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