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
  25 #define MAX_LIGHTMAP_SIZE 256
  26
  27 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  28 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  29
  30 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  31
  32 cvar_t r_ambient = {0, "r_ambient", "0"};
  33 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  34 cvar_t r_testvis = {0, "r_testvis", "0"};
  35 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
  36 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  37 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "1"};
  38 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  39 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  40 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
  41 cvar_t gl_lightmaps = {0, "gl_lightmaps", "0"};
  42
  43 /*
  44 // FIXME: these arrays are huge!
  45 int r_q1bsp_maxmarkleafs;
  46 int r_q1bsp_nummarkleafs;
  47 mleaf_t *r_q1bsp_maxleaflist[65536];
  48 int r_q1bsp_maxmarksurfaces;
  49 int r_q1bsp_nummarksurfaces;
  50 msurface_t *r_q1bsp_maxsurfacelist[65536];
  51
  52 // FIXME: these arrays are huge!
  53 int r_q3bsp_maxmarkleafs;
  54 int r_q3bsp_nummarkleafs;
  55 q3mleaf_t *r_q3bsp_maxleaflist[65536];
  56 int r_q3bsp_maxmarksurfaces;
  57 int r_q3bsp_nummarksurfaces;
  58 q3msurface_t *r_q3bsp_maxsurfacelist[65536];
  59 */
  60
  61 static int dlightdivtable[32768];
  62
  63 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  64 {
  65         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
  66         unsigned int *bl;
  67         float dist, impact[3], local[3];
  68         dlight_t *light;
  69
  70         lit = false;
  71
  72         smax = (surf->extents[0] >> 4) + 1;
  73         tmax = (surf->extents[1] >> 4) + 1;
  74         smax3 = smax * 3;
  75
  76         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
  77         {
  78                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  79                         continue;                                       // not lit by this light
  80
  81                 Matrix4x4_Transform(matrix, light->origin, local);
  82                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  83
  84                 // for comparisons to minimum acceptable light
  85                 // compensate for LIGHTOFFSET
  86                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
  87
  88                 dist2 = dist * dist;
  89                 dist2 += LIGHTOFFSET;
  90                 if (dist2 >= maxdist)
  91                         continue;
  92
  93                 if (surf->plane->type < 3)
  94                 {
  95                         VectorCopy(local, impact);
  96                         impact[surf->plane->type] -= dist;
  97                 }
  98                 else
  99                 {
 100                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 101                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 102                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 103                 }
 104
 105                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 106                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 107
 108                 s = bound(0, impacts, smax * 16) - impacts;
 109                 t = bound(0, impactt, tmax * 16) - impactt;
 110                 i = s * s + t * t + dist2;
 111                 if (i > maxdist)
 112                         continue;
 113
 114                 // reduce calculations
 115                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 116                         sdtable[s] = i * i + dist2;
 117
 118                 maxdist3 = maxdist - dist2;
 119
 120                 // convert to 8.8 blocklights format
 121                 red = light->rtlight.lightmap_light[0] * (1.0f / 128.0f);
 122                 green = light->rtlight.lightmap_light[1] * (1.0f / 128.0f);
 123                 blue = light->rtlight.lightmap_light[2] * (1.0f / 128.0f);
 124                 subtract = (int) (light->rtlight.lightmap_subtract * 4194304.0f);
 125                 bl = intblocklights;
 126
 127                 i = impactt;
 128                 for (t = 0;t < tmax;t++, i -= 16)
 129                 {
 130                         td = i * i;
 131                         // make sure some part of it is visible on this line
 132                         if (td < maxdist3)
 133                         {
 134                                 maxdist2 = maxdist - td;
 135                                 for (s = 0;s < smax;s++)
 136                                 {
 137                                         if (sdtable[s] < maxdist2)
 138                                         {
 139                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 140                                                 if (k > 0)
 141                                                 {
 142                                                         bl[0] += (red   * k);
 143                                                         bl[1] += (green * k);
 144                                                         bl[2] += (blue  * k);
 145                                                         lit = true;
 146                                                 }
 147                                         }
 148                                         bl += 3;
 149                                 }
 150                         }
 151                         else // skip line
 152                                 bl += smax3;
 153                 }
 154         }
 155         return lit;
 156 }
 157
 158 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 159 {
 160         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 161         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 162         dlight_t *light;
 163
 164         lit = false;
 165
 166         smax = (surf->extents[0] >> 4) + 1;
 167         tmax = (surf->extents[1] >> 4) + 1;
 168         smax3 = smax * 3;
 169
 170         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
 171         {
 172                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 173                         continue;                                       // not lit by this light
 174
 175                 Matrix4x4_Transform(matrix, light->origin, local);
 176                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 177
 178                 // for comparisons to minimum acceptable light
 179                 // compensate for LIGHTOFFSET
 180                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
 181
 182                 dist2 = dist * dist;
 183                 dist2 += LIGHTOFFSET;
 184                 if (dist2 >= maxdist)
 185                         continue;
 186
 187                 if (surf->plane->type < 3)
 188                 {
 189                         VectorCopy(local, impact);
 190                         impact[surf->plane->type] -= dist;
 191                 }
 192                 else
 193                 {
 194                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 195                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 196                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 197                 }
 198
 199                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 200                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 201
 202                 td = bound(0, impacts, smax * 16) - impacts;
 203                 td1 = bound(0, impactt, tmax * 16) - impactt;
 204                 td = td * td + td1 * td1 + dist2;
 205                 if (td > maxdist)
 206                         continue;
 207
 208                 // reduce calculations
 209                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 210                         sdtable[s] = td1 * td1 + dist2;
 211
 212                 maxdist3 = maxdist - dist2;
 213
 214                 // convert to 8.8 blocklights format
 215                 red = light->rtlight.lightmap_light[0];
 216                 green = light->rtlight.lightmap_light[1];
 217                 blue = light->rtlight.lightmap_light[2];
 218                 subtract = light->rtlight.lightmap_subtract * 32768.0f;
 219                 bl = floatblocklights;
 220
 221                 td1 = impactt;
 222                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 223                 {
 224                         td = td1 * td1;
 225                         // make sure some part of it is visible on this line
 226                         if (td < maxdist3)
 227                         {
 228                                 maxdist2 = maxdist - td;
 229                                 for (s = 0;s < smax;s++)
 230                                 {
 231                                         if (sdtable[s] < maxdist2)
 232                                         {
 233                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 234                                                 bl[0] += red   * k;
 235                                                 bl[1] += green * k;
 236                                                 bl[2] += blue  * k;
 237                                                 lit = true;
 238                                         }
 239                                         bl += 3;
 240                                 }
 241                         }
 242                         else // skip line
 243                                 bl += smax3;
 244                 }
 245         }
 246         return lit;
 247 }
 248
 249 /*
 250 ===============
 251 R_BuildLightMap
 252
 253 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 254 ===============
 255 */
 256 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf)
 257 {
 258         if (!r_floatbuildlightmap.integer)
 259         {
 260                 int smax, tmax, i, j, size, size3, maps, stride, l;
 261                 unsigned int *bl, scale;
 262                 qbyte *lightmap, *out, *stain;
 263
 264                 // update cached lighting info
 265                 surf->cached_dlight = 0;
 266
 267                 smax = (surf->extents[0]>>4)+1;
 268                 tmax = (surf->extents[1]>>4)+1;
 269                 size = smax*tmax;
 270                 size3 = size*3;
 271                 lightmap = surf->samples;
 272
 273         // set to full bright if no light data
 274                 bl = intblocklights;
 275                 if (!ent->model->brushq1.lightdata)
 276                 {
 277                         for (i = 0;i < size3;i++)
 278                                 bl[i] = 255*256;
 279                 }
 280                 else
 281                 {
 282         // clear to no light
 283                         memset(bl, 0, size*3*sizeof(unsigned int));
 284
 285                         if (surf->dlightframe == r_framecount)
 286                         {
 287                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 288                                 if (surf->cached_dlight)
 289                                         c_light_polys++;
 290                         }
 291
 292         // add all the lightmaps
 293                         if (lightmap)
 294                         {
 295                                 bl = intblocklights;
 296                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 297                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 298                                                 bl[i] += lightmap[i] * scale;
 299                         }
 300                 }
 301
 302                 stain = surf->stainsamples;
 303                 bl = intblocklights;
 304                 out = templight;
 305                 // the >> 16 shift adjusts down 8 bits to account for the stainmap
 306                 // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 307                 // be doubled during rendering to achieve 2x overbright
 308                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 309                 if (ent->model->brushq1.lightmaprgba)
 310                 {
 311                         stride = (surf->lightmaptexturestride - smax) * 4;
 312                         for (i = 0;i < tmax;i++, out += stride)
 313                         {
 314                                 for (j = 0;j < smax;j++)
 315                                 {
 316                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 317                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 318                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 319                                         *out++ = 255;
 320                                 }
 321                         }
 322                 }
 323                 else
 324                 {
 325                         stride = (surf->lightmaptexturestride - smax) * 3;
 326                         for (i = 0;i < tmax;i++, out += stride)
 327                         {
 328                                 for (j = 0;j < smax;j++)
 329                                 {
 330                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 331                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 332                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 333                                 }
 334                         }
 335                 }
 336
 337                 R_UpdateTexture(surf->lightmaptexture, templight);
 338         }
 339         else
 340         {
 341                 int smax, tmax, i, j, size, size3, maps, stride, l;
 342                 float *bl, scale;
 343                 qbyte *lightmap, *out, *stain;
 344
 345                 // update cached lighting info
 346                 surf->cached_dlight = 0;
 347
 348                 smax = (surf->extents[0]>>4)+1;
 349                 tmax = (surf->extents[1]>>4)+1;
 350                 size = smax*tmax;
 351                 size3 = size*3;
 352                 lightmap = surf->samples;
 353
 354         // set to full bright if no light data
 355                 bl = floatblocklights;
 356                 if (!ent->model->brushq1.lightdata)
 357                 {
 358                         for (i = 0;i < size3;i++)
 359                                 bl[i] = 255*256;
 360                 }
 361                 else
 362                 {
 363                         memset(bl, 0, size*3*sizeof(float));
 364
 365                         if (surf->dlightframe == r_framecount)
 366                         {
 367                                 surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 368                                 if (surf->cached_dlight)
 369                                         c_light_polys++;
 370                         }
 371
 372                         // add all the lightmaps
 373                         if (lightmap)
 374                         {
 375                                 bl = floatblocklights;
 376                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 377                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 378                                                 bl[i] += lightmap[i] * scale;
 379                         }
 380                 }
 381
 382                 stain = surf->stainsamples;
 383                 bl = floatblocklights;
 384                 out = templight;
 385                 // this scaling adjusts down 8 bits to account for the stainmap
 386                 // scaling, and remaps the 0.0-2.0 (2x overbright) to 0-256, it will
 387                 // be doubled during rendering to achieve 2x overbright
 388                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 389                 scale = 1.0f / (1 << 16);
 390                 if (ent->model->brushq1.lightmaprgba)
 391                 {
 392                         stride = (surf->lightmaptexturestride - smax) * 4;
 393                         for (i = 0;i < tmax;i++, out += stride)
 394                         {
 395                                 for (j = 0;j < smax;j++)
 396                                 {
 397                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 398                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 399                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 400                                         *out++ = 255;
 401                                 }
 402                         }
 403                 }
 404                 else
 405                 {
 406                         stride = (surf->lightmaptexturestride - smax) * 3;
 407                         for (i = 0;i < tmax;i++, out += stride)
 408                         {
 409                                 for (j = 0;j < smax;j++)
 410                                 {
 411                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 412                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 413                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 414                                 }
 415                         }
 416                 }
 417
 418                 R_UpdateTexture(surf->lightmaptexture, templight);
 419         }
 420 }
 421
 422 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 423 {
 424         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 425         msurface_t *surf, *endsurf;
 426         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 427         qbyte *bl;
 428         vec3_t impact;
 429
 430         maxdist = radius * radius;
 431         invradius = 1.0f / radius;
 432
 433 loc0:
 434         if (node->contents < 0)
 435                 return;
 436         ndist = PlaneDiff(origin, node->plane);
 437         if (ndist > radius)
 438         {
 439                 node = node->children[0];
 440                 goto loc0;
 441         }
 442         if (ndist < -radius)
 443         {
 444                 node = node->children[1];
 445                 goto loc0;
 446         }
 447
 448         dist2 = ndist * ndist;
 449         maxdist3 = maxdist - dist2;
 450
 451         if (node->plane->type < 3)
 452         {
 453                 VectorCopy(origin, impact);
 454                 impact[node->plane->type] -= ndist;
 455         }
 456         else
 457         {
 458                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 459                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 460                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 461         }
 462
 463         for (surf = model->brushq1.surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 464         {
 465                 if (surf->stainsamples)
 466                 {
 467                         smax = (surf->extents[0] >> 4) + 1;
 468                         tmax = (surf->extents[1] >> 4) + 1;
 469
 470                         impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 471                         impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 472
 473                         s = bound(0, impacts, smax * 16) - impacts;
 474                         t = bound(0, impactt, tmax * 16) - impactt;
 475                         i = s * s + t * t + dist2;
 476                         if (i > maxdist)
 477                                 continue;
 478
 479                         // reduce calculations
 480                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 481                                 sdtable[s] = i * i + dist2;
 482
 483                         bl = surf->stainsamples;
 484                         smax3 = smax * 3;
 485                         stained = false;
 486
 487                         i = impactt;
 488                         for (t = 0;t < tmax;t++, i -= 16)
 489                         {
 490                                 td = i * i;
 491                                 // make sure some part of it is visible on this line
 492                                 if (td < maxdist3)
 493                                 {
 494                                         maxdist2 = maxdist - td;
 495                                         for (s = 0;s < smax;s++)
 496                                         {
 497                                                 if (sdtable[s] < maxdist2)
 498                                                 {
 499                                                         ratio = lhrandom(0.0f, 1.0f);
 500                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 501                                                         if (a >= (1.0f / 64.0f))
 502                                                         {
 503                                                                 if (a > 1)
 504                                                                         a = 1;
 505                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 506                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 507                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 508                                                                 stained = true;
 509                                                         }
 510                                                 }
 511                                                 bl += 3;
 512                                         }
 513                                 }
 514                                 else // skip line
 515                                         bl += smax3;
 516                         }
 517                         // force lightmap upload
 518                         if (stained)
 519                                 surf->cached_dlight = true;
 520                 }
 521         }
 522
 523         if (node->children[0]->contents >= 0)
 524         {
 525                 if (node->children[1]->contents >= 0)
 526                 {
 527                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 528                         node = node->children[1];
 529                         goto loc0;
 530                 }
 531                 else
 532                 {
 533                         node = node->children[0];
 534                         goto loc0;
 535                 }
 536         }
 537         else if (node->children[1]->contents >= 0)
 538         {
 539                 node = node->children[1];
 540                 goto loc0;
 541         }
 542 }
 543
 544 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)
 545 {
 546         int n;
 547         float fcolor[8];
 548         entity_render_t *ent;
 549         model_t *model;
 550         vec3_t org;
 551         if (cl.worldmodel == NULL || !cl.worldmodel->brushq1.nodes)
 552                 return;
 553         fcolor[0] = cr1;
 554         fcolor[1] = cg1;
 555         fcolor[2] = cb1;
 556         fcolor[3] = ca1 * (1.0f / 64.0f);
 557         fcolor[4] = cr2 - cr1;
 558         fcolor[5] = cg2 - cg1;
 559         fcolor[6] = cb2 - cb1;
 560         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 561
 562         R_StainNode(cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, cl.worldmodel, origin, radius, fcolor);
 563
 564         // look for embedded bmodels
 565         for (n = 0;n < cl_num_brushmodel_entities;n++)
 566         {
 567                 ent = cl_brushmodel_entities[n];
 568                 model = ent->model;
 569                 if (model && model->name[0] == '*')
 570                 {
 571                         Mod_CheckLoaded(model);
 572                         if (model->brushq1.nodes)
 573                         {
 574                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 575                                 R_StainNode(model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 576                         }
 577                 }
 578         }
 579 }
 580
 581
 582 /*
 583 =============================================================
 584
 585         BRUSH MODELS
 586
 587 =============================================================
 588 */
 589
 590 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 591 {
 592         int i;
 593         float scale;
 594         const qbyte *lm;
 595         if (styles[0] != 255)
 596         {
 597                 for (i = 0;i < numverts;i++, c += 4)
 598                 {
 599                         lm = samples + lightmapoffsets[i];
 600                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 601                         VectorMA(c, scale, lm, c);
 602                         if (styles[1] != 255)
 603                         {
 604                                 lm += size3;
 605                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 606                                 VectorMA(c, scale, lm, c);
 607                                 if (styles[2] != 255)
 608                                 {
 609                                         lm += size3;
 610                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 611                                         VectorMA(c, scale, lm, c);
 612                                         if (styles[3] != 255)
 613                                         {
 614                                                 lm += size3;
 615                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 616                                                 VectorMA(c, scale, lm, c);
 617                                         }
 618                                 }
 619                         }
 620                 }
 621         }
 622 }
 623
 624 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 625 {
 626         int i;
 627         float diff[3], f;
 628         if (fogenabled)
 629         {
 630                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 631                 {
 632                         VectorSubtract(v, modelorg, diff);
 633                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 634                         VectorScale(c, f, c);
 635                 }
 636         }
 637         else if (colorscale != 1)
 638                 for (i = 0;i < numverts;i++, c += 4)
 639                         VectorScale(c, colorscale, c);
 640 }
 641
 642 static void RSurf_FoggedColors_Vertex3f_Color4f(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 643 {
 644         int i;
 645         float diff[3], f;
 646         r *= colorscale;
 647         g *= colorscale;
 648         b *= colorscale;
 649         if (fogenabled)
 650         {
 651                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 652                 {
 653                         VectorSubtract(v, modelorg, diff);
 654                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 655                         c[0] = r * f;
 656                         c[1] = g * f;
 657                         c[2] = b * f;
 658                         c[3] = a;
 659                 }
 660         }
 661         else
 662         {
 663                 for (i = 0;i < numverts;i++, c += 4)
 664                 {
 665                         c[0] = r;
 666                         c[1] = g;
 667                         c[2] = b;
 668                         c[3] = a;
 669                 }
 670         }
 671 }
 672
 673 static void RSurf_FogPassColors_Vertex3f_Color4f(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 674 {
 675         int i;
 676         float diff[3], f;
 677         r *= colorscale;
 678         g *= colorscale;
 679         b *= colorscale;
 680         for (i = 0;i < numverts;i++, v += 3, c += 4)
 681         {
 682                 VectorSubtract(v, modelorg, diff);
 683                 f = exp(fogdensity/DotProduct(diff, diff));
 684                 c[0] = r;
 685                 c[1] = g;
 686                 c[2] = b;
 687                 c[3] = a * f;
 688         }
 689 }
 690
 691 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
 692 {
 693         float f;
 694         const float *v;
 695         float *c;
 696         int i, l, lit = false;
 697         const dlight_t *light;
 698         vec3_t lightorigin;
 699         for (l = 0;l < r_numdlights;l++)
 700         {
 701                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 702                 {
 703                         light = &r_dlight[l];
 704                         Matrix4x4_Transform(matrix, light->origin, lightorigin);
 705                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
 706                         {
 707                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 708                                 if (f < light->rtlight.lightmap_cullradius2)
 709                                 {
 710                                         f = ((1.0f / f) - light->rtlight.lightmap_subtract) * scale;
 711                                         VectorMA(c, f, light->rtlight.lightmap_light, c);
 712                                         lit = true;
 713                                 }
 714                         }
 715                 }
 716         }
 717         return lit;
 718 }
 719
 720 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 721 {
 722         const msurface_t *surf;
 723         rmeshstate_t m;
 724
 725         // LordHavoc: HalfLife maps have freaky skypolys...
 726         if (ent->model->brush.ishlbsp)
 727                 return;
 728
 729         if (skyrendernow)
 730         {
 731                 skyrendernow = false;
 732                 if (skyrendermasked)
 733                         R_Sky();
 734         }
 735
 736         R_Mesh_Matrix(&ent->matrix);
 737
 738         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 739         if (skyrendermasked)
 740         {
 741                 // depth-only (masking)
 742                 GL_ColorMask(0,0,0,0);
 743                 // just to make sure that braindead drivers don't draw anything
 744                 // despite that colormask...
 745                 GL_BlendFunc(GL_ZERO, GL_ONE);
 746         }
 747         else
 748         {
 749                 // fog sky
 750                 GL_BlendFunc(GL_ONE, GL_ZERO);
 751         }
 752         GL_DepthMask(true);
 753         GL_DepthTest(true);
 754
 755         memset(&m, 0, sizeof(m));
 756         while((surf = *surfchain++) != NULL)
 757         {
 758                 if (surf->visframe == r_framecount)
 759                 {
 760                         m.pointer_vertex = surf->mesh.data_vertex3f;
 761                         R_Mesh_State(&m);
 762                         GL_LockArrays(0, surf->mesh.num_vertices);
 763                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 764                         GL_LockArrays(0, 0);
 765                 }
 766         }
 767         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 768 }
 769
 770 static void RSurfShader_Transparent_Callback(const void *calldata1, int calldata2)
 771 {
 772         const entity_render_t *ent = calldata1;
 773         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 774         rmeshstate_t m;
 775         float currentalpha;
 776         float base, colorscale;
 777         vec3_t modelorg;
 778         texture_t *texture;
 779         float args[4] = {0.05f,0,0,0.04f};
 780         int rendertype, turb, fullbright;
 781
 782         R_Mesh_Matrix(&ent->matrix);
 783         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 784
 785         texture = surf->texinfo->texture;
 786         if (texture->animated)
 787                 texture = texture->anim_frames[ent->frame != 0][(texture->anim_total[ent->frame != 0] >= 2) ? ((int) (cl.time * 5.0f) % texture->anim_total[ent->frame != 0]) : 0];
 788         currentalpha = ent->alpha;
 789         if (surf->flags & SURF_WATERALPHA)
 790                 currentalpha *= r_wateralpha.value;
 791
 792         GL_DepthTest(true);
 793         if (ent->effects & EF_ADDITIVE)
 794         {
 795                 rendertype = SURFRENDER_ADD;
 796                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 797                 GL_DepthMask(false);
 798         }
 799         else if (currentalpha < 1 || texture->skin.fog != NULL)
 800         {
 801                 rendertype = SURFRENDER_ALPHA;
 802                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 803                 GL_DepthMask(false);
 804         }
 805         else
 806         {
 807                 rendertype = SURFRENDER_OPAQUE;
 808                 GL_BlendFunc(GL_ONE, GL_ZERO);
 809                 GL_DepthMask(true);
 810         }
 811
 812         turb = (surf->flags & SURF_DRAWTURB) && r_waterscroll.value;
 813         fullbright = !(ent->flags & RENDER_LIGHT) || (surf->flags & SURF_DRAWFULLBRIGHT) || !surf->samples;
 814         base = fullbright ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 815         if (surf->flags & SURF_DRAWTURB)
 816                 base *= 0.5f;
 817         if ((surf->flags & SURF_DRAWTURB) && gl_textureshader && r_watershader.value && !fogenabled)
 818         {
 819                 // NVIDIA Geforce3 distortion texture shader on water
 820                 GL_Color(1, 1, 1, currentalpha);
 821                 memset(&m, 0, sizeof(m));
 822                 m.pointer_vertex = surf->mesh.data_vertex3f;
 823                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(cl.time * 16)&63]);
 824                 m.tex[1] = R_GetTexture(texture->skin.base);
 825                 m.texcombinergb[0] = GL_REPLACE;
 826                 m.texcombinergb[1] = GL_REPLACE;
 827                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 828                 m.pointer_texcoord[1] = surf->mesh.data_texcoordtexture2f;
 829                 Matrix4x4_CreateFromQuakeEntity(&m.texmatrix[0], 0, 0, 0, 0, 0, 0, r_watershader.value);
 830                 Matrix4x4_CreateTranslate(&m.texmatrix[1], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 831                 R_Mesh_State(&m);
 832
 833                 GL_ActiveTexture(0);
 834                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 835                 GL_ActiveTexture(1);
 836                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 837                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 838                 qglTexEnvfv(GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 839                 qglEnable(GL_TEXTURE_SHADER_NV);
 840
 841                 GL_LockArrays(0, surf->mesh.num_vertices);
 842                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 843                 GL_LockArrays(0, 0);
 844
 845                 qglDisable(GL_TEXTURE_SHADER_NV);
 846                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 847                 GL_ActiveTexture(0);
 848         }
 849         else
 850         {
 851                 memset(&m, 0, sizeof(m));
 852                 m.pointer_vertex = surf->mesh.data_vertex3f;
 853                 m.pointer_color = varray_color4f;
 854                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 855                 m.tex[0] = R_GetTexture(texture->skin.base);
 856                 if (turb)
 857                 {
 858                         // scrolling in texture matrix
 859                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 860                 }
 861                 colorscale = 1;
 862                 if (gl_combine.integer)
 863                 {
 864                         m.texrgbscale[0] = 4;
 865                         colorscale *= 0.25f;
 866                 }
 867                 R_FillColors(varray_color4f, surf->mesh.num_vertices, base, base, base, currentalpha);
 868                 if (!fullbright)
 869                 {
 870                         if (surf->dlightframe == r_framecount)
 871                                 RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, surf->mesh.num_vertices, surf->mesh.data_vertex3f, varray_color4f, 1);
 872                         if (surf->samples)
 873                                 RSurf_AddLightmapToVertexColors_Color4f(surf->mesh.data_lightmapoffsets, varray_color4f,surf->mesh.num_vertices, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 874                 }
 875                 RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 876                 R_Mesh_State(&m);
 877                 GL_LockArrays(0, surf->mesh.num_vertices);
 878                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 879                 GL_LockArrays(0, 0);
 880                 if (texture->skin.glow)
 881                 {
 882                         memset(&m, 0, sizeof(m));
 883                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 884                         GL_DepthMask(false);
 885                         m.pointer_color = varray_color4f;
 886                         m.tex[0] = R_GetTexture(texture->skin.glow);
 887                         m.pointer_vertex = surf->mesh.data_vertex3f;
 888                         if (m.tex[0])
 889                         {
 890                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 891                                 if (turb)
 892                                 {
 893                                         // scrolling in texture matrix
 894                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 895                                 }
 896                         }
 897                         R_Mesh_State(&m);
 898                         RSurf_FoggedColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surf->mesh.num_vertices, modelorg);
 899                         GL_LockArrays(0, surf->mesh.num_vertices);
 900                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 901                         GL_LockArrays(0, 0);
 902                 }
 903                 if (fogenabled && rendertype != SURFRENDER_ADD)
 904                 {
 905                         memset(&m, 0, sizeof(m));
 906                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 907                         GL_DepthMask(false);
 908                         m.pointer_color = varray_color4f;
 909                         m.tex[0] = R_GetTexture(texture->skin.fog);
 910                         m.pointer_vertex = surf->mesh.data_vertex3f;
 911                         if (m.tex[0])
 912                         {
 913                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 914                                 if (turb)
 915                                 {
 916                                         // scrolling in texture matrix
 917                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 918                                 }
 919                         }
 920                         R_Mesh_State(&m);
 921                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surf->mesh.num_vertices, modelorg);
 922                         GL_LockArrays(0, surf->mesh.num_vertices);
 923                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 924                         GL_LockArrays(0, 0);
 925                 }
 926         }
 927 }
 928
 929 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 930 {
 931         const msurface_t *surf;
 932         rmeshstate_t m;
 933         int lightmaptexturenum;
 934         memset(&m, 0, sizeof(m));
 935         GL_BlendFunc(GL_ONE, GL_ZERO);
 936         GL_DepthMask(true);
 937         GL_DepthTest(true);
 938         m.tex[0] = R_GetTexture(texture->skin.base);
 939         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 940         m.texrgbscale[1] = 2;
 941         m.tex[2] = R_GetTexture(texture->skin.detail);
 942         m.texrgbscale[2] = 2;
 943         if (texture->skin.glow)
 944         {
 945                 m.tex[3] = R_GetTexture(texture->skin.glow);
 946                 m.texcombinergb[3] = GL_ADD;
 947         }
 948         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
 949
 950         while((surf = *surfchain++) != NULL)
 951         {
 952                 if (surf->visframe == r_framecount)
 953                 {
 954                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
 955                         m.tex[1] = lightmaptexturenum;
 956                         m.pointer_vertex = surf->mesh.data_vertex3f;
 957                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 958                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
 959                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
 960                         m.pointer_texcoord[3] = surf->mesh.data_texcoordtexture2f;
 961                         R_Mesh_State(&m);
 962                         GL_LockArrays(0, surf->mesh.num_vertices);
 963                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 964                         GL_LockArrays(0, 0);
 965                 }
 966         }
 967 }
 968
 969 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 970 {
 971         const msurface_t *surf;
 972         rmeshstate_t m;
 973         int lightmaptexturenum;
 974         memset(&m, 0, sizeof(m));
 975         GL_BlendFunc(GL_ONE, GL_ZERO);
 976         GL_DepthMask(true);
 977         GL_DepthTest(true);
 978         m.tex[0] = R_GetTexture(texture->skin.base);
 979         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 980         m.texrgbscale[1] = 2;
 981         m.tex[2] = R_GetTexture(texture->skin.detail);
 982         m.texrgbscale[2] = 2;
 983         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
 984
 985         while((surf = *surfchain++) != NULL)
 986         {
 987                 if (surf->visframe == r_framecount)
 988                 {
 989                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
 990                         m.tex[1] = lightmaptexturenum;
 991                         m.pointer_vertex = surf->mesh.data_vertex3f;
 992                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 993                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
 994                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
 995                         R_Mesh_State(&m);
 996                         GL_LockArrays(0, surf->mesh.num_vertices);
 997                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 998                         GL_LockArrays(0, 0);
 999                 }
1000         }
1001 }
1002
1003 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1004 {
1005         const msurface_t *surf;
1006         rmeshstate_t m;
1007         int lightmaptexturenum;
1008         memset(&m, 0, sizeof(m));
1009         GL_BlendFunc(GL_ONE, GL_ZERO);
1010         GL_DepthMask(true);
1011         GL_DepthTest(true);
1012         m.tex[0] = R_GetTexture(texture->skin.base);
1013         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1014         m.texrgbscale[1] = 2;
1015         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1016         while((surf = *surfchain++) != NULL)
1017         {
1018                 if (surf->visframe == r_framecount)
1019                 {
1020                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1021                         m.tex[1] = lightmaptexturenum;
1022                         m.pointer_vertex = surf->mesh.data_vertex3f;
1023                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1024                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1025                         R_Mesh_State(&m);
1026                         GL_LockArrays(0, surf->mesh.num_vertices);
1027                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1028                         GL_LockArrays(0, 0);
1029                 }
1030         }
1031 }
1032
1033 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1034 {
1035         const msurface_t *surf;
1036         rmeshstate_t m;
1037         memset(&m, 0, sizeof(m));
1038         GL_DepthMask(true);
1039         GL_DepthTest(true);
1040         GL_BlendFunc(GL_ONE, GL_ZERO);
1041         m.tex[0] = R_GetTexture(texture->skin.base);
1042         if (ent->flags & RENDER_LIGHT)
1043                 GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1044         else
1045                 GL_Color(1, 1, 1, 1);
1046         while((surf = *surfchain++) != NULL)
1047         {
1048                 if (surf->visframe == r_framecount)
1049                 {
1050                         m.pointer_vertex = surf->mesh.data_vertex3f;
1051                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1052                         R_Mesh_State(&m);
1053                         GL_LockArrays(0, surf->mesh.num_vertices);
1054                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1055                         GL_LockArrays(0, 0);
1056                 }
1057         }
1058 }
1059
1060 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1061 {
1062         const msurface_t *surf;
1063         rmeshstate_t m;
1064         int lightmaptexturenum;
1065         memset(&m, 0, sizeof(m));
1066         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1067         GL_DepthMask(false);
1068         GL_DepthTest(true);
1069         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1070         GL_Color(1, 1, 1, 1);
1071         while((surf = *surfchain++) != NULL)
1072         {
1073                 if (surf->visframe == r_framecount)
1074                 {
1075                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1076                         m.tex[0] = lightmaptexturenum;
1077                         m.pointer_vertex = surf->mesh.data_vertex3f;
1078                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1079                         R_Mesh_State(&m);
1080                         GL_LockArrays(0, surf->mesh.num_vertices);
1081                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1082                         GL_LockArrays(0, 0);
1083                 }
1084         }
1085 }
1086
1087 static void RSurfShader_OpaqueWall_Pass_BaseAmbient(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1088 {
1089         const msurface_t *surf;
1090         rmeshstate_t m;
1091         memset(&m, 0, sizeof(m));
1092         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1093         GL_DepthMask(false);
1094         GL_DepthTest(true);
1095         m.tex[0] = R_GetTexture(texture->skin.base);
1096         GL_Color(r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), 1);
1097         while((surf = *surfchain++) != NULL)
1098         {
1099                 if (surf->visframe == r_framecount)
1100                 {
1101                         m.pointer_vertex = surf->mesh.data_vertex3f;
1102                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1103                         R_Mesh_State(&m);
1104                         GL_LockArrays(0, surf->mesh.num_vertices);
1105                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1106                         GL_LockArrays(0, 0);
1107                 }
1108         }
1109 }
1110
1111 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1112 {
1113         const msurface_t *surf;
1114         rmeshstate_t m;
1115         float modelorg[3];
1116         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1117         memset(&m, 0, sizeof(m));
1118         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1119         GL_DepthMask(false);
1120         GL_DepthTest(true);
1121         m.pointer_color = varray_color4f;
1122         while((surf = *surfchain++) != NULL)
1123         {
1124                 if (surf->visframe == r_framecount)
1125                 {
1126                         m.pointer_vertex = surf->mesh.data_vertex3f;
1127                         if (m.tex[0])
1128                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1129                         R_Mesh_State(&m);
1130                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surf->mesh.num_vertices, modelorg);
1131                         GL_LockArrays(0, surf->mesh.num_vertices);
1132                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1133                         GL_LockArrays(0, 0);
1134                 }
1135         }
1136 }
1137
1138 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1139 {
1140         const msurface_t *surf;
1141         rmeshstate_t m;
1142         memset(&m, 0, sizeof(m));
1143         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1144         GL_DepthMask(false);
1145         GL_DepthTest(true);
1146         m.tex[0] = R_GetTexture(texture->skin.detail);
1147         GL_Color(1, 1, 1, 1);
1148         while((surf = *surfchain++) != NULL)
1149         {
1150                 if (surf->visframe == r_framecount)
1151                 {
1152                         m.pointer_vertex = surf->mesh.data_vertex3f;
1153                         m.pointer_texcoord[0] = surf->mesh.data_texcoorddetail2f;
1154                         R_Mesh_State(&m);
1155                         GL_LockArrays(0, surf->mesh.num_vertices);
1156                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1157                         GL_LockArrays(0, 0);
1158                 }
1159         }
1160 }
1161
1162 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1163 {
1164         const msurface_t *surf;
1165         rmeshstate_t m;
1166         memset(&m, 0, sizeof(m));
1167         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1168         GL_DepthMask(false);
1169         GL_DepthTest(true);
1170         m.tex[0] = R_GetTexture(texture->skin.glow);
1171         GL_Color(1, 1, 1, 1);
1172         while((surf = *surfchain++) != NULL)
1173         {
1174                 if (surf->visframe == r_framecount)
1175                 {
1176                         m.pointer_vertex = surf->mesh.data_vertex3f;
1177                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1178                         R_Mesh_State(&m);
1179                         GL_LockArrays(0, surf->mesh.num_vertices);
1180                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1181                         GL_LockArrays(0, 0);
1182                 }
1183         }
1184 }
1185
1186 /*
1187 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1188 {
1189         const msurface_t *surf;
1190         rmeshstate_t m;
1191         memset(&m, 0, sizeof(m));
1192         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1193         GL_DepthMask(true);
1194         m.tex[0] = R_GetTexture(texture->skin.glow);
1195         if (m.tex[0])
1196                 GL_Color(1, 1, 1, 1);
1197         else
1198                 GL_Color(0, 0, 0, 1);
1199         while((surf = *surfchain++) != NULL)
1200         {
1201                 if (surf->visframe == r_framecount)
1202                 {
1203                         m.pointer_vertex = surf->mesh.data_vertex3f;
1204                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1205                         R_Mesh_State(&m);
1206                         GL_LockArrays(0, surf->mesh.num_vertices);
1207                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1208                         GL_LockArrays(0, 0);
1209                 }
1210         }
1211 }
1212 */
1213
1214 static void RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1215 {
1216         const msurface_t *surf;
1217         rmeshstate_t m;
1218         int lightmaptexturenum;
1219         memset(&m, 0, sizeof(m));
1220         GL_BlendFunc(GL_ONE, GL_ZERO);
1221         GL_DepthMask(true);
1222         GL_DepthTest(true);
1223         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1224         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1225         while((surf = *surfchain++) != NULL)
1226         {
1227                 if (surf->visframe == r_framecount)
1228                 {
1229                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1230                         m.tex[0] = lightmaptexturenum;
1231                         m.pointer_vertex = surf->mesh.data_vertex3f;
1232                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1233                         R_Mesh_State(&m);
1234                         GL_LockArrays(0, surf->mesh.num_vertices);
1235                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1236                         GL_LockArrays(0, 0);
1237                 }
1238         }
1239 }
1240
1241 void R_UpdateTextureInfo(entity_render_t *ent)
1242 {
1243         int i, texframe, alttextures;
1244         texture_t *t;
1245
1246         if (!ent->model)
1247                 return;
1248
1249         alttextures = ent->frame != 0;
1250         texframe = (int)(cl.time * 5.0f);
1251         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1252         {
1253                 t = ent->model->brushq1.textures + i;
1254                 t->currentalpha = ent->alpha;
1255                 if (t->flags & SURF_WATERALPHA)
1256                         t->currentalpha *= r_wateralpha.value;
1257                 if (ent->effects & EF_ADDITIVE)
1258                         t->rendertype = SURFRENDER_ADD;
1259                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1260                         t->rendertype = SURFRENDER_ALPHA;
1261                 else
1262                         t->rendertype = SURFRENDER_OPAQUE;
1263                 // we don't need to set currentframe if t->animated is false because
1264                 // it was already set up by the texture loader for non-animating
1265                 if (t->animated)
1266                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1267         }
1268 }
1269
1270 void R_UpdateLightmapInfo(entity_render_t *ent)
1271 {
1272         int i;
1273         msurface_t *surface, **surfacechain;
1274         model_t *model = ent->model;
1275         if (!model)
1276                 return;
1277         if (r_dynamic.integer && !r_rtdlight)
1278                 R_MarkLights(ent);
1279         for (i = 0;i < model->brushq1.light_styles;i++)
1280         {
1281                 if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1282                 {
1283                         model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1284                         for (surfacechain = model->brushq1.light_styleupdatechains[i];(surface = *surfacechain);surfacechain++)
1285                                 surface->cached_dlight = true;
1286                 }
1287         }
1288 }
1289
1290 void R_PrepareSurfaces(entity_render_t *ent)
1291 {
1292         int i, numsurfaces, *surfacevisframes;
1293         model_t *model;
1294         msurface_t *surf, *surfaces;
1295         vec3_t modelorg;
1296
1297         if (!ent->model)
1298                 return;
1299
1300         model = ent->model;
1301         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1302         numsurfaces = model->nummodelsurfaces;
1303         surfaces = model->brushq1.surfaces + model->firstmodelsurface;
1304         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1305         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1306         {
1307                 if (surfacevisframes[i] == r_framecount)
1308                 {
1309 #if !WORLDNODECULLBACKFACES
1310                         // mark any backface surfaces as not visible
1311                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1312                         {
1313                                 if (!(surf->flags & SURF_PLANEBACK))
1314                                         surfacevisframes[i] = -1;
1315                         }
1316                         else
1317                         {
1318                                 if ((surf->flags & SURF_PLANEBACK))
1319                                         surfacevisframes[i] = -1;
1320                         }
1321                         if (surfacevisframes[i] == r_framecount)
1322 #endif
1323                         {
1324                                 c_faces++;
1325                                 surf->visframe = r_framecount;
1326                                 if (surf->cached_dlight && surf->lightmaptexture != NULL)
1327                                         R_BuildLightMap(ent, surf);
1328                         }
1329                 }
1330         }
1331 }
1332
1333 void R_DrawSurfaces(entity_render_t *ent, int flagsmask)
1334 {
1335         int texturenumber, f;
1336         vec3_t center;
1337         msurface_t *surf, **chain, **surfchain;
1338         texture_t *t, *texture;
1339         model_t *model = ent->model;
1340         if (model == NULL)
1341                 return;
1342         R_Mesh_Matrix(&ent->matrix);
1343         for (texturenumber = 0, t = model->brushq1.textures;texturenumber < model->brushq1.numtextures;texturenumber++, t++)
1344         {
1345                 if ((f = t->flags & flagsmask) && (texture = t->currentframe) && (surfchain = model->brushq1.pvstexturechains[texturenumber]) != NULL)
1346                 {
1347                         if (texture->flags & SURF_LIGHTMAP)
1348                         {
1349                                 if (gl_lightmaps.integer)
1350                                 {
1351                                         RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(ent, texture, surfchain);
1352                                         if (fogenabled)
1353                                                 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1354                                 }
1355                                 else if (texture->rendertype != SURFRENDER_OPAQUE)
1356                                 {
1357                                         // transparent vertex shaded from lightmap
1358                                         for (chain = surfchain;(surf = *chain) != NULL;chain++)
1359                                         {
1360                                                 if (surf->visframe == r_framecount)
1361                                                 {
1362                                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1363                                                         R_MeshQueue_AddTransparent(center, RSurfShader_Transparent_Callback, ent, surf - ent->model->brushq1.surfaces);
1364                                                 }
1365                                         }
1366                                 }
1367                                 else
1368                                 {
1369                                         if (!(ent->flags & RENDER_LIGHT))
1370                                         {
1371                                                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1372                                                 if (r_detailtextures.integer)
1373                                                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1374                                                 if (texture->skin.glow)
1375                                                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1376                                         }
1377                                         else if (r_textureunits.integer >= 4 && gl_combine.integer && r_detailtextures.integer && r_ambient.value <= 0)
1378                                                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(ent, texture, surfchain);
1379                                         else
1380                                         {
1381                                                 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer && r_ambient.value <= 0)
1382                                                         RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(ent, texture, surfchain);
1383                                                 else
1384                                                 {
1385                                                         if (r_textureunits.integer >= 2 && gl_combine.integer)
1386                                                                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(ent, texture, surfchain);
1387                                                         else
1388                                                         {
1389                                                                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1390                                                                 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1391                                                         }
1392                                                         if (r_ambient.value > 0)
1393                                                                 RSurfShader_OpaqueWall_Pass_BaseAmbient(ent, texture, surfchain);
1394                                                         if (r_detailtextures.integer)
1395                                                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1396                                                 }
1397                                                 if (texture->skin.glow)
1398                                                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1399                                         }
1400                                         if (fogenabled)
1401                                                 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1402                                 }
1403                         }
1404                         else if (texture->flags & SURF_DRAWTURB)
1405                         {
1406                                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1407                                 {
1408                                         if (surf->visframe == r_framecount)
1409                                         {
1410                                                 if (texture->rendertype == SURFRENDER_OPAQUE)
1411                                                         RSurfShader_Transparent_Callback(ent, surf - ent->model->brushq1.surfaces);
1412                                                 else
1413                                                 {
1414                                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1415                                                         R_MeshQueue_AddTransparent(center, RSurfShader_Transparent_Callback, ent, surf - ent->model->brushq1.surfaces);
1416                                                 }
1417                                         }
1418                                 }
1419                         }
1420                         else if (texture->flags & SURF_DRAWSKY)
1421                                 RSurfShader_Sky(ent, texture, surfchain);
1422                 }
1423         }
1424 }
1425
1426 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1427 {
1428         int i;
1429         float *v;
1430         rmeshstate_t m;
1431         const entity_render_t *ent = calldata1;
1432         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1433         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1434         GL_DepthMask(false);
1435         GL_DepthTest(true);
1436         R_Mesh_Matrix(&ent->matrix);
1437
1438         memset(&m, 0, sizeof(m));
1439         m.pointer_vertex = varray_vertex3f;
1440         R_Mesh_State(&m);
1441
1442         i = portal - ent->model->brushq1.portals;
1443         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1444                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1445                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1446                          0.125f);
1447         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
1448         {
1449                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1450                         VectorCopy(portal->points[i].position, v);
1451         }
1452         else
1453                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1454                         VectorCopy(portal->points[i].position, v);
1455         GL_LockArrays(0, portal->numpoints);
1456         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1457         GL_LockArrays(0, 0);
1458 }
1459
1460 // LordHavoc: this is just a nice debugging tool, very slow
1461 static void R_DrawPortals(entity_render_t *ent)
1462 {
1463         int i;
1464         mportal_t *portal, *endportal;
1465         float temp[3], center[3], f;
1466         if (ent->model == NULL)
1467                 return;
1468         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1469         {
1470                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1471                 {
1472                         VectorClear(temp);
1473                         for (i = 0;i < portal->numpoints;i++)
1474                                 VectorAdd(temp, portal->points[i].position, temp);
1475                         f = ixtable[portal->numpoints];
1476                         VectorScale(temp, f, temp);
1477                         Matrix4x4_Transform(&ent->matrix, temp, center);
1478                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1479                 }
1480         }
1481 }
1482
1483 void R_PrepareBrushModel(entity_render_t *ent)
1484 {
1485         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1486         msurface_t *surf;
1487         model_t *model;
1488 #if WORLDNODECULLBACKFACES
1489         vec3_t modelorg;
1490 #endif
1491
1492         // because bmodels can be reused, we have to decide which things to render
1493         // from scratch every time
1494         model = ent->model;
1495         if (model == NULL)
1496                 return;
1497 #if WORLDNODECULLBACKFACES
1498         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1499 #endif
1500         numsurfaces = model->nummodelsurfaces;
1501         surf = model->brushq1.surfaces + model->firstmodelsurface;
1502         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1503         surfacepvsframes = model->brushq1.surfacepvsframes + model->firstmodelsurface;
1504         for (i = 0;i < numsurfaces;i++, surf++)
1505         {
1506 #if WORLDNODECULLBACKFACES
1507                 // mark any backface surfaces as not visible
1508                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1509                 {
1510                         if ((surf->flags & SURF_PLANEBACK))
1511                                 surfacevisframes[i] = r_framecount;
1512                 }
1513                 else if (!(surf->flags & SURF_PLANEBACK))
1514                         surfacevisframes[i] = r_framecount;
1515 #else
1516                 surfacevisframes[i] = r_framecount;
1517 #endif
1518                 surf->dlightframe = -1;
1519         }
1520         R_UpdateTextureInfo(ent);
1521         R_UpdateLightmapInfo(ent);
1522 }
1523
1524 void R_SurfaceWorldNode (entity_render_t *ent)
1525 {
1526         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1527         msurface_t *surf;
1528         mleaf_t *leaf;
1529         model_t *model;
1530         vec3_t modelorg;
1531
1532         // equivilant to quake's RecursiveWorldNode but faster and more effective
1533         model = ent->model;
1534         if (model == NULL)
1535                 return;
1536         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1537         surfacepvsframes = model->brushq1.surfacepvsframes + model->firstmodelsurface;
1538         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1539
1540         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1541         {
1542                 if (!R_CullBox (leaf->mins, leaf->maxs))
1543                 {
1544                         c_leafs++;
1545                         leaf->visframe = r_framecount;
1546                 }
1547         }
1548
1549         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1550         {
1551                 surfnum = model->brushq1.pvssurflist[i];
1552                 surf = model->brushq1.surfaces + surfnum;
1553 #if WORLDNODECULLBACKFACES
1554                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1555                 {
1556                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1557                                 surfacevisframes[surfnum] = r_framecount;
1558                 }
1559                 else
1560                 {
1561                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1562                                 surfacevisframes[surfnum] = r_framecount;
1563                 }
1564 #else
1565                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1566                         surfacevisframes[surfnum] = r_framecount;
1567 #endif
1568         }
1569 }
1570
1571 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1572 {
1573         int c, leafstackpos, *mark, *surfacevisframes;
1574 #if WORLDNODECULLBACKFACES
1575         int n;
1576         msurface_t *surf;
1577 #endif
1578         mleaf_t *leaf, *leafstack[8192];
1579         mportal_t *p;
1580         vec3_t modelorg;
1581         msurface_t *surfaces;
1582         if (ent->model == NULL)
1583                 return;
1584         // LordHavoc: portal-passage worldnode with PVS;
1585         // follows portals leading outward from viewleaf, does not venture
1586         // offscreen or into leafs that are not visible, faster than Quake's
1587         // RecursiveWorldNode
1588         surfaces = ent->model->brushq1.surfaces;
1589         surfacevisframes = ent->model->brushq1.surfacevisframes;
1590         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1591         viewleaf->worldnodeframe = r_framecount;
1592         leafstack[0] = viewleaf;
1593         leafstackpos = 1;
1594         while (leafstackpos)
1595         {
1596                 c_leafs++;
1597                 leaf = leafstack[--leafstackpos];
1598                 leaf->visframe = r_framecount;
1599                 // draw any surfaces bounding this leaf
1600                 if (leaf->nummarksurfaces)
1601                 {
1602                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1603                         {
1604 #if WORLDNODECULLBACKFACES
1605                                 n = *mark++;
1606                                 if (surfacevisframes[n] != r_framecount)
1607                                 {
1608                                         surf = surfaces + n;
1609                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1610                                         {
1611                                                 if ((surf->flags & SURF_PLANEBACK))
1612                                                         surfacevisframes[n] = r_framecount;
1613                                         }
1614                                         else
1615                                         {
1616                                                 if (!(surf->flags & SURF_PLANEBACK))
1617                                                         surfacevisframes[n] = r_framecount;
1618                                         }
1619                                 }
1620 #else
1621                                 surfacevisframes[*mark++] = r_framecount;
1622 #endif
1623                         }
1624                 }
1625                 // follow portals into other leafs
1626                 for (p = leaf->portals;p;p = p->next)
1627                 {
1628                         // LordHavoc: this DotProduct hurts less than a cache miss
1629                         // (which is more likely to happen if backflowing through leafs)
1630                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1631                         {
1632                                 leaf = p->past;
1633                                 if (leaf->worldnodeframe != r_framecount)
1634                                 {
1635                                         leaf->worldnodeframe = r_framecount;
1636                                         // FIXME: R_CullBox is absolute, should be done relative
1637                                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
1638                                                 leafstack[leafstackpos++] = leaf;
1639                                 }
1640                         }
1641                 }
1642         }
1643 }
1644
1645 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1646 {
1647         int j, c, *surfacepvsframes, *mark;
1648         mleaf_t *leaf;
1649         model_t *model;
1650
1651         model = ent->model;
1652         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1653         {
1654                 model->brushq1.pvsframecount++;
1655                 model->brushq1.pvsviewleaf = viewleaf;
1656                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1657                 model->brushq1.pvsleafchain = NULL;
1658                 model->brushq1.pvssurflistlength = 0;
1659                 if (viewleaf)
1660                 {
1661                         surfacepvsframes = model->brushq1.surfacepvsframes;
1662                         for (j = 0, leaf = model->brushq1.data_leafs;j < model->brushq1.num_leafs;j++, leaf++)
1663                         {
1664                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
1665                                 {
1666                                         leaf->pvsframe = model->brushq1.pvsframecount;
1667                                         leaf->pvschain = model->brushq1.pvsleafchain;
1668                                         model->brushq1.pvsleafchain = leaf;
1669                                         // mark surfaces bounding this leaf as visible
1670                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1671                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1672                                 }
1673                         }
1674                         model->brushq1.BuildPVSTextureChains(model);
1675                 }
1676         }
1677 }
1678
1679 void R_WorldVisibility(entity_render_t *ent)
1680 {
1681         vec3_t modelorg;
1682         mleaf_t *viewleaf;
1683
1684         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1685         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1686         R_PVSUpdate(ent, viewleaf);
1687
1688         if (!viewleaf)
1689                 return;
1690
1691         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1692                 R_SurfaceWorldNode (ent);
1693         else
1694                 R_PortalWorldNode (ent, viewleaf);
1695
1696         if (r_drawportals.integer)
1697                 R_DrawPortals(ent);
1698 }
1699
1700 void R_Q1BSP_DrawSky(entity_render_t *ent)
1701 {
1702         if (ent->model == NULL)
1703                 return;
1704         if (ent != &cl_entities[0].render)
1705                 R_PrepareBrushModel(ent);
1706         R_PrepareSurfaces(ent);
1707         R_DrawSurfaces(ent, SURF_DRAWSKY);
1708 }
1709
1710 void R_Q1BSP_Draw(entity_render_t *ent)
1711 {
1712         if (ent->model == NULL)
1713                 return;
1714         c_bmodels++;
1715         if (ent != &cl_entities[0].render)
1716                 R_PrepareBrushModel(ent);
1717         R_PrepareSurfaces(ent);
1718         R_UpdateTextureInfo(ent);
1719         R_UpdateLightmapInfo(ent);
1720         R_DrawSurfaces(ent, SURF_DRAWTURB | SURF_LIGHTMAP);
1721 }
1722
1723 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
1724 {
1725         model_t *model = ent->model;
1726         vec3_t lightmins, lightmaxs;
1727         int t, leafindex, marksurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
1728         const int *e;
1729         const float *v[3];
1730         msurface_t *surface;
1731         mleaf_t *leaf;
1732         const qbyte *pvs;
1733         lightmins[0] = relativelightorigin[0] - lightradius;
1734         lightmins[1] = relativelightorigin[1] - lightradius;
1735         lightmins[2] = relativelightorigin[2] - lightradius;
1736         lightmaxs[0] = relativelightorigin[0] + lightradius;
1737         lightmaxs[1] = relativelightorigin[1] + lightradius;
1738         lightmaxs[2] = relativelightorigin[2] + lightradius;
1739         *outnumclusterspointer = 0;
1740         *outnumsurfacespointer = 0;
1741         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
1742         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
1743         if (model == NULL)
1744         {
1745                 VectorCopy(lightmins, outmins);
1746                 VectorCopy(lightmaxs, outmaxs);
1747                 return;
1748         }
1749         VectorCopy(relativelightorigin, outmins);
1750         VectorCopy(relativelightorigin, outmaxs);
1751         if (model->brush.GetPVS)
1752                 pvs = model->brush.GetPVS(model, relativelightorigin);
1753         else
1754                 pvs = NULL;
1755         // FIXME: use BSP recursion as lights are often small
1756         for (leafindex = 0, leaf = model->brushq1.data_leafs;leafindex < model->brushq1.num_leafs;leafindex++, leaf++)
1757         {
1758                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
1759                 {
1760                         outmins[0] = min(outmins[0], leaf->mins[0]);
1761                         outmins[1] = min(outmins[1], leaf->mins[1]);
1762                         outmins[2] = min(outmins[2], leaf->mins[2]);
1763                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
1764                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
1765                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
1766                         if (outclusterpvs)
1767                         {
1768                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
1769                                 {
1770                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
1771                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
1772                                 }
1773                         }
1774                         if (outsurfacepvs)
1775                         {
1776                                 for (marksurfaceindex = 0;marksurfaceindex < leaf->nummarksurfaces;marksurfaceindex++)
1777                                 {
1778                                         surfaceindex = leaf->firstmarksurface[marksurfaceindex];
1779                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
1780                                         {
1781                                                 surface = model->brushq1.surfaces + surfaceindex;
1782                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->poly_mins, surface->poly_maxs) && (surface->flags & SURF_LIGHTMAP) && !surface->texinfo->texture->skin.fog)
1783                                                 {
1784                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
1785                                                         {
1786                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1787                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1788                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1789                                                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1790                                                                 {
1791                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
1792                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
1793                                                                         break;
1794                                                                 }
1795                                                         }
1796                                                 }
1797                                         }
1798                                 }
1799                         }
1800                 }
1801         }
1802
1803         // limit combined leaf box to light boundaries
1804         outmins[0] = max(outmins[0], lightmins[0]);
1805         outmins[1] = max(outmins[1], lightmins[1]);
1806         outmins[2] = max(outmins[2], lightmins[2]);
1807         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
1808         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
1809         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
1810
1811         *outnumclusterspointer = outnumclusters;
1812         *outnumsurfacespointer = outnumsurfaces;
1813 }
1814
1815 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
1816 {
1817         model_t *model = ent->model;
1818         vec3_t lightmins, lightmaxs;
1819         msurface_t *surface;
1820         int surfacelistindex, j, t;
1821         const int *e;
1822         const float *v[3];
1823         if (r_drawcollisionbrushes.integer < 2)
1824         {
1825                 lightmins[0] = relativelightorigin[0] - lightradius;
1826                 lightmins[1] = relativelightorigin[1] - lightradius;
1827                 lightmins[2] = relativelightorigin[2] - lightradius;
1828                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1829                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1830                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1831                 R_Mesh_Matrix(&ent->matrix);
1832                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1833                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1834                 {
1835                         surface = model->brushq1.surfaces + surfacelist[surfacelistindex];
1836                         for (j = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < surface->mesh.num_triangles;j++, t++, e += 3)
1837                         {
1838                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1839                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1840                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1841                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1842                                         shadowmarklist[numshadowmark++] = t;
1843                         }
1844                 }
1845                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
1846         }
1847 }
1848
1849 void R_Q1BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, int numsurfaces, const int *surfacelist)
1850 {
1851         model_t *model = ent->model;
1852         vec3_t lightmins, lightmaxs, modelorg;
1853         msurface_t *surface;
1854         texture_t *t;
1855         int surfacelistindex;
1856         if (r_drawcollisionbrushes.integer < 2)
1857         {
1858                 lightmins[0] = relativelightorigin[0] - lightradius;
1859                 lightmins[1] = relativelightorigin[1] - lightradius;
1860                 lightmins[2] = relativelightorigin[2] - lightradius;
1861                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1862                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1863                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1864                 R_Mesh_Matrix(&ent->matrix);
1865                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1866                 R_UpdateTextureInfo(ent);
1867                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1868                 {
1869                         surface = model->brushq1.surfaces + surfacelist[surfacelistindex];
1870                         if (r_shadow_compilingrtlight)
1871                         {
1872                                 // if compiling an rtlight, capture the mesh
1873                                 t = surface->texinfo->texture;
1874                                 if (t->flags & SURF_LIGHTMAP && t->skin.fog == NULL)
1875                                         Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texinfo->texture->skin.base, surface->texinfo->texture->skin.gloss, surface->texinfo->texture->skin.nmap, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, surface->mesh.num_triangles, surface->mesh.data_element3i);
1876                         }
1877                         else if (ent != &cl_entities[0].render || surface->visframe == r_framecount)
1878                         {
1879                                 t = surface->texinfo->texture->currentframe;
1880                                 if (t->flags & SURF_LIGHTMAP)
1881                                         R_Shadow_RenderLighting(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, t->skin.gloss, lightcubemap, LIGHTING_DIFFUSE | LIGHTING_SPECULAR);
1882                         }
1883                 }
1884         }
1885 }
1886
1887 void R_DrawCollisionBrush(colbrushf_t *brush)
1888 {
1889         int i;
1890         rmeshstate_t m;
1891         memset(&m, 0, sizeof(m));
1892         m.pointer_vertex = brush->points->v;
1893         R_Mesh_State(&m);
1894         i = ((int)brush) / sizeof(colbrushf_t);
1895         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1896         GL_LockArrays(0, brush->numpoints);
1897         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1898         GL_LockArrays(0, 0);
1899 }
1900
1901 void R_Q3BSP_DrawCollisionFace(entity_render_t *ent, q3msurface_t *face)
1902 {
1903         int i;
1904         rmeshstate_t m;
1905         if (!face->num_collisiontriangles)
1906                 return;
1907         memset(&m, 0, sizeof(m));
1908         m.pointer_vertex = face->data_collisionvertex3f;
1909         R_Mesh_State(&m);
1910         i = ((int)face) / sizeof(q3msurface_t);
1911         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1912         GL_LockArrays(0, face->num_collisionvertices);
1913         R_Mesh_Draw(face->num_collisionvertices, face->num_collisiontriangles, face->data_collisionelement3i);
1914         GL_LockArrays(0, 0);
1915 }
1916
1917 void R_Q3BSP_DrawSkyFace(entity_render_t *ent, q3msurface_t *face)
1918 {
1919         rmeshstate_t m;
1920         if (!face->num_triangles)
1921                 return;
1922         c_faces++;
1923         if (skyrendernow)
1924         {
1925                 skyrendernow = false;
1926                 if (skyrendermasked)
1927                         R_Sky();
1928         }
1929         if (!r_q3bsp_renderskydepth.integer)
1930                 return;
1931
1932         R_Mesh_Matrix(&ent->matrix);
1933
1934         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1935         if (skyrendermasked)
1936         {
1937                 // depth-only (masking)
1938                 GL_ColorMask(0,0,0,0);
1939                 // just to make sure that braindead drivers don't draw anything
1940                 // despite that colormask...
1941                 GL_BlendFunc(GL_ZERO, GL_ONE);
1942         }
1943         else
1944         {
1945                 // fog sky
1946                 GL_BlendFunc(GL_ONE, GL_ZERO);
1947         }
1948         GL_DepthMask(true);
1949         GL_DepthTest(true);
1950
1951         memset(&m, 0, sizeof(m));
1952         m.pointer_vertex = face->data_vertex3f;
1953         R_Mesh_State(&m);
1954
1955         GL_LockArrays(0, face->num_vertices);
1956         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1957         GL_LockArrays(0, 0);
1958         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
1959 }
1960
1961 void R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(entity_render_t *ent, q3msurface_t *face)
1962 {
1963         rmeshstate_t m;
1964         memset(&m, 0, sizeof(m));
1965         GL_BlendFunc(GL_ONE, GL_ZERO);
1966         GL_DepthMask(true);
1967         GL_DepthTest(true);
1968         if (face->texture->skin.glow)
1969         {
1970                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
1971                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1972                 GL_Color(1, 1, 1, 1);
1973         }
1974         else
1975                 GL_Color(0, 0, 0, 1);
1976         m.pointer_vertex = face->data_vertex3f;
1977         R_Mesh_State(&m);
1978         GL_LockArrays(0, face->num_vertices);
1979         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1980         GL_LockArrays(0, 0);
1981 }
1982
1983 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(entity_render_t *ent, q3msurface_t *face)
1984 {
1985         rmeshstate_t m;
1986         memset(&m, 0, sizeof(m));
1987         GL_BlendFunc(GL_ONE, GL_ZERO);
1988         GL_DepthMask(true);
1989         GL_DepthTest(true);
1990         m.tex[0] = R_GetTexture(face->texture->skin.base);
1991         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1992         m.tex[1] = R_GetTexture(face->lightmaptexture);
1993         m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
1994         m.texrgbscale[1] = 2;
1995         GL_Color(1, 1, 1, 1);
1996         m.pointer_vertex = face->data_vertex3f;
1997         R_Mesh_State(&m);
1998         GL_LockArrays(0, face->num_vertices);
1999         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2000         GL_LockArrays(0, 0);
2001 }
2002
2003 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(entity_render_t *ent, q3msurface_t *face)
2004 {
2005         rmeshstate_t m;
2006         memset(&m, 0, sizeof(m));
2007         GL_BlendFunc(GL_ONE, GL_ZERO);
2008         GL_DepthMask(true);
2009         GL_DepthTest(true);
2010         m.tex[0] = R_GetTexture(face->texture->skin.base);
2011         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2012         GL_Color(1, 1, 1, 1);
2013         m.pointer_vertex = face->data_vertex3f;
2014         R_Mesh_State(&m);
2015         GL_LockArrays(0, face->num_vertices);
2016         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2017         GL_LockArrays(0, 0);
2018 }
2019
2020 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(entity_render_t *ent, q3msurface_t *face)
2021 {
2022         rmeshstate_t m;
2023         memset(&m, 0, sizeof(m));
2024         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
2025         GL_DepthMask(false);
2026         GL_DepthTest(true);
2027         m.tex[0] = R_GetTexture(face->lightmaptexture);
2028         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2029         GL_Color(1, 1, 1, 1);
2030         m.pointer_vertex = face->data_vertex3f;
2031         R_Mesh_State(&m);
2032         GL_LockArrays(0, face->num_vertices);
2033         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2034         GL_LockArrays(0, 0);
2035 }
2036
2037 void R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(entity_render_t *ent, q3msurface_t *face)
2038 {
2039         rmeshstate_t m;
2040         memset(&m, 0, sizeof(m));
2041         GL_BlendFunc(GL_ONE, GL_ZERO);
2042         GL_DepthMask(true);
2043         GL_DepthTest(true);
2044         m.tex[0] = R_GetTexture(face->lightmaptexture);
2045         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2046         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
2047         m.pointer_vertex = face->data_vertex3f;
2048         R_Mesh_State(&m);
2049         GL_LockArrays(0, face->num_vertices);
2050         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2051         GL_LockArrays(0, 0);
2052 }
2053
2054 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(entity_render_t *ent, q3msurface_t *face)
2055 {
2056         rmeshstate_t m;
2057         memset(&m, 0, sizeof(m));
2058         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2059         GL_DepthMask(false);
2060         GL_DepthTest(true);
2061         if (face->texture->skin.glow)
2062         {
2063                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
2064                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2065                 GL_Color(1, 1, 1, 1);
2066         }
2067         else
2068                 GL_Color(0, 0, 0, 1);
2069         m.pointer_vertex = face->data_vertex3f;
2070         R_Mesh_State(&m);
2071         GL_LockArrays(0, face->num_vertices);
2072         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2073         GL_LockArrays(0, 0);
2074 }
2075
2076 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(entity_render_t *ent, q3msurface_t *face)
2077 {
2078         int i;
2079         float mul;
2080         rmeshstate_t m;
2081         memset(&m, 0, sizeof(m));
2082         GL_BlendFunc(GL_ONE, GL_ZERO);
2083         GL_DepthMask(true);
2084         GL_DepthTest(true);
2085         m.tex[0] = R_GetTexture(face->texture->skin.base);
2086         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2087         mul = 2.0f * r_lightmapintensity;
2088         if (mul == 2 && gl_combine.integer)
2089         {
2090                 m.texrgbscale[0] = 2;
2091                 m.pointer_color = face->data_color4f;
2092         }
2093         else if (mul == 1)
2094                 m.pointer_color = face->data_color4f;
2095         else
2096         {
2097                 for (i = 0;i < face->num_vertices;i++)
2098                 {
2099                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * mul;
2100                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * mul;
2101                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * mul;
2102                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2103                 }
2104                 m.pointer_color = varray_color4f;
2105         }
2106         m.pointer_vertex = face->data_vertex3f;
2107         R_Mesh_State(&m);
2108         GL_LockArrays(0, face->num_vertices);
2109         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2110         GL_LockArrays(0, 0);
2111 }
2112
2113 void R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(entity_render_t *ent, q3msurface_t *face)
2114 {
2115         int i;
2116         float mul;
2117         rmeshstate_t m;
2118         memset(&m, 0, sizeof(m));
2119         GL_BlendFunc(GL_ONE, GL_ZERO);
2120         GL_DepthMask(true);
2121         GL_DepthTest(true);
2122         mul = 2.0f * r_lightmapintensity;
2123         if (mul == 1)
2124                 m.pointer_color = face->data_color4f;
2125         else
2126         {
2127                 for (i = 0;i < face->num_vertices;i++)
2128                 {
2129                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * 2.0f;
2130                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * 2.0f;
2131                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * 2.0f;
2132                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2133                 }
2134                 m.pointer_color = varray_color4f;
2135         }
2136         m.pointer_vertex = face->data_vertex3f;
2137         R_Mesh_State(&m);
2138         GL_LockArrays(0, face->num_vertices);
2139         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2140         GL_LockArrays(0, 0);
2141 }
2142
2143 void R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(entity_render_t *ent, q3msurface_t *face)
2144 {
2145         rmeshstate_t m;
2146         memset(&m, 0, sizeof(m));
2147         GL_BlendFunc(GL_ONE, GL_ONE);
2148         GL_DepthMask(true);
2149         GL_DepthTest(true);
2150         m.tex[0] = R_GetTexture(face->texture->skin.base);
2151         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2152         GL_Color(r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), 1);
2153         m.pointer_vertex = face->data_vertex3f;
2154         R_Mesh_State(&m);
2155         GL_LockArrays(0, face->num_vertices);
2156         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2157         GL_LockArrays(0, 0);
2158 }
2159
2160 void R_Q3BSP_DrawFace_TransparentCallback(const void *voident, int facenumber)
2161 {
2162         int i;
2163         float colorscale;
2164         const entity_render_t *ent = voident;
2165         q3msurface_t *face = ent->model->brushq3.data_faces + facenumber;
2166         rmeshstate_t m;
2167         R_Mesh_Matrix(&ent->matrix);
2168         memset(&m, 0, sizeof(m));
2169         if (ent->effects & EF_ADDITIVE)
2170                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2171         else
2172                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2173         GL_DepthMask(false);
2174         GL_DepthTest(true);
2175         m.tex[0] = R_GetTexture(face->texture->skin.base);
2176         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2177         colorscale = r_lightmapintensity;
2178         if (gl_combine.integer)
2179                 m.texrgbscale[0] = 2;
2180         else
2181                 colorscale *= 2.0f;
2182         for (i = 0;i < face->num_vertices;i++)
2183         {
2184                 varray_color4f[i*4+0] = face->data_color4f[i*4+0] * colorscale;
2185                 varray_color4f[i*4+1] = face->data_color4f[i*4+1] * colorscale;
2186                 varray_color4f[i*4+2] = face->data_color4f[i*4+2] * colorscale;
2187                 varray_color4f[i*4+3] = face->data_color4f[i*4+3] * ent->alpha;
2188         }
2189         m.pointer_color = varray_color4f;
2190         m.pointer_vertex = face->data_vertex3f;
2191         R_Mesh_State(&m);
2192         qglDisable(GL_CULL_FACE);
2193         GL_LockArrays(0, face->num_vertices);
2194         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2195         GL_LockArrays(0, 0);
2196         qglEnable(GL_CULL_FACE);
2197 }
2198
2199 void R_Q3BSP_DrawFace(entity_render_t *ent, q3msurface_t *face)
2200 {
2201         if (!face->num_triangles)
2202                 return;
2203         if (face->texture->surfaceflags && (face->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW)))
2204                 return;
2205         c_faces++;
2206         if ((face->texture->surfaceparms & Q3SURFACEPARM_TRANS) || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
2207         {
2208                 vec3_t facecenter, center;
2209                 facecenter[0] = (face->mins[0] + face->maxs[0]) * 0.5f;
2210                 facecenter[1] = (face->mins[1] + face->maxs[1]) * 0.5f;
2211                 facecenter[2] = (face->mins[2] + face->maxs[2]) * 0.5f;
2212                 Matrix4x4_Transform(&ent->matrix, facecenter, center);
2213                 R_MeshQueue_AddTransparent(center, R_Q3BSP_DrawFace_TransparentCallback, ent, face - ent->model->brushq3.data_faces);
2214                 return;
2215         }
2216         R_Mesh_Matrix(&ent->matrix);
2217         if (r_lightmapintensity <= 0)
2218                 R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(ent, face);
2219         else if (!(ent->flags & RENDER_LIGHT))
2220         {
2221                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2222                 if (face->texture->skin.glow)
2223                         R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2224         }
2225         else if (face->lightmaptexture)
2226         {
2227                 if (gl_lightmaps.integer)
2228                         R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(ent, face);
2229                 else
2230                 {
2231                         if (r_textureunits.integer >= 2 && gl_combine.integer)
2232                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(ent, face);
2233                         else
2234                         {
2235                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2236                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(ent, face);
2237                         }
2238                         if (face->texture->skin.glow)
2239                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2240                 }
2241         }
2242         else
2243         {
2244                 if (gl_lightmaps.integer)
2245                         R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(ent, face);
2246                 else
2247                 {
2248                         R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(ent, face);
2249                         if (face->texture->skin.glow)
2250                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2251                 }
2252         }
2253         if (r_ambient.value)
2254                 R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(ent, face);
2255 }
2256
2257 void R_Q3BSP_RecursiveWorldNode(q3mnode_t *node)
2258 {
2259         int i;
2260         q3mleaf_t *leaf;
2261         for (;;)
2262         {
2263                 if (R_CullBox(node->mins, node->maxs))
2264                         return;
2265                 if (!node->plane)
2266                         break;
2267                 c_nodes++;
2268                 R_Q3BSP_RecursiveWorldNode(node->children[0]);
2269                 node = node->children[1];
2270         }
2271         leaf = (q3mleaf_t *)node;
2272         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2273         {
2274                 c_leafs++;
2275                 for (i = 0;i < leaf->numleaffaces;i++)
2276                         leaf->firstleafface[i]->visframe = r_framecount;
2277         }
2278 }
2279
2280 // FIXME: num_leafs needs to be recalculated at load time to include only
2281 // node-referenced leafs, as some maps are incorrectly compiled with leafs for
2282 // the submodels (which would render the submodels occasionally, as part of
2283 // the world - not good)
2284 void R_Q3BSP_MarkLeafPVS(void)
2285 {
2286         int i, j;
2287         q3mleaf_t *leaf;
2288         for (j = 0, leaf = cl.worldmodel->brushq3.data_leafs;j < cl.worldmodel->brushq3.num_leafs;j++, leaf++)
2289         {
2290                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2291                 {
2292                         c_leafs++;
2293                         for (i = 0;i < leaf->numleaffaces;i++)
2294                                 leaf->firstleafface[i]->visframe = r_framecount;
2295                 }
2296         }
2297 }
2298
2299 static int r_q3bsp_framecount = -1;
2300
2301 void R_Q3BSP_DrawSky(entity_render_t *ent)
2302 {
2303         int i;
2304         q3msurface_t *face;
2305         vec3_t modelorg;
2306         model_t *model;
2307         R_Mesh_Matrix(&ent->matrix);
2308         model = ent->model;
2309         if (r_drawcollisionbrushes.integer < 2)
2310         {
2311                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2312                 if (ent == &cl_entities[0].render)
2313                 {
2314                         if (r_q3bsp_framecount != r_framecount)
2315                         {
2316                                 r_q3bsp_framecount = r_framecount;
2317                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2318                                 //R_Q3BSP_MarkLeafPVS();
2319                         }
2320                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2321                                 if (face->visframe == r_framecount && (face->texture->surfaceflags & Q3SURFACEFLAG_SKY) && !R_CullBox(face->mins, face->maxs))
2322                                         R_Q3BSP_DrawSkyFace(ent, face);
2323                 }
2324                 else
2325                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2326                                 if ((face->texture->surfaceflags & Q3SURFACEFLAG_SKY))
2327                                         R_Q3BSP_DrawSkyFace(ent, face);
2328         }
2329 }
2330
2331 void R_Q3BSP_Draw(entity_render_t *ent)
2332 {
2333         int i;
2334         q3msurface_t *face;
2335         vec3_t modelorg;
2336         model_t *model;
2337         qbyte *pvs;
2338         R_Mesh_Matrix(&ent->matrix);
2339         model = ent->model;
2340         if (r_drawcollisionbrushes.integer < 2)
2341         {
2342                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2343                 if (ent == &cl_entities[0].render)
2344                 {
2345                         if (model->brush.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2346                         if (r_q3bsp_framecount != r_framecount)
2347                         {
2348                                 r_q3bsp_framecount = r_framecount;
2349                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2350                                 //R_Q3BSP_MarkLeafPVS();
2351                         }
2352                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2353                                 if (face->visframe == r_framecount && !R_CullBox(face->mins, face->maxs))
2354                                         R_Q3BSP_DrawFace(ent, face);
2355                 }
2356                 else
2357                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2358                                 R_Q3BSP_DrawFace(ent, face);
2359         }
2360         if (r_drawcollisionbrushes.integer >= 1)
2361         {
2362                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2363                 GL_DepthMask(false);
2364                 GL_DepthTest(true);
2365                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
2366                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
2367                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
2368                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
2369                 for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2370                         if (face->num_collisiontriangles)
2371                                 R_Q3BSP_DrawCollisionFace(ent, face);
2372                 qglPolygonOffset(0, 0);
2373         }
2374 }
2375
2376 void R_Q3BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
2377 {
2378         model_t *model = ent->model;
2379         vec3_t lightmins, lightmaxs;
2380         int t, leafindex, marksurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
2381         const int *e;
2382         const float *v[3];
2383         q3msurface_t *surface;
2384         q3mleaf_t *leaf;
2385         const qbyte *pvs;
2386         lightmins[0] = relativelightorigin[0] - lightradius;
2387         lightmins[1] = relativelightorigin[1] - lightradius;
2388         lightmins[2] = relativelightorigin[2] - lightradius;
2389         lightmaxs[0] = relativelightorigin[0] + lightradius;
2390         lightmaxs[1] = relativelightorigin[1] + lightradius;
2391         lightmaxs[2] = relativelightorigin[2] + lightradius;
2392         *outnumclusterspointer = 0;
2393         *outnumsurfacespointer = 0;
2394         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
2395         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
2396         if (model == NULL)
2397         {
2398                 VectorCopy(lightmins, outmins);
2399                 VectorCopy(lightmaxs, outmaxs);
2400                 return;
2401         }
2402         VectorCopy(relativelightorigin, outmins);
2403         VectorCopy(relativelightorigin, outmaxs);
2404         if (model->brush.GetPVS)
2405                 pvs = model->brush.GetPVS(model, relativelightorigin);
2406         else
2407                 pvs = NULL;
2408         // FIXME: use BSP recursion as lights are often small
2409         for (leafindex = 0, leaf = model->brushq3.data_leafs;leafindex < model->brushq3.num_leafs;leafindex++, leaf++)
2410         {
2411                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
2412                 {
2413                         outmins[0] = min(outmins[0], leaf->mins[0]);
2414                         outmins[1] = min(outmins[1], leaf->mins[1]);
2415                         outmins[2] = min(outmins[2], leaf->mins[2]);
2416                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
2417                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
2418                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
2419                         if (outclusterpvs)
2420                         {
2421                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
2422                                 {
2423                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
2424                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
2425                                 }
2426                         }
2427                         if (outsurfacepvs)
2428                         {
2429                                 for (marksurfaceindex = 0;marksurfaceindex < leaf->numleaffaces;marksurfaceindex++)
2430                                 {
2431                                         surface = leaf->firstleafface[marksurfaceindex];
2432                                         surfaceindex = surface - model->brushq3.data_faces;
2433                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
2434                                         {
2435                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs) && !(surface->texture->surfaceparms & Q3SURFACEPARM_TRANS) && !(surface->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW)))
2436                                                 {
2437                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
2438                                                         {
2439                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2440                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2441                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2442                                                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2443                                                                 {
2444                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
2445                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
2446                                                                         break;
2447                                                                 }
2448                                                         }
2449                                                 }
2450                                         }
2451                                 }
2452                         }
2453                 }
2454         }
2455
2456         // limit combined leaf box to light boundaries
2457         outmins[0] = max(outmins[0], lightmins[0]);
2458         outmins[1] = max(outmins[1], lightmins[1]);
2459         outmins[2] = max(outmins[2], lightmins[2]);
2460         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
2461         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
2462         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
2463
2464         *outnumclusterspointer = outnumclusters;
2465         *outnumsurfacespointer = outnumsurfaces;
2466 }
2467
2468 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
2469 {
2470         model_t *model = ent->model;
2471         vec3_t lightmins, lightmaxs;
2472         q3msurface_t *surface;
2473         int surfacelistindex, j, t;
2474         const int *e;
2475         const float *v[3];
2476         if (r_drawcollisionbrushes.integer < 2)
2477         {
2478                 lightmins[0] = relativelightorigin[0] - lightradius;
2479                 lightmins[1] = relativelightorigin[1] - lightradius;
2480                 lightmins[2] = relativelightorigin[2] - lightradius;
2481                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2482                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2483                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2484                 R_Mesh_Matrix(&ent->matrix);
2485                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
2486                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2487                 {
2488                         surface = model->brushq3.data_faces + surfacelist[surfacelistindex];
2489                         // FIXME: check some manner of face->rendermode here?
2490                         if (!(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && surface->num_triangles && !surface->texture->skin.fog)
2491                         {
2492                                 for (j = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < surface->num_triangles;j++, t++, e += 3)
2493                                 {
2494                                         v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2495                                         v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2496                                         v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2497                                         if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2498                                                 shadowmarklist[numshadowmark++] = t;
2499                                 }
2500                         }
2501                 }
2502                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
2503         }
2504 }
2505
2506 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, int numsurfaces, const int *surfacelist)
2507 {
2508         model_t *model = ent->model;
2509         vec3_t lightmins, lightmaxs, modelorg;
2510         q3msurface_t *surface;
2511         int surfacelistindex;
2512         if (r_drawcollisionbrushes.integer < 2)
2513         {
2514                 lightmins[0] = relativelightorigin[0] - lightradius;
2515                 lightmins[1] = relativelightorigin[1] - lightradius;
2516                 lightmins[2] = relativelightorigin[2] - lightradius;
2517                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2518                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2519                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2520                 R_Mesh_Matrix(&ent->matrix);
2521                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2522                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2523                 {
2524                         surface = model->brushq3.data_faces + surfacelist[surfacelistindex];
2525                         if (r_shadow_compilingrtlight)
2526                         {
2527                                 // if compiling an rtlight, capture the mesh
2528                                 Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->data_vertex3f, surface->data_svector3f, surface->data_tvector3f, surface->data_normal3f, surface->data_texcoordtexture2f, surface->num_triangles, surface->data_element3i);
2529                         }
2530                         else if ((ent != &cl_entities[0].render || surface->visframe == r_framecount) && !(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && surface->num_triangles)
2531                                 R_Shadow_RenderLighting(surface->num_vertices, surface->num_triangles, surface->data_element3i, surface->data_vertex3f, surface->data_svector3f, surface->data_tvector3f, surface->data_normal3f, surface->data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, surface->texture->skin.base, surface->texture->skin.nmap, surface->texture->skin.gloss, lightcubemap, LIGHTING_DIFFUSE | LIGHTING_SPECULAR);
2532                 }
2533         }
2534 }
2535
2536 static void gl_surf_start(void)
2537 {
2538 }
2539
2540 static void gl_surf_shutdown(void)
2541 {
2542 }
2543
2544 static void gl_surf_newmap(void)
2545 {
2546 }
2547
2548 void GL_Surf_Init(void)
2549 {
2550         int i;
2551         dlightdivtable[0] = 4194304;
2552         for (i = 1;i < 32768;i++)
2553                 dlightdivtable[i] = 4194304 / (i << 7);
2554
2555         Cvar_RegisterVariable(&r_ambient);
2556         Cvar_RegisterVariable(&r_drawportals);
2557         Cvar_RegisterVariable(&r_testvis);
2558         Cvar_RegisterVariable(&r_floatbuildlightmap);
2559         Cvar_RegisterVariable(&r_detailtextures);
2560         Cvar_RegisterVariable(&r_surfaceworldnode);
2561         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
2562         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2563         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
2564         Cvar_RegisterVariable(&gl_lightmaps);
2565
2566         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2567 }
2568