335 */
3336 static void RemovePortalFromNodes(portal_t *portal)
3337 {
3338         int i;
3339         mnode_t *node;
3340         void **portalpointer;
3341         portal_t *t;
3342         for (i = 0;i < 2;i++)
3343         {
3344                 node = portal->nodes[i];
3345
3346                 portalpointer = (void **) &node->portals;
3347                 while (1)
3348                 {
3349                         t = (portal_t *)*portalpointer;
3350                         if (!t)
3351                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
3352
3353                         if (t == portal)
3354                         {
3355                                 if (portal->nodes[0] == node)
3356                                 {
3357                                         *portalpointer = portal->next[0];
3358                                         portal->nodes[0] = NULL;
3359                                 }
3360                                 else if (portal->nodes[1] == node)
3361                                 {
3362                                         *portalpointer = portal->next[1];
3363                                         portal->nodes[1] = NULL;
3364                                 }
3365                                 else
3366                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3367                                 break;
3368                         }
3369
3370                         if (t->nodes[0] == node)
3371                                 portalpointer = (void **) &t->next[0];
3372                         else if (t->nodes[1] == node)
3373                                 portalpointer = (void **) &t->next[1];
3374                         else
3375                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3376                 }
3377         }
3378 }
3379
3380 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
3381 static double *portalpointsbuffer;
3382 static int portalpointsbufferoffset;
3383 static int portalpointsbuffersize;
3384 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
3385 {
3386         int i, side;
3387         mnode_t *front, *back, *other_node;
3388         mplane_t clipplane, *plane;
3389         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3390         int numfrontpoints, numbackpoints;
3391         double *frontpoints, *backpoints;
3392
3393         // if a leaf, we're done
3394         if (!node->plane)
3395                 return;
3396
3397         // get some space for our clipping operations to use
3398         if (portalpointsbuffersize < portalpointsbufferoffset + 6*MAX_PORTALPOINTS)
3399         {
3400                 portalpointsbuffersize = portalpointsbufferoffset * 2;
3401                 portalpointsbuffer = (double *)Mem_Realloc(loadmodel->mempool, portalpointsbuffer, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3402         }
3403         frontpoints = portalpointsbuffer + portalpointsbufferoffset;
3404         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3405         backpoints = portalpointsbuffer + portalpointsbufferoffset;
3406         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3407
3408         plane = node->plane;
3409
3410         front = node->children[0];
3411         back = node->children[1];
3412         if (front == back)
3413                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3414
3415         // create the new portal by generating a polygon for the node plane,
3416         // and clipping it by all of the other portals(which came from nodes above this one)
3417         nodeportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3418         nodeportal->plane = *plane;
3419
3420         // 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)
3421         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);
3422         nodeportal->numpoints = 4;
3423         side = 0;       // shut up compiler warning
3424         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3425         {
3426                 clipplane = portal->plane;
3427                 if (portal->nodes[0] == portal->nodes[1])
3428                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3429                 if (portal->nodes[0] == node)
3430                         side = 0;
3431                 else if (portal->nodes[1] == node)
3432                 {
3433                         clipplane.dist = -clipplane.dist;
3434                         VectorNegate(clipplane.normal, clipplane.normal);
3435                         side = 1;
3436                 }
3437                 else
3438                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3439
3440                 for (i = 0;i < nodeportal->numpoints*3;i++)
3441                         frontpoints[i] = nodeportal->points[i];
3442                 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);
3443                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3444                         break;
3445         }
3446
3447         if (nodeportal->numpoints < 3)
3448         {
3449                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3450                 nodeportal->numpoints = 0;
3451         }
3452         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3453         {
3454                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3455                 nodeportal->numpoints = 0;
3456         }
3457
3458         AddPortalToNodes(nodeportal, front, back);
3459
3460         // split the portals of this node along this node's plane and assign them to the children of this node
3461         // (migrating the portals downward through the tree)
3462         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3463         {
3464                 if (portal->nodes[0] == portal->nodes[1])
3465                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3466                 if (portal->nodes[0] == node)
3467                         side = 0;
3468                 else if (portal->nodes[1] == node)
3469                         side = 1;
3470                 else
3471                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3472                 nextportal = portal->next[side];
3473                 if (!portal->numpoints)
3474                         continue;
3475
3476                 other_node = portal->nodes[!side];
3477                 RemovePortalFromNodes(portal);
3478
3479                 // cut the portal into two portals, one on each side of the node plane
3480                 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);
3481
3482                 if (!numfrontpoints)
3483                 {
3484                         if (side == 0)
3485                                 AddPortalToNodes(portal, back, other_node);
3486                         else
3487                                 AddPortalToNodes(portal, other_node, back);
3488                         continue;
3489                 }
3490                 if (!numbackpoints)
3491                 {
3492                         if (side == 0)
3493                                 AddPortalToNodes(portal, front, other_node);
3494                         else
3495                                 AddPortalToNodes(portal, other_node, front);
3496                         continue;
3497                 }
3498
3499                 // the portal is split
3500                 splitportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3501                 temp = splitportal->chain;
3502                 *splitportal = *portal;
3503                 splitportal->chain = temp;
3504                 for (i = 0;i < numbackpoints*3;i++)
3505                         splitportal->points[i] = backpoints[i];
3506                 splitportal->numpoints = numbackpoints;
3507                 for (i = 0;i < numfrontpoints*3;i++)
3508                         portal->points[i] = frontpoints[i];
3509                 portal->numpoints = numfrontpoints;
3510
3511                 if (side == 0)
3512                 {
3513                         AddPortalToNodes(portal, front, other_node);
3514                         AddPortalToNodes(splitportal, back, other_node);
3515                 }
3516                 else
3517                 {
3518                         AddPortalToNodes(portal, other_node, front);
3519                         AddPortalToNodes(splitportal, other_node, back);
3520                 }
3521         }
3522
3523         Mod_Q1BSP_RecursiveNodePortals(front);
3524         Mod_Q1BSP_RecursiveNodePortals(back);
3525
3526         portalpointsbufferoffset -= 6*MAX_PORTALPOINTS;
3527 }
3528
3529 static void Mod_Q1BSP_MakePortals(void)
3530 {
3531         Mem_ExpandableArray_NewArray(&portalarray, loadmodel->mempool, sizeof(portal_t), 1020*1024/sizeof(portal_t));
3532         portalpointsbufferoffset = 0;
3533         portalpointsbuffersize = 6*MAX_PORTALPOINTS*128;
3534         portalpointsbuffer = (double *)Mem_Alloc(loadmodel->mempool, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3535         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3536         Mem_Free(portalpointsbuffer);
3537         portalpointsbuffer = NULL;
3538         portalpointsbufferoffset = 0;
3539         portalpointsbuffersize = 0;
3540         Mod_Q1BSP_FinalizePortals();
3541         Mem_ExpandableArray_FreeArray(&portalarray);
3542 }
3543
3544 //Returns PVS data for a given point
3545 //(note: can return NULL)
3546 static unsigned char *Mod_Q1BSP_GetPVS(dp_model_t *model, const vec3_t p)
3547 {
3548         mnode_t *node;
3549         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
3550         while (node->plane)
3551                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3552         if (((mleaf_t *)node)->clusterindex >= 0)
3553                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3554         else
3555                 return NULL;
3556 }
3557
3558 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3559 {
3560         while (node->plane)
3561         {
3562                 float d = PlaneDiff(org, node->plane);
3563                 if (d > radius)
3564                         node = node->children[0];
3565                 else if (d < -radius)
3566                         node = node->children[1];
3567                 else
3568                 {
3569                         // go down both sides
3570                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3571                         node = node->children[1];
3572                 }
3573         }
3574         // if this leaf is in a cluster, accumulate the pvs bits
3575         if (((mleaf_t *)node)->clusterindex >= 0)
3576         {
3577                 int i;
3578                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3579                 for (i = 0;i < pvsbytes;i++)
3580                         pvsbuffer[i] |= pvs[i];
3581         }
3582 }
3583
3584 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3585 //of the given point.
3586 static int Mod_Q1BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3587 {
3588         int bytes = model->brush.num_pvsclusterbytes;
3589         bytes = min(bytes, pvsbufferlength);
3590         if (r_novis.integer || r_trippy.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3591         {
3592                 memset(pvsbuffer, 0xFF, bytes);
3593                 return bytes;
3594         }
3595         if (!merge)
3596                 memset(pvsbuffer, 0, bytes);
3597         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
3598         return bytes;
3599 }
3600
3601 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3602 {
3603         vec3_t size;
3604         const hull_t *hull;
3605
3606         VectorSubtract(inmaxs, inmins, size);
3607         if (cmodel->brush.ishlbsp)
3608         {
3609                 if (size[0] < 3)
3610                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3611                 else if (size[0] <= 32)
3612                 {
3613                         if (size[2] < 54) // pick the nearest of 36 or 72
3614                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3615                         else
3616                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3617                 }
3618                 else
3619                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3620         }
3621         else
3622         {
3623                 if (size[0] < 3)
3624                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3625                 else if (size[0] <= 32)
3626                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3627                 else
3628                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3629         }
3630         VectorCopy(inmins, outmins);
3631         VectorAdd(inmins, hull->clip_size, outmaxs);
3632 }
3633
3634 static int Mod_Q1BSP_CreateShadowMesh(dp_model_t *mod)
3635 {
3636         int j;
3637         int numshadowmeshtriangles = 0;
3638         msurface_t *surface;
3639         if (cls.state == ca_dedicated)
3640                 return 0;
3641         // make a single combined shadow mesh to allow optimized shadow volume creation
3642
3643         for (j = 0, surface = mod->data_surfaces;j < mod->num_surfaces;j++, surface++)
3644         {
3645                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3646                 numshadowmeshtriangles += surface->num_triangles;
3647         }
3648         mod->brush.shadowmesh = Mod_ShadowMesh_Begin(mod->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3649         for (j = 0, surface = mod->data_surfaces;j < mod->num_surfaces;j++, surface++)
3650                 if (surface->num_triangles > 0)
3651                         Mod_ShadowMesh_AddMesh(mod->mempool, mod->brush.shadowmesh, NULL, NULL, NULL, mod->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (mod->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
3652         mod->brush.shadowmesh = Mod_ShadowMesh_Finish(mod->mempool, mod->brush.shadowmesh, false, r_enableshadowvolumes.integer != 0, false);
3653         if (mod->brush.shadowmesh && mod->brush.shadowmesh->neighbor3i)
3654                 Mod_BuildTriangleNeighbors(mod->brush.shadowmesh->neighbor3i, mod->brush.shadowmesh->element3i, mod->brush.shadowmesh->numtriangles);
3655
3656         return numshadowmeshtriangles;
3657 }
3658
3659 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);
3660
3661 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3662 {
3663         int i, j, k;
3664         dheader_t *header;
3665         dmodel_t *bm;
3666         float dist, modelyawradius, modelradius;
3667         msurface_t *surface;
3668         hullinfo_t hullinfo;
3669         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3670         model_brush_lightstyleinfo_t styleinfo[256];
3671         unsigned char *datapointer;
3672
3673         mod->modeldatatypestring = "Q1BSP";
3674
3675         mod->type = mod_brushq1;
3676
3677         header = (dheader_t *)buffer;
3678
3679         i = LittleLong(header->version);
3680         if (i != BSPVERSION && i != 30)
3681                 Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3682         mod->brush.ishlbsp = i == 30;
3683
3684 // fill in hull info
3685         VectorClear (hullinfo.hullsizes[0][0]);
3686         VectorClear (hullinfo.hullsizes[0][1]);
3687         if (mod->brush.ishlbsp)
3688         {
3689                 mod->modeldatatypestring = "HLBSP";
3690
3691                 hullinfo.filehulls = 4;
3692                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3693                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3694                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3695                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3696                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3697                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3698         }
3699         else
3700         {
3701                 hullinfo.filehulls = 4;
3702                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3703                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3704                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3705                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3706         }
3707
3708 // read lumps
3709         mod_base = (unsigned char*)buffer;
3710         for (i = 0; i < HEADER_LUMPS; i++)
3711         {
3712                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3713                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3714         }
3715
3716         mod->soundfromcenter = true;
3717         mod->TraceBox = Mod_Q1BSP_TraceBox;
3718         if (sv_gameplayfix_q1bsptracelinereportstexture.integer)
3719                 mod->TraceLine = Mod_Q1BSP_TraceLineAgainstSurfaces; // LordHavoc: use the surface-hitting version of TraceLine in all cases
3720         else
3721                 mod->TraceLine = Mod_Q1BSP_TraceLine;
3722         mod->TracePoint = Mod_Q1BSP_TracePoint;
3723         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3724         mod->TraceLineAgainstSurfaces = Mod_Q1BSP_TraceLineAgainstSurfaces;
3725         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3726         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3727         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3728         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3729         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3730         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3731         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3732         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3733         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3734         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3735         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3736         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3737         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3738         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3739         mod->Draw = R_Q1BSP_Draw;
3740         mod->DrawDepth = R_Q1BSP_DrawDepth;
3741         mod->DrawDebug = R_Q1BSP_DrawDebug;
3742         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
3743         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3744         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
3745         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
3746         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3747         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3748         mod->DrawLight = R_Q1BSP_DrawLight;
3749
3750 // load into heap
3751
3752         mod->brush.qw_md4sum = 0;
3753         mod->brush.qw_md4sum2 = 0;
3754         for (i = 0;i < HEADER_LUMPS;i++)
3755         {
3756                 int temp;
3757                 if (i == LUMP_ENTITIES)
3758                         continue;
3759                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3760                 mod->brush.qw_md4sum ^= LittleLong(temp);
3761                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3762                         continue;
3763                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3764                 mod->brush.qw_md4sum2 ^= LittleLong(temp);
3765         }
3766
3767         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3768         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3769         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3770         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3771         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3772         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3773         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3774         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3775         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3776         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3777         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3778         // load submodels before leafs because they contain the number of vis leafs
3779         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3780         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3781         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3782         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3783
3784         // check if the map supports transparent water rendering
3785         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3786
3787         if (mod->brushq1.data_compressedpvs)
3788                 Mem_Free(mod->brushq1.data_compressedpvs);
3789         mod->brushq1.data_compressedpvs = NULL;
3790         mod->brushq1.num_compressedpvs = 0;
3791
3792         Mod_Q1BSP_MakeHull0();
3793         if (mod_bsp_portalize.integer)
3794                 Mod_Q1BSP_MakePortals();
3795
3796         mod->numframes = 2;             // regular and alternate animation
3797         mod->numskins = 1;
3798
3799         // make a single combined shadow mesh to allow optimized shadow volume creation
3800         Mod_Q1BSP_CreateShadowMesh(loadmodel);
3801
3802         if (loadmodel->brush.numsubmodels)
3803                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
3804
3805         // LordHavoc: to clear the fog around the original quake submodel code, I
3806         // will explain:
3807         // first of all, some background info on the submodels:
3808         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3809         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3810         // now the weird for loop itself:
3811         // the loop functions in an odd way, on each iteration it sets up the
3812         // current 'mod' model (which despite the confusing code IS the model of
3813         // the number i), at the end of the loop it duplicates the model to become
3814         // the next submodel, and loops back to set up the new submodel.
3815
3816         // LordHavoc: now the explanation of my sane way (which works identically):
3817         // set up the world model, then on each submodel copy from the world model
3818         // and set up the submodel with the respective model info.
3819         totalstylesurfaces = 0;
3820         totalstyles = 0;
3821         for (i = 0;i < mod->brush.numsubmodels;i++)
3822         {
3823                 memset(stylecounts, 0, sizeof(stylecounts));
3824                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
3825                 {
3826                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
3827                         for (j = 0;j < MAXLIGHTMAPS;j++)
3828                                 stylecounts[surface->lightmapinfo->styles[j]]++;
3829                 }
3830                 for (k = 0;k < 255;k++)
3831                 {
3832                         totalstyles++;
3833                         if (stylecounts[k])
3834                                 totalstylesurfaces += stylecounts[k];
3835                 }
3836         }
3837         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
3838         for (i = 0;i < mod->brush.numsubmodels;i++)
3839         {
3840                 // LordHavoc: this code was originally at the end of this loop, but
3841                 // has been transformed to something more readable at the start here.
3842
3843                 if (i > 0)
3844                 {
3845                         char name[10];
3846                         // duplicate the basic information
3847                         dpsnprintf(name, sizeof(name), "*%i", i);
3848                         mod = Mod_FindName(name, loadmodel->name);
3849                         // copy the base model to this one
3850                         *mod = *loadmodel;
3851                         // rename the clone back to its proper name
3852                         strlcpy(mod->name, name, sizeof(mod->name));
3853                         mod->brush.parentmodel = loadmodel;
3854                         // textures and memory belong to the main model
3855                         mod->texturepool = NULL;
3856                         mod->mempool = NULL;
3857                         mod->brush.GetPVS = NULL;
3858                         mod->brush.FatPVS = NULL;
3859                         mod->brush.BoxTouchingPVS = NULL;
3860                         mod->brush.BoxTouchingLeafPVS = NULL;
3861                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3862                         mod->brush.FindBoxClusters = NULL;
3863                         mod->brush.LightPoint = NULL;
3864                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3865                 }
3866
3867                 mod->brush.submodel = i;
3868
3869                 if (loadmodel->brush.submodels)
3870                         loadmodel->brush.submodels[i] = mod;
3871
3872                 bm = &mod->brushq1.submodels[i];
3873
3874                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3875                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3876                 {
3877                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3878                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3879                 }
3880
3881                 mod->firstmodelsurface = bm->firstface;
3882                 mod->nummodelsurfaces = bm->numfaces;
3883
3884                 // set node/leaf parents for this submodel
3885                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
3886
3887                 // make the model surface list (used by shadowing/lighting)
3888                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
3889                 Mod_MakeSortedSurfaces(mod);
3890
3891                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
3892                 // (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)
3893                 VectorCopy(bm->mins, mod->normalmins);
3894                 VectorCopy(bm->maxs, mod->normalmaxs);
3895                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
3896                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
3897                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
3898                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
3899                 modelradius = modelyawradius + modelradius * modelradius;
3900                 modelyawradius = sqrt(modelyawradius);
3901                 modelradius = sqrt(modelradius);
3902                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
3903                 mod->yawmins[2] = mod->normalmins[2];
3904                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
3905                 mod->yawmaxs[2] = mod->normalmaxs[2];
3906                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3907                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
3908                 mod->radius = modelradius;
3909                 mod->radius2 = modelradius * modelradius;
3910
3911                 // this gets altered below if sky or water is used
3912                 mod->DrawSky = NULL;
3913                 mod->DrawAddWaterPlanes = NULL;
3914
3915                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
3916                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
3917                 if (mod->nummodelsurfaces)
3918                 {
3919                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3920                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3921                                         break;
3922                         if (j < mod->nummodelsurfaces)
3923                                 mod->DrawSky = R_Q1BSP_DrawSky;
3924
3925                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3926                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
3927                                         break;
3928                         if (j < mod->nummodelsurfaces)
3929                                 mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
3930
3931                         // build lightstyle update chains
3932                         // (used to rapidly mark lightmapupdateflags on many surfaces
3933                         // when d_lightstylevalue changes)
3934                         memset(stylecounts, 0, sizeof(stylecounts));
3935                         for (k = 0;k < mod->nummodelsurfaces;k++)
3936                         {
3937                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3938                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3939                                         stylecounts[surface->lightmapinfo->styles[j]]++;
3940                         }
3941                         mod->brushq1.num_lightstyles = 0;
3942                         for (k = 0;k < 255;k++)
3943                         {
3944                                 if (stylecounts[k])
3945                                 {
3946                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
3947                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
3948                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
3949                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
3950                                         remapstyles[k] = mod->brushq1.num_lightstyles;
3951                                         mod->brushq1.num_lightstyles++;
3952                                 }
3953                         }
3954                         for (k = 0;k < mod->nummodelsurfaces;k++)
3955                         {
3956                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3957                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3958                                 {
3959                                         if (surface->lightmapinfo->styles[j] != 255)
3960                                         {
3961                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
3962                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
3963                                         }
3964                                 }
3965                         }
3966                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
3967                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
3968                 }
3969                 else
3970                 {
3971                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3972                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3973                 }
3974                 //mod->brushq1.num_visleafs = bm->visleafs;
3975
3976                 // build a Bounding Interval Hierarchy for culling triangles in light rendering
3977                 Mod_MakeCollisionBIH(mod, true, &mod->render_bih);
3978
3979                 if (mod_q1bsp_polygoncollisions.integer)
3980                 {
3981                         mod->collision_bih = mod->render_bih;
3982                         // point traces and contents checks still use the bsp tree
3983                         mod->TraceLine = Mod_CollisionBIH_TraceLine;
3984                         mod->TraceBox = Mod_CollisionBIH_TraceBox;
3985                         mod->TraceBrush = Mod_CollisionBIH_TraceBrush;
3986                         mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLineAgainstSurfaces;
3987                 }
3988
3989                 // generate VBOs and other shared data before cloning submodels
3990                 if (i == 0)
3991                 {
3992                         Mod_BuildVBOs();
3993                         Mod_Q1BSP_LoadMapBrushes();
3994                         //Mod_Q1BSP_ProcessLightList();
3995                 }
3996         }
3997
3998         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);
3999 }
4000
4001 static void Mod_Q2BSP_LoadEntities(lump_t *l)
4002 {
4003 }
4004
4005 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
4006 {
4007 /*
4008         d_t *in;
4009         m_t *out;
4010         int i, count;
4011
4012         in = (void *)(mod_base + l->fileofs);
4013         if (l->filelen % sizeof(*in))
4014                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4015         count = l->filelen / sizeof(*in);
4016         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4017
4018         loadmodel-> = out;
4019         loadmodel->num = count;
4020
4021         for (i = 0;i < count;i++, in++, out++)
4022         {
4023         }
4024 */
4025 }
4026
4027 static void Mod_Q2BSP_LoadVertices(lump_t *l)
4028 {
4029 /*
4030         d_t *in;
4031         m_t *out;
4032         int i, count;
4033
4034         in = (void *)(mod_base + l->fileofs);
4035         if (l->filelen % sizeof(*in))
4036                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4037         count = l->filelen / sizeof(*in);
4038         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4039
4040         loadmodel-> = out;
4041         loadmodel->num = count;
4042
4043         for (i = 0;i < count;i++, in++, out++)
4044         {
4045         }
4046 */
4047 }
4048
4049 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
4050 {
4051 /*
4052         d_t *in;
4053         m_t *out;
4054         int i, count;
4055
4056         in = (void *)(mod_base + l->fileofs);
4057         if (l->filelen % sizeof(*in))
4058                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
4059         count = l->filelen / sizeof(*in);
4060         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4061
4062         loadmodel-> = out;
4063         loadmodel->num = count;
4064
4065         for (i = 0;i < count;i++, in++, out++)
4066         {
4067         }
4068 */
4069 }
4070
4071 static void Mod_Q2BSP_LoadNodes(lump_t *l)
4072 {
4073 /*
4074         d_t *in;
4075         m_t *out;
4076         int i, count;
4077
4078         in = (void *)(mod_base + l->fileofs);
4079         if (l->filelen % sizeof(*in))
4080                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
4081         count = l->filelen / sizeof(*in);
4082         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4083
4084         loadmodel-> = out;
4085         loadmodel->num = count;
4086
4087         for (i = 0;i < count;i++, in++, out++)
4088         {
4089         }
4090 */
4091 }
4092
4093 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
4094 {
4095 /*
4096         d_t *in;
4097         m_t *out;
4098         int i, count;
4099
4100         in = (void *)(mod_base + l->fileofs);
4101         if (l->filelen % sizeof(*in))
4102                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
4103         count = l->filelen / sizeof(*in);
4104         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4105
4106         loadmodel-> = out;
4107         loadmodel->num = count;
4108
4109         for (i = 0;i < count;i++, in++, out++)
4110         {
4111         }
4112 */
4113 }
4114
4115 static void Mod_Q2BSP_LoadFaces(lump_t *l)
4116 {
4117 /*
4118         d_t *in;
4119         m_t *out;
4120         int i, count;
4121
4122         in = (void *)(mod_base + l->fileofs);
4123         if (l->filelen % sizeof(*in))
4124                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4125         count = l->filelen / sizeof(*in);
4126         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4127
4128         loadmodel-> = out;
4129         loadmodel->num = count;
4130
4131         for (i = 0;i < count;i++, in++, out++)
4132         {
4133         }
4134 */
4135 }
4136
4137 static void Mod_Q2BSP_LoadLighting(lump_t *l)
4138 {
4139 /*
4140         d_t *in;
4141         m_t *out;
4142         int i, count;
4143
4144         in = (void *)(mod_base + l->fileofs);
4145         if (l->filelen % sizeof(*in))
4146                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
4147         count = l->filelen / sizeof(*in);
4148         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4149
4150         loadmodel-> = out;
4151         loadmodel->num = count;
4152
4153         for (i = 0;i < count;i++, in++, out++)
4154         {
4155         }
4156 */
4157 }
4158
4159 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
4160 {
4161 /*
4162         d_t *in;
4163         m_t *out;
4164         int i, count;
4165
4166         in = (void *)(mod_base + l->fileofs);
4167         if (l->filelen % sizeof(*in))
4168                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
4169         count = l->filelen / sizeof(*in);
4170         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4171
4172         loadmodel-> = out;
4173         loadmodel->num = count;
4174
4175         for (i = 0;i < count;i++, in++, out++)
4176         {
4177         }
4178 */
4179 }
4180
4181 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
4182 {
4183 /*
4184         d_t *in;
4185         m_t *out;
4186         int i, count;
4187
4188         in = (void *)(mod_base + l->fileofs);
4189         if (l->filelen % sizeof(*in))
4190                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
4191         count = l->filelen / sizeof(*in);
4192         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4193
4194         loadmodel-> = out;
4195         loadmodel->num = count;
4196
4197         for (i = 0;i < count;i++, in++, out++)
4198         {
4199         }
4200 */
4201 }
4202
4203 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
4204 {
4205 /*
4206         d_t *in;
4207         m_t *out;
4208         int i, count;
4209
4210         in = (void *)(mod_base + l->fileofs);
4211         if (l->filelen % sizeof(*in))
4212                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
4213         count = l->filelen / sizeof(*in);
4214         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4215
4216         loadmodel-> = out;
4217         loadmodel->num = count;
4218
4219         for (i = 0;i < count;i++, in++, out++)
4220         {
4221         }
4222 */
4223 }
4224
4225 static void Mod_Q2BSP_LoadEdges(lump_t *l)
4226 {
4227 /*
4228         d_t *in;
4229         m_t *out;
4230         int i, count;
4231
4232         in = (void *)(mod_base + l->fileofs);
4233         if (l->filelen % sizeof(*in))
4234                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
4235         count = l->filelen / sizeof(*in);
4236         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4237
4238         loadmodel-> = out;
4239         loadmodel->num = count;
4240
4241         for (i = 0;i < count;i++, in++, out++)
4242         {
4243         }
4244 */
4245 }
4246
4247 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
4248 {
4249 /*
4250         d_t *in;
4251         m_t *out;
4252         int i, count;
4253
4254         in = (void *)(mod_base + l->fileofs);
4255         if (l->filelen % sizeof(*in))
4256                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
4257         count = l->filelen / sizeof(*in);
4258         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4259
4260         loadmodel-> = out;
4261         loadmodel->num = count;
4262
4263         for (i = 0;i < count;i++, in++, out++)
4264         {
4265         }
4266 */
4267 }
4268
4269 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
4270 {
4271 /*
4272         d_t *in;
4273         m_t *out;
4274         int i, count;
4275
4276         in = (void *)(mod_base + l->fileofs);
4277         if (l->filelen % sizeof(*in))
4278                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4279         count = l->filelen / sizeof(*in);
4280         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4281
4282         loadmodel-> = out;
4283         loadmodel->num = count;
4284
4285         for (i = 0;i < count;i++, in++, out++)
4286         {
4287         }
4288 */
4289 }
4290
4291 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
4292 {
4293 /*
4294         d_t *in;
4295         m_t *out;
4296         int i, count;
4297
4298         in = (void *)(mod_base + l->fileofs);
4299         if (l->filelen % sizeof(*in))
4300                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4301         count = l->filelen / sizeof(*in);
4302         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4303
4304         loadmodel-> = out;
4305         loadmodel->num = count;
4306
4307         for (i = 0;i < count;i++, in++, out++)
4308         {
4309         }
4310 */
4311 }
4312
4313 static void Mod_Q2BSP_LoadAreas(lump_t *l)
4314 {
4315 /*
4316         d_t *in;
4317         m_t *out;
4318         int i, count;
4319
4320         in = (void *)(mod_base + l->fileofs);
4321         if (l->filelen % sizeof(*in))
4322                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
4323         count = l->filelen / sizeof(*in);
4324         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4325
4326         loadmodel-> = out;
4327         loadmodel->num = count;
4328
4329         for (i = 0;i < count;i++, in++, out++)
4330         {
4331         }
4332 */
4333 }
4334
4335 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
4336 {
4337 /*
4338         d_t *in;
4339         m_t *out;
4340         int i, count;
4341
4342         in = (void *)(mod_base + l->fileofs);
4343         if (l->filelen % sizeof(*in))
4344                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
4345         count = l->filelen / sizeof(*in);
4346         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4347
4348         loadmodel-> = out;
4349         loadmodel->num = count;
4350
4351         for (i = 0;i < count;i++, in++, out++)
4352         {
4353         }
4354 */
4355 }
4356
4357 static void Mod_Q2BSP_LoadModels(lump_t *l)
4358 {
4359 /*
4360         d_t *in;
4361         m_t *out;
4362         int i, count;
4363
4364         in = (void *)(mod_base + l->fileofs);
4365         if (l->filelen % sizeof(*in))
4366                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
4367         count = l->filelen / sizeof(*in);
4368         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4369
4370         loadmodel-> = out;
4371         loadmodel->num = count;
4372
4373         for (i = 0;i < count;i++, in++, out++)
4374         {
4375         }
4376 */
4377 }
4378
4379 void static Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4380 {
4381         int i;
4382         q2dheader_t *header;
4383
4384         Host_Error("Mod_Q2BSP_Load: not yet implemented");
4385
4386         mod->modeldatatypestring = "Q2BSP";
4387
4388         mod->type = mod_brushq2;
4389
4390         header = (q2dheader_t *)buffer;
4391
4392         i = LittleLong(header->version);
4393         if (i != Q2BSPVERSION)
4394                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4395
4396         mod_base = (unsigned char *)header;
4397
4398         // swap all the lumps
4399         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4400                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4401
4402         mod->brush.qw_md4sum = 0;
4403         mod->brush.qw_md4sum2 = 0;
4404         for (i = 0;i < Q2HEADER_LUMPS;i++)
4405         {
4406                 if (i == Q2LUMP_ENTITIES)
4407                         continue;
4408                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4409                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4410                         continue;
4411                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4412         }
4413
4414         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4415         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4416         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4417         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4418         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4419         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4420         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4421         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4422         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4423         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4424         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4425         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4426         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4427         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4428         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4429         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4430         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4431         // LordHavoc: must go last because this makes the submodels
4432         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4433 }
4434
4435 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
4436 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
4437
4438 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4439 {
4440         const char *data;
4441         char key[128], value[MAX_INPUTLINE];
4442         float v[3];
4443         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4444         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4445         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4446         if (!l->filelen)
4447                 return;
4448         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
4449         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4450         loadmodel->brush.entities[l->filelen] = 0;
4451         data = loadmodel->brush.entities;
4452         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4453         // VorteX: q3map2 FS-R generates tangentspace deluxemaps for q3bsp and sets 'deluxeMaps' key
4454         loadmodel->brushq3.deluxemapping = false;
4455         if (data && COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{')
4456         {
4457                 while (1)
4458                 {
4459                         if (!COM_ParseToken_Simple(&data, false, false))
4460                                 break; // error
4461                         if (com_token[0] == '}')
4462                                 break; // end of worldspawn
4463                         if (com_token[0] == '_')
4464                                 strlcpy(key, com_token + 1, sizeof(key));
4465                         else
4466                                 strlcpy(key, com_token, sizeof(key));
4467                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4468                                 key[strlen(key)-1] = 0;
4469                         if (!COM_ParseToken_Simple(&data, false, false))
4470                                 break; // error
4471                         strlcpy(value, com_token, sizeof(value));
4472                         if (!strcasecmp("gridsize", key)) // this one is case insensitive to 100% match q3map2
4473                         {
4474 #if _MSC_VER >= 1400
4475 #define sscanf sscanf_s
4476 #endif
4477 #if 0
4478                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4479                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4480 #else
4481                                 VectorSet(v, 64, 64, 128);
4482                                 if(sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) != 3)
4483                                         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]);
4484                                 if (v[0] != 0 && v[1] != 0 && v[2] != 0)
4485                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4486 #endif
4487                         }
4488                         else if (!strcmp("deluxeMaps", key))
4489                         {
4490                                 if (!strcmp(com_token, "1"))
4491                                 {
4492                                         loadmodel->brushq3.deluxemapping = true;
4493                                         loadmodel->brushq3.deluxemapping_modelspace = true;
4494                                 }
4495                                 else if (!strcmp(com_token, "2"))
4496                                 {
4497                                         loadmodel->brushq3.deluxemapping = true;
4498                                         loadmodel->brushq3.deluxemapping_modelspace = false;
4499                                 }
4500                         }
4501                 }
4502         }
4503 }
4504
4505 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4506 {
4507         q3dtexture_t *in;
4508         texture_t *out;
4509         int i, count;
4510
4511         in = (q3dtexture_t *)(mod_base + l->fileofs);
4512         if (l->filelen % sizeof(*in))
4513                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4514         count = l->filelen / sizeof(*in);
4515         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4516
4517         loadmodel->data_textures = out;
4518         loadmodel->num_textures = count;
4519         loadmodel->num_texturesperskin = loadmodel->num_textures;
4520
4521         for (i = 0;i < count;i++)
4522         {
4523                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4524                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4525                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4526                 Mod_LoadTextureFromQ3Shader(out + i, out[i].name, true, true, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS);
4527                 // restore the surfaceflags and supercontents
4528                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4529                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4530         }
4531 }
4532
4533 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4534 {
4535         q3dplane_t *in;
4536         mplane_t *out;
4537         int i, count;
4538
4539         in = (q3dplane_t *)(mod_base + l->fileofs);
4540         if (l->filelen % sizeof(*in))
4541                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4542         count = l->filelen / sizeof(*in);
4543         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4544
4545         loadmodel->brush.data_planes = out;
4546         loadmodel->brush.num_planes = count;
4547
4548         for (i = 0;i < count;i++, in++, out++)
4549         {
4550                 out->normal[0] = LittleFloat(in->normal[0]);
4551                 out->normal[1] = LittleFloat(in->normal[1]);
4552                 out->normal[2] = LittleFloat(in->normal[2]);
4553                 out->dist = LittleFloat(in->dist);
4554                 PlaneClassify(out);
4555         }
4556 }
4557
4558 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4559 {
4560         q3dbrushside_t *in;
4561         q3mbrushside_t *out;
4562         int i, n, count;
4563
4564         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4565         if (l->filelen % sizeof(*in))
4566                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4567         count = l->filelen / sizeof(*in);
4568         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4569
4570         loadmodel->brush.data_brushsides = out;
4571         loadmodel->brush.num_brushsides = count;
4572
4573         for (i = 0;i < count;i++, in++, out++)
4574         {
4575                 n = LittleLong(in->planeindex);
4576                 if (n < 0 || n >= loadmodel->brush.num_planes)
4577                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4578                 out->plane = loadmodel->brush.data_planes + n;
4579                 n = LittleLong(in->textureindex);
4580                 if (n < 0 || n >= loadmodel->num_textures)
4581                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4582                 out->texture = loadmodel->data_textures + n;
4583         }
4584 }
4585
4586 static void Mod_Q3BSP_LoadBrushSides_IG(lump_t *l)
4587 {
4588         q3dbrushside_ig_t *in;
4589         q3mbrushside_t *out;
4590         int i, n, count;
4591
4592         in = (q3dbrushside_ig_t *)(mod_base + l->fileofs);
4593         if (l->filelen % sizeof(*in))
4594                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4595         count = l->filelen / sizeof(*in);
4596         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4597
4598         loadmodel->brush.data_brushsides = out;
4599         loadmodel->brush.num_brushsides = count;
4600
4601         for (i = 0;i < count;i++, in++, out++)
4602         {
4603                 n = LittleLong(in->planeindex);
4604                 if (n < 0 || n >= loadmodel->brush.num_planes)
4605                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4606                 out->plane = loadmodel->brush.data_planes + n;
4607                 n = LittleLong(in->textureindex);
4608                 if (n < 0 || n >= loadmodel->num_textures)
4609                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4610                 out->texture = loadmodel->data_textures + n;
4611         }
4612 }
4613
4614 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4615 {
4616         q3dbrush_t *in;
4617         q3mbrush_t *out;
4618         int i, j, n, c, count, maxplanes, q3surfaceflags;
4619         colplanef_t *planes;
4620
4621         in = (q3dbrush_t *)(mod_base + l->fileofs);
4622         if (l->filelen % sizeof(*in))
4623                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4624         count = l->filelen / sizeof(*in);
4625         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4626
4627         loadmodel->brush.data_brushes = out;
4628         loadmodel->brush.num_brushes = count;
4629
4630         maxplanes = 0;
4631         planes = NULL;
4632
4633         for (i = 0;i < count;i++, in++, out++)
4634         {
4635                 n = LittleLong(in->firstbrushside);
4636                 c = LittleLong(in->numbrushsides);
4637                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4638                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4639                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4640                 out->numbrushsides = c;
4641                 n = LittleLong(in->textureindex);
4642                 if (n < 0 || n >= loadmodel->num_textures)
4643                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4644                 out->texture = loadmodel->data_textures + n;
4645
4646                 // make a list of mplane_t structs to construct a colbrush from
4647                 if (maxplanes < out->numbrushsides)
4648                 {
4649                         maxplanes = out->numbrushsides;
4650                         if (planes)
4651                                 Mem_Free(planes);
4652                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4653                 }
4654                 q3surfaceflags = 0;
4655                 for (j = 0;j < out->numbrushsides;j++)
4656                 {
4657                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4658                         planes[j].dist = out->firstbrushside[j].plane->dist;
4659                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4660                         planes[j].texture = out->firstbrushside[j].texture;
4661                         q3surfaceflags |= planes[j].q3surfaceflags;
4662                 }
4663                 // make the colbrush from the planes
4664                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
4665
4666                 // this whole loop can take a while (e.g. on redstarrepublic4)
4667                 CL_KeepaliveMessage(false);
4668         }
4669         if (planes)
4670                 Mem_Free(planes);
4671 }
4672
4673 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4674 {
4675         q3deffect_t *in;
4676         q3deffect_t *out;
4677         int i, n, count;
4678
4679         in = (q3deffect_t *)(mod_base + l->fileofs);
4680         if (l->filelen % sizeof(*in))
4681                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4682         count = l->filelen / sizeof(*in);
4683         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4684
4685         loadmodel->brushq3.data_effects = out;
4686         loadmodel->brushq3.num_effects = count;
4687
4688         for (i = 0;i < count;i++, in++, out++)
4689         {
4690                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4691                 n = LittleLong(in->brushindex);
4692                 if (n >= loadmodel->brush.num_brushes)
4693                 {
4694                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4695                         n = -1;
4696                 }
4697                 out->brushindex = n;
4698                 out->unknown = LittleLong(in->unknown);
4699         }
4700 }
4701
4702 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4703 {
4704         q3dvertex_t *in;
4705         int i, count;
4706
4707         in = (q3dvertex_t *)(mod_base + l->fileofs);
4708         if (l->filelen % sizeof(*in))
4709                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4710         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4711         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4712         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4713         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4714         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4715         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4716
4717         for (i = 0;i < count;i++, in++)
4718         {
4719                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4720                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4721                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4722                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4723                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4724                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4725                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4726                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4727                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4728                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4729                 // svector/tvector are calculated later in face loading
4730                 if(mod_q3bsp_sRGBlightmaps.integer)
4731                 {
4732                         // if lightmaps are sRGB, vertex colors are sRGB too, so we need to linearize them
4733                         // note: when this is in use, lightmap color 128 is no longer neutral, but "sRGB half power" is
4734                         // working like this may be odd, but matches q3map2 -gamma 2.2
4735                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
4736                         {
4737                                 // actually we do: Image_sRGBFloatFromLinear_Lightmap(Image_LinearFloatFromsRGBFloat(x))
4738                                 // neutral point is at Image_sRGBFloatFromLinearFloat(0.5)
4739                                 // so we need to map Image_sRGBFloatFromLinearFloat(0.5) to 0.5
4740                                 // factor is 0.5 / Image_sRGBFloatFromLinearFloat(0.5)
4741                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f) * 0.679942f; // fixes neutral level
4742                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f) * 0.679942f; // fixes neutral level
4743                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f) * 0.679942f; // fixes neutral level
4744                         }
4745                         else
4746                         {
4747                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = Image_LinearFloatFromsRGB(in->color4ub[0]);
4748                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = Image_LinearFloatFromsRGB(in->color4ub[1]);
4749                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = Image_LinearFloatFromsRGB(in->color4ub[2]);
4750                         }
4751                 }
4752                 else
4753                 {
4754                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
4755                         {
4756                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[0]);
4757                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[1]);
4758                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = Image_sRGBFloatFromLinear_Lightmap(in->color4ub[2]);
4759                         }
4760                         else
4761                         {
4762                                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4763                                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4764                                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4765                         }
4766                 }
4767                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4768                 if(in->color4ub[0] != 255 || in->color4ub[1] != 255 || in->color4ub[2] != 255)
4769                         loadmodel->lit = true;
4770         }
4771 }
4772
4773 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4774 {
4775         int *in;
4776         int *out;
4777         int i, count;
4778
4779         in = (int *)(mod_base + l->fileofs);
4780         if (l->filelen % sizeof(int[3]))
4781                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4782         count = l->filelen / sizeof(*in);
4783
4784         if(!loadmodel->brushq3.num_vertices)
4785         {
4786                 if (count)
4787                         Con_Printf("Mod_Q3BSP_LoadTriangles: %s has triangles but no vertexes, broken compiler, ignoring problem\n", loadmodel->name);
4788                 loadmodel->brushq3.num_triangles = 0;
4789                 return;
4790         }
4791
4792         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4793         loadmodel->brushq3.num_triangles = count / 3;
4794         loadmodel->brushq3.data_element3i = out;
4795
4796         for (i = 0;i < count;i++, in++, out++)
4797         {
4798                 *out = LittleLong(*in);
4799                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4800                 {
4801                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4802                         *out = 0;
4803                 }
4804         }
4805 }
4806
4807 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4808 {
4809         q3dlightmap_t *input_pointer;
4810         int i;
4811         int j;
4812         int k;
4813         int count;
4814         int powerx;
4815         int powery;
4816         int powerxy;
4817         int powerdxy;
4818         int endlightmap;
4819         int mergegoal;
4820         int lightmapindex;
4821         int realcount;
4822         int realindex;
4823         int mergedwidth;
4824         int mergedheight;
4825         int mergedcolumns;
4826         int mergedrows;
4827         int mergedrowsxcolumns;
4828         int size;
4829         int bytesperpixel;
4830         int rgbmap[3];
4831         unsigned char *c;
4832         unsigned char *mergedpixels;
4833         unsigned char *mergeddeluxepixels;
4834         unsigned char *mergebuf;
4835         char mapname[MAX_QPATH];
4836         qboolean external;
4837         unsigned char *inpixels[10000]; // max count q3map2 can output (it uses 4 digits)
4838
4839         // defaults for q3bsp
4840         size = 128;
4841         bytesperpixel = 3;
4842         rgbmap[0] = 2;
4843         rgbmap[1] = 1;
4844         rgbmap[2] = 0;
4845         external = false;
4846         loadmodel->brushq3.lightmapsize = 128;
4847
4848         if (cls.state == ca_dedicated)
4849                 return;
4850
4851         if(mod_q3bsp_nolightmaps.integer)
4852         {
4853                 return;
4854         }
4855         else if(l->filelen)
4856         {
4857                 // prefer internal LMs for compatibility (a BSP contains no info on whether external LMs exist)
4858                 if (developer_loading.integer)
4859                         Con_Printf("Using internal lightmaps\n");
4860                 input_pointer = (q3dlightmap_t *)(mod_base + l->fileofs);
4861                 if (l->filelen % sizeof(*input_pointer))
4862                         Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4863                 count = l->filelen / sizeof(*input_pointer);
4864                 for(i = 0; i < count; ++i)
4865                         inpixels[i] = input_pointer[i].rgb;
4866         }
4867         else
4868         {
4869                 // no internal lightmaps
4870                 // try external lightmaps
4871                 if (developer_loading.integer)
4872                         Con_Printf("Using external lightmaps\n");
4873                 FS_StripExtension(loadmodel->name, mapname, sizeof(mapname));
4874                 inpixels[0] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, 0), false, false, false, NULL);
4875                 if(!inpixels[0])
4876                         return;
4877
4878                 // using EXTERNAL lightmaps instead
4879                 if(image_width != (int) CeilPowerOf2(image_width) || image_width != image_height)
4880                 {
4881                         Mem_Free(inpixels[0]);
4882                         Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4883                 }
4884
4885                 size = image_width;
4886                 bytesperpixel = 4;
4887                 rgbmap[0] = 0;
4888                 rgbmap[1] = 1;
4889                 rgbmap[2] = 2;
4890                 external = true;
4891
4892                 for(count = 1; ; ++count)
4893                 {
4894                         inpixels[count] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, count), false, false, false, NULL);
4895                         if(!inpixels[count])
4896                                 break; // we got all of them
4897                         if(image_width != size || image_height != size)
4898                         {
4899                                 Mem_Free(inpixels[count]);
4900                                 inpixels[count] = NULL;
4901                                 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);
4902                                 break;
4903                         }
4904                 }
4905         }
4906
4907         loadmodel->brushq3.lightmapsize = size;
4908         loadmodel->brushq3.num_originallightmaps = count;
4909
4910         // now check the surfaces to see if any of them index an odd numbered
4911         // lightmap, if so this is not a deluxemapped bsp file
4912         //
4913         // also check what lightmaps are actually used, because q3map2 sometimes
4914         // (always?) makes an unused one at the end, which
4915         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4916         // reason when only one lightmap is used, which can throw off the
4917         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4918         // to see if the second lightmap is blank, if so it is not deluxemapped.
4919         // VorteX: autodetect only if previous attempt to find "deluxeMaps" key
4920         // in Mod_Q3BSP_LoadEntities was failed
4921         if (!loadmodel->brushq3.deluxemapping)
4922         {
4923                 loadmodel->brushq3.deluxemapping = !(count & 1);
4924                 loadmodel->brushq3.deluxemapping_modelspace = true;
4925                 endlightmap = 0;
4926                 if (loadmodel->brushq3.deluxemapping)
4927                 {
4928                         int facecount = faceslump->filelen / sizeof(q3dface_t);
4929                         q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4930                         for (i = 0;i < facecount;i++)
4931                         {
4932                                 j = LittleLong(faces[i].lightmapindex);
4933                                 if (j >= 0)
4934                                 {
4935                                         endlightmap = max(endlightmap, j + 1);
4936                                         if ((j & 1) || j + 1 >= count)
4937                                         {
4938                                                 loadmodel->brushq3.deluxemapping = false;
4939                                                 break;
4940                                         }
4941                                 }
4942                         }
4943                 }
4944
4945                 // q3map2 sometimes (or always?) makes a second blank lightmap for no
4946                 // reason when only one lightmap is used, which can throw off the
4947                 // deluxemapping detection method, so check 2-lightmap bsp's specifically
4948                 // to see if the second lightmap is blank, if so it is not deluxemapped.
4949                 //
4950                 // further research has shown q3map2 sometimes creates a deluxemap and two
4951                 // blank lightmaps, which must be handled properly as well
4952                 if (endlightmap == 1 && count > 1)
4953                 {
4954                         c = inpixels[1];
4955                         for (i = 0;i < size*size;i++)
4956                         {
4957                                 if (c[bytesperpixel*i + rgbmap[0]])
4958                                         break;
4959                                 if (c[bytesperpixel*i + rgbmap[1]])
4960                                         break;
4961                                 if (c[bytesperpixel*i + rgbmap[2]])
4962                                         break;
4963                         }
4964                         if (i == size*size)
4965                         {
4966                                 // all pixels in the unused lightmap were black...
4967                                 loadmodel->brushq3.deluxemapping = false;
4968                         }
4969                 }
4970         }
4971
4972         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4973
4974         // figure out what the most reasonable merge power is within limits
4975
4976         // find the appropriate NxN dimensions to merge to, to avoid wasted space
4977         realcount = count >> (int)loadmodel->brushq3.deluxemapping;
4978
4979         // figure out how big the merged texture has to be
4980         mergegoal = 128<<bound(0, mod_q3bsp_lightmapmergepower.integer, 6);
4981         mergegoal = bound(size, mergegoal, (int)vid.maxtexturesize_2d);
4982         while (mergegoal > size && mergegoal * mergegoal / 4 >= size * size * realcount)
4983                 mergegoal /= 2;
4984         mergedwidth = mergegoal;
4985         mergedheight = mergegoal;
4986         // choose non-square size (2x1 aspect) if only half the space is used;
4987         // this really only happens when the entire set fits in one texture, if
4988         // there are multiple textures, we don't worry about shrinking the last
4989         // one to fit, because the driver prefers the same texture size on
4990         // consecutive draw calls...
4991         if (mergedwidth * mergedheight / 2 >= size*size*realcount)
4992                 mergedheight /= 2;
4993
4994         loadmodel->brushq3.num_lightmapmergedwidthpower = 0;
4995         loadmodel->brushq3.num_lightmapmergedheightpower = 0;
4996         while (mergedwidth > size<<loadmodel->brushq3.num_lightmapmergedwidthpower)
4997                 loadmodel->brushq3.num_lightmapmergedwidthpower++;
4998         while (mergedheight > size<<loadmodel->brushq3.num_lightmapmergedheightpower)
4999                 loadmodel->brushq3.num_lightmapmergedheightpower++;
5000         loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower = loadmodel->brushq3.num_lightmapmergedwidthpower + loadmodel->brushq3.num_lightmapmergedheightpower + (loadmodel->brushq3.deluxemapping ? 1 : 0);
5001
5002         powerx = loadmodel->brushq3.num_lightmapmergedwidthpower;
5003         powery = loadmodel->brushq3.num_lightmapmergedheightpower;
5004         powerxy = powerx+powery;
5005         powerdxy = loadmodel->brushq3.deluxemapping + powerxy;
5006
5007         mergedcolumns = 1 << powerx;
5008         mergedrows = 1 << powery;
5009         mergedrowsxcolumns = 1 << powerxy;
5010
5011         loadmodel->brushq3.num_mergedlightmaps = (realcount + (1 << powerxy) - 1) >> powerxy;
5012         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
5013         if (loadmodel->brushq3.deluxemapping)
5014                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
5015
5016         // allocate a texture pool if we need it
5017         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
5018                 loadmodel->texturepool = R_AllocTexturePool();
5019
5020         mergedpixels = (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4);
5021         mergeddeluxepixels = loadmodel->brushq3.deluxemapping ? (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4) : NULL;
5022         for (i = 0;i < count;i++)
5023         {
5024                 // figure out which merged lightmap texture this fits into
5025                 realindex = i >> (int)loadmodel->brushq3.deluxemapping;
5026                 lightmapindex = i >> powerdxy;
5027
5028                 // choose the destination address
5029                 mergebuf = (loadmodel->brushq3.deluxemapping && (i & 1)) ? mergeddeluxepixels : mergedpixels;
5030                 mergebuf += 4 * (realindex & (mergedcolumns-1))*size + 4 * ((realindex >> powerx) & (mergedrows-1))*mergedwidth*size;
5031                 if ((i & 1) == 0 || !loadmodel->brushq3.deluxemapping)
5032                         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);
5033
5034                 // convert pixels from RGB or BGRA while copying them into the destination rectangle
5035                 for (j = 0;j < size;j++)
5036                 for (k = 0;k < size;k++)
5037                 {
5038                         mergebuf[(j*mergedwidth+k)*4+0] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[0]];
5039                         mergebuf[(j*mergedwidth+k)*4+1] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[1]];
5040                         mergebuf[(j*mergedwidth+k)*4+2] = inpixels[i][(j*size+k)*bytesperpixel+rgbmap[2]];
5041                         mergebuf[(j*mergedwidth+k)*4+3] = 255;
5042                 }
5043
5044                 // upload texture if this was the last tile being written to the texture
5045                 if (((realindex + 1) & (mergedrowsxcolumns - 1)) == 0 || (realindex + 1) == realcount)
5046                 {
5047                         if (loadmodel->brushq3.deluxemapping && (i & 1))
5048                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergedwidth, mergedheight, mergeddeluxepixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5049                         else
5050                         {
5051                                 if(mod_q3bsp_sRGBlightmaps.integer)
5052                                 {
5053                                         textype_t t;
5054                                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5055                                         {
5056                                                 // TODO (should we do this, or should we instead knowingly render brighter in sRGB fallback mode?)
5057                                                 int n = mergedwidth * mergedheight * 4;
5058                                                 int i;
5059                                                 for(i = 0; i < n; i += 4)
5060                                                 {
5061                                                         // actually we do: Image_sRGBFloatFromLinear_Lightmap(Image_LinearFloatFromsRGBFloat(x))
5062                                                         // neutral point is at Image_sRGBFloatFromLinearFloat(0.5)
5063                                                         // so we need to map Image_sRGBFloatFromLinearFloat(0.5) to 0.5
5064                                                         // factor is 0.5 / Image_sRGBFloatFromLinearFloat(0.5)
5065                                                         mergedpixels[i+0] = (mergedpixels[i+0] * (int)173 + 128) / 255;
5066                                                         mergedpixels[i+1] = (mergedpixels[i+1] * (int)173 + 128) / 255;
5067                                                         mergedpixels[i+2] = (mergedpixels[i+2] * (int)173 + 128) / 255;
5068                                                 }
5069                                                 t = TEXTYPE_BGRA; // in stupid fallback mode, we upload lightmaps in sRGB form and just fix their brightness
5070                                         }
5071                                         else
5072                                                 t = TEXTYPE_SRGB_BGRA; // normally, we upload lightmaps in sRGB form (possibly downconverted to linear)
5073                                         loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergedwidth, mergedheight, mergedpixels, t, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5074                                 }
5075                                 else
5076                                 {
5077                                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5078                                                 Image_MakesRGBColorsFromLinear_Lightmap(mergedpixels, mergedpixels, mergedwidth * mergedheight);
5079                                         loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergedwidth, mergedheight, mergedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), -1, NULL);
5080                                 }
5081                         }
5082                 }
5083         }
5084
5085         if (mergeddeluxepixels)
5086                 Mem_Free(mergeddeluxepixels);
5087         Mem_Free(mergedpixels);
5088         if(external)
5089         {
5090                 for(i = 0; i < count; ++i)
5091                         Mem_Free(inpixels[i]);
5092         }
5093 }
5094
5095 static void Mod_Q3BSP_BuildBBoxes(const int *element3i, int num_triangles, const float *vertex3f, float **collisionbbox6f, int *collisionstride, int stride)
5096 {
5097         int j, k, cnt, tri;
5098         float *mins, *maxs;
5099         const float *vert;
5100         *collisionstride = stride;
5101         if(stride > 0)
5102         {
5103                 cnt = (num_triangles + stride - 1) / stride;
5104                 *collisionbbox6f = (float *) Mem_Alloc(loadmodel->mempool, sizeof(float[6]) * cnt);
5105                 for(j = 0; j < cnt; ++j)
5106                 {
5107                         mins = &((*collisionbbox6f)[6 * j + 0]);
5108                         maxs = &((*collisionbbox6f)[6 * j + 3]);
5109                         for(k = 0; k < stride; ++k)
5110                         {
5111                                 tri = j * stride + k;
5112                                 if(tri >= num_triangles)
5113                                         break;
5114                                 vert = &(vertex3f[element3i[3 * tri + 0] * 3]);
5115                                 if(!k || vert[0] < mins[0]) mins[0] = vert[0];
5116                                 if(!k || vert[1] < mins[1]) mins[1] = vert[1];
5117                                 if(!k || vert[2] < mins[2]) mins[2] = vert[2];
5118                                 if(!k || vert[0] > maxs[0]) maxs[0] = vert[0];
5119                                 if(!k || vert[1] > maxs[1]) maxs[1] = vert[1];
5120                                 if(!k || vert[2] > maxs[2]) maxs[2] = vert[2];
5121                                 vert = &(vertex3f[element3i[3 * tri + 1] * 3]);
5122                                 if(vert[0] < mins[0]) mins[0] = vert[0];
5123                                 if(vert[1] < mins[1]) mins[1] = vert[1];
5124                                 if(vert[2] < mins[2]) mins[2] = vert[2];
5125                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
5126                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
5127                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
5128                                 vert = &(vertex3f[element3i[3 * tri + 2] * 3]);
5129                                 if(vert[0] < mins[0]) mins[0] = vert[0];
5130                                 if(vert[1] < mins[1]) mins[1] = vert[1];
5131                                 if(vert[2] < mins[2]) mins[2] = vert[2];
5132                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
5133                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
5134                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
5135                         }
5136                 }
5137         }
5138         else
5139                 *collisionbbox6f = NULL;
5140 }
5141
5142 typedef struct patchtess_s
5143 {
5144         patchinfo_t info;
5145
5146         // Auxiliary data used only by patch loading code in Mod_Q3BSP_LoadFaces
5147         int surface_id;
5148         float lodgroup[6];
5149         float *originalvertex3f;
5150 } patchtess_t;
5151
5152 #define PATCHTESS_SAME_LODGROUP(a,b) \
5153         ( \
5154                 (a).lodgroup[0] == (b).lodgroup[0] && \
5155                 (a).lodgroup[1] == (b).lodgroup[1] && \
5156                 (a).lodgroup[2] == (b).lodgroup[2] && \
5157                 (a).lodgroup[3] == (b).lodgroup[3] && \
5158                 (a).lodgroup[4] == (b).lodgroup[4] && \
5159                 (a).lodgroup[5] == (b).lodgroup[5] \
5160         )
5161
5162 static void Mod_Q3BSP_LoadFaces(lump_t *l)
5163 {
5164         q3dface_t *in, *oldin;
5165         msurface_t *out, *oldout;
5166         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;
5167         float lightmaptcbase[2], lightmaptcscale[2];
5168         //int *originalelement3i;
5169         //int *originalneighbor3i;
5170         float *originalvertex3f;
5171         //float *originalsvector3f;
5172         //float *originaltvector3f;
5173         float *originalnormal3f;
5174         float *originalcolor4f;
5175         float *originaltexcoordtexture2f;
5176         float *originaltexcoordlightmap2f;
5177         float *surfacecollisionvertex3f;
5178         int *surfacecollisionelement3i;
5179         float *v;
5180         patchtess_t *patchtess = NULL;
5181         int patchtesscount = 0;
5182         qboolean again;
5183
5184         in = (q3dface_t *)(mod_base + l->fileofs);
5185         if (l->filelen % sizeof(*in))
5186                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
5187         count = l->filelen / sizeof(*in);
5188         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5189
5190         loadmodel->data_surfaces = out;
5191         loadmodel->num_surfaces = count;
5192
5193         if(count > 0)
5194                 patchtess = (patchtess_t*) Mem_Alloc(tempmempool, count * sizeof(*patchtess));
5195
5196         i = 0;
5197         oldi = i;
5198         oldin = in;
5199         oldout = out;
5200         meshvertices = 0;
5201         meshtriangles = 0;
5202         for (;i < count;i++, in++, out++)
5203         {
5204                 // check face type first
5205                 type = LittleLong(in->type);
5206                 if (type != Q3FACETYPE_FLAT
5207                  && type != Q3FACETYPE_PATCH
5208                  && type != Q3FACETYPE_MESH
5209                  && type != Q3FACETYPE_FLARE)
5210                 {
5211                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
5212                         continue;
5213                 }
5214
5215                 n = LittleLong(in->textureindex);
5216                 if (n < 0 || n >= loadmodel->num_textures)
5217                 {
5218                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
5219                         continue;
5220                 }
5221                 out->texture = loadmodel->data_textures + n;
5222                 n = LittleLong(in->effectindex);
5223                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
5224                 {
5225                         if (developer_extra.integer)
5226                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
5227                         n = -1;
5228                 }
5229                 if (n == -1)
5230                         out->effect = NULL;
5231                 else
5232                         out->effect = loadmodel->brushq3.data_effects + n;
5233
5234                 if (cls.state != ca_dedicated)
5235                 {
5236                         out->lightmaptexture = NULL;
5237                         out->deluxemaptexture = r_texture_blanknormalmap;
5238                         n = LittleLong(in->lightmapindex);
5239                         if (n < 0)
5240                                 n = -1;
5241                         else if (n >= loadmodel->brushq3.num_originallightmaps)
5242                         {
5243                                 if(loadmodel->brushq3.num_originallightmaps != 0)
5244                                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
5245                                 n = -1;
5246                         }
5247                         else
5248                         {
5249                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower];
5250                                 if (loadmodel->brushq3.deluxemapping)
5251                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> loadmodel->brushq3.num_lightmapmergedwidthheightdeluxepower];
5252                                 loadmodel->lit = true;
5253                         }
5254                 }
5255
5256                 firstvertex = LittleLong(in->firstvertex);
5257                 numvertices = LittleLong(in->numvertices);
5258                 firstelement = LittleLong(in->firstelement);
5259                 numtriangles = LittleLong(in->numelements) / 3;
5260                 if (numtriangles * 3 != LittleLong(in->numelements))
5261                 {
5262                         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));
5263                         continue;
5264                 }
5265                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
5266                 {
5267                         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);
5268                         continue;
5269                 }
5270                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5271                 {
5272                         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);
5273                         continue;
5274                 }
5275                 switch(type)
5276                 {
5277                 case Q3FACETYPE_FLAT:
5278                 case Q3FACETYPE_MESH:
5279                         // no processing necessary
5280                         break;
5281                 case Q3FACETYPE_PATCH:
5282                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5283                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5284                         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))
5285                         {
5286                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5287                                 continue;
5288                         }
5289                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5290
5291                         // convert patch to Q3FACETYPE_MESH
5292                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5293                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5294                         // bound to user settings
5295                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5296                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5297                         // bound to sanity settings
5298                         xtess = bound(0, xtess, 1024);
5299                         ytess = bound(0, ytess, 1024);
5300
5301                         // lower quality collision patches! Same procedure as before, but different cvars
5302                         // convert patch to Q3FACETYPE_MESH
5303                         cxtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5304                         cytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5305                         // bound to user settings
5306                         cxtess = bound(r_subdivisions_collision_mintess.integer, cxtess, r_subdivisions_collision_maxtess.integer);
5307                         cytess = bound(r_subdivisions_collision_mintess.integer, cytess, r_subdivisions_collision_maxtess.integer);
5308                         // bound to sanity settings
5309                         cxtess = bound(0, cxtess, 1024);
5310                         cytess = bound(0, cytess, 1024);
5311
5312                         // store it for the LOD grouping step
5313                         patchtess[patchtesscount].info.xsize = patchsize[0];
5314                         patchtess[patchtesscount].info.ysize = patchsize[1];
5315                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].xtess = xtess;
5316                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].ytess = ytess;
5317                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].xtess = cxtess;
5318                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].ytess = cytess;
5319
5320                         patchtess[patchtesscount].surface_id = i;
5321                         patchtess[patchtesscount].lodgroup[0] = LittleFloat(in->specific.patch.mins[0]);
5322                         patchtess[patchtesscount].lodgroup[1] = LittleFloat(in->specific.patch.mins[1]);
5323                         patchtess[patchtesscount].lodgroup[2] = LittleFloat(in->specific.patch.mins[2]);
5324                         patchtess[patchtesscount].lodgroup[3] = LittleFloat(in->specific.patch.maxs[0]);
5325                         patchtess[patchtesscount].lodgroup[4] = LittleFloat(in->specific.patch.maxs[1]);
5326                         patchtess[patchtesscount].lodgroup[5] = LittleFloat(in->specific.patch.maxs[2]);
5327                         patchtess[patchtesscount].originalvertex3f = originalvertex3f;
5328                         ++patchtesscount;
5329                         break;
5330                 case Q3FACETYPE_FLARE:
5331                         if (developer_extra.integer)
5332                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5333                         // don't render it
5334                         continue;
5335                 }
5336                 out->num_vertices = numvertices;
5337                 out->num_triangles = numtriangles;
5338                 meshvertices += out->num_vertices;
5339                 meshtriangles += out->num_triangles;
5340         }
5341
5342         // Fix patches tesselations so that they make no seams
5343         do
5344         {
5345                 again = false;
5346                 for(i = 0; i < patchtesscount; ++i)
5347                 {
5348                         for(j = i+1; j < patchtesscount; ++j)
5349                         {
5350                                 if (!PATCHTESS_SAME_LODGROUP(patchtess[i], patchtess[j]))
5351                                         continue;
5352
5353                                 if (Q3PatchAdjustTesselation(3, &patchtess[i].info, patchtess[i].originalvertex3f, &patchtess[j].info, patchtess[j].originalvertex3f) )
5354                                         again = true;
5355                         }
5356                 }
5357         }
5358         while (again);
5359
5360         // Calculate resulting number of triangles
5361         collisionvertices = 0;
5362         collisiontriangles = 0;
5363         for(i = 0; i < patchtesscount; ++i)
5364         {
5365                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_VISUAL].xtess);
5366                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_VISUAL].ytess);
5367                 numvertices = finalwidth * finalheight;
5368                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5369
5370                 oldout[patchtess[i].surface_id].num_vertices = numvertices;
5371                 oldout[patchtess[i].surface_id].num_triangles = numtriangles;
5372                 meshvertices += oldout[patchtess[i].surface_id].num_vertices;
5373                 meshtriangles += oldout[patchtess[i].surface_id].num_triangles;
5374
5375                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_COLLISION].xtess);
5376                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_COLLISION].ytess);
5377                 numvertices = finalwidth * finalheight;
5378                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5379
5380                 oldout[patchtess[i].surface_id].num_collisionvertices = numvertices;
5381                 oldout[patchtess[i].surface_id].num_collisiontriangles = numtriangles;
5382                 collisionvertices += oldout[patchtess[i].surface_id].num_collisionvertices;
5383                 collisiontriangles += oldout[patchtess[i].surface_id].num_collisiontriangles;
5384         }
5385
5386         i = oldi;
5387         in = oldin;
5388         out = oldout;
5389         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5390         if (collisiontriangles)
5391         {
5392                 loadmodel->brush.data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, collisionvertices * sizeof(float[3]));
5393                 loadmodel->brush.data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, collisiontriangles * sizeof(int[3]));
5394         }
5395         meshvertices = 0;
5396         meshtriangles = 0;
5397         collisionvertices = 0;
5398         collisiontriangles = 0;
5399         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5400         {
5401                 if (out->num_vertices < 3 || out->num_triangles < 1)
5402                         continue;
5403
5404                 type = LittleLong(in->type);
5405                 firstvertex = LittleLong(in->firstvertex);
5406                 firstelement = LittleLong(in->firstelement);
5407                 out->num_firstvertex = meshvertices;
5408                 out->num_firsttriangle = meshtriangles;
5409                 out->num_firstcollisiontriangle = collisiontriangles;
5410                 switch(type)
5411                 {
5412                 case Q3FACETYPE_FLAT:
5413                 case Q3FACETYPE_MESH:
5414                         // no processing necessary, except for lightmap merging
5415                         for (j = 0;j < out->num_vertices;j++)
5416                         {
5417                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5418                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5419                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5420                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5421                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5422                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5423                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5424                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5425                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5426                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5427                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5428                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5429                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5430                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5431                         }
5432                         for (j = 0;j < out->num_triangles*3;j++)
5433                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5434                         break;
5435                 case Q3FACETYPE_PATCH:
5436                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5437                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5438                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5439                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5440                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5441                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5442                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5443
5444                         xtess = ytess = cxtess = cytess = -1;
5445                         for(j = 0; j < patchtesscount; ++j)
5446                                 if(patchtess[j].surface_id == i)
5447                                 {
5448                                         xtess = patchtess[j].info.lods[PATCH_LOD_VISUAL].xtess;
5449                                         ytess = patchtess[j].info.lods[PATCH_LOD_VISUAL].ytess;
5450                                         cxtess = patchtess[j].info.lods[PATCH_LOD_COLLISION].xtess;
5451                                         cytess = patchtess[j].info.lods[PATCH_LOD_COLLISION].ytess;
5452                                         break;
5453                                 }
5454                         if(xtess == -1)
5455                         {
5456                                 Con_Printf("ERROR: patch %d isn't preprocessed?!?\n", i);
5457                                 xtess = ytess = cxtess = cytess = 0;
5458                         }
5459
5460                         finalwidth = Q3PatchDimForTess(patchsize[0],xtess); //((patchsize[0] - 1) * xtess) + 1;
5461                         finalheight = Q3PatchDimForTess(patchsize[1],ytess); //((patchsize[1] - 1) * ytess) + 1;
5462                         finalvertices = finalwidth * finalheight;
5463                         oldnumtriangles = finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5464                         type = Q3FACETYPE_MESH;
5465                         // generate geometry
5466                         // (note: normals are skipped because they get recalculated)
5467                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5468                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5469                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5470                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5471                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5472                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5473
5474                         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);
5475
5476                         if (developer_extra.integer)
5477                         {
5478                                 if (out->num_triangles < finaltriangles)
5479                                         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);
5480                                 else
5481                                         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);
5482                         }
5483                         // q3map does not put in collision brushes for curves... ugh
5484                         // build the lower quality collision geometry
5485                         finalwidth = Q3PatchDimForTess(patchsize[0],cxtess); //((patchsize[0] - 1) * cxtess) + 1;
5486                         finalheight = Q3PatchDimForTess(patchsize[1],cytess); //((patchsize[1] - 1) * cytess) + 1;
5487                         finalvertices = finalwidth * finalheight;
5488                         oldnumtriangles2 = finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5489
5490                         // legacy collision geometry implementation
5491                         out->deprecatedq3data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5492                         out->deprecatedq3data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5493                         out->num_collisionvertices = finalvertices;
5494                         out->num_collisiontriangles = finaltriangles;
5495                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->deprecatedq3data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5496                         Q3PatchTriangleElements(out->deprecatedq3data_collisionelement3i, finalwidth, finalheight, 0);
5497
5498                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5499                         Mod_SnapVertices(3, finalvertices, out->deprecatedq3data_collisionvertex3f, 1);
5500
5501                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(finaltriangles, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionvertex3f);
5502
5503                         // now optimize the collision mesh by finding triangle bboxes...
5504                         Mod_Q3BSP_BuildBBoxes(out->deprecatedq3data_collisionelement3i, out->num_collisiontriangles, out->deprecatedq3data_collisionvertex3f, &out->deprecatedq3data_collisionbbox6f, &out->deprecatedq3num_collisionbboxstride, mod_q3bsp_curves_collisions_stride.integer);
5505                         Mod_Q3BSP_BuildBBoxes(loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle, out->num_triangles, loadmodel->surfmesh.data_vertex3f, &out->deprecatedq3data_bbox6f, &out->deprecatedq3num_bboxstride, mod_q3bsp_curves_stride.integer);
5506
5507                         // store collision geometry for BIH collision tree
5508                         surfacecollisionvertex3f = loadmodel->brush.data_collisionvertex3f + collisionvertices * 3;
5509                         surfacecollisionelement3i = loadmodel->brush.data_collisionelement3i + collisiontriangles * 3;
5510                         Q3PatchTesselateFloat(3, sizeof(float[3]), surfacecollisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5511                         Q3PatchTriangleElements(surfacecollisionelement3i, finalwidth, finalheight, collisionvertices);
5512                         Mod_SnapVertices(3, finalvertices, surfacecollisionvertex3f, 1);
5513 #if 1
5514                         // remove this once the legacy code is removed
5515                         {
5516                                 int nc = out->num_collisiontriangles;
5517 #endif
5518                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(finaltriangles, surfacecollisionelement3i, surfacecollisionelement3i, loadmodel->brush.data_collisionvertex3f);
5519 #if 1
5520                                 if(nc != out->num_collisiontriangles)
5521                                 {
5522                                         Con_Printf("number of collision triangles differs between BIH and BSP. FAIL.\n");
5523                                 }
5524                         }
5525 #endif
5526
5527                         if (developer_extra.integer)
5528                                 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);
5529
5530                         collisionvertices += finalvertices;
5531                         collisiontriangles += out->num_collisiontriangles;
5532                         break;
5533                 default:
5534                         break;
5535                 }
5536                 meshvertices += out->num_vertices;
5537                 meshtriangles += out->num_triangles;
5538                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5539                         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)
5540                                 invalidelements++;
5541                 if (invalidelements)
5542                 {
5543                         Con_Printf("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);
5544                         for (j = 0;j < out->num_triangles * 3;j++)
5545                         {
5546                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5547                                 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)
5548                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5549                         }
5550                         Con_Print("\n");
5551                 }
5552                 // calculate a bounding box
5553                 VectorClear(out->mins);
5554                 VectorClear(out->maxs);
5555                 if (out->num_vertices)
5556                 {
5557                         if (cls.state != ca_dedicated && out->lightmaptexture)
5558                         {
5559                                 // figure out which part of the merged lightmap this fits into
5560                                 int lightmapindex = LittleLong(in->lightmapindex) >> (loadmodel->brushq3.deluxemapping ? 1 : 0);
5561                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5562                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5563                                 lightmapindex &= mergewidth * mergeheight - 1;
5564                                 lightmaptcscale[0] = 1.0f / mergewidth;
5565                                 lightmaptcscale[1] = 1.0f / mergeheight;
5566                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
5567                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
5568                                 // modify the lightmap texcoords to match this region of the merged lightmap
5569                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5570                                 {
5571                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
5572                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
5573                                 }
5574                         }
5575                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5576                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5577                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5578                         {
5579                                 out->mins[0] = min(out->mins[0], v[0]);
5580                                 out->maxs[0] = max(out->maxs[0], v[0]);
5581                                 out->mins[1] = min(out->mins[1], v[1]);
5582                                 out->maxs[1] = max(out->maxs[1], v[1]);
5583                                 out->mins[2] = min(out->mins[2], v[2]);
5584                                 out->maxs[2] = max(out->maxs[2], v[2]);
5585                         }
5586                         out->mins[0] -= 1.0f;
5587                         out->mins[1] -= 1.0f;
5588                         out->mins[2] -= 1.0f;
5589                         out->maxs[0] += 1.0f;
5590                         out->maxs[1] += 1.0f;
5591                         out->maxs[2] += 1.0f;
5592                 }
5593                 // set lightmap styles for consistency with q1bsp
5594                 //out->lightmapinfo->styles[0] = 0;
5595                 //out->lightmapinfo->styles[1] = 255;
5596                 //out->lightmapinfo->styles[2] = 255;
5597                 //out->lightmapinfo->styles[3] = 255;
5598         }
5599
5600         i = oldi;
5601         out = oldout;
5602         for (;i < count;i++, out++)
5603         {
5604                 if(out->num_vertices && out->num_triangles)
5605                         continue;
5606                 if(out->num_vertices == 0)
5607                 {
5608                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d (texture %s) has no vertices, ignoring\n", i, out->texture ? out->texture->name : "(none)");
5609                         if(out->num_triangles == 0)
5610                                 Con_Printf("Mod_Q3BSP_LoadFaces: surface %d (texture %s) has no triangles, ignoring\n", i, out->texture ? out->texture->name : "(none)");
5611                 }
5612                 else if(out->num_triangles == 0)
5613                         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)",
5614                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[0 * 3 + 0],
5615                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[1 * 3 + 0],
5616                                         (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[2 * 3 + 0]);
5617         }
5618
5619         // for per pixel lighting
5620         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);
5621
5622         // generate ushort elements array if possible
5623         if (loadmodel->surfmesh.data_element3s)
5624                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
5625                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
5626
5627         // free the no longer needed vertex data
5628         loadmodel->brushq3.num_vertices = 0;
5629         if (loadmodel->brushq3.data_vertex3f)
5630                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5631         loadmodel->brushq3.data_vertex3f = NULL;
5632         loadmodel->brushq3.data_normal3f = NULL;
5633         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5634         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5635         loadmodel->brushq3.data_color4f = NULL;
5636         // free the no longer needed triangle data
5637         loadmodel->brushq3.num_triangles = 0;
5638         if (loadmodel->brushq3.data_element3i)
5639                 Mem_Free(loadmodel->brushq3.data_element3i);
5640         loadmodel->brushq3.data_element3i = NULL;
5641
5642         if(patchtess)
5643                 Mem_Free(patchtess);
5644 }
5645
5646 static void Mod_Q3BSP_LoadModels(lump_t *l)
5647 {
5648         q3dmodel_t *in;
5649         q3dmodel_t *out;
5650         int i, j, n, c, count;
5651
5652         in = (q3dmodel_t *)(mod_base + l->fileofs);
5653         if (l->filelen % sizeof(*in))
5654                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5655         count = l->filelen / sizeof(*in);
5656         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5657
5658         loadmodel->brushq3.data_models = out;
5659         loadmodel->brushq3.num_models = count;
5660
5661         for (i = 0;i < count;i++, in++, out++)
5662         {
5663                 for (j = 0;j < 3;j++)
5664                 {
5665                         out->mins[j] = LittleFloat(in->mins[j]);
5666                         out->maxs[j] = LittleFloat(in->maxs[j]);
5667                 }
5668                 n = LittleLong(in->firstface);
5669                 c = LittleLong(in->numfaces);
5670                 if (n < 0 || n + c > loadmodel->num_surfaces)
5671                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5672                 out->firstface = n;
5673                 out->numfaces = c;
5674                 n = LittleLong(in->firstbrush);
5675                 c = LittleLong(in->numbrushes);
5676                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5677                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5678                 out->firstbrush = n;
5679                 out->numbrushes = c;
5680         }
5681 }
5682
5683 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5684 {
5685         int *in;
5686         int *out;
5687         int i, n, count;
5688
5689         in = (int *)(mod_base + l->fileofs);
5690         if (l->filelen % sizeof(*in))
5691                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5692         count = l->filelen / sizeof(*in);
5693         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5694
5695         loadmodel->brush.data_leafbrushes = out;
5696         loadmodel->brush.num_leafbrushes = count;
5697
5698         for (i = 0;i < count;i++, in++, out++)
5699         {
5700                 n = LittleLong(*in);
5701                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5702                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5703                 *out = n;
5704         }
5705 }
5706
5707 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5708 {
5709         int *in;
5710         int *out;
5711         int i, n, count;
5712
5713         in = (int *)(mod_base + l->fileofs);
5714         if (l->filelen % sizeof(*in))
5715                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5716         count = l->filelen / sizeof(*in);
5717         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5718
5719         loadmodel->brush.data_leafsurfaces = out;
5720         loadmodel->brush.num_leafsurfaces = count;
5721
5722         for (i = 0;i < count;i++, in++, out++)
5723         {
5724                 n = LittleLong(*in);
5725                 if (n < 0 || n >= loadmodel->num_surfaces)
5726                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5727                 *out = n;
5728         }
5729 }
5730
5731 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5732 {
5733         q3dleaf_t *in;
5734         mleaf_t *out;
5735         int i, j, n, c, count;
5736
5737         in = (q3dleaf_t *)(mod_base + l->fileofs);
5738         if (l->filelen % sizeof(*in))
5739                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5740         count = l->filelen / sizeof(*in);
5741         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5742
5743         loadmodel->brush.data_leafs = out;
5744         loadmodel->brush.num_leafs = count;
5745
5746         for (i = 0;i < count;i++, in++, out++)
5747         {
5748                 out->parent = NULL;
5749                 out->plane = NULL;
5750                 out->clusterindex = LittleLong(in->clusterindex);
5751                 out->areaindex = LittleLong(in->areaindex);
5752                 for (j = 0;j < 3;j++)
5753                 {
5754                         // yes the mins/maxs are ints
5755                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5756                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5757                 }
5758                 n = LittleLong(in->firstleafface);
5759                 c = LittleLong(in->numleaffaces);
5760                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5761                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5762                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5763                 out->numleafsurfaces = c;
5764                 n = LittleLong(in->firstleafbrush);
5765                 c = LittleLong(in->numleafbrushes);
5766                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5767                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5768                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5769                 out->numleafbrushes = c;
5770         }
5771 }
5772
5773 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5774 {
5775         q3dnode_t *in;
5776         mnode_t *out;
5777         int i, j, n, count;
5778
5779         in = (q3dnode_t *)(mod_base + l->fileofs);
5780         if (l->filelen % sizeof(*in))
5781                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5782         count = l->filelen / sizeof(*in);
5783         if (count == 0)
5784                 Host_Error("Mod_Q3BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
5785         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5786
5787         loadmodel->brush.data_nodes = out;
5788         loadmodel->brush.num_nodes = count;
5789
5790         for (i = 0;i < count;i++, in++, out++)
5791         {
5792                 out->parent = NULL;
5793                 n = LittleLong(in->planeindex);
5794                 if (n < 0 || n >= loadmodel->brush.num_planes)
5795                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5796                 out->plane = loadmodel->brush.data_planes + n;
5797                 for (j = 0;j < 2;j++)
5798                 {
5799                         n = LittleLong(in->childrenindex[j]);
5800                         if (n >= 0)
5801                         {
5802                                 if (n >= loadmodel->brush.num_nodes)
5803                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5804                                 out->children[j] = loadmodel->brush.data_nodes + n;
5805                         }
5806                         else
5807                         {
5808                                 n = -1 - n;
5809                                 if (n >= loadmodel->brush.num_leafs)
5810                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5811                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5812                         }
5813                 }
5814                 for (j = 0;j < 3;j++)
5815                 {
5816                         // yes the mins/maxs are ints
5817                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5818                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5819                 }
5820         }
5821
5822         // set the parent pointers
5823         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5824 }
5825
5826 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5827 {
5828         q3dlightgrid_t *in;
5829         q3dlightgrid_t *out;
5830         int count;
5831         int i;
5832
5833         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5834         if (l->filelen % sizeof(*in))
5835                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5836         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5837         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5838         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5839         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5840         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5841         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5842         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5843         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5844         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5845         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5846         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5847         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5848         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5849         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]);
5850         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]);
5851
5852         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5853         if (l->filelen)
5854         {
5855                 if (l->filelen < count * (int)sizeof(*in))
5856                 {
5857                         Con_Printf("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]);
5858                         return; // ignore the grid if we cannot understand it
5859                 }
5860                 if (l->filelen != count * (int)sizeof(*in))
5861                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5862                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5863                 loadmodel->brushq3.data_lightgrid = out;
5864                 loadmodel->brushq3.num_lightgrid = count;
5865                 // no swapping or validation necessary
5866                 memcpy(out, in, count * (int)sizeof(*out));
5867
5868                 if(mod_q3bsp_sRGBlightmaps.integer)
5869                 {
5870                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5871                         {
5872                                 // TODO (should we do this, or should we instead knowingly render brighter in sRGB fallback mode?)
5873                                 for(i = 0; i < count; ++i)
5874                                 {
5875                                         // actually we do: Image_sRGBFloatFromLinear_Lightmap(Image_LinearFloatFromsRGBFloat(x))
5876                                         // neutral point is at Image_sRGBFloatFromLinearFloat(0.5)
5877                                         // so we need to map Image_sRGBFloatFromLinearFloat(0.5) to 0.5
5878                                         // factor is 0.5 / Image_sRGBFloatFromLinearFloat(0.5)
5879                                         out[i].ambientrgb[0] = (out[i].ambientrgb[0] * (int)173 + 128) / 255; // fixes neutral level
5880                                         out[i].ambientrgb[1] = (out[i].ambientrgb[1] * (int)173 + 128) / 255; // fixes neutral level
5881                                         out[i].ambientrgb[2] = (out[i].ambientrgb[2] * (int)173 + 128) / 255; // fixes neutral level
5882                                         out[i].diffusergb[0] = (out[i].diffusergb[0] * (int)173 + 128) / 255; // fixes neutral level
5883                                         out[i].diffusergb[1] = (out[i].diffusergb[1] * (int)173 + 128) / 255; // fixes neutral level
5884                                         out[i].diffusergb[2] = (out[i].diffusergb[2] * (int)173 + 128) / 255; // fixes neutral level
5885                                 }
5886                         }
5887                         else
5888                         {
5889                                 for(i = 0; i < count; ++i)
5890                                 {
5891                                         out[i].ambientrgb[0] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[0]) * 255.0f + 0.5f);
5892                                         out[i].ambientrgb[1] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[1]) * 255.0f + 0.5f);
5893                                         out[i].ambientrgb[2] = floor(Image_LinearFloatFromsRGB(out[i].ambientrgb[2]) * 255.0f + 0.5f);
5894                                         out[i].diffusergb[0] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[0]) * 255.0f + 0.5f);
5895                                         out[i].diffusergb[1] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[1]) * 255.0f + 0.5f);
5896                                         out[i].diffusergb[2] = floor(Image_LinearFloatFromsRGB(out[i].diffusergb[2]) * 255.0f + 0.5f);
5897                                 }
5898                         }
5899                 }
5900                 else
5901                 {
5902                         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
5903                         {
5904                                 for(i = 0; i < count; ++i)
5905                                 {
5906                                         out[i].ambientrgb[0] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[0]) * 255.0f + 0.5f);
5907                                         out[i].ambientrgb[1] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[1]) * 255.0f + 0.5f);
5908                                         out[i].ambientrgb[2] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].ambientrgb[2]) * 255.0f + 0.5f);
5909                                         out[i].diffusergb[0] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[0]) * 255.0f + 0.5f);
5910                                         out[i].diffusergb[1] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[1]) * 255.0f + 0.5f);
5911                                         out[i].diffusergb[2] = floor(Image_sRGBFloatFromLinear_Lightmap(out[i].diffusergb[2]) * 255.0f + 0.5f);
5912                                 }
5913                         }
5914                         else
5915                         {
5916                                 // all is good
5917                         }
5918                 }
5919         }
5920 }
5921
5922 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5923 {
5924         q3dpvs_t *in;
5925         int totalchains;
5926
5927         if (l->filelen == 0)
5928         {
5929                 int i;
5930                 // unvised maps often have cluster indices even without pvs, so check
5931                 // leafs to find real number of clusters
5932                 loadmodel->brush.num_pvsclusters = 1;
5933                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5934                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5935
5936                 // create clusters
5937                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5938                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5939                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5940                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5941                 return;
5942         }
5943
5944         in = (q3dpvs_t *)(mod_base + l->fileofs);
5945         if (l->filelen < 9)
5946                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5947
5948         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5949         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5950         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5951                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5952         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5953         if (l->filelen < totalchains + (int)sizeof(*in))
5954                 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);
5955
5956         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5957         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5958 }
5959
5960 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5961 {
5962         int i, j, k, index[3];
5963         float transformed[3], blend1, blend2, blend, stylescale = 1;
5964         q3dlightgrid_t *a, *s;
5965
5966         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5967         switch(vid.renderpath)
5968         {
5969         case RENDERPATH_GL20:
5970         case RENDERPATH_D3D9:
5971         case RENDERPATH_D3D10:
5972         case RENDERPATH_D3D11:
5973         case RENDERPATH_SOFT:
5974         case RENDERPATH_GLES2:
5975                 // LordHavoc: FIXME: is this true?
5976                 stylescale = 1; // added while render
5977                 break;
5978         case RENDERPATH_GL11:
5979         case RENDERPATH_GL13:
5980         case RENDERPATH_GLES1:
5981                 stylescale = r_refdef.scene.rtlightstylevalue[0];
5982                 break;
5983         }
5984
5985         if (!model->brushq3.num_lightgrid)
5986         {
5987                 ambientcolor[0] = stylescale;
5988                 ambientcolor[1] = stylescale;
5989                 ambientcolor[2] = stylescale;
5990                 return;
5991         }
5992
5993         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5994         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5995         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5996         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5997         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5998         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5999         index[0] = (int)floor(transformed[0]);
6000         index[1] = (int)floor(transformed[1]);
6001         index[2] = (int)floor(transformed[2]);
6002         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
6003
6004         // now lerp the values
6005         VectorClear(diffusenormal);
6006         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
6007         for (k = 0;k < 2;k++)
6008         {
6009                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
6010                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
6011                         continue;
6012                 for (j = 0;j < 2;j++)
6013                 {
6014                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
6015                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
6016                                 continue;
6017                         for (i = 0;i < 2;i++)
6018                         {
6019                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
6020                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
6021                                         continue;
6022                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
6023                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
6024                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
6025                                 // this uses the mod_md3_sin table because the values are
6026                                 // already in the 0-255 range, the 64+ bias fetches a cosine
6027                                 // instead of a sine value
6028                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
6029                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
6030                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
6031                                 //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)));
6032                         }
6033                 }
6034         }
6035
6036         // normalize the light direction before turning
6037         VectorNormalize(diffusenormal);
6038         //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]);
6039 }
6040
6041 static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
6042 {
6043         double t1, t2;
6044         double midf, mid[3];
6045         int ret, side;
6046
6047         // check for empty
6048         while (node->plane)
6049         {
6050                 // find the point distances
6051                 mplane_t *plane = node->plane;
6052                 if (plane->type < 3)
6053                 {
6054                         t1 = p1[plane->type] - plane->dist;
6055                         t2 = p2[plane->type] - plane->dist;
6056                 }
6057                 else
6058                 {
6059                         t1 = DotProduct (plane->normal, p1) - plane->dist;
6060                         t2 = DotProduct (plane->normal, p2) - plane->dist;
6061                 }
6062
6063                 if (t1 < 0)
6064                 {
6065                         if (t2 < 0)
6066                         {
6067                                 node = node->children[1];
6068                                 continue;
6069                         }
6070                         side = 1;
6071                 }
6072                 else
6073                 {
6074                         if (t2 >= 0)
6075                         {
6076                                 node = node->children[0];
6077                                 continue;
6078                         }
6079                         side = 0;
6080                 }
6081
6082                 midf = t1 / (t1 - t2);
6083                 VectorLerp(p1, midf, p2, mid);
6084
6085                 // recurse both sides, front side first
6086                 // return 2 if empty is followed by solid (hit something)
6087                 // do not return 2 if both are solid or both empty,
6088                 // or if start is solid and end is empty
6089                 // as these degenerate cases usually indicate the eye is in solid and
6090                 // should see the target point anyway
6091                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
6092                 if (ret != 0)
6093                         return ret;
6094                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
6095                 if (ret != 1)
6096                         return ret;
6097                 return 2;
6098         }
6099         return ((mleaf_t *)node)->clusterindex < 0;
6100 }
6101
6102 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
6103 {
6104         if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
6105         {
6106                 trace_t trace;
6107                 model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
6108                 return trace.fraction == 1;
6109         }
6110         else
6111         {
6112                 double tracestart[3], traceend[3];
6113                 VectorCopy(start, tracestart);
6114                 VectorCopy(end, traceend);
6115                 return !Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend);
6116         }
6117 }
6118
6119 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)
6120 {
6121         const bih_t *bih;
6122         const bih_leaf_t *leaf;
6123         const bih_node_t *node;
6124         const colbrushf_t *brush;
6125         int axis;
6126         int nodenum;
6127         int nodestackpos = 0;
6128         int nodestack[1024];
6129
6130         memset(trace, 0, sizeof(*trace));
6131         trace->fraction = 1;
6132         trace->realfraction = 1;
6133         trace->hitsupercontentsmask = hitsupercontentsmask;
6134
6135         bih = &model->collision_bih;
6136         if(!bih->nodes)
6137                 return;
6138
6139         nodenum = bih->rootnode;
6140         nodestack[nodestackpos++] = nodenum;
6141         while (nodestackpos)
6142         {
6143                 nodenum = nodestack[--nodestackpos];
6144                 node = bih->nodes + nodenum;
6145 #if 1
6146                 if (!BoxesOverlap(start, start, node->mins, node->maxs))
6147                         continue;
6148 #endif
6149                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
6150                 {
6151                         axis = node->type - BIH_SPLITX;
6152                         if (start[axis] >= node->frontmin)
6153                                 nodestack[nodestackpos++] = node->front;
6154                         if (start[axis] <= node->backmax)
6155                                 nodestack[nodestackpos++] = node->back;
6156                 }
6157                 else if (node->type == BIH_UNORDERED)
6158                 {
6159                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
6160                         {
6161                                 leaf = bih->leafs + node->children[axis];
6162 #if 1
6163                                 if (!BoxesOverlap(start, start, leaf->mins, leaf->maxs))
6164                                         continue;
6165 #endif
6166                                 switch(leaf->type)
6167                                 {
6168                                 case BIH_BRUSH:
6169                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6170                                         Collision_TracePointBrushFloat(trace, start, brush);
6171                                         break;
6172                                 case BIH_COLLISIONTRIANGLE:
6173                                         // collision triangle - skipped because they have no volume
6174                                         break;
6175                                 case BIH_RENDERTRIANGLE:
6176                                         // render triangle - skipped because they have no volume
6177                                         break;
6178                                 }
6179                         }
6180                 }
6181         }
6182 }
6183
6184 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, const bih_t *bih)
6185 {
6186         const bih_leaf_t *leaf;
6187         const bih_node_t *node;
6188         const colbrushf_t *brush;
6189         const int *e;
6190         const texture_t *texture;
6191         vec3_t nodebigmins, nodebigmaxs, nodestart, nodeend, sweepnodemins, sweepnodemaxs;
6192         vec_t d1, d2, d3, d4, f, nodestackline[1024][6];
6193         int axis, nodenum, nodestackpos = 0, nodestack[1024];
6194
6195         if(!bih->nodes)
6196                 return;
6197
6198         if (VectorCompare(start, end))
6199         {
6200                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6201                 return;
6202         }
6203
6204         nodenum = bih->rootnode;
6205
6206         memset(trace, 0, sizeof(*trace));
6207         trace->fraction = 1;
6208         trace->realfraction = 1;
6209         trace->hitsupercontentsmask = hitsupercontentsmask;
6210
6211         // push first node
6212         nodestackline[nodestackpos][0] = start[0];
6213         nodestackline[nodestackpos][1] = start[1];
6214         nodestackline[nodestackpos][2] = start[2];
6215         nodestackline[nodestackpos][3] = end[0];
6216         nodestackline[nodestackpos][4] = end[1];
6217         nodestackline[nodestackpos][5] = end[2];
6218         nodestack[nodestackpos++] = nodenum;
6219         while (nodestackpos)
6220         {
6221                 nodenum = nodestack[--nodestackpos];
6222                 node = bih->nodes + nodenum;
6223                 VectorCopy(nodestackline[nodestackpos], nodestart);
6224                 VectorCopy(nodestackline[nodestackpos] + 3, nodeend);
6225                 sweepnodemins[0] = min(nodestart[0], nodeend[0]); sweepnodemins[1] = min(nodestart[1], nodeend[1]); sweepnodemins[2] = min(nodestart[2], nodeend[2]); sweepnodemaxs[0] = max(nodestart[0], nodeend[0]); sweepnodemaxs[1] = max(nodestart[1], nodeend[1]); sweepnodemaxs[2] = max(nodestart[2], nodeend[2]);
6226                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs))
6227                         continue;
6228                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
6229                 {
6230                         // recurse children of the split
6231                         axis = node->type - BIH_SPLITX;
6232                         d1 = node->backmax - nodestart[axis];
6233                         d2 = node->backmax - nodeend[axis];
6234                         d3 = nodestart[axis] - node->frontmin;
6235                         d4 = nodeend[axis] - node->frontmin;
6236                         switch((d1 < 0) | ((d2 < 0) << 1) | ((d3 < 0) << 2) | ((d4 < 0) << 3))
6237                         {
6238                         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;
6239                         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;
6240                         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;
6241                         case  3: /* <<>> */                                                                                                                                                                                                                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6242                         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;
6243                         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;
6244                         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;
6245                         case  7: /* <<<> */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6246                         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;
6247                         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;
6248                         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;
6249                         case 11: /* <<>< */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6250                         case 12: /* >><< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6251                         case 13: /* <><< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6252                         case 14: /* ><<< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6253                         case 15: /* <<<< */                                                                                                                                                                                                                                                                                                                                                                                                   break;
6254                         }
6255                 }
6256                 else if (node->type == BIH_UNORDERED)
6257                 {
6258                         // calculate sweep bounds for this node
6259                         // copy node bounds into local variables
6260                         VectorCopy(node->mins, nodebigmins);
6261                         VectorCopy(node->maxs, nodebigmaxs);
6262                         // clip line to this node bounds
6263                         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); }
6264                         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); }
6265                         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); }
6266                         // some of the line intersected the enlarged node box
6267                         // calculate sweep bounds for this node
6268                         sweepnodemins[0] = min(nodestart[0], nodeend[0]); sweepnodemins[1] = min(nodestart[1], nodeend[1]); sweepnodemins[2] = min(nodestart[2], nodeend[2]); sweepnodemaxs[0] = max(nodestart[0], nodeend[0]); sweepnodemaxs[1] = max(nodestart[1], nodeend[1]); sweepnodemaxs[2] = max(nodestart[2], nodeend[2]);
6269                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
6270                         {
6271                                 leaf = bih->leafs + node->children[axis];
6272                                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, leaf->mins, leaf->maxs))
6273                                         continue;
6274                                 switch(leaf->type)
6275                                 {
6276                                 case BIH_BRUSH:
6277                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6278                                         Collision_TraceLineBrushFloat(trace, start, end, brush, brush);
6279                                         break;
6280                                 case BIH_COLLISIONTRIANGLE:
6281                                         if (!mod_q3bsp_curves_collisions.integer)
6282                                                 continue;
6283                                         e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
6284                                         texture = model->data_textures + leaf->textureindex;
6285                                         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);
6286                                         break;
6287                                 case BIH_RENDERTRIANGLE:
6288                                         e = model->surfmesh.data_element3i + 3*leaf->itemindex;
6289                                         texture = model->data_textures + leaf->textureindex;
6290                                         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);
6291                                         break;
6292                                 }
6293                         }
6294                 }
6295         }
6296 }
6297
6298 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)
6299 {
6300         if (VectorCompare(start, end))
6301         {
6302                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6303                 return;
6304         }
6305         Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, &model->collision_bih);
6306 }
6307
6308 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)
6309 {
6310         const bih_t *bih;
6311         const bih_leaf_t *leaf;
6312         const bih_node_t *node;
6313         const colbrushf_t *brush;
6314         const int *e;
6315         const texture_t *texture;
6316         vec3_t start, end, startmins, startmaxs, endmins, endmaxs, mins, maxs;
6317         vec3_t nodebigmins, nodebigmaxs, nodestart, nodeend, sweepnodemins, sweepnodemaxs;
6318         vec_t d1, d2, d3, d4, f, nodestackline[1024][6];
6319         int axis, nodenum, nodestackpos = 0, nodestack[1024];
6320
6321         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(thisbrush_start->mins, thisbrush_start->maxs) && VectorCompare(thisbrush_end->mins, thisbrush_end->maxs))
6322         {
6323                 if (VectorCompare(thisbrush_start->mins, thisbrush_end->mins))
6324                         Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, thisbrush_start->mins, hitsupercontentsmask);
6325                 else
6326                         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, thisbrush_start->mins, thisbrush_end->mins, hitsupercontentsmask);
6327                 return;
6328         }
6329
6330         bih = &model->collision_bih;
6331         if(!bih->nodes)
6332                 return;
6333         nodenum = bih->rootnode;
6334
6335         // box trace, performed as brush trace
6336         memset(trace, 0, sizeof(*trace));
6337         trace->fraction = 1;
6338         trace->realfraction = 1;
6339         trace->hitsupercontentsmask = hitsupercontentsmask;
6340
6341         // calculate tracebox-like parameters for efficient culling
6342         VectorMAM(0.5f, thisbrush_start->mins, 0.5f, thisbrush_start->maxs, start);
6343         VectorMAM(0.5f, thisbrush_end->mins, 0.5f, thisbrush_end->maxs, end);
6344         VectorSubtract(thisbrush_start->mins, start, startmins);
6345         VectorSubtract(thisbrush_start->maxs, start, startmaxs);
6346         VectorSubtract(thisbrush_end->mins, end, endmins);
6347         VectorSubtract(thisbrush_end->maxs, end, endmaxs);
6348         mins[0] = min(startmins[0], endmins[0]);
6349         mins[1] = min(startmins[1], endmins[1]);
6350         mins[2] = min(startmins[2], endmins[2]);
6351         maxs[0] = max(startmaxs[0], endmaxs[0]);
6352         maxs[1] = max(startmaxs[1], endmaxs[1]);
6353         maxs[2] = max(startmaxs[2], endmaxs[2]);
6354
6355         // push first node
6356         nodestackline[nodestackpos][0] = start[0];
6357         nodestackline[nodestackpos][1] = start[1];
6358         nodestackline[nodestackpos][2] = start[2];
6359         nodestackline[nodestackpos][3] = end[0];
6360         nodestackline[nodestackpos][4] = end[1];
6361         nodestackline[nodestackpos][5] = end[2];
6362         nodestack[nodestackpos++] = nodenum;
6363         while (nodestackpos)
6364         {
6365                 nodenum = nodestack[--nodestackpos];
6366                 node = bih->nodes + nodenum;
6367                 VectorCopy(nodestackline[nodestackpos], nodestart);
6368                 VectorCopy(nodestackline[nodestackpos] + 3, nodeend);
6369                 sweepnodemins[0] = min(nodestart[0], nodeend[0]) + mins[0]; sweepnodemins[1] = min(nodestart[1], nodeend[1]) + mins[1]; sweepnodemins[2] = min(nodestart[2], nodeend[2]) + mins[2]; sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + maxs[0]; sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + maxs[1]; sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + maxs[2];
6370                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs))
6371                         continue;
6372                 if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
6373                 {
6374                         // recurse children of the split
6375                         axis = node->type - BIH_SPLITX;
6376                         d1 = node->backmax - nodestart[axis] - mins[axis];
6377                         d2 = node->backmax - nodeend[axis] - mins[axis];
6378                         d3 = nodestart[axis] - node->frontmin + maxs[axis];
6379                         d4 = nodeend[axis] - node->frontmin + maxs[axis];
6380                         switch((d1 < 0) | ((d2 < 0) << 1) | ((d3 < 0) << 2) | ((d4 < 0) << 3))
6381                         {
6382                         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;
6383                         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;
6384                         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;
6385                         case  3: /* <<>> */                                                                                                                                                                                                                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6386                         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;
6387                         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;
6388                         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;
6389                         case  7: /* <<<> */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6390                         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;
6391                         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;
6392                         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;
6393                         case 11: /* <<>< */                                                                                                                                                                                                  f = d3 / (d3 - d4); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
6394                         case 12: /* >><< */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6395                         case 13: /* <><< */ f = d1 / (d1 - d2); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6396                         case 14: /* ><<< */ f = d1 / (d1 - d2); VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorLerp(nodestart, f, nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                                                                                                                                                                                                   break;
6397                         case 15: /* <<<< */                                                                                                                                                                                                                                                                                                                                                                                                   break;
6398                         }
6399                 }
6400                 else if (node->type == BIH_UNORDERED)
6401                 {
6402                         // calculate sweep bounds for this node
6403                         // copy node bounds into local variables and expand to get Minkowski Sum of the two shapes
6404                         VectorSubtract(node->mins, maxs, nodebigmins);
6405                         VectorSubtract(node->maxs, mins, nodebigmaxs);
6406                         // clip line to this node bounds
6407                         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); }
6408                         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); }
6409                         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); }
6410                         // some of the line intersected the enlarged node box
6411                         // calculate sweep bounds for this node
6412                         sweepnodemins[0] = min(nodestart[0], nodeend[0]) + mins[0]; sweepnodemins[1] = min(nodestart[1], nodeend[1]) + mins[1]; sweepnodemins[2] = min(nodestart[2], nodeend[2]) + mins[2]; sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + maxs[0]; sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + maxs[1]; sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + maxs[2];
6413                         for (axis = 0;axis < BIH_MAXUNORDEREDCHILDREN && node->children[axis] >= 0;axis++)
6414                         {
6415                                 leaf = bih->leafs + node->children[axis];
6416                                 if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, leaf->mins, leaf->maxs))
6417                                         continue;
6418                                 switch(leaf->type)
6419                                 {
6420                                 case BIH_BRUSH:
6421                                         brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6422                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
6423                                         break;
6424                                 case BIH_COLLISIONTRIANGLE:
6425                                         if (!mod_q3bsp_curves_collisions.integer)
6426                                                 continue;
6427                                         e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
6428                                         texture = model->data_textures + leaf->textureindex;
6429                                         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);
6430                                         break;
6431                                 case BIH_RENDERTRIANGLE:
6432                                         e = model->surfmesh.data_element3i + 3*leaf->itemindex;
6433                                         texture = model->data_textures + leaf->textureindex;
6434                                         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);
6435                                         break;
6436                                 }
6437                         }
6438                 }
6439         }
6440 }
6441
6442 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)
6443 {
6444         colboxbrushf_t thisbrush_start, thisbrush_end;
6445         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
6446
6447         // box trace, performed as brush trace
6448         VectorAdd(start, boxmins, boxstartmins);
6449         VectorAdd(start, boxmaxs, boxstartmaxs);
6450         VectorAdd(end, boxmins, boxendmins);
6451         VectorAdd(end, boxmaxs, boxendmaxs);
6452         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
6453         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
6454         Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask);
6455 }
6456
6457
6458 int Mod_CollisionBIH_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
6459 {
6460         trace_t trace;
6461         Mod_CollisionBIH_TracePoint(model, NULL, NULL, &trace, point, 0);
6462         return trace.startsupercontents;
6463 }
6464
6465 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)
6466 {
6467 #if 0
6468         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
6469         vec3_t end;
6470         int hitsupercontents;
6471         VectorSet(end, start[0], start[1], model->normalmins[2]);
6472 #endif
6473         memset(trace, 0, sizeof(*trace));
6474         trace->fraction = 1;
6475         trace->realfraction = 1;
6476         trace->hitsupercontentsmask = hitsupercontentsmask;
6477 #if 0
6478         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
6479         hitsupercontents = trace->hitsupercontents;
6480         memset(trace, 0, sizeof(*trace));
6481         trace->fraction = 1;
6482         trace->realfraction = 1;
6483         trace->hitsupercontentsmask = hitsupercontentsmask;
6484         trace->startsupercontents = hitsupercontents;
6485 #endif
6486 }
6487
6488 int Mod_CollisionBIH_PointSuperContents_Mesh(struct model_s *model, int frame, const vec3_t start)
6489 {
6490 #if 0
6491         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
6492         trace_t trace;
6493         vec3_t end;
6494         VectorSet(end, start[0], start[1], model->normalmins[2]);
6495         memset(&trace, 0, sizeof(trace));
6496         trace.fraction = 1;
6497         trace.realfraction = 1;
6498         trace.hitsupercontentsmask = 0;
6499         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
6500         return trace.hitsupercontents;
6501 #else
6502         return 0;
6503 #endif
6504 }
6505
6506 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
6507 {
6508         int i;
6509         mleaf_t *leaf;
6510         colbrushf_t *brush;
6511         // find which leaf the point is in
6512         while (node->plane)
6513                 node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
6514         // point trace the brushes
6515         leaf = (mleaf_t *)node;
6516         for (i = 0;i < leaf->numleafbrushes;i++)
6517         {
6518                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6519                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
6520                 {
6521                         brush->markframe = markframe;
6522                         Collision_TracePointBrushFloat(trace, point, brush);
6523                 }
6524         }
6525         // can't do point traces on curves (they have no thickness)
6526 }
6527
6528 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
6529 {
6530         int i, startside, endside;
6531         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
6532         mleaf_t *leaf;
6533         msurface_t *surface;
6534         mplane_t *plane;
6535         colbrushf_t *brush;
6536         // walk the tree until we hit a leaf, recursing for any split cases
6537         while (node->plane)
6538         {
6539 #if 0
6540                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
6541                         return;
6542                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[0], start, end, startfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6543                 node = node->children[1];
6544 #else
6545                 // abort if this part of the bsp tree can not be hit by this trace
6546 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6547 //                      return;
6548                 plane = node->plane;
6549                 // axial planes are much more common than non-axial, so an optimized
6550                 // axial case pays off here
6551                 if (plane->type < 3)
6552                 {
6553                         dist1 = start[plane->type] - plane->dist;
6554                         dist2 = end[plane->type] - plane->dist;
6555                 }
6556                 else
6557                 {
6558                         dist1 = DotProduct(start, plane->normal) - plane->dist;
6559                         dist2 = DotProduct(end, plane->normal) - plane->dist;
6560                 }
6561                 startside = dist1 < 0;
6562                 endside = dist2 < 0;
6563                 if (startside == endside)
6564                 {
6565                         // most of the time the line fragment is on one side of the plane
6566                         node = node->children[startside];
6567                 }
6568                 else
6569                 {
6570                         // line crosses node plane, split the line
6571                         dist1 = PlaneDiff(linestart, plane);
6572                         dist2 = PlaneDiff(lineend, plane);
6573                         midfrac = dist1 / (dist1 - dist2);
6574                         VectorLerp(linestart, midfrac, lineend, mid);
6575                         // take the near side first
6576                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6577                         // if we found an impact on the front side, don't waste time
6578                         // exploring the far side
6579                         if (midfrac <= trace->realfraction)
6580                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6581                         return;
6582                 }
6583 #endif
6584         }
6585         // abort if this part of the bsp tree can not be hit by this trace
6586 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6587 //              return;
6588         // hit a leaf
6589         nodesegmentmins[0] = min(start[0], end[0]) - 1;
6590         nodesegmentmins[1] = min(start[1], end[1]) - 1;
6591         nodesegmentmins[2] = min(start[2], end[2]) - 1;
6592         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
6593         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
6594         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
6595         // line trace the brushes
6596         leaf = (mleaf_t *)node;
6597 #if 0
6598         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6599                 return;
6600 #endif
6601         for (i = 0;i < leaf->numleafbrushes;i++)
6602         {
6603                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6604                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
6605                 {
6606                         brush->markframe = markframe;
6607                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
6608                 }
6609         }
6610         // can't do point traces on curves (they have no thickness)
6611         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
6612         {
6613                 // line trace the curves
6614                 for (i = 0;i < leaf->numleafsurfaces;i++)
6615                 {
6616                         surface = model->data_surfaces + leaf->firstleafsurface[i];
6617                         if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
6618                         {
6619                                 surface->deprecatedq3collisionmarkframe = markframe;
6620                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6621                         }
6622                 }
6623         }
6624 }
6625
6626 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
6627 {
6628         int i;
6629         int sides;
6630         mleaf_t *leaf;
6631         colbrushf_t *brush;
6632         msurface_t *surface;
6633         mplane_t *plane;
6634         float nodesegmentmins[3], nodesegmentmaxs[3];
6635         // walk the tree until we hit a leaf, recursing for any split cases
6636         while (node->plane)
6637         {
6638 #if 0
6639                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
6640                         return;
6641                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
6642                 node = node->children[1];
6643 #else
6644                 // abort if this part of the bsp tree can not be hit by this trace
6645 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6646 //                      return;
6647                 plane = node->plane;
6648                 // axial planes are much more common than non-axial, so an optimized
6649                 // axial case pays off here
6650                 if (plane->type < 3)
6651                 {
6652                         // this is an axial plane, compare bounding box directly to it and
6653                         // recurse sides accordingly
6654                         // recurse down node sides
6655                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
6656                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
6657                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
6658                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
6659                 }
6660                 else
6661                 {
6662                         // this is a non-axial plane, so check if the start and end boxes
6663                         // are both on one side of the plane to handle 'diagonal' cases
6664                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
6665                 }
6666                 if (sides == 3)
6667                 {
6668                         // segment crosses plane
6669                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
6670                         sides = 2;
6671                 }
6672                 // if sides == 0 then the trace itself is bogus (Not A Number values),
6673                 // in this case we simply pretend the trace hit nothing
6674                 if (sides == 0)
6675                         return; // ERROR: NAN bounding box!
6676                 // take whichever side the segment box is on
6677                 node = node->children[sides - 1];
6678 #endif
6679         }
6680         // abort if this part of the bsp tree can not be hit by this trace
6681 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6682 //              return;
6683         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
6684         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
6685         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
6686         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
6687         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
6688         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
6689         // hit a leaf
6690         leaf = (mleaf_t *)node;
6691 #if 0
6692         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6693                 return;
6694 #endif
6695         for (i = 0;i < leaf->numleafbrushes;i++)
6696         {
6697                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6698                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
6699                 {
6700                         brush->markframe = markframe;
6701                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
6702                 }
6703         }
6704         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
6705         {
6706                 for (i = 0;i < leaf->numleafsurfaces;i++)
6707                 {
6708                         surface = model->data_surfaces + leaf->firstleafsurface[i];
6709                         if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
6710                         {
6711                                 surface->deprecatedq3collisionmarkframe = markframe;
6712                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6713                         }
6714                 }
6715         }
6716 }
6717
6718
6719 static int markframe = 0;
6720
6721 static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
6722 {
6723         int i;
6724         q3mbrush_t *brush;
6725         memset(trace, 0, sizeof(*trace));
6726         trace->fraction = 1;
6727         trace->realfraction = 1;
6728         trace->hitsupercontentsmask = hitsupercontentsmask;
6729         if (mod_collision_bih.integer)
6730                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6731         else if (model->brush.submodel)
6732         {
6733                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6734                         if (brush->colbrushf)
6735                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
6736         }
6737         else
6738                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
6739 }
6740
6741 static void Mod_Q3BSP_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)
6742 {
6743         int i;
6744         float segmentmins[3], segmentmaxs[3];
6745         msurface_t *surface;
6746         q3mbrush_t *brush;
6747
6748         if (VectorCompare(start, end))
6749         {
6750                 Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6751                 return;
6752         }
6753
6754         memset(trace, 0, sizeof(*trace));
6755         trace->fraction = 1;
6756         trace->realfraction = 1;
6757         trace->hitsupercontentsmask = hitsupercontentsmask;
6758         segmentmins[0] = min(start[0], end[0]) - 1;
6759         segmentmins[1] = min(start[1], end[1]) - 1;
6760         segmentmins[2] = min(start[2], end[2]) - 1;
6761         segmentmaxs[0] = max(start[0], end[0]) + 1;
6762         segmentmaxs[1] = max(start[1], end[1]) + 1;
6763         segmentmaxs[2] = max(start[2], end[2]) + 1;
6764         if (mod_collision_bih.integer)
6765                 Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
6766         else if (model->brush.submodel)
6767         {
6768                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6769                         if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
6770                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
6771                 if (mod_q3bsp_curves_collisions.integer)
6772                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
6773                                 if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
6774                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6775         }
6776         else
6777                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
6778 }
6779
6780 void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *start, colbrushf_t *end, int hitsupercontentsmask)
6781 {
6782         float segmentmins[3], segmentmaxs[3];
6783         int i;
6784         msurface_t *surface;
6785         q3mbrush_t *brush;
6786
6787         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(start->mins, start->maxs) && VectorCompare(end->mins, end->maxs))
6788         {
6789                 if (VectorCompare(start->mins, end->mins))
6790                         Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start->mins, hitsupercontentsmask);
6791                 else
6792                         Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, start->mins, end->mins, hitsupercontentsmask);
6793                 return;
6794         }
6795
6796         // box trace, performed as brush trace
6797         memset(trace, 0, sizeof(*trace));
6798         trace->fraction = 1;
6799         trace->realfraction = 1;
6800         trace->hitsupercontentsmask = hitsupercontentsmask;
6801         segmentmins[0] = min(start->mins[0], end->mins[0]);
6802         segmentmins[1] = min(start->mins[1], end->mins[1]);
6803         segmentmins[2] = min(start->mins[2], end->mins[2]);
6804         segmentmaxs[0] = max(start->maxs[0], end->maxs[0]);
6805         segmentmaxs[1] = max(start->maxs[1], end->maxs[1]);
6806         segmentmaxs[2] = max(start->maxs[2], end->maxs[2]);
6807         if (mod_collision_bih.integer)
6808                 Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
6809         else if (model->brush.submodel)
6810         {
6811                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6812                         if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
6813                                 Collision_TraceBrushBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
6814                 if (mod_q3bsp_curves_collisions.integer)
6815                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
6816                                 if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
6817                                         Collision_TraceBrushTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6818         }
6819         else
6820                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, ++markframe, segmentmins, segmentmaxs);
6821 }
6822
6823 static void Mod_Q3BSP_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)
6824 {
6825         colboxbrushf_t thisbrush_start, thisbrush_end;
6826         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
6827
6828         // box trace, performed as brush trace
6829         VectorAdd(start, boxmins, boxstartmins);
6830         VectorAdd(start, boxmaxs, boxstartmaxs);
6831         VectorAdd(end, boxmins, boxendmins);
6832         VectorAdd(end, boxmaxs, boxendmaxs);
6833         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
6834         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
6835         Mod_Q3BSP_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask);
6836 }
6837
6838 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
6839 {
6840         int i;
6841         int supercontents = 0;
6842         q3mbrush_t *brush;
6843         if (mod_collision_bih.integer)
6844         {
6845                 trace_t trace;
6846                 Mod_Q3BSP_TracePoint(model, NULL, NULL, &trace, point, 0);
6847                 supercontents = trace.startsupercontents;
6848         }
6849         // test if the point is inside each brush
6850         else if (model->brush.submodel)
6851         {
6852                 // submodels are effectively one leaf
6853                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6854                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
6855                                 supercontents |= brush->colbrushf->supercontents;
6856         }
6857         else
6858         {
6859                 mnode_t *node = model->brush.data_nodes;
6860                 mleaf_t *leaf;
6861                 // find which leaf the point is in
6862                 while (node->plane)
6863                         node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
6864                 leaf = (mleaf_t *)node;
6865                 // now check the brushes in the leaf
6866                 for (i = 0;i < leaf->numleafbrushes;i++)
6867                 {
6868                         brush = model->brush.data_brushes + leaf->firstleafbrush[i];
6869                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
6870                                 supercontents |= brush->colbrushf->supercontents;
6871                 }
6872         }
6873         return supercontents;
6874 }
6875
6876 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)
6877 {
6878         Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, &model->render_bih);
6879 }
6880
6881
6882 bih_t *Mod_MakeCollisionBIH(dp_model_t *model, qboolean userendersurfaces, bih_t *out)
6883 {
6884         int j;
6885         int bihnumleafs;
6886         int bihmaxnodes;
6887         int brushindex;
6888         int triangleindex;
6889         int bihleafindex;
6890         int nummodelbrushes = model->nummodelbrushes;
6891         int nummodelsurfaces = model->nummodelsurfaces;
6892         const int *e;
6893         const int *collisionelement3i;
6894         const float *collisionvertex3f;
6895         const int *renderelement3i;
6896         const float *rendervertex3f;
6897         bih_leaf_t *bihleafs;
6898         bih_node_t *bihnodes;
6899         int *temp_leafsort;
6900         int *temp_leafsortscratch;
6901         const msurface_t *surface;
6902         const q3mbrush_t *brush;
6903
6904         // find out how many BIH leaf nodes we need
6905         bihnumleafs = 0;
6906         if (userendersurfaces)
6907         {
6908                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6909                         bihnumleafs += surface->num_triangles;
6910         }
6911         else
6912         {
6913                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
6914                         if (brush->colbrushf)
6915                                 bihnumleafs++;
6916                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6917                 {
6918                         if (surface->texture->basematerialflags & MATERIALFLAG_MESHCOLLISIONS)
6919                                 bihnumleafs += surface->num_triangles + surface->num_collisiontriangles;
6920                         else
6921                                 bihnumleafs += surface->num_collisiontriangles;
6922                 }
6923         }
6924
6925         if (!bihnumleafs)
6926                 return NULL;
6927
6928         // allocate the memory for the BIH leaf nodes
6929         bihleafs = (bih_leaf_t *)Mem_Alloc(loadmodel->mempool, sizeof(bih_leaf_t) * bihnumleafs);
6930
6931         // now populate the BIH leaf nodes
6932         bihleafindex = 0;
6933
6934         // add render surfaces
6935         renderelement3i = model->surfmesh.data_element3i;
6936         rendervertex3f = model->surfmesh.data_vertex3f;
6937         for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6938         {
6939                 for (triangleindex = 0, e = renderelement3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
6940                 {
6941                         if (!userendersurfaces && !(surface->texture->basematerialflags & MATERIALFLAG_MESHCOLLISIONS))
6942                                 continue;
6943                         bihleafs[bihleafindex].type = BIH_RENDERTRIANGLE;
6944                         bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
6945                         bihleafs[bihleafindex].surfaceindex = surface - model->data_surfaces;
6946                         bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firsttriangle;
6947                         bihleafs[bihleafindex].mins[0] = min(rendervertex3f[3*e[0]+0], min(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) - 1;
6948                         bihleafs[bihleafindex].mins[1] = min(rendervertex3f[3*e[0]+1], min(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) - 1;
6949                         bihleafs[bihleafindex].mins[2] = min(rendervertex3f[3*e[0]+2], min(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) - 1;
6950                         bihleafs[bihleafindex].maxs[0] = max(rendervertex3f[3*e[0]+0], max(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) + 1;
6951                         bihleafs[bihleafindex].maxs[1] = max(rendervertex3f[3*e[0]+1], max(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) + 1;
6952                         bihleafs[bihleafindex].maxs[2] = max(rendervertex3f[3*e[0]+2], max(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) + 1;
6953                         bihleafindex++;
6954                 }
6955         }
6956
6957         if (!userendersurfaces)
6958         {
6959                 // add collision brushes
6960                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
6961                 {
6962                         if (!brush->colbrushf)
6963                                 continue;
6964                         bihleafs[bihleafindex].type = BIH_BRUSH;
6965                         bihleafs[bihleafindex].textureindex = brush->texture - model->data_textures;
6966                         bihleafs[bihleafindex].surfaceindex = -1;
6967                         bihleafs[bihleafindex].itemindex = brushindex+model->firstmodelbrush;
6968                         VectorCopy(brush->colbrushf->mins, bihleafs[bihleafindex].mins);
6969                         VectorCopy(brush->colbrushf->maxs, bihleafs[bihleafindex].maxs);
6970                         bihleafindex++;
6971                 }
6972
6973                 // add collision surfaces
6974                 collisionelement3i = model->brush.data_collisionelement3i;
6975                 collisionvertex3f = model->brush.data_collisionvertex3f;
6976                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6977                 {
6978                         for (triangleindex = 0, e = collisionelement3i + 3*surface->num_firstcollisiontriangle;triangleindex < surface->num_collisiontriangles;triangleindex++, e += 3)
6979                         {
6980                                 bihleafs[bihleafindex].type = BIH_COLLISIONTRIANGLE;
6981                                 bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
6982                                 bihleafs[bihleafindex].surfaceindex = surface - model->data_surfaces;
6983                                 bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firstcollisiontriangle;
6984                                 bihleafs[bihleafindex].mins[0] = min(collisionvertex3f[3*e[0]+0], min(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) - 1;
6985                                 bihleafs[bihleafindex].mins[1] = min(collisionvertex3f[3*e[0]+1], min(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) - 1;
6986                                 bihleafs[bihleafindex].mins[2] = min(collisionvertex3f[3*e[0]+2], min(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) - 1;
6987                                 bihleafs[bihleafindex].maxs[0] = max(collisionvertex3f[3*e[0]+0], max(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) + 1;
6988                                 bihleafs[bihleafindex].maxs[1] = max(collisionvertex3f[3*e[0]+1], max(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) + 1;
6989                                 bihleafs[bihleafindex].maxs[2] = max(collisionvertex3f[3*e[0]+2], max(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) + 1;
6990                                 bihleafindex++;
6991                         }
6992                 }
6993         }
6994
6995         // allocate buffers for the produced and temporary data
6996         bihmaxnodes = bihnumleafs + 1;
6997         bihnodes = (bih_node_t *)Mem_Alloc(loadmodel->mempool, sizeof(bih_node_t) * bihmaxnodes);
6998         temp_leafsort = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int) * bihnumleafs * 2);
6999         temp_leafsortscratch = temp_leafsort + bihnumleafs;
7000
7001         // now build it
7002         BIH_Build(out, bihnumleafs, bihleafs, bihmaxnodes, bihnodes, temp_leafsort, temp_leafsortscratch);
7003
7004         // we're done with the temporary data
7005         Mem_Free(temp_leafsort);
7006
7007         // resize the BIH nodes array if it over-allocated
7008         if (out->maxnodes > out->numnodes)
7009         {
7010                 out->maxnodes = out->numnodes;
7011                 out->nodes = (bih_node_t *)Mem_Realloc(loadmodel->mempool, out->nodes, out->numnodes * sizeof(bih_node_t));
7012         }
7013
7014         return out;
7015 }
7016
7017 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
7018 {
7019         int supercontents = 0;
7020         if (nativecontents & CONTENTSQ3_SOLID)
7021                 supercontents |= SUPERCONTENTS_SOLID;
7022         if (nativecontents & CONTENTSQ3_WATER)
7023                 supercontents |= SUPERCONTENTS_WATER;
7024         if (nativecontents & CONTENTSQ3_SLIME)
7025                 supercontents |= SUPERCONTENTS_SLIME;
7026         if (nativecontents & CONTENTSQ3_LAVA)
7027                 supercontents |= SUPERCONTENTS_LAVA;
7028         if (nativecontents & CONTENTSQ3_BODY)
7029                 supercontents |= SUPERCONTENTS_BODY;
7030         if (nativecontents & CONTENTSQ3_CORPSE)
7031                 supercontents |= SUPERCONTENTS_CORPSE;
7032         if (nativecontents & CONTENTSQ3_NODROP)
7033                 supercontents |= SUPERCONTENTS_NODROP;
7034         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
7035                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
7036         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
7037                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
7038         if (nativecontents & CONTENTSQ3_DONOTENTER)
7039                 supercontents |= SUPERCONTENTS_DONOTENTER;
7040         if (nativecontents & CONTENTSQ3_BOTCLIP)
7041                 supercontents |= SUPERCONTENTS_BOTCLIP;
7042         if (!(nativecontents & CONTENTSQ3_TRANSLUCENT))
7043                 supercontents |= SUPERCONTENTS_OPAQUE;
7044         return supercontents;
7045 }
7046
7047 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
7048 {
7049         int nativecontents = 0;
7050         if (supercontents & SUPERCONTENTS_SOLID)
7051                 nativecontents |= CONTENTSQ3_SOLID;
7052         if (supercontents & SUPERCONTENTS_WATER)
7053                 nativecontents |= CONTENTSQ3_WATER;
7054         if (supercontents & SUPERCONTENTS_SLIME)
7055                 nativecontents |= CONTENTSQ3_SLIME;
7056         if (supercontents & SUPERCONTENTS_LAVA)
7057                 nativecontents |= CONTENTSQ3_LAVA;
7058         if (supercontents & SUPERCONTENTS_BODY)
7059                 nativecontents |= CONTENTSQ3_BODY;
7060         if (supercontents & SUPERCONTENTS_CORPSE)
7061                 nativecontents |= CONTENTSQ3_CORPSE;
7062         if (supercontents & SUPERCONTENTS_NODROP)
7063                 nativecontents |= CONTENTSQ3_NODROP;
7064         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
7065                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
7066         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
7067                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
7068         if (supercontents & SUPERCONTENTS_DONOTENTER)
7069                 nativecontents |= CONTENTSQ3_DONOTENTER;
7070         if (supercontents & SUPERCONTENTS_BOTCLIP)
7071                 nativecontents |= CONTENTSQ3_BOTCLIP;
7072         if (!(supercontents & SUPERCONTENTS_OPAQUE))
7073                 nativecontents |= CONTENTSQ3_TRANSLUCENT;
7074         return nativecontents;
7075 }
7076
7077 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
7078 {
7079         int numleafs;
7080         while (node->plane)
7081         {
7082                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
7083                 node = node->children[1];
7084         }
7085         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
7086         if (loadmodel->brush.num_leafs < numleafs)
7087                 loadmodel->brush.num_leafs = numleafs;
7088 }
7089
7090 void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7091 {
7092         int i, j, lumps;
7093         q3dheader_t *header;
7094         float corner[3], yawradius, modelradius;
7095
7096         mod->modeldatatypestring = "Q3BSP";
7097
7098         mod->type = mod_brushq3;
7099         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
7100         mod->numskins = 1;
7101
7102         header = (q3dheader_t *)buffer;
7103         if((char *) bufferend < (char *) buffer + sizeof(q3dheader_t))
7104                 Host_Error("Mod_Q3BSP_Load: %s is smaller than its header", mod->name);
7105
7106         i = LittleLong(header->version);
7107         if (i != Q3BSPVERSION && i != Q3BSPVERSION_IG && i != Q3BSPVERSION_LIVE)
7108                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
7109
7110         mod->soundfromcenter = true;
7111         mod->TraceBox = Mod_Q3BSP_TraceBox;
7112         mod->TraceBrush = Mod_Q3BSP_TraceBrush;
7113         mod->TraceLine = Mod_Q3BSP_TraceLine;
7114         mod->TracePoint = Mod_Q3BSP_TracePoint;
7115         mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
7116         mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
7117         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
7118         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
7119         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
7120         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
7121         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
7122         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
7123         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
7124         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
7125         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
7126         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
7127         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
7128         mod->brush.AmbientSoundLevelsForPoint = NULL;
7129         mod->brush.RoundUpToHullSize = NULL;
7130         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
7131         mod->Draw = R_Q1BSP_Draw;
7132         mod->DrawDepth = R_Q1BSP_DrawDepth;
7133         mod->DrawDebug = R_Q1BSP_DrawDebug;
7134         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
7135         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
7136         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
7137         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
7138         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
7139         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
7140         mod->DrawLight = R_Q1BSP_DrawLight;
7141
7142         mod_base = (unsigned char *)header;
7143
7144         // swap all the lumps
7145         header->ident = LittleLong(header->ident);
7146         header->version = LittleLong(header->version);
7147         lumps = (header->version == Q3BSPVERSION_LIVE) ? Q3HEADER_LUMPS_LIVE : Q3HEADER_LUMPS;
7148         for (i = 0;i < lumps;i++)
7149         {
7150                 j = (header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs));
7151                 if((char *) bufferend < (char *) buffer + j)
7152                         Host_Error("Mod_Q3BSP_Load: %s has a lump that starts outside the file!", mod->name);
7153                 j += (header->lumps[i].filelen = LittleLong(header->lumps[i].filelen));
7154                 if((char *) bufferend < (char *) buffer + j)
7155                         Host_Error("Mod_Q3BSP_Load: %s has a lump that ends outside the file!", mod->name);
7156         }
7157         /*
7158          * NO, do NOT clear them!
7159          * they contain actual data referenced by other stuff.
7160          * Instead, before using the advertisements lump, check header->versio
7161          * again!
7162          * Sorry, but otherwise it breaks memory of the first lump.
7163         for (i = lumps;i < Q3HEADER_LUMPS_MAX;i++)
7164         {
7165                 header->lumps[i].fileofs = 0;
7166                 header->lumps[i].filelen = 0;
7167         }
7168         */
7169
7170         mod->brush.qw_md4sum = 0;
7171         mod->brush.qw_md4sum2 = 0;
7172         for (i = 0;i < lumps;i++)
7173         {
7174                 if (i == Q3LUMP_ENTITIES)
7175                         continue;
7176                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
7177                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
7178                         continue;
7179                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
7180
7181                 // all this checksumming can take a while, so let's send keepalives here too
7182                 CL_KeepaliveMessage(false);
7183         }
7184
7185         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
7186         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
7187         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
7188         if (header->version == Q3BSPVERSION_IG)
7189                 Mod_Q3BSP_LoadBrushSides_IG(&header->lumps[Q3LUMP_BRUSHSIDES]);
7190         else
7191                 Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
7192         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
7193         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
7194         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
7195         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
7196         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
7197         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
7198         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
7199         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
7200         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
7201         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
7202         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
7203         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
7204         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
7205         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
7206
7207         // the MakePortals code works fine on the q3bsp data as well
7208         if (mod_bsp_portalize.integer)
7209                 Mod_Q1BSP_MakePortals();
7210
7211         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
7212         loadmodel->brush.supportwateralpha = true;
7213
7214         // make a single combined shadow mesh to allow optimized shadow volume creation
7215         Mod_Q1BSP_CreateShadowMesh(loadmodel);
7216
7217         loadmodel->brush.num_leafs = 0;
7218         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
7219
7220         if (loadmodel->brush.numsubmodels)
7221                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
7222
7223         mod = loadmodel;
7224         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
7225         {
7226                 if (i > 0)
7227                 {
7228                         char name[10];
7229                         // duplicate the basic information
7230                         dpsnprintf(name, sizeof(name), "*%i", i);
7231                         mod = Mod_FindName(name, loadmodel->name);
7232                         // copy the base model to this one
7233                         *mod = *loadmodel;
7234                         // rename the clone back to its proper name
7235                         strlcpy(mod->name, name, sizeof(mod->name));
7236                         mod->brush.parentmodel = loadmodel;
7237                         // textures and memory belong to the main model
7238                         mod->texturepool = NULL;
7239                         mod->mempool = NULL;
7240                         mod->brush.GetPVS = NULL;
7241                         mod->brush.FatPVS = NULL;
7242                         mod->brush.BoxTouchingPVS = NULL;
7243                         mod->brush.BoxTouchingLeafPVS = NULL;
7244                         mod->brush.BoxTouchingVisibleLeafs = NULL;
7245                         mod->brush.FindBoxClusters = NULL;
7246                         mod->brush.LightPoint = NULL;
7247                         mod->brush.AmbientSoundLevelsForPoint = NULL;
7248                 }
7249                 mod->brush.submodel = i;
7250                 if (loadmodel->brush.submodels)
7251                         loadmodel->brush.submodels[i] = mod;
7252
7253                 // make the model surface list (used by shadowing/lighting)
7254                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
7255                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
7256                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
7257                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
7258                 mod->sortedmodelsurfaces = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
7259                 Mod_MakeSortedSurfaces(mod);
7260
7261                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
7262                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
7263                 // enlarge the bounding box to enclose all geometry of this model,
7264                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
7265                 // which can in turn mess up the farclip (as well as culling when
7266                 // outside the level - an unimportant concern)
7267
7268                 //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]);
7269                 for (j = 0;j < mod->nummodelsurfaces;j++)
7270                 {
7271                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
7272                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
7273                         int k;
7274                         if (!surface->num_vertices)
7275                                 continue;
7276                         for (k = 0;k < surface->num_vertices;k++, v += 3)
7277                         {
7278                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
7279                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
7280                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
7281                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
7282                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
7283                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
7284                         }
7285                 }
7286                 //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]);
7287                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
7288                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
7289                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
7290                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
7291                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
7292                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
7293                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
7294                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
7295                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
7296                 mod->yawmins[2] = mod->normalmins[2];
7297                 mod->yawmaxs[2] = mod->normalmaxs[2];
7298                 mod->radius = modelradius;
7299                 mod->radius2 = modelradius * modelradius;
7300
7301                 // this gets altered below if sky or water is used
7302                 mod->DrawSky = NULL;
7303                 mod->DrawAddWaterPlanes = NULL;
7304
7305                 for (j = 0;j < mod->nummodelsurfaces;j++)
7306                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
7307                                 break;
7308                 if (j < mod->nummodelsurfaces)
7309                         mod->DrawSky = R_Q1BSP_DrawSky;
7310
7311                 for (j = 0;j < mod->nummodelsurfaces;j++)
7312                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
7313                                 break;
7314                 if (j < mod->nummodelsurfaces)
7315                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
7316
7317                 Mod_MakeCollisionBIH(mod, false, &mod->collision_bih);
7318                 Mod_MakeCollisionBIH(mod, true, &mod->render_bih);
7319
7320                 // generate VBOs and other shared data before cloning submodels
7321                 if (i == 0)
7322                         Mod_BuildVBOs();
7323         }
7324
7325         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);
7326 }
7327
7328 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7329 {
7330         int i = LittleLong(((int *)buffer)[1]);
7331         if (i == Q3BSPVERSION || i == Q3BSPVERSION_IG || i == Q3BSPVERSION_LIVE)
7332                 Mod_Q3BSP_Load(mod,buffer, bufferend);
7333         else if (i == Q2BSPVERSION)
7334                 Mod_Q2BSP_Load(mod,buffer, bufferend);
7335         else
7336                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
7337 }
7338
7339 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7340 {
7341         Host_Error("Mod_MAP_Load: not yet implemented");
7342 }
7343
7344 typedef struct objvertex_s
7345 {
7346         int nextindex;
7347         int submodelindex;
7348         int textureindex;
7349         float v[3];
7350         float vt[2];
7351         float vn[3];
7352 }
7353 objvertex_t;
7354
7355 static unsigned char nobsp_pvs[1] = {1};
7356
7357 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
7358 {
7359         const char *textbase = (char *)buffer, *text = textbase;
7360         char *s;
7361         char *argv[512];
7362         char line[1024];
7363         char materialname[MAX_QPATH];
7364         int i, j, l, numvertices, firstvertex, firsttriangle, elementindex, vertexindex, surfacevertices, surfacetriangles, surfaceelements, submodelindex = 0;
7365         int index1, index2, index3;
7366         objvertex_t vfirst, vprev, vcurrent;
7367         int argc;
7368         int linelen;
7369         int numtriangles = 0;
7370         int maxtriangles = 0;
7371         objvertex_t *vertices = NULL;
7372         int linenumber = 0;
7373         int maxtextures = 0, numtextures = 0, textureindex = 0;
7374         int maxv = 0, numv = 1;
7375         int maxvt = 0, numvt = 1;
7376         int maxvn = 0, numvn = 1;
7377         char *texturenames = NULL;
7378         float dist, modelradius, modelyawradius, yawradius;
7379         float *v = NULL;
7380         float *vt = NULL;
7381         float *vn = NULL;
7382         float mins[3];
7383         float maxs[3];
7384         float corner[3];
7385         objvertex_t *thisvertex = NULL;
7386         int vertexhashindex;
7387         int *vertexhashtable = NULL;
7388         objvertex_t *vertexhashdata = NULL;
7389         objvertex_t *vdata = NULL;
7390         int vertexhashsize = 0;
7391         int vertexhashcount = 0;
7392         skinfile_t *skinfiles = NULL;
7393         unsigned char *data = NULL;
7394         int *submodelfirstsurface;
7395         msurface_t *surface;
7396         msurface_t *tempsurfaces;
7397
7398         memset(&vfirst, 0, sizeof(vfirst));
7399         memset(&vprev, 0, sizeof(vprev));
7400         memset(&vcurrent, 0, sizeof(vcurrent));
7401
7402         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
7403
7404         loadmodel->modeldatatypestring = "OBJ";
7405
7406         loadmodel->type = mod_obj;
7407         loadmodel->soundfromcenter = true;
7408         loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
7409         loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
7410         loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
7411         loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
7412         loadmodel->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
7413         loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
7414         loadmodel->brush.TraceLineOfSight = NULL;
7415         loadmodel->brush.SuperContentsFromNativeContents = NULL;
7416         loadmodel->brush.NativeContentsFromSuperContents = NULL;
7417         loadmodel->brush.GetPVS = NULL;
7418         loadmodel->brush.FatPVS = NULL;
7419         loadmodel->brush.BoxTouchingPVS = NULL;
7420         loadmodel->brush.BoxTouchingLeafPVS = NULL;
7421         loadmodel->brush.BoxTouchingVisibleLeafs = NULL;
7422         loadmodel->brush.FindBoxClusters = NULL;
7423         loadmodel->brush.LightPoint = NULL;
7424         loadmodel->brush.FindNonSolidLocation = NULL;
7425         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
7426         loadmodel->brush.RoundUpToHullSize = NULL;
7427         loadmodel->brush.PointInLeaf = NULL;
7428         loadmodel->Draw = R_Q1BSP_Draw;
7429         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
7430         loadmodel->DrawDebug = R_Q1BSP_DrawDebug;
7431         loadmodel->DrawPrepass = R_Q1BSP_DrawPrepass;
7432         loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
7433         loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
7434         loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
7435         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
7436         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
7437         loadmodel->DrawLight = R_Q1BSP_DrawLight;
7438
7439         skinfiles = Mod_LoadSkinFiles();
7440         if (loadmodel->numskins < 1)
7441                 loadmodel->numskins = 1;
7442
7443         // make skinscenes for the skins (no groups)
7444         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
7445         for (i = 0;i < loadmodel->numskins;i++)
7446         {
7447                 loadmodel->skinscenes[i].firstframe = i;
7448                 loadmodel->skinscenes[i].framecount = 1;
7449                 loadmodel->skinscenes[i].loop = true;
7450                 loadmodel->skinscenes[i].framerate = 10;
7451         }
7452
7453         VectorClear(mins);
7454         VectorClear(maxs);
7455
7456         // we always have model 0, i.e. the first "submodel"
7457         loadmodel->brush.numsubmodels = 1;
7458
7459         // parse the OBJ text now
7460         for(;;)
7461         {
7462                 static char emptyarg[1] = "";
7463                 if (!*text)
7464                         break;
7465                 linenumber++;
7466                 linelen = 0;
7467                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
7468                         line[linelen] = text[linelen];
7469                 line[linelen] = 0;
7470                 for (argc = 0;argc < 4;argc++)
7471                         argv[argc] = emptyarg;
7472                 argc = 0;
7473                 s = line;
7474                 while (*s == ' ' || *s == '\t')
7475                         s++;
7476                 while (*s)
7477                 {
7478                         argv[argc++] = s;
7479                         while (*s > ' ')
7480                                 s++;
7481                         if (!*s)
7482                                 break;
7483                         *s++ = 0;
7484                         while (*s == ' ' || *s == '\t')
7485                                 s++;
7486                 }
7487                 text += linelen;
7488                 if (*text == '\r')
7489                         text++;
7490                 if (*text == '\n')
7491                         text++;
7492                 if (!argc)
7493                         continue;
7494                 if (argv[0][0] == '#')
7495                         continue;
7496                 if (!strcmp(argv[0], "v"))
7497                 {
7498                         if (maxv <= numv)
7499                         {
7500                                 maxv = max(maxv * 2, 1024);
7501                                 v = (float *)Mem_Realloc(tempmempool, v, maxv * sizeof(float[3]));
7502                         }
7503                         v[numv*3+0] = atof(argv[1]);
7504                         v[numv*3+2] = atof(argv[2]);
7505                         v[numv*3+1] = atof(argv[3]);
7506                         numv++;
7507                 }
7508                 else if (!strcmp(argv[0], "vt"))
7509                 {
7510                         if (maxvt <= numvt)
7511                         {
7512                                 maxvt = max(maxvt * 2, 1024);
7513                                 vt = (float *)Mem_Realloc(tempmempool, vt, maxvt * sizeof(float[2]));
7514                         }
7515                         vt[numvt*2+0] = atof(argv[1]);
7516                         vt[numvt*2+1] = 1-atof(argv[2]);
7517                         numvt++;
7518                 }
7519                 else if (!strcmp(argv[0], "vn"))
7520                 {
7521                         if (maxvn <= numvn)
7522                         {
7523                                 maxvn = max(maxvn * 2, 1024);
7524                                 vn = (float *)Mem_Realloc(tempmempool, vn, maxvn * sizeof(float[3]));
7525                         }
7526                         vn[numvn*3+0] = atof(argv[1]);
7527                         vn[numvn*3+2] = atof(argv[2]);
7528                         vn[numvn*3+1] = atof(argv[3]);
7529                         numvn++;
7530                 }
7531                 else if (!strcmp(argv[0], "f"))
7532                 {
7533                         if (!numtextures)
7534                         {
7535                                 if (maxtextures <= numtextures)
7536                                 {
7537                                         maxtextures = max(maxtextures * 2, 256);
7538                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
7539                                 }
7540                                 textureindex = numtextures++;
7541                                 strlcpy(texturenames + textureindex*MAX_QPATH, loadmodel->name, MAX_QPATH);
7542                         }
7543                         for (j = 1;j < argc;j++)
7544                         {
7545                                 index1 = atoi(argv[j]);
7546                                 while(argv[j][0] && argv[j][0] != '/')
7547                                         argv[j]++;
7548                                 if (argv[j][0])
7549                                         argv[j]++;
7550                                 index2 = atoi(argv[j]);
7551                                 while(argv[j][0] && argv[j][0] != '/')
7552                                         argv[j]++;
7553                                 if (argv[j][0])
7554                                         argv[j]++;
7555                                 index3 = atoi(argv[j]);
7556                                 // negative refers to a recent vertex
7557                                 // zero means not specified
7558                                 // positive means an absolute vertex index
7559                                 if (index1 < 0)
7560                                         index1 = numv - index1;
7561                                 if (index2 < 0)
7562                                         index2 = numvt - index2;
7563                                 if (index3 < 0)
7564                                         index3 = numvn - index3;
7565                                 vcurrent.nextindex = -1;
7566                                 vcurrent.textureindex = textureindex;
7567                                 vcurrent.submodelindex = submodelindex;
7568                                 if (v && index1 >= 0 && index1 < numv)
7569                                         VectorCopy(v + 3*index1, vcurrent.v);
7570                                 if (vt && index2 >= 0 && index2 < numvt)
7571                                         Vector2Copy(vt + 2*index2, vcurrent.vt);
7572                                 if (vn && index3 >= 0 && index3 < numvn)
7573                                         VectorCopy(vn + 3*index3, vcurrent.vn);
7574                                 if (numtriangles == 0)
7575                                 {
7576                                         VectorCopy(vcurrent.v, mins);
7577                                         VectorCopy(vcurrent.v, maxs);
7578                                 }
7579                                 else
7580                                 {
7581                                         mins[0] = min(mins[0], vcurrent.v[0]);
7582                                         mins[1] = min(mins[1], vcurrent.v[1]);
7583                                         mins[2] = min(mins[2], vcurrent.v[2]);
7584                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
7585                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
7586                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
7587                                 }
7588                                 if (j == 1)
7589                                         vfirst = vcurrent;
7590                                 else if (j >= 3)
7591                                 {
7592                                         if (maxtriangles <= numtriangles)
7593                                         {
7594                                                 maxtriangles = max(maxtriangles * 2, 32768);
7595                                                 vertices = (objvertex_t*)Mem_Realloc(loadmodel->mempool, vertices, maxtriangles * sizeof(objvertex_t[3]));
7596                                         }
7597                                         vertices[numtriangles*3+0] = vfirst;
7598                                         vertices[numtriangles*3+1] = vprev;
7599                                         vertices[numtriangles*3+2] = vcurrent;
7600                                         numtriangles++;
7601                                 }
7602                                 vprev = vcurrent;
7603                         }
7604                 }
7605                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
7606                 {
7607                         submodelindex = atof(argv[1]);
7608                         loadmodel->brush.numsubmodels = max(submodelindex + 1, loadmodel->brush.numsubmodels);
7609                 }
7610                 else if (!strcmp(argv[0], "usemtl"))
7611                 {
7612                         for (i = 0;i < numtextures;i++)
7613                                 if (!strcmp(texturenames+i*MAX_QPATH, argv[1]))
7614                                         break;
7615                         if (i < numtextures)
7616                                 textureindex = i;
7617                         else
7618                         {
7619                                 if (maxtextures <= numtextures)
7620                                 {
7621                                         maxtextures = max(maxtextures * 2, 256);
7622                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
7623                                 }
7624                                 textureindex = numtextures++;
7625                                 strlcpy(texturenames + textureindex*MAX_QPATH, argv[1], MAX_QPATH);
7626                         }
7627                 }
7628         }
7629
7630         // now that we have the OBJ data loaded as-is, we can convert it
7631
7632         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
7633         VectorCopy(mins, loadmodel->normalmins);
7634         VectorCopy(maxs, loadmodel->normalmaxs);
7635         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
7636         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
7637         modelyawradius = dist*dist+modelyawradius*modelyawradius;
7638         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
7639         modelradius = modelyawradius + modelradius * modelradius;
7640         modelyawradius = sqrt(modelyawradius);
7641         modelradius = sqrt(modelradius);
7642         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
7643         loadmodel->yawmins[2] = loadmodel->normalmins[2];
7644         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
7645         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
7646         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
7647         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
7648         loadmodel->radius = modelradius;
7649         loadmodel->radius2 = modelradius * modelradius;
7650
7651         // allocate storage for triangles
7652         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, numtriangles * sizeof(int[3]));
7653         // allocate vertex hash structures to build an optimal vertex subset
7654         vertexhashsize = numtriangles*2;
7655         vertexhashtable = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int) * vertexhashsize);
7656         memset(vertexhashtable, 0xFF, sizeof(int) * vertexhashsize);
7657         vertexhashdata = (objvertex_t *)Mem_Alloc(loadmodel->mempool, sizeof(*vertexhashdata) * numtriangles*3);
7658         vertexhashcount = 0;
7659
7660         // gather surface stats for assigning vertex/triangle ranges
7661         firstvertex = 0;
7662         firsttriangle = 0;
7663         elementindex = 0;
7664         loadmodel->num_surfaces = 0;
7665         // allocate storage for the worst case number of surfaces, later we resize
7666         tempsurfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, numtextures * loadmodel->brush.numsubmodels * sizeof(msurface_t));
7667         submodelfirstsurface = (int *)Mem_Alloc(loadmodel->mempool, (loadmodel->brush.numsubmodels+1) * sizeof(int));
7668         surface = tempsurfaces;
7669         for (submodelindex = 0;submodelindex < loadmodel->brush.numsubmodels;submodelindex++)
7670         {
7671                 submodelfirstsurface[submodelindex] = loadmodel->num_surfaces;
7672                 for (textureindex = 0;textureindex < numtextures;textureindex++)
7673                 {
7674                         for (vertexindex = 0;vertexindex < numtriangles*3;vertexindex++)
7675                         {
7676                                 thisvertex = vertices + vertexindex;
7677                                 if (thisvertex->submodelindex == submodelindex && thisvertex->textureindex == textureindex)
7678                                         break;
7679                         }
7680                         // skip the surface creation if there are no triangles for it
7681                         if (vertexindex == numtriangles*3)
7682                                 continue;
7683                         // create a surface for these vertices
7684                         surfacevertices = 0;
7685                         surfaceelements = 0;
7686                         // we hack in a texture index in the surface to be fixed up later...
7687                         surface->texture = (texture_t *)((size_t)textureindex);
7688                         // calculate bounds as we go
7689                         VectorCopy(thisvertex->v, surface->mins);
7690                         VectorCopy(thisvertex->v, surface->maxs);
7691                         for (;vertexindex < numtriangles*3;vertexindex++)
7692                         {
7693                                 thisvertex = vertices + vertexindex;
7694                                 if (thisvertex->submodelindex != submodelindex)
7695                                         continue;
7696                                 if (thisvertex->textureindex != textureindex)
7697                                         continue;
7698                                 // add vertex to surface bounds
7699                                 surface->mins[0] = min(surface->mins[0], thisvertex->v[0]);
7700                                 surface->mins[1] = min(surface->mins[1], thisvertex->v[1]);
7701                                 surface->mins[2] = min(surface->mins[2], thisvertex->v[2]);
7702                                 surface->maxs[0] = max(surface->maxs[0], thisvertex->v[0]);
7703                                 surface->maxs[1] = max(surface->maxs[1], thisvertex->v[1]);
7704                                 surface->maxs[2] = max(surface->maxs[2], thisvertex->v[2]);
7705                                 // add the vertex if it is not found in the merged set, and
7706                                 // get its index (triangle element) for the surface
7707                                 vertexhashindex = (unsigned int)(thisvertex->v[0] * 3571 + thisvertex->v[0] * 1777 + thisvertex->v[0] * 457) % (unsigned int)vertexhashsize;
7708                                 for (i = vertexhashtable[vertexhashindex];i >= 0;i = vertexhashdata[i].nextindex)
7709                                 {
7710                                         vdata = vertexhashdata + i;
7711                                         if (vdata->submodelindex == thisvertex->submodelindex && vdata->textureindex == thisvertex->textureindex && VectorCompare(thisvertex->v, vdata->v) && VectorCompare(thisvertex->vn, vdata->vn) && Vector2Compare(thisvertex->vt, vdata->vt))
7712                                                 break;
7713                                 }
7714                                 if (i < 0)
7715                                 {
7716                                         i = vertexhashcount++;
7717                                         vdata = vertexhashdata + i;
7718                                         *vdata = *thisvertex;
7719                                         vdata->nextindex = vertexhashtable[vertexhashindex];
7720                                         vertexhashtable[vertexhashindex] = i;
7721                                         surfacevertices++;
7722                                 }
7723                                 loadmodel->surfmesh.data_element3i[elementindex++] = i;
7724                                 surfaceelements++;
7725                         }
7726                         surfacetriangles = surfaceelements / 3;
7727                         surface->num_vertices = surfacevertices;
7728                         surface->num_triangles = surfacetriangles;
7729                         surface->num_firstvertex = firstvertex;
7730                         surface->num_firsttriangle = firsttriangle;
7731                         firstvertex += surface->num_vertices;
7732                         firsttriangle += surface->num_triangles;
7733                         surface++;
7734                         loadmodel->num_surfaces++;
7735                 }
7736         }
7737         submodelfirstsurface[submodelindex] = loadmodel->num_surfaces;
7738         numvertices = firstvertex;
7739         loadmodel->data_surfaces = (msurface_t *)Mem_Realloc(loadmodel->mempool, tempsurfaces, loadmodel->num_surfaces * sizeof(msurface_t));
7740         tempsurfaces = NULL;
7741
7742         // allocate storage for final mesh data
7743         loadmodel->num_textures = numtextures * loadmodel->numskins;
7744         loadmodel->num_texturesperskin = numtextures;
7745         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) + (r_enableshadowvolumes.integer ? numtriangles * sizeof(int[3]) : 0) + numvertices * sizeof(float[14]) + loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
7746         loadmodel->brush.submodels = (dp_model_t **)data;data += loadmodel->brush.numsubmodels * sizeof(dp_model_t *);
7747         loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
7748         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
7749         loadmodel->surfmesh.num_vertices = numvertices;
7750         loadmodel->surfmesh.num_triangles = numtriangles;
7751         if (r_enableshadowvolumes.integer)
7752                 loadmodel->surfmesh.data_neighbor3i = (int *)data;data += numtriangles * sizeof(int[3]);
7753         loadmodel->surfmesh.data_vertex3f = (float *)data;data += numvertices * sizeof(float[3]);
7754         loadmodel->surfmesh.data_svector3f = (float *)data;data += numvertices * sizeof(float[3]);
7755         loadmodel->surfmesh.data_tvector3f = (float *)data;data += numvertices * sizeof(float[3]);
7756         loadmodel->surfmesh.data_normal3f = (float *)data;data += numvertices * sizeof(float[3]);
7757         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += numvertices * sizeof(float[2]);
7758         if (loadmodel->surfmesh.num_vertices <= 65536)
7759                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
7760
7761         for (j = 0;j < loadmodel->surfmesh.num_vertices;j++)
7762         {
7763                 VectorCopy(vertexhashdata[j].v, loadmodel->surfmesh.data_vertex3f + 3*j);
7764                 VectorCopy(vertexhashdata[j].vn, loadmodel->surfmesh.data_normal3f + 3*j);
7765                 Vector2Copy(vertexhashdata[j].vt, loadmodel->surfmesh.data_texcoordtexture2f + 2*j);
7766         }
7767
7768         // load the textures
7769         for (textureindex = 0;textureindex < numtextures;textureindex++)
7770                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + textureindex, skinfiles, texturenames + textureindex*MAX_QPATH, texturenames + textureindex*MAX_QPATH);
7771         Mod_FreeSkinFiles(skinfiles);
7772
7773         // set the surface textures to their real values now that we loaded them...
7774         for (i = 0;i < loadmodel->num_surfaces;i++)
7775                 loadmodel->data_surfaces[i].texture = loadmodel->data_textures + (size_t)loadmodel->data_surfaces[i].texture;
7776
7777         // free data
7778         Mem_Free(vertices);
7779         Mem_Free(texturenames);
7780         Mem_Free(v);
7781         Mem_Free(vt);
7782         Mem_Free(vn);
7783         Mem_Free(vertexhashtable);
7784         Mem_Free(vertexhashdata);
7785
7786         // make a single combined shadow mesh to allow optimized shadow volume creation
7787         Mod_Q1BSP_CreateShadowMesh(loadmodel);
7788
7789         // compute all the mesh information that was not loaded from the file
7790         if (loadmodel->surfmesh.data_element3s)
7791                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
7792                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
7793         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
7794         // generate normals if the file did not have them
7795         if (!VectorLength2(loadmodel->surfmesh.data_normal3f))
7796                 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);
7797         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);
7798         if (loadmodel->surfmesh.data_neighbor3i)
7799                 Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
7800
7801         // if this is a worldmodel and has no BSP tree, create a fake one for the purpose
7802         loadmodel->brush.num_visleafs = 1;
7803         loadmodel->brush.num_leafs = 1;
7804         loadmodel->brush.num_nodes = 0;
7805         loadmodel->brush.num_leafsurfaces = loadmodel->num_surfaces;
7806         loadmodel->brush.data_leafs = (mleaf_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafs * sizeof(mleaf_t));
7807         loadmodel->brush.data_nodes = (mnode_t *)loadmodel->brush.data_leafs;
7808         loadmodel->brush.num_pvsclusters = 1;
7809         loadmodel->brush.num_pvsclusterbytes = 1;
7810         loadmodel->brush.data_pvsclusters = nobsp_pvs;
7811         //if (loadmodel->num_nodes) loadmodel->data_nodes = (mnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_nodes * sizeof(mnode_t));
7812         //loadmodel->data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->num_leafsurfaces * sizeof(int));
7813         loadmodel->brush.data_leafsurfaces = loadmodel->sortedmodelsurfaces;
7814         VectorCopy(loadmodel->normalmins, loadmodel->brush.data_leafs->mins);
7815         VectorCopy(loadmodel->normalmaxs, loadmodel->brush.data_leafs->maxs);
7816         loadmodel->brush.data_leafs->combinedsupercontents = 0; // FIXME?
7817         loadmodel->brush.data_leafs->clusterindex = 0;
7818         loadmodel->brush.data_leafs->areaindex = 0;
7819         loadmodel->brush.data_leafs->numleafsurfaces = loadmodel->brush.num_leafsurfaces;
7820         loadmodel->brush.data_leafs->firstleafsurface = loadmodel->brush.data_leafsurfaces;
7821         loadmodel->brush.data_leafs->numleafbrushes = 0;
7822         loadmodel->brush.data_leafs->firstleafbrush = NULL;
7823         loadmodel->brush.supportwateralpha = true;
7824
7825         if (loadmodel->brush.numsubmodels)
7826                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
7827
7828         mod = loadmodel;
7829         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
7830         {
7831                 if (i > 0)
7832                 {
7833                         char name[10];
7834                         // duplicate the basic information
7835                         dpsnprintf(name, sizeof(name), "*%i", i);
7836                         mod = Mod_FindName(name, loadmodel->name);
7837                         // copy the base model to this one
7838                         *mod = *loadmodel;
7839                         // rename the clone back to its proper name
7840                         strlcpy(mod->name, name, sizeof(mod->name));
7841                         mod->brush.parentmodel = loadmodel;
7842                         // textures and memory belong to the main model
7843                         mod->texturepool = NULL;
7844                         mod->mempool = NULL;
7845                         mod->brush.GetPVS = NULL;
7846                         mod->brush.FatPVS = NULL;
7847                         mod->brush.BoxTouchingPVS = NULL;
7848                         mod->brush.BoxTouchingLeafPVS = NULL;
7849                         mod->brush.BoxTouchingVisibleLeafs = NULL;
7850                         mod->brush.FindBoxClusters = NULL;
7851                         mod->brush.LightPoint = NULL;
7852                         mod->brush.AmbientSoundLevelsForPoint = NULL;
7853                 }
7854                 mod->brush.submodel = i;
7855                 if (loadmodel->brush.submodels)
7856                         loadmodel->brush.submodels[i] = mod;
7857
7858                 // make the model surface list (used by shadowing/lighting)
7859                 mod->firstmodelsurface = submodelfirstsurface[i];
7860                 mod->nummodelsurfaces = submodelfirstsurface[i+1] - submodelfirstsurface[i];
7861                 mod->firstmodelbrush = 0;
7862                 mod->nummodelbrushes = 0;
7863                 mod->sortedmodelsurfaces = loadmodel->sortedmodelsurfaces + mod->firstmodelsurface;
7864                 Mod_MakeSortedSurfaces(mod);
7865
7866                 VectorClear(mod->normalmins);
7867                 VectorClear(mod->normalmaxs);
7868                 l = false;
7869                 for (j = 0;j < mod->nummodelsurfaces;j++)
7870                 {
7871                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
7872                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
7873                         int k;
7874                         if (!surface->num_vertices)
7875                                 continue;
7876                         if (!l)
7877                         {
7878                                 l = true;
7879                                 VectorCopy(v, mod->normalmins);
7880                                 VectorCopy(v, mod->normalmaxs);
7881                         }
7882                         for (k = 0;k < surface->num_vertices;k++, v += 3)
7883                         {
7884                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
7885                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
7886                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
7887                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
7888                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
7889                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
7890                         }
7891                 }
7892                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
7893                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
7894                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
7895                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
7896                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
7897                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
7898                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
7899                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
7900                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
7901                 mod->yawmins[2] = mod->normalmins[2];
7902                 mod->yawmaxs[2] = mod->normalmaxs[2];
7903                 mod->radius = modelradius;
7904                 mod->radius2 = modelradius * modelradius;
7905
7906                 // this gets altered below if sky or water is used
7907                 mod->DrawSky = NULL;
7908                 mod->DrawAddWaterPlanes = NULL;
7909
7910                 for (j = 0;j < mod->nummodelsurfaces;j++)
7911                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
7912                                 break;
7913                 if (j < mod->nummodelsurfaces)
7914                         mod->DrawSky = R_Q1BSP_DrawSky;
7915
7916                 for (j = 0;j < mod->nummodelsurfaces;j++)
7917                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
7918                                 break;
7919                 if (j < mod->nummodelsurfaces)
7920                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
7921
7922                 Mod_MakeCollisionBIH(mod, true, &mod->collision_bih);
7923                 mod->render_bih = mod->collision_bih;
7924
7925                 // generate VBOs and other shared data before cloning submodels
7926                 if (i == 0)
7927                         Mod_BuildVBOs();
7928         }
7929         mod = loadmodel;
7930         Mem_Free(submodelfirstsurface);
7931
7932         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);
7933 }
7934
7935 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, dp_model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
7936 {
7937         // we already have done PVS culling at this point...
7938         // so we don't need to do it again.
7939
7940         int i;
7941         vec3_t testorigin, mins, maxs;
7942
7943         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
7944         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
7945         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
7946
7947         if(model->brush.TraceLineOfSight(model, eye, testorigin))
7948                 return 1;
7949
7950         // expand the box a little
7951         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
7952         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
7953         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
7954         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
7955         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
7956         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
7957
7958         for(i = 0; i != numsamples; ++i)
7959         {
7960                 testorigin[0] = lhrandom(mins[0], maxs[0]);
7961                 testorigin[1] = lhrandom(mins[1], maxs[1]);
7962                 testorigin[2] = lhrandom(mins[2], maxs[2]);
7963
7964                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
7965                         return 1;
7966         }
7967
7968         return 0;
7969 }
7970