gl_rsurf.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 // r_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23 #include "r_shadow.h"
  24 #include "portals.h"
  25 #include "csprogs.h"
  26 #include "image.h"
  27
  28 cvar_t r_ambient = {0, "r_ambient", "0", "brightens map, value is 0-128"};
  29 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
  30 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
  31 cvar_t r_useportalculling = {0, "r_useportalculling", "2", "improve framerate with r_novis 1 by using portal culling - still not as good as compiled visibility data in the map, but it helps (a value of 2 forces use of this even with vis data, which improves framerates in maps without too much complexity, but hurts in extremely complex maps, which is why 2 is not the default mode)"};
  32 cvar_t r_usesurfaceculling = {0, "r_usesurfaceculling", "1", "skip off-screen surfaces (1 = cull surfaces if the map is likely to benefit, 2 = always cull surfaces)"};
  33 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
  34
  35 /*
  36 ===============
  37 R_BuildLightMap
  38
  39 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  40 ===============
  41 */
  42 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  43 {
  44         int smax, tmax, i, size, size3, maps, l;
  45         int *bl, scale;
  46         unsigned char *lightmap, *out, *stain;
  47         dp_model_t *model = ent->model;
  48         int *intblocklights;
  49         unsigned char *templight;
  50
  51         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  52         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  53         size = smax*tmax;
  54         size3 = size*3;
  55
  56         r_refdef.stats.lightmapupdatepixels += size;
  57         r_refdef.stats.lightmapupdates++;
  58
  59         if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
  60         {
  61                 cl.buildlightmapmemorysize = size*sizeof(int[3]);
  62                 if (cl.buildlightmapmemory)
  63                         Mem_Free(cl.buildlightmapmemory);
  64                 cl.buildlightmapmemory = (unsigned char *) Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
  65         }
  66
  67         // these both point at the same buffer, templight is only used for final
  68         // processing and can replace the intblocklights data as it goes
  69         intblocklights = (int *)cl.buildlightmapmemory;
  70         templight = (unsigned char *)cl.buildlightmapmemory;
  71
  72         // update cached lighting info
  73         model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = false;
  74
  75         lightmap = surface->lightmapinfo->samples;
  76
  77 // set to full bright if no light data
  78         bl = intblocklights;
  79         if (!model->brushq1.lightdata)
  80         {
  81                 for (i = 0;i < size3;i++)
  82                         bl[i] = 128*256;
  83         }
  84         else
  85         {
  86 // clear to no light
  87                 memset(bl, 0, size3*sizeof(*bl));
  88
  89 // add all the lightmaps
  90                 if (lightmap)
  91                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  92                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  93                                         bl[i] += lightmap[i] * scale;
  94         }
  95
  96         stain = surface->lightmapinfo->stainsamples;
  97         bl = intblocklights;
  98         out = templight;
  99         // the >> 16 shift adjusts down 8 bits to account for the stainmap
 100         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 101         // be doubled during rendering to achieve 2x overbright
 102         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 103         if (stain)
 104         {
 105                 for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 106                 {
 107                         l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
 108                         l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
 109                         l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
 110                         out[3] = 255;
 111                 }
 112         }
 113         else
 114         {
 115                 for (i = 0;i < size;i++, bl += 3, out += 4)
 116                 {
 117                         l = bl[0] >> 8;out[2] = min(l, 255);
 118                         l = bl[1] >> 8;out[1] = min(l, 255);
 119                         l = bl[2] >> 8;out[0] = min(l, 255);
 120                         out[3] = 255;
 121                 }
 122         }
 123
 124         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
 125                 Image_MakesRGBColorsFromLinear_Lightmap(templight, templight, size);
 126         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 127
 128         // update the surface's deluxemap if it has one
 129         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 130         {
 131                 vec3_t n;
 132                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 133                 lightmap = surface->lightmapinfo->samples;
 134                 // clear to no normalmap
 135                 bl = intblocklights;
 136                 memset(bl, 0, size3*sizeof(*bl));
 137                 // add all the normalmaps
 138                 if (lightmap && normalmap)
 139                 {
 140                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 141                         {
 142                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 143                                 {
 144                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 145                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 146                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 147                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 148                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 149                                 }
 150                         }
 151                 }
 152                 bl = intblocklights;
 153                 out = templight;
 154                 // we simply renormalize the weighted normals to get a valid deluxemap
 155                 for (i = 0;i < size;i++, bl += 3, out += 4)
 156                 {
 157                         VectorCopy(bl, n);
 158                         VectorNormalize(n);
 159                         l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
 160                         l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
 161                         l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
 162                         out[3] = 255;
 163                 }
 164                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 165         }
 166 }
 167
 168 void R_StainNode (mnode_t *node, dp_model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 169 {
 170         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 171         msurface_t *surface, *endsurface;
 172         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 173         unsigned char *bl;
 174         vec3_t impact;
 175
 176         maxdist = radius * radius;
 177         invradius = 1.0f / radius;
 178
 179 loc0:
 180         if (!node->plane)
 181                 return;
 182         ndist = PlaneDiff(origin, node->plane);
 183         if (ndist > radius)
 184         {
 185                 node = node->children[0];
 186                 goto loc0;
 187         }
 188         if (ndist < -radius)
 189         {
 190                 node = node->children[1];
 191                 goto loc0;
 192         }
 193
 194         dist2 = ndist * ndist;
 195         maxdist3 = maxdist - dist2;
 196
 197         if (node->plane->type < 3)
 198         {
 199                 VectorCopy(origin, impact);
 200                 impact[node->plane->type] -= ndist;
 201         }
 202         else
 203         {
 204                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 205                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 206                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 207         }
 208
 209         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 210         {
 211                 if (surface->lightmapinfo->stainsamples)
 212                 {
 213                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 214                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 215
 216                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 217                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 218
 219                         s = bound(0, impacts, smax * 16) - impacts;
 220                         t = bound(0, impactt, tmax * 16) - impactt;
 221                         i = (int)(s * s + t * t + dist2);
 222                         if ((i > maxdist) || (smax > (int)(sizeof(sdtable)/sizeof(sdtable[0])))) // smax overflow fix from Andreas Dehmel
 223                                 continue;
 224
 225                         // reduce calculations
 226                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 227                                 sdtable[s] = i * i + dist2;
 228
 229                         bl = surface->lightmapinfo->stainsamples;
 230                         smax3 = smax * 3;
 231                         stained = false;
 232
 233                         i = impactt;
 234                         for (t = 0;t < tmax;t++, i -= 16)
 235                         {
 236                                 td = i * i;
 237                                 // make sure some part of it is visible on this line
 238                                 if (td < maxdist3)
 239                                 {
 240                                         maxdist2 = maxdist - td;
 241                                         for (s = 0;s < smax;s++)
 242                                         {
 243                                                 if (sdtable[s] < maxdist2)
 244                                                 {
 245                                                         ratio = lhrandom(0.0f, 1.0f);
 246                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 247                                                         if (a >= (1.0f / 64.0f))
 248                                                         {
 249                                                                 if (a > 1)
 250                                                                         a = 1;
 251                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 252                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 253                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 254                                                                 stained = true;
 255                                                         }
 256                                                 }
 257                                                 bl += 3;
 258                                         }
 259                                 }
 260                                 else // skip line
 261                                         bl += smax3;
 262                         }
 263                         // force lightmap upload
 264                         if (stained)
 265                                 model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = true;
 266                 }
 267         }
 268
 269         if (node->children[0]->plane)
 270         {
 271                 if (node->children[1]->plane)
 272                 {
 273                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 274                         node = node->children[1];
 275                         goto loc0;
 276                 }
 277                 else
 278                 {
 279                         node = node->children[0];
 280                         goto loc0;
 281                 }
 282         }
 283         else if (node->children[1]->plane)
 284         {
 285                 node = node->children[1];
 286                 goto loc0;
 287         }
 288 }
 289
 290 void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 291 {
 292         int n;
 293         float fcolor[8];
 294         entity_render_t *ent;
 295         dp_model_t *model;
 296         vec3_t org;
 297         if (r_refdef.scene.worldmodel == NULL || !r_refdef.scene.worldmodel->brush.data_nodes || !r_refdef.scene.worldmodel->brushq1.lightdata)
 298                 return;
 299         fcolor[0] = cr1;
 300         fcolor[1] = cg1;
 301         fcolor[2] = cb1;
 302         fcolor[3] = ca1 * (1.0f / 64.0f);
 303         fcolor[4] = cr2 - cr1;
 304         fcolor[5] = cg2 - cg1;
 305         fcolor[6] = cb2 - cb1;
 306         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 307
 308         R_StainNode(r_refdef.scene.worldmodel->brush.data_nodes + r_refdef.scene.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.scene.worldmodel, origin, radius, fcolor);
 309
 310         // look for embedded bmodels
 311         for (n = 0;n < cl.num_brushmodel_entities;n++)
 312         {
 313                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 314                 model = ent->model;
 315                 if (model && model->name[0] == '*')
 316                 {
 317                         if (model->brush.data_nodes)
 318                         {
 319                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 320                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 321                         }
 322                 }
 323         }
 324 }
 325
 326
 327 /*
 328 =============================================================
 329
 330         BRUSH MODELS
 331
 332 =============================================================
 333 */
 334
 335 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 336 {
 337         // due to the hacky nature of this function's parameters, this is never
 338         // called with a batch, so numsurfaces is always 1, and the surfacelist
 339         // contains only a leaf number for coloring purposes
 340         const mportal_t *portal = (mportal_t *)ent;
 341         qboolean isvis;
 342         int i, numpoints;
 343         float *v;
 344         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 345         CHECKGLERROR
 346         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 347         GL_DepthMask(false);
 348         GL_DepthRange(0, 1);
 349         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 350         GL_DepthTest(true);
 351         GL_CullFace(GL_NONE);
 352         R_EntityMatrix(&identitymatrix);
 353
 354         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 355
 356 //      R_Mesh_ResetTextureState();
 357
 358         isvis = (portal->here->clusterindex >= 0 && portal->past->clusterindex >= 0 && portal->here->clusterindex != portal->past->clusterindex);
 359
 360         i = surfacelist[0] >> 1;
 361         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 362                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 363                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 364                          isvis ? 0.125f : 0.03125f);
 365         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 366                 VectorCopy(portal->points[i].position, v);
 367         R_Mesh_PrepareVertices_Generic_Arrays(numpoints, vertex3f, NULL, NULL);
 368         R_SetupShader_Generic_NoTexture(false, false);
 369         R_Mesh_Draw(0, numpoints, 0, numpoints - 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
 370 }
 371
 372 // LordHavoc: this is just a nice debugging tool, very slow
 373 void R_DrawPortals(void)
 374 {
 375         int i, leafnum;
 376         mportal_t *portal;
 377         float center[3], f;
 378         dp_model_t *model = r_refdef.scene.worldmodel;
 379         if (model == NULL)
 380                 return;
 381         for (leafnum = 0;leafnum < r_refdef.scene.worldmodel->brush.num_leafs;leafnum++)
 382         {
 383                 if (r_refdef.viewcache.world_leafvisible[leafnum])
 384                 {
 385                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 386                         for (portal = r_refdef.scene.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 387                         {
 388                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 389                                 if (!R_CullBox(portal->mins, portal->maxs))
 390                                 {
 391                                         VectorClear(center);
 392                                         for (i = 0;i < portal->numpoints;i++)
 393                                                 VectorAdd(center, portal->points[i].position, center);
 394                                         f = ixtable[portal->numpoints];
 395                                         VectorScale(center, f, center);
 396                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 397                                 }
 398                         }
 399                 }
 400         }
 401 }
 402
 403 static void R_View_WorldVisibility_CullSurfaces(void)
 404 {
 405         int surfaceindex;
 406         int surfaceindexstart;
 407         int surfaceindexend;
 408         unsigned char *surfacevisible;
 409         msurface_t *surfaces;
 410         dp_model_t *model = r_refdef.scene.worldmodel;
 411         if (!model)
 412                 return;
 413         if (r_trippy.integer)
 414                 return;
 415         if (r_usesurfaceculling.integer < 1)
 416                 return;
 417         surfaceindexstart = model->firstmodelsurface;
 418         surfaceindexend = surfaceindexstart + model->nummodelsurfaces;
 419         surfaces = model->data_surfaces;
 420         surfacevisible = r_refdef.viewcache.world_surfacevisible;
 421         for (surfaceindex = surfaceindexstart;surfaceindex < surfaceindexend;surfaceindex++)
 422                 if (surfacevisible[surfaceindex] && R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs))
 423                         surfacevisible[surfaceindex] = 0;
 424 }
 425
 426 void R_View_WorldVisibility(qboolean forcenovis)
 427 {
 428         int i, j, *mark;
 429         mleaf_t *leaf;
 430         mleaf_t *viewleaf;
 431         dp_model_t *model = r_refdef.scene.worldmodel;
 432
 433         if (!model)
 434                 return;
 435
 436         if (r_refdef.view.usecustompvs)
 437         {
 438                 // clear the visible surface and leaf flags arrays
 439                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 440                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 441                 r_refdef.viewcache.world_novis = false;
 442
 443                 // simply cull each marked leaf to the frustum (view pyramid)
 444                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 445                 {
 446                         // if leaf is in current pvs and on the screen, mark its surfaces
 447                         if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 448                         {
 449                                 r_refdef.stats.world_leafs++;
 450                                 r_refdef.viewcache.world_leafvisible[j] = true;
 451                                 if (leaf->numleafsurfaces)
 452                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 453                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 454                         }
 455                 }
 456                 R_View_WorldVisibility_CullSurfaces();
 457                 return;
 458         }
 459
 460         // if possible find the leaf the view origin is in
 461         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_refdef.view.origin) : NULL;
 462         // if possible fetch the visible cluster bits
 463         if (!r_lockpvs.integer && model->brush.FatPVS)
 464                 model->brush.FatPVS(model, r_refdef.view.origin, 2, r_refdef.viewcache.world_pvsbits, (r_refdef.viewcache.world_numclusters+7)>>3, false);
 465
 466         if (!r_lockvisibility.integer)
 467         {
 468                 // clear the visible surface and leaf flags arrays
 469                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 470                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 471
 472                 r_refdef.viewcache.world_novis = false;
 473
 474                 // if floating around in the void (no pvs data available, and no
 475                 // portals available), simply use all on-screen leafs.
 476                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || r_trippy.integer)
 477                 {
 478                         // no visibility method: (used when floating around in the void)
 479                         // simply cull each leaf to the frustum (view pyramid)
 480                         // similar to quake's RecursiveWorldNode but without cache misses
 481                         r_refdef.viewcache.world_novis = true;
 482                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 483                         {
 484                                 if (leaf->clusterindex < 0)
 485                                         continue;
 486                                 // if leaf is in current pvs and on the screen, mark its surfaces
 487                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 488                                 {
 489                                         r_refdef.stats.world_leafs++;
 490                                         r_refdef.viewcache.world_leafvisible[j] = true;
 491                                         if (leaf->numleafsurfaces)
 492                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 493                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 494                                 }
 495                         }
 496                 }
 497                 // just check if each leaf in the PVS is on screen
 498                 // (unless portal culling is enabled)
 499                 else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 500                 {
 501                         // pvs method:
 502                         // simply check if each leaf is in the Potentially Visible Set,
 503                         // and cull to frustum (view pyramid)
 504                         // similar to quake's RecursiveWorldNode but without cache misses
 505                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 506                         {
 507                                 if (leaf->clusterindex < 0)
 508                                         continue;
 509                                 // if leaf is in current pvs and on the screen, mark its surfaces
 510                                 if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 511                                 {
 512                                         r_refdef.stats.world_leafs++;
 513                                         r_refdef.viewcache.world_leafvisible[j] = true;
 514                                         if (leaf->numleafsurfaces)
 515                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 516                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 517                                 }
 518                         }
 519                 }
 520                 // if desired use a recursive portal flow, culling each portal to
 521                 // frustum and checking if the leaf the portal leads to is in the pvs
 522                 else
 523                 {
 524                         int leafstackpos;
 525                         mportal_t *p;
 526                         mleaf_t *leafstack[8192];
 527                         // simple-frustum portal method:
 528                         // follows portals leading outward from viewleaf, does not venture
 529                         // offscreen or into leafs that are not visible, faster than
 530                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 531                         // often culls some surfaces that pvs alone would miss
 532                         // (such as a room in pvs that is hidden behind a wall, but the
 533                         //  passage leading to the room is off-screen)
 534                         leafstack[0] = viewleaf;
 535                         leafstackpos = 1;
 536                         while (leafstackpos)
 537                         {
 538                                 leaf = leafstack[--leafstackpos];
 539                                 if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 540                                         continue;
 541                                 if (leaf->clusterindex < 0)
 542                                         continue;
 543                                 r_refdef.stats.world_leafs++;
 544                                 r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 545                                 // mark any surfaces bounding this leaf
 546                                 if (leaf->numleafsurfaces)
 547                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 548                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 549                                 // follow portals into other leafs
 550                                 // the checks are:
 551                                 // if viewer is behind portal (portal faces outward into the scene)
 552                                 // and the portal polygon's bounding box is on the screen
 553                                 // and the leaf has not been visited yet
 554                                 // and the leaf is visible in the pvs
 555                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 556                                 for (p = leaf->portals;p;p = p->next)
 557                                 {
 558                                         r_refdef.stats.world_portals++;
 559                                         if (DotProduct(r_refdef.view.origin, p->plane.normal) < (p->plane.dist + 1)
 560                                          && !r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs]
 561                                          && CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex)
 562                                          && !R_CullBox(p->mins, p->maxs)
 563                                          && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 564                                                 leafstack[leafstackpos++] = p->past;
 565                                 }
 566                         }
 567                 }
 568         }
 569
 570         R_View_WorldVisibility_CullSurfaces();
 571 }
 572
 573 void R_Q1BSP_DrawSky(entity_render_t *ent)
 574 {
 575         if (ent->model == NULL)
 576                 return;
 577         if (ent == r_refdef.scene.worldentity)
 578                 R_DrawWorldSurfaces(true, true, false, false, false);
 579         else
 580                 R_DrawModelSurfaces(ent, true, true, false, false, false);
 581 }
 582
 583 extern void R_Water_AddWaterPlane(msurface_t *surface, int entno);
 584 void R_Q1BSP_DrawAddWaterPlanes(entity_render_t *ent)
 585 {
 586         int i, j, n, flagsmask;
 587         dp_model_t *model = ent->model;
 588         msurface_t *surfaces;
 589         if (model == NULL)
 590                 return;
 591
 592         if (ent == r_refdef.scene.worldentity)
 593                 RSurf_ActiveWorldEntity();
 594         else
 595                 RSurf_ActiveModelEntity(ent, true, false, false);
 596
 597         surfaces = model->data_surfaces;
 598         flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
 599
 600         // add visible surfaces to draw list
 601         if (ent == r_refdef.scene.worldentity)
 602         {
 603                 for (i = 0;i < model->nummodelsurfaces;i++)
 604                 {
 605                         j = model->sortedmodelsurfaces[i];
 606                         if (r_refdef.viewcache.world_surfacevisible[j])
 607                                 if (surfaces[j].texture->basematerialflags & flagsmask)
 608                                         R_Water_AddWaterPlane(surfaces + j, 0);
 609                 }
 610         }
 611         else
 612         {
 613                 if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
 614                         n = ent->entitynumber;
 615                 else
 616                         n = 0;
 617                 for (i = 0;i < model->nummodelsurfaces;i++)
 618                 {
 619                         j = model->sortedmodelsurfaces[i];
 620                         if (surfaces[j].texture->basematerialflags & flagsmask)
 621                                 R_Water_AddWaterPlane(surfaces + j, n);
 622                 }
 623         }
 624         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
 625 }
 626
 627 void R_Q1BSP_Draw(entity_render_t *ent)
 628 {
 629         dp_model_t *model = ent->model;
 630         if (model == NULL)
 631                 return;
 632         if (ent == r_refdef.scene.worldentity)
 633                 R_DrawWorldSurfaces(false, true, false, false, false);
 634         else
 635                 R_DrawModelSurfaces(ent, false, true, false, false, false);
 636 }
 637
 638 void R_Q1BSP_DrawDepth(entity_render_t *ent)
 639 {
 640         dp_model_t *model = ent->model;
 641         if (model == NULL)
 642                 return;
 643         GL_ColorMask(0,0,0,0);
 644         GL_Color(1,1,1,1);
 645         GL_DepthTest(true);
 646         GL_BlendFunc(GL_ONE, GL_ZERO);
 647         GL_DepthMask(true);
 648 //      R_Mesh_ResetTextureState();
 649         R_SetupShader_DepthOrShadow(false);
 650         if (ent == r_refdef.scene.worldentity)
 651                 R_DrawWorldSurfaces(false, false, true, false, false);
 652         else
 653                 R_DrawModelSurfaces(ent, false, false, true, false, false);
 654         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
 655 }
 656
 657 void R_Q1BSP_DrawDebug(entity_render_t *ent)
 658 {
 659         if (ent->model == NULL)
 660                 return;
 661         if (ent == r_refdef.scene.worldentity)
 662                 R_DrawWorldSurfaces(false, false, false, true, false);
 663         else
 664                 R_DrawModelSurfaces(ent, false, false, false, true, false);
 665 }
 666
 667 void R_Q1BSP_DrawPrepass(entity_render_t *ent)
 668 {
 669         dp_model_t *model = ent->model;
 670         if (model == NULL)
 671                 return;
 672         if (ent == r_refdef.scene.worldentity)
 673                 R_DrawWorldSurfaces(false, true, false, false, true);
 674         else
 675                 R_DrawModelSurfaces(ent, false, true, false, false, true);
 676 }
 677
 678 typedef struct r_q1bsp_getlightinfo_s
 679 {
 680         dp_model_t *model;
 681         vec3_t relativelightorigin;
 682         float lightradius;
 683         int *outleaflist;
 684         unsigned char *outleafpvs;
 685         int outnumleafs;
 686         unsigned char *visitingleafpvs;
 687         int *outsurfacelist;
 688         unsigned char *outsurfacepvs;
 689         unsigned char *tempsurfacepvs;
 690         unsigned char *outshadowtrispvs;
 691         unsigned char *outlighttrispvs;
 692         int outnumsurfaces;
 693         vec3_t outmins;
 694         vec3_t outmaxs;
 695         vec3_t lightmins;
 696         vec3_t lightmaxs;
 697         const unsigned char *pvs;
 698         qboolean svbsp_active;
 699         qboolean svbsp_insertoccluder;
 700         int numfrustumplanes;
 701         const mplane_t *frustumplanes;
 702 }
 703 r_q1bsp_getlightinfo_t;
 704
 705 #define GETLIGHTINFO_MAXNODESTACK 4096
 706
 707 static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qboolean skipsurfaces)
 708 {
 709         // nodestack
 710         mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
 711         int nodestackpos = 0;
 712         // node processing
 713         mplane_t *plane;
 714         mnode_t *node;
 715         int sides;
 716         // leaf processing
 717         mleaf_t *leaf;
 718         const msurface_t *surface;
 719         const msurface_t *surfaces = info->model->data_surfaces;
 720         int numleafsurfaces;
 721         int leafsurfaceindex;
 722         int surfaceindex;
 723         int triangleindex, t;
 724         int currentmaterialflags;
 725         qboolean castshadow;
 726         const int *e;
 727         const vec_t *v[3];
 728         float v2[3][3];
 729         qboolean insidebox;
 730         qboolean frontsidecasting = r_shadow_frontsidecasting.integer != 0;
 731         qboolean svbspactive = info->svbsp_active;
 732         qboolean svbspinsertoccluder = info->svbsp_insertoccluder;
 733         const int *leafsurfaceindices;
 734         qboolean addedtris;
 735         int i;
 736         mportal_t *portal;
 737         static float points[128][3];
 738         // push the root node onto our nodestack
 739         nodestack[nodestackpos++] = info->model->brush.data_nodes;
 740         // we'll be done when the nodestack is empty
 741         while (nodestackpos)
 742         {
 743                 // get a node from the stack to process
 744                 node = nodestack[--nodestackpos];
 745                 // is it a node or a leaf?
 746                 plane = node->plane;
 747                 if (plane)
 748                 {
 749                         // node
 750 #if 0
 751                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 752                                 continue;
 753 #endif
 754 #if 0
 755                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
 756                                 continue;
 757 #endif
 758                         // axial planes can be processed much more quickly
 759                         if (plane->type < 3)
 760                         {
 761                                 // axial plane
 762                                 if (info->lightmins[plane->type] > plane->dist)
 763                                         nodestack[nodestackpos++] = node->children[0];
 764                                 else if (info->lightmaxs[plane->type] < plane->dist)
 765                                         nodestack[nodestackpos++] = node->children[1];
 766                                 else
 767                                 {
 768                                         // recurse front side first because the svbsp building prefers it
 769                                         if (info->relativelightorigin[plane->type] >= plane->dist)
 770                                         {
 771                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 772                                                         nodestack[nodestackpos++] = node->children[0];
 773                                                 nodestack[nodestackpos++] = node->children[1];
 774                                         }
 775                                         else
 776                                         {
 777                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 778                                                         nodestack[nodestackpos++] = node->children[1];
 779                                                 nodestack[nodestackpos++] = node->children[0];
 780                                         }
 781                                 }
 782                         }
 783                         else
 784                         {
 785                                 // sloped plane
 786                                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 787                                 switch (sides)
 788                                 {
 789                                 default:
 790                                         continue; // ERROR: NAN bounding box!
 791                                 case 1:
 792                                         nodestack[nodestackpos++] = node->children[0];
 793                                         break;
 794                                 case 2:
 795                                         nodestack[nodestackpos++] = node->children[1];
 796                                         break;
 797                                 case 3:
 798                                         // recurse front side first because the svbsp building prefers it
 799                                         if (PlaneDist(info->relativelightorigin, plane) >= 0)
 800                                         {
 801                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 802                                                         nodestack[nodestackpos++] = node->children[0];
 803                                                 nodestack[nodestackpos++] = node->children[1];
 804                                         }
 805                                         else
 806                                         {
 807                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 808                                                         nodestack[nodestackpos++] = node->children[1];
 809                                                 nodestack[nodestackpos++] = node->children[0];
 810                                         }
 811                                         break;
 812                                 }
 813                         }
 814                 }
 815                 else
 816                 {
 817                         // leaf
 818                         leaf = (mleaf_t *)node;
 819 #if 1
 820                         if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 821                                 continue;
 822 #endif
 823 #if 1
 824                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
 825                                 continue;
 826 #endif
 827 #if 1
 828                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
 829                                 continue;
 830 #endif
 831
 832                         if (svbspactive)
 833                         {
 834                                 // we can occlusion test the leaf by checking if all of its portals
 835                                 // are occluded (unless the light is in this leaf - but that was
 836                                 // already handled by the caller)
 837                                 for (portal = leaf->portals;portal;portal = portal->next)
 838                                 {
 839                                         for (i = 0;i < portal->numpoints;i++)
 840                                                 VectorCopy(portal->points[i].position, points[i]);
 841                                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 842                                                 break;
 843                                 }
 844                                 if (leaf->portals && portal == NULL)
 845                                         continue; // no portals of this leaf visible
 846                         }
 847
 848                         // add this leaf to the reduced light bounds
 849                         info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 850                         info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 851                         info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 852                         info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 853                         info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 854                         info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 855
 856                         // mark this leaf as being visible to the light
 857                         if (info->outleafpvs)
 858                         {
 859                                 int leafindex = leaf - info->model->brush.data_leafs;
 860                                 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 861                                 {
 862                                         SETPVSBIT(info->outleafpvs, leafindex);
 863                                         info->outleaflist[info->outnumleafs++] = leafindex;
 864                                 }
 865                         }
 866
 867                         // when using BIH, we skip the surfaces here
 868                         if (skipsurfaces)
 869                                 continue;
 870
 871                         // iterate the surfaces linked by this leaf and check their triangles
 872                         leafsurfaceindices = leaf->firstleafsurface;
 873                         numleafsurfaces = leaf->numleafsurfaces;
 874                         if (svbspinsertoccluder)
 875                         {
 876                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 877                                 {
 878                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 879                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 880                                                 continue;
 881                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 882                                         surface = surfaces + surfaceindex;
 883                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 884                                                 continue;
 885                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 886                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 887                                         if (!castshadow)
 888                                                 continue;
 889                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 890                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 891                                         {
 892                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 893                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 894                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 895                                                 VectorCopy(v[0], v2[0]);
 896                                                 VectorCopy(v[1], v2[1]);
 897                                                 VectorCopy(v[2], v2[2]);
 898                                                 if (insidebox || TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 899                                                         SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
 900                                         }
 901                                 }
 902                         }
 903                         else
 904                         {
 905                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 906                                 {
 907                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 908                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 909                                                 continue;
 910                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 911                                         surface = surfaces + surfaceindex;
 912                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 913                                                 continue;
 914                                         addedtris = false;
 915                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 916                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 917                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 918                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 919                                         {
 920                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 921                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 922                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 923                                                 VectorCopy(v[0], v2[0]);
 924                                                 VectorCopy(v[1], v2[1]);
 925                                                 VectorCopy(v[2], v2[2]);
 926                                                 if (!insidebox && !TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 927                                                         continue;
 928                                                 if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 929                                                         continue;
 930                                                 // we don't omit triangles from lighting even if they are
 931                                                 // backfacing, because when using shadowmapping they are often
 932                                                 // not fully occluded on the horizon of an edge
 933                                                 SETPVSBIT(info->outlighttrispvs, t);
 934                                                 addedtris = true;
 935                                                 if (castshadow)
 936                                                 {
 937                                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
 938                                                         {
 939                                                                 // if the material is double sided we
 940                                                                 // can't cull by direction
 941                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 942                                                         }
 943                                                         else if (frontsidecasting)
 944                                                         {
 945                                                                 // front side casting occludes backfaces,
 946                                                                 // so they are completely useless as both
 947                                                                 // casters and lit polygons
 948                                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 949                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 950                                                         }
 951                                                         else
 952                                                         {
 953                                                                 // back side casting does not occlude
 954                                                                 // anything so we can't cull lit polygons
 955                                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 956                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 957                                                         }
 958                                                 }
 959                                         }
 960                                         if (addedtris)
 961                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 962                                 }
 963                         }
 964                 }
 965         }
 966 }
 967
 968 static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
 969 {
 970         bih_leaf_t *leaf;
 971         bih_node_t *node;
 972         int nodenum;
 973         int axis;
 974         int surfaceindex;
 975         int t;
 976         int nodeleafindex;
 977         int currentmaterialflags;
 978         qboolean castshadow;
 979         msurface_t *surface;
 980         const int *e;
 981         const vec_t *v[3];
 982         float v2[3][3];
 983         int nodestack[GETLIGHTINFO_MAXNODESTACK];
 984         int nodestackpos = 0;
 985         // note: because the BSP leafs are not in the BIH tree, the _BSP function
 986         // must be called to mark leafs visible for entity culling...
 987         // we start at the root node
 988         nodestack[nodestackpos++] = bih->rootnode;
 989         // we'll be done when the stack is empty
 990         while (nodestackpos)
 991         {
 992                 // pop one off the stack to process
 993                 nodenum = nodestack[--nodestackpos];
 994                 // node
 995                 node = bih->nodes + nodenum;
 996                 if (node->type == BIH_UNORDERED)
 997                 {
 998                         for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
 999                         {
1000                                 leaf = bih->leafs + node->children[nodeleafindex];
1001                                 if (leaf->type != BIH_RENDERTRIANGLE)
1002                                         continue;
1003 #if 1
1004                                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
1005                                         continue;
1006 #endif
1007 #if 1
1008                                 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
1009                                         continue;
1010 #endif
1011                                 surfaceindex = leaf->surfaceindex;
1012                                 surface = info->model->data_surfaces + surfaceindex;
1013                                 currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
1014                                 castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
1015                                 t = leaf->itemindex + surface->num_firstshadowmeshtriangle - surface->num_firsttriangle;
1016                                 e = info->model->brush.shadowmesh->element3i + t * 3;
1017                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
1018                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
1019                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
1020                                 VectorCopy(v[0], v2[0]);
1021                                 VectorCopy(v[1], v2[1]);
1022                                 VectorCopy(v[2], v2[2]);
1023                                 if (info->svbsp_insertoccluder)
1024                                 {
1025                                         if (castshadow)
1026                                                 SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
1027                                         continue;
1028                                 }
1029                                 if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
1030                                         continue;
1031                                 // we don't occlude triangles from lighting even
1032                                 // if they are backfacing, because when using
1033                                 // shadowmapping they are often not fully occluded
1034                                 // on the horizon of an edge
1035                                 SETPVSBIT(info->outlighttrispvs, t);
1036                                 if (castshadow)
1037                                 {
1038                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
1039                                         {
1040                                                 // if the material is double sided we
1041                                                 // can't cull by direction
1042                                                 SETPVSBIT(info->outshadowtrispvs, t);
1043                                         }
1044                                         else if (r_shadow_frontsidecasting.integer)
1045                                         {
1046                                                 // front side casting occludes backfaces,
1047                                                 // so they are completely useless as both
1048                                                 // casters and lit polygons
1049                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1050                                                         SETPVSBIT(info->outshadowtrispvs, t);
1051                                         }
1052                                         else
1053                                         {
1054                                                 // back side casting does not occlude
1055                                                 // anything so we can't cull lit polygons
1056                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1057                                                         SETPVSBIT(info->outshadowtrispvs, t);
1058                                         }
1059                                 }
1060                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
1061                                 {
1062                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
1063                                         info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
1064                                 }
1065                         }
1066                 }
1067                 else
1068                 {
1069                         axis = node->type - BIH_SPLITX;
1070 #if 0
1071                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
1072                                 continue;
1073 #endif
1074 #if 0
1075                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
1076                                 continue;
1077 #endif
1078                         if (info->lightmins[axis] <= node->backmax)
1079                         {
1080                                 if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK)
1081                                         nodestack[nodestackpos++] = node->front;
1082                                 nodestack[nodestackpos++] = node->back;
1083                                 continue;
1084                         }
1085                         else if (info->lightmaxs[axis] >= node->frontmin)
1086                         {
1087                                 nodestack[nodestackpos++] = node->front;
1088                                 continue;
1089                         }
1090                         else
1091                                 continue; // light falls between children, nothing here
1092                 }
1093         }
1094 }
1095
1096 static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
1097 {
1098         extern cvar_t r_shadow_usebihculling;
1099         if (use_svbsp)
1100         {
1101                 float origin[3];
1102                 VectorCopy(info->relativelightorigin, origin);
1103                 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
1104                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1105                 info->svbsp_active = true;
1106                 info->svbsp_insertoccluder = true;
1107                 for (;;)
1108                 {
1109                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
1110                         R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1111                         // if that failed, retry with more nodes
1112                         if (r_svbsp.ranoutofnodes)
1113                         {
1114                                 // an upper limit is imposed
1115                                 if (r_svbsp.maxnodes >= 2<<22)
1116                                         break;
1117                                 r_svbsp.maxnodes *= 2;
1118                                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1119                                 //Mem_Free(r_svbsp.nodes);
1120                                 //r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
1121                         }
1122                         else
1123                                 break;
1124                 }
1125                 // now clear the visibility arrays because we need to redo it
1126                 info->outnumleafs = 0;
1127                 info->outnumsurfaces = 0;
1128                 memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
1129                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
1130                 if (info->model->brush.shadowmesh)
1131                         memset(info->outshadowtrispvs, 0, (info->model->brush.shadowmesh->numtriangles + 7) >> 3);
1132                 else
1133                         memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1134                 memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1135         }
1136         else
1137                 info->svbsp_active = false;
1138
1139         // we HAVE to mark the leaf the light is in as lit, because portals are
1140         // irrelevant to a leaf that the light source is inside of
1141         // (and they are all facing away, too)
1142         {
1143                 mnode_t *node = info->model->brush.data_nodes;
1144                 mleaf_t *leaf;
1145                 while (node->plane)
1146                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
1147                 leaf = (mleaf_t *)node;
1148                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
1149                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
1150                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
1151                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
1152                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
1153                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
1154                 if (info->outleafpvs)
1155                 {
1156                         int leafindex = leaf - info->model->brush.data_leafs;
1157                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
1158                         {
1159                                 SETPVSBIT(info->outleafpvs, leafindex);
1160                                 info->outleaflist[info->outnumleafs++] = leafindex;
1161                         }
1162                 }
1163         }
1164
1165         info->svbsp_insertoccluder = false;
1166         // use BIH culling on single leaf maps (generally this only happens if running a model as a map), otherwise use BSP culling to make use of vis data
1167         if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
1168         {
1169                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
1170                 R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
1171         }
1172         else
1173                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1174         // we're using temporary framedata memory, so this pointer will be invalid soon, clear it
1175         r_svbsp.nodes = NULL;
1176         if (developer_extra.integer && use_svbsp)
1177         {
1178                 Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
1179                 Con_DPrintf("occluders: %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_occluders_accepted, r_svbsp.stat_occluders_rejected, r_svbsp.stat_occluders_fragments_accepted, r_svbsp.stat_occluders_fragments_rejected);
1180                 Con_DPrintf("queries  : %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_queries_accepted, r_svbsp.stat_queries_rejected, r_svbsp.stat_queries_fragments_accepted, r_svbsp.stat_queries_fragments_rejected);
1181         }
1182 }
1183
1184 static msurface_t *r_q1bsp_getlightinfo_surfaces;
1185
1186 int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
1187 {
1188         int a = *(int*)ap;
1189         int b = *(int*)bp;
1190         const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
1191         const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
1192         if (as->texture < bs->texture)
1193                 return -1;
1194         if (as->texture > bs->texture)
1195                 return 1;
1196         return a - b;
1197 }
1198
1199 extern cvar_t r_shadow_sortsurfaces;
1200
1201 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs, unsigned char *visitingleafpvs, int numfrustumplanes, const mplane_t *frustumplanes)
1202 {
1203         r_q1bsp_getlightinfo_t info;
1204         VectorCopy(relativelightorigin, info.relativelightorigin);
1205         info.lightradius = lightradius;
1206         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
1207         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
1208         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
1209         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
1210         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
1211         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
1212         if (ent->model == NULL)
1213         {
1214                 VectorCopy(info.lightmins, outmins);
1215                 VectorCopy(info.lightmaxs, outmaxs);
1216                 *outnumleafspointer = 0;
1217                 *outnumsurfacespointer = 0;
1218                 return;
1219         }
1220         info.model = ent->model;
1221         info.outleaflist = outleaflist;
1222         info.outleafpvs = outleafpvs;
1223         info.outnumleafs = 0;
1224         info.visitingleafpvs = visitingleafpvs;
1225         info.outsurfacelist = outsurfacelist;
1226         info.outsurfacepvs = outsurfacepvs;
1227         info.outshadowtrispvs = outshadowtrispvs;
1228         info.outlighttrispvs = outlighttrispvs;
1229         info.outnumsurfaces = 0;
1230         info.numfrustumplanes = numfrustumplanes;
1231         info.frustumplanes = frustumplanes;
1232         VectorCopy(info.relativelightorigin, info.outmins);
1233         VectorCopy(info.relativelightorigin, info.outmaxs);
1234         memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1235         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1236         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
1237         if (info.model->brush.shadowmesh)
1238                 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
1239         else
1240                 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1241         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1242         if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
1243                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
1244         else
1245                 info.pvs = NULL;
1246         RSurf_ActiveWorldEntity();
1247
1248         if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
1249         {
1250                 // use portal recursion for exact light volume culling, and exact surface checking
1251                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, true, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
1252         }
1253         else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
1254         {
1255                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
1256                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, r_shadow_realtime_dlight_portalculling.integer >= 2, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
1257         }
1258         else
1259         {
1260                 // recurse the bsp tree, checking leafs and surfaces for visibility
1261                 // optionally using svbsp for exact culling of compiled lights
1262                 // (or if the user enables dlight svbsp culling, which is mostly for
1263                 //  debugging not actual use)
1264                 R_Q1BSP_CallRecursiveGetLightInfo(&info, (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
1265         }
1266
1267         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
1268
1269         // limit combined leaf box to light boundaries
1270         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
1271         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
1272         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
1273         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
1274         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
1275         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
1276
1277         *outnumleafspointer = info.outnumleafs;
1278         *outnumsurfacespointer = info.outnumsurfaces;
1279
1280         // now sort surfaces by texture for faster rendering
1281         r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
1282         if (r_shadow_sortsurfaces.integer)
1283                 qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
1284 }
1285
1286 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1287 {
1288         dp_model_t *model = ent->model;
1289         msurface_t *surface;
1290         int surfacelistindex;
1291         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1292         // if triangle neighbors are disabled, shadowvolumes are disabled
1293         if (!model->brush.shadowmesh->neighbor3i)
1294                 return;
1295         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1296         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1297         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1298         {
1299                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1300                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
1301                         continue;
1302                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
1303         }
1304         R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1305         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, false, false, true);
1306 }
1307
1308 extern cvar_t r_polygonoffset_submodel_factor;
1309 extern cvar_t r_polygonoffset_submodel_offset;
1310 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, const vec3_t relativelightorigin, const vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
1311 {
1312         dp_model_t *model = ent->model;
1313         const msurface_t *surface;
1314         int modelsurfacelistindex;
1315         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1316         // check the box in modelspace, it was already checked in worldspace
1317         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1318                 return;
1319         R_FrameData_SetMark();
1320         if (ent->model->brush.submodel)
1321                 GL_PolygonOffset(r_refdef.shadowpolygonfactor + r_polygonoffset_submodel_factor.value, r_refdef.shadowpolygonoffset + r_polygonoffset_submodel_offset.value);
1322         if (model->brush.shadowmesh)
1323         {
1324                 // if triangle neighbors are disabled, shadowvolumes are disabled
1325                 if (!model->brush.shadowmesh->neighbor3i)
1326                         return;
1327                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1328                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1329                 {
1330                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1331                         if (R_GetCurrentTexture(surface->texture)->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1332                                 continue;
1333                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
1334                 }
1335                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1336         }
1337         else
1338         {
1339                 // if triangle neighbors are disabled, shadowvolumes are disabled
1340                 if (!model->surfmesh.data_neighbor3i)
1341                         return;
1342                 projectdistance = lightradius + model->radius*2;
1343                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
1344                 // identify lit faces within the bounding box
1345                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1346                 {
1347                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1348                         rsurface.texture = R_GetCurrentTexture(surface->texture);
1349                         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1350                                 continue;
1351                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface.modelvertex3f, rsurface.modelelement3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
1352                 }
1353                 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface.modelvertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1354         }
1355         if (ent->model->brush.submodel)
1356                 GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);
1357         R_FrameData_ReturnToMark();
1358 }
1359
1360 void R_Q1BSP_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1361 {
1362         dp_model_t *model = ent->model;
1363         msurface_t *surface;
1364         int surfacelistindex;
1365         int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
1366         int i;
1367         if (!model->brush.shadowmesh)
1368                 return;
1369         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1370         R_Shadow_PrepareShadowSides(model->brush.shadowmesh->numtriangles);
1371         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1372         {
1373                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1374                 sidemasks |= R_Shadow_ChooseSidesFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, &r_shadow_compilingrtlight->matrix_worldtolight, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs, surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW ? NULL : sidetotals);
1375         }
1376         R_Shadow_ShadowMapFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
1377         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, false, false, true);
1378         r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
1379         for(i = 0;i<6;i++)
1380                 if(!sidetotals[i])
1381                         r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
1382 }
1383
1384 #define RSURF_MAX_BATCHSURFACES 8192
1385
1386 static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1387
1388 void R_Q1BSP_DrawShadowMap(int side, entity_render_t *ent, const vec3_t relativelightorigin, const vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const unsigned char *surfacesides, const vec3_t lightmins, const vec3_t lightmaxs)
1389 {
1390         dp_model_t *model = ent->model;
1391         const msurface_t *surface;
1392         int modelsurfacelistindex, batchnumsurfaces;
1393         // check the box in modelspace, it was already checked in worldspace
1394         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1395                 return;
1396         R_FrameData_SetMark();
1397         // identify lit faces within the bounding box
1398         for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1399         {
1400                 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1401                 if (surfacesides && !(surfacesides[modelsurfacelistindex] && (1 << side)))
1402                         continue;
1403                 rsurface.texture = R_GetCurrentTexture(surface->texture);
1404                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1405                         continue;
1406                 if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1407                         continue;
1408                 r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1409                 r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1410                 batchsurfacelist[0] = surface;
1411                 batchnumsurfaces = 1;
1412                 while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
1413                 {
1414                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1415                         if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1416                                 continue;
1417                         if (surface->texture != batchsurfacelist[0]->texture)
1418                                 break;
1419                         if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1420                                 continue;
1421                         r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1422                         r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1423                         batchsurfacelist[batchnumsurfaces++] = surface;
1424                 }
1425                 --modelsurfacelistindex;
1426                 GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
1427                 RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX, batchnumsurfaces, batchsurfacelist);
1428                 if (rsurface.batchvertex3fbuffer)
1429                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3fbuffer);
1430                 else
1431                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer);
1432                 RSurf_DrawBatch();
1433         }
1434         R_FrameData_ReturnToMark();
1435 }
1436
1437 #define BATCHSIZE 1024
1438
1439 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1440 {
1441         int i, j, endsurface;
1442         texture_t *t;
1443         const msurface_t *surface;
1444         R_FrameData_SetMark();
1445         // note: in practice this never actually receives batches
1446         R_Shadow_RenderMode_Begin();
1447         R_Shadow_RenderMode_ActiveLight(rtlight);
1448         R_Shadow_RenderMode_Lighting(false, true, false);
1449         R_Shadow_SetupEntityLight(ent);
1450         for (i = 0;i < numsurfaces;i = j)
1451         {
1452                 j = i + 1;
1453                 surface = rsurface.modelsurfaces + surfacelist[i];
1454                 t = surface->texture;
1455                 rsurface.texture = R_GetCurrentTexture(t);
1456                 endsurface = min(j + BATCHSIZE, numsurfaces);
1457                 for (j = i;j < endsurface;j++)
1458                 {
1459                         surface = rsurface.modelsurfaces + surfacelist[j];
1460                         if (t != surface->texture)
1461                                 break;
1462                         R_Shadow_RenderLighting(1, &surface);
1463                 }
1464         }
1465         R_Shadow_RenderMode_End();
1466         R_FrameData_ReturnToMark();
1467 }
1468
1469 extern qboolean r_shadow_usingdeferredprepass;
1470 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
1471 {
1472         dp_model_t *model = ent->model;
1473         const msurface_t *surface;
1474         int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
1475         const msurface_t **texturesurfacelist;
1476         texture_t *tex;
1477         CHECKGLERROR
1478         R_FrameData_SetMark();
1479         // this is a double loop because non-visible surface skipping has to be
1480         // fast, and even if this is not the world model (and hence no visibility
1481         // checking) the input surface list and batch buffer are different formats
1482         // so some processing is necessary.  (luckily models have few surfaces)
1483         for (i = 0;i < numsurfaces;)
1484         {
1485                 batchnumsurfaces = 0;
1486                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1487                 if (ent == r_refdef.scene.worldentity)
1488                 {
1489                         for (;i < endsurface;i++)
1490                                 if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
1491                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1492                 }
1493                 else
1494                 {
1495                         for (;i < endsurface;i++)
1496                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1497                 }
1498                 if (!batchnumsurfaces)
1499                         continue;
1500                 for (k = 0;k < batchnumsurfaces;k = kend)
1501                 {
1502                         surface = batchsurfacelist[k];
1503                         tex = surface->texture;
1504                         rsurface.texture = R_GetCurrentTexture(tex);
1505                         // gather surfaces into a batch range
1506                         for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
1507                                 ;
1508                         // now figure out what to do with this particular range of surfaces
1509                         // VorteX: added MATERIALFLAG_NORTLIGHT
1510                         if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
1511                                 continue;
1512                         if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
1513                                 continue;
1514                         if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1515                         {
1516                                 vec3_t tempcenter, center;
1517                                 for (l = k;l < kend;l++)
1518                                 {
1519                                         surface = batchsurfacelist[l];
1520                                         tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1521                                         tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1522                                         tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1523                                         Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1524                                         R_MeshQueue_AddTransparent(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_refdef.view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1525                                 }
1526                                 continue;
1527                         }
1528                         if (r_shadow_usingdeferredprepass)
1529                                 continue;
1530                         texturenumsurfaces = kend - k;
1531                         texturesurfacelist = batchsurfacelist + k;
1532                         R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
1533                 }
1534         }
1535         R_FrameData_ReturnToMark();
1536 }
1537
1538 //Made by [515]
1539 void R_ReplaceWorldTexture (void)
1540 {
1541         dp_model_t              *m;
1542         texture_t       *t;
1543         int                     i;
1544         const char      *r, *newt;
1545         skinframe_t *skinframe;
1546         if (!r_refdef.scene.worldmodel)
1547         {
1548                 Con_Printf("There is no worldmodel\n");
1549                 return;
1550         }
1551         m = r_refdef.scene.worldmodel;
1552
1553         if(Cmd_Argc() < 2)
1554         {
1555                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1556                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1557                 return;
1558         }
1559         if(!cl.islocalgame || !cl.worldmodel)
1560         {
1561                 Con_Print("This command works only in singleplayer\n");
1562                 return;
1563         }
1564         r = Cmd_Argv(1);
1565         newt = Cmd_Argv(2);
1566         if(!newt[0])
1567                 newt = r;
1568         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1569         {
1570                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1571                 {
1572                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true)))
1573                         {
1574 //                              t->skinframes[0] = skinframe;
1575                                 t->currentskinframe = skinframe;
1576                                 t->currentskinframe = skinframe;
1577                                 Con_Printf("%s replaced with %s\n", r, newt);
1578                         }
1579                         else
1580                         {
1581                                 Con_Printf("%s was not found\n", newt);
1582                                 return;
1583                         }
1584                 }
1585         }
1586 }
1587
1588 //Made by [515]
1589 void R_ListWorldTextures (void)
1590 {
1591         dp_model_t              *m;
1592         texture_t       *t;
1593         int                     i;
1594         if (!r_refdef.scene.worldmodel)
1595         {
1596                 Con_Printf("There is no worldmodel\n");
1597                 return;
1598         }
1599         m = r_refdef.scene.worldmodel;
1600
1601         Con_Print("Worldmodel textures :\n");
1602         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1603                 if (t->numskinframes)
1604                         Con_Printf("%s\n", t->name);
1605 }
1606
1607 #if 0
1608 static void gl_surf_start(void)
1609 {
1610 }
1611
1612 static void gl_surf_shutdown(void)
1613 {
1614 }
1615
1616 static void gl_surf_newmap(void)
1617 {
1618 }
1619 #endif
1620
1621 void GL_Surf_Init(void)
1622 {
1623
1624         Cvar_RegisterVariable(&r_ambient);
1625         Cvar_RegisterVariable(&r_lockpvs);
1626         Cvar_RegisterVariable(&r_lockvisibility);
1627         Cvar_RegisterVariable(&r_useportalculling);
1628         Cvar_RegisterVariable(&r_usesurfaceculling);
1629         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1630
1631         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1632         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1633
1634         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1635 }
1636