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         // sky rendering transparently would be too difficult
 729         if (ent->flags & RENDER_TRANSPARENT)
 730                 return;
 731
 732         if (skyrendernow)
 733         {
 734                 skyrendernow = false;
 735                 if (skyrendermasked)
 736                         R_Sky();
 737         }
 738
 739         R_Mesh_Matrix(&ent->matrix);
 740
 741         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 742         if (skyrendermasked)
 743         {
 744                 // depth-only (masking)
 745                 GL_ColorMask(0,0,0,0);
 746                 // just to make sure that braindead drivers don't draw anything
 747                 // despite that colormask...
 748                 GL_BlendFunc(GL_ZERO, GL_ONE);
 749         }
 750         else
 751         {
 752                 // fog sky
 753                 GL_BlendFunc(GL_ONE, GL_ZERO);
 754         }
 755         GL_DepthMask(true);
 756         GL_DepthTest(true);
 757
 758         memset(&m, 0, sizeof(m));
 759         while((surf = *surfchain++) != NULL)
 760         {
 761                 if (surf->visframe == r_framecount)
 762                 {
 763                         m.pointer_vertex = surf->mesh.data_vertex3f;
 764                         R_Mesh_State(&m);
 765                         GL_LockArrays(0, surf->mesh.num_vertices);
 766                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 767                         GL_LockArrays(0, 0);
 768                 }
 769         }
 770         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 771 }
 772
 773 static void RSurfShader_Transparent_Callback(const void *calldata1, int calldata2)
 774 {
 775         const entity_render_t *ent = calldata1;
 776         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 777         rmeshstate_t m;
 778         float currentalpha;
 779         float base, colorscale;
 780         vec3_t modelorg;
 781         texture_t *texture;
 782         float args[4] = {0.05f,0,0,0.04f};
 783         int rendertype, turb, fullbright;
 784
 785         R_Mesh_Matrix(&ent->matrix);
 786         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 787
 788         texture = surf->texinfo->texture;
 789         if (texture->animated)
 790                 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];
 791         currentalpha = ent->alpha;
 792         if (surf->flags & SURF_WATERALPHA)
 793                 currentalpha *= r_wateralpha.value;
 794
 795         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
 796         if (ent->effects & EF_ADDITIVE)
 797         {
 798                 rendertype = SURFRENDER_ADD;
 799                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 800                 GL_DepthMask(false);
 801         }
 802         else if (currentalpha < 1 || texture->skin.fog != NULL)
 803         {
 804                 rendertype = SURFRENDER_ALPHA;
 805                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 806                 GL_DepthMask(false);
 807         }
 808         else
 809         {
 810                 rendertype = SURFRENDER_OPAQUE;
 811                 GL_BlendFunc(GL_ONE, GL_ZERO);
 812                 GL_DepthMask(!(ent->effects & EF_NODEPTHTEST));
 813         }
 814
 815         turb = (surf->flags & SURF_DRAWTURB) && r_waterscroll.value;
 816         fullbright = !(ent->flags & RENDER_LIGHT) || (surf->flags & SURF_DRAWFULLBRIGHT) || !surf->samples;
 817         base = fullbright ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 818         if (surf->flags & SURF_DRAWTURB)
 819                 base *= 0.5f;
 820         if ((surf->flags & SURF_DRAWTURB) && gl_textureshader && r_watershader.value && !fogenabled)
 821         {
 822                 // NVIDIA Geforce3 distortion texture shader on water
 823                 GL_Color(1, 1, 1, currentalpha);
 824                 memset(&m, 0, sizeof(m));
 825                 m.pointer_vertex = surf->mesh.data_vertex3f;
 826                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(cl.time * 16)&63]);
 827                 m.tex[1] = R_GetTexture(texture->skin.base);
 828                 m.texcombinergb[0] = GL_REPLACE;
 829                 m.texcombinergb[1] = GL_REPLACE;
 830                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 831                 m.pointer_texcoord[1] = surf->mesh.data_texcoordtexture2f;
 832                 Matrix4x4_CreateFromQuakeEntity(&m.texmatrix[0], 0, 0, 0, 0, 0, 0, r_watershader.value);
 833                 Matrix4x4_CreateTranslate(&m.texmatrix[1], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 834                 R_Mesh_State(&m);
 835
 836                 GL_ActiveTexture(0);
 837                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 838                 GL_ActiveTexture(1);
 839                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 840                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 841                 qglTexEnvfv(GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 842                 qglEnable(GL_TEXTURE_SHADER_NV);
 843
 844                 GL_LockArrays(0, surf->mesh.num_vertices);
 845                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 846                 GL_LockArrays(0, 0);
 847
 848                 qglDisable(GL_TEXTURE_SHADER_NV);
 849                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 850                 GL_ActiveTexture(0);
 851         }
 852         else
 853         {
 854                 memset(&m, 0, sizeof(m));
 855                 m.pointer_vertex = surf->mesh.data_vertex3f;
 856                 m.pointer_color = varray_color4f;
 857                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 858                 m.tex[0] = R_GetTexture(texture->skin.base);
 859                 if (turb)
 860                 {
 861                         // scrolling in texture matrix
 862                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 863                 }
 864                 colorscale = 1;
 865                 if (gl_combine.integer)
 866                 {
 867                         m.texrgbscale[0] = 4;
 868                         colorscale *= 0.25f;
 869                 }
 870                 R_FillColors(varray_color4f, surf->mesh.num_vertices, base, base, base, currentalpha);
 871                 if (!fullbright)
 872                 {
 873                         if (surf->dlightframe == r_framecount)
 874                                 RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, surf->mesh.num_vertices, surf->mesh.data_vertex3f, varray_color4f, 1);
 875                         if (surf->samples)
 876                                 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);
 877                 }
 878                 RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 879                 R_Mesh_State(&m);
 880                 GL_LockArrays(0, surf->mesh.num_vertices);
 881                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 882                 GL_LockArrays(0, 0);
 883                 if (texture->skin.glow)
 884                 {
 885                         memset(&m, 0, sizeof(m));
 886                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 887                         GL_DepthMask(false);
 888                         m.pointer_color = varray_color4f;
 889                         m.tex[0] = R_GetTexture(texture->skin.glow);
 890                         m.pointer_vertex = surf->mesh.data_vertex3f;
 891                         if (m.tex[0])
 892                         {
 893                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 894                                 if (turb)
 895                                 {
 896                                         // scrolling in texture matrix
 897                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 898                                 }
 899                         }
 900                         R_Mesh_State(&m);
 901                         RSurf_FoggedColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surf->mesh.num_vertices, modelorg);
 902                         GL_LockArrays(0, surf->mesh.num_vertices);
 903                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 904                         GL_LockArrays(0, 0);
 905                 }
 906                 if (fogenabled && rendertype != SURFRENDER_ADD)
 907                 {
 908                         memset(&m, 0, sizeof(m));
 909                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 910                         GL_DepthMask(false);
 911                         m.pointer_color = varray_color4f;
 912                         m.tex[0] = R_GetTexture(texture->skin.fog);
 913                         m.pointer_vertex = surf->mesh.data_vertex3f;
 914                         if (m.tex[0])
 915                         {
 916                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 917                                 if (turb)
 918                                 {
 919                                         // scrolling in texture matrix
 920                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 921                                 }
 922                         }
 923                         R_Mesh_State(&m);
 924                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surf->mesh.num_vertices, modelorg);
 925                         GL_LockArrays(0, surf->mesh.num_vertices);
 926                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 927                         GL_LockArrays(0, 0);
 928                 }
 929         }
 930 }
 931
 932 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 933 {
 934         const msurface_t *surf;
 935         rmeshstate_t m;
 936         int lightmaptexturenum;
 937         memset(&m, 0, sizeof(m));
 938         GL_BlendFunc(GL_ONE, GL_ZERO);
 939         GL_DepthMask(true);
 940         GL_DepthTest(true);
 941         m.tex[0] = R_GetTexture(texture->skin.base);
 942         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 943         m.texrgbscale[1] = 2;
 944         m.tex[2] = R_GetTexture(texture->skin.detail);
 945         m.texrgbscale[2] = 2;
 946         if (texture->skin.glow)
 947         {
 948                 m.tex[3] = R_GetTexture(texture->skin.glow);
 949                 m.texcombinergb[3] = GL_ADD;
 950         }
 951         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
 952
 953         while((surf = *surfchain++) != NULL)
 954         {
 955                 if (surf->visframe == r_framecount)
 956                 {
 957                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
 958                         m.tex[1] = lightmaptexturenum;
 959                         m.pointer_vertex = surf->mesh.data_vertex3f;
 960                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 961                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
 962                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
 963                         m.pointer_texcoord[3] = surf->mesh.data_texcoordtexture2f;
 964                         R_Mesh_State(&m);
 965                         GL_LockArrays(0, surf->mesh.num_vertices);
 966                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 967                         GL_LockArrays(0, 0);
 968                 }
 969         }
 970 }
 971
 972 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 973 {
 974         const msurface_t *surf;
 975         rmeshstate_t m;
 976         int lightmaptexturenum;
 977         memset(&m, 0, sizeof(m));
 978         GL_BlendFunc(GL_ONE, GL_ZERO);
 979         GL_DepthMask(true);
 980         GL_DepthTest(true);
 981         m.tex[0] = R_GetTexture(texture->skin.base);
 982         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 983         m.texrgbscale[1] = 2;
 984         m.tex[2] = R_GetTexture(texture->skin.detail);
 985         m.texrgbscale[2] = 2;
 986         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
 987
 988         while((surf = *surfchain++) != NULL)
 989         {
 990                 if (surf->visframe == r_framecount)
 991                 {
 992                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
 993                         m.tex[1] = lightmaptexturenum;
 994                         m.pointer_vertex = surf->mesh.data_vertex3f;
 995                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 996                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
 997                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
 998                         R_Mesh_State(&m);
 999                         GL_LockArrays(0, surf->mesh.num_vertices);
1000                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1001                         GL_LockArrays(0, 0);
1002                 }
1003         }
1004 }
1005
1006 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1007 {
1008         const msurface_t *surf;
1009         rmeshstate_t m;
1010         int lightmaptexturenum;
1011         memset(&m, 0, sizeof(m));
1012         GL_BlendFunc(GL_ONE, GL_ZERO);
1013         GL_DepthMask(true);
1014         GL_DepthTest(true);
1015         m.tex[0] = R_GetTexture(texture->skin.base);
1016         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1017         m.texrgbscale[1] = 2;
1018         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1019         while((surf = *surfchain++) != NULL)
1020         {
1021                 if (surf->visframe == r_framecount)
1022                 {
1023                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1024                         m.tex[1] = lightmaptexturenum;
1025                         m.pointer_vertex = surf->mesh.data_vertex3f;
1026                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1027                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1028                         R_Mesh_State(&m);
1029                         GL_LockArrays(0, surf->mesh.num_vertices);
1030                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1031                         GL_LockArrays(0, 0);
1032                 }
1033         }
1034 }
1035
1036 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1037 {
1038         const msurface_t *surf;
1039         rmeshstate_t m;
1040         memset(&m, 0, sizeof(m));
1041         GL_DepthMask(true);
1042         GL_DepthTest(true);
1043         GL_BlendFunc(GL_ONE, GL_ZERO);
1044         m.tex[0] = R_GetTexture(texture->skin.base);
1045         if (ent->flags & RENDER_LIGHT)
1046                 GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1047         else
1048                 GL_Color(1, 1, 1, 1);
1049         while((surf = *surfchain++) != NULL)
1050         {
1051                 if (surf->visframe == r_framecount)
1052                 {
1053                         m.pointer_vertex = surf->mesh.data_vertex3f;
1054                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1055                         R_Mesh_State(&m);
1056                         GL_LockArrays(0, surf->mesh.num_vertices);
1057                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1058                         GL_LockArrays(0, 0);
1059                 }
1060         }
1061 }
1062
1063 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1064 {
1065         const msurface_t *surf;
1066         rmeshstate_t m;
1067         int lightmaptexturenum;
1068         memset(&m, 0, sizeof(m));
1069         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1070         GL_DepthMask(false);
1071         GL_DepthTest(true);
1072         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1073         GL_Color(1, 1, 1, 1);
1074         while((surf = *surfchain++) != NULL)
1075         {
1076                 if (surf->visframe == r_framecount)
1077                 {
1078                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1079                         m.tex[0] = lightmaptexturenum;
1080                         m.pointer_vertex = surf->mesh.data_vertex3f;
1081                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1082                         R_Mesh_State(&m);
1083                         GL_LockArrays(0, surf->mesh.num_vertices);
1084                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1085                         GL_LockArrays(0, 0);
1086                 }
1087         }
1088 }
1089
1090 static void RSurfShader_OpaqueWall_Pass_BaseAmbient(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1091 {
1092         const msurface_t *surf;
1093         rmeshstate_t m;
1094         memset(&m, 0, sizeof(m));
1095         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1096         GL_DepthMask(false);
1097         GL_DepthTest(true);
1098         m.tex[0] = R_GetTexture(texture->skin.base);
1099         GL_Color(r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), 1);
1100         while((surf = *surfchain++) != NULL)
1101         {
1102                 if (surf->visframe == r_framecount)
1103                 {
1104                         m.pointer_vertex = surf->mesh.data_vertex3f;
1105                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1106                         R_Mesh_State(&m);
1107                         GL_LockArrays(0, surf->mesh.num_vertices);
1108                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1109                         GL_LockArrays(0, 0);
1110                 }
1111         }
1112 }
1113
1114 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1115 {
1116         const msurface_t *surf;
1117         rmeshstate_t m;
1118         float modelorg[3];
1119         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1120         memset(&m, 0, sizeof(m));
1121         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1122         GL_DepthMask(false);
1123         GL_DepthTest(true);
1124         m.pointer_color = varray_color4f;
1125         while((surf = *surfchain++) != NULL)
1126         {
1127                 if (surf->visframe == r_framecount)
1128                 {
1129                         m.pointer_vertex = surf->mesh.data_vertex3f;
1130                         if (m.tex[0])
1131                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1132                         R_Mesh_State(&m);
1133                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surf->mesh.num_vertices, modelorg);
1134                         GL_LockArrays(0, surf->mesh.num_vertices);
1135                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1136                         GL_LockArrays(0, 0);
1137                 }
1138         }
1139 }
1140
1141 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1142 {
1143         const msurface_t *surf;
1144         rmeshstate_t m;
1145         memset(&m, 0, sizeof(m));
1146         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1147         GL_DepthMask(false);
1148         GL_DepthTest(true);
1149         m.tex[0] = R_GetTexture(texture->skin.detail);
1150         GL_Color(1, 1, 1, 1);
1151         while((surf = *surfchain++) != NULL)
1152         {
1153                 if (surf->visframe == r_framecount)
1154                 {
1155                         m.pointer_vertex = surf->mesh.data_vertex3f;
1156                         m.pointer_texcoord[0] = surf->mesh.data_texcoorddetail2f;
1157                         R_Mesh_State(&m);
1158                         GL_LockArrays(0, surf->mesh.num_vertices);
1159                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1160                         GL_LockArrays(0, 0);
1161                 }
1162         }
1163 }
1164
1165 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1166 {
1167         const msurface_t *surf;
1168         rmeshstate_t m;
1169         memset(&m, 0, sizeof(m));
1170         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1171         GL_DepthMask(false);
1172         GL_DepthTest(true);
1173         m.tex[0] = R_GetTexture(texture->skin.glow);
1174         GL_Color(1, 1, 1, 1);
1175         while((surf = *surfchain++) != NULL)
1176         {
1177                 if (surf->visframe == r_framecount)
1178                 {
1179                         m.pointer_vertex = surf->mesh.data_vertex3f;
1180                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1181                         R_Mesh_State(&m);
1182                         GL_LockArrays(0, surf->mesh.num_vertices);
1183                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1184                         GL_LockArrays(0, 0);
1185                 }
1186         }
1187 }
1188
1189 /*
1190 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1191 {
1192         const msurface_t *surf;
1193         rmeshstate_t m;
1194         memset(&m, 0, sizeof(m));
1195         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1196         GL_DepthMask(true);
1197         m.tex[0] = R_GetTexture(texture->skin.glow);
1198         if (m.tex[0])
1199                 GL_Color(1, 1, 1, 1);
1200         else
1201                 GL_Color(0, 0, 0, 1);
1202         while((surf = *surfchain++) != NULL)
1203         {
1204                 if (surf->visframe == r_framecount)
1205                 {
1206                         m.pointer_vertex = surf->mesh.data_vertex3f;
1207                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1208                         R_Mesh_State(&m);
1209                         GL_LockArrays(0, surf->mesh.num_vertices);
1210                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1211                         GL_LockArrays(0, 0);
1212                 }
1213         }
1214 }
1215 */
1216
1217 static void RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1218 {
1219         const msurface_t *surf;
1220         rmeshstate_t m;
1221         int lightmaptexturenum;
1222         memset(&m, 0, sizeof(m));
1223         GL_BlendFunc(GL_ONE, GL_ZERO);
1224         GL_DepthMask(true);
1225         GL_DepthTest(true);
1226         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1227         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
1228         while((surf = *surfchain++) != NULL)
1229         {
1230                 if (surf->visframe == r_framecount)
1231                 {
1232                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1233                         m.tex[0] = lightmaptexturenum;
1234                         m.pointer_vertex = surf->mesh.data_vertex3f;
1235                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1236                         R_Mesh_State(&m);
1237                         GL_LockArrays(0, surf->mesh.num_vertices);
1238                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1239                         GL_LockArrays(0, 0);
1240                 }
1241         }
1242 }
1243
1244 void R_UpdateTextureInfo(entity_render_t *ent)
1245 {
1246         int i, texframe, alttextures;
1247         texture_t *t;
1248
1249         if (!ent->model)
1250                 return;
1251
1252         alttextures = ent->frame != 0;
1253         texframe = (int)(cl.time * 5.0f);
1254         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1255         {
1256                 t = ent->model->brushq1.textures + i;
1257                 t->currentalpha = ent->alpha;
1258                 if (t->flags & SURF_WATERALPHA)
1259                         t->currentalpha *= r_wateralpha.value;
1260                 if (ent->effects & EF_ADDITIVE)
1261                         t->rendertype = SURFRENDER_ADD;
1262                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1263                         t->rendertype = SURFRENDER_ALPHA;
1264                 else
1265                         t->rendertype = SURFRENDER_OPAQUE;
1266                 // we don't need to set currentframe if t->animated is false because
1267                 // it was already set up by the texture loader for non-animating
1268                 if (t->animated)
1269                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1270         }
1271 }
1272
1273 void R_UpdateLightmapInfo(entity_render_t *ent)
1274 {
1275         int i;
1276         msurface_t *surface, **surfacechain;
1277         model_t *model = ent->model;
1278         if (!model)
1279                 return;
1280         if (r_dynamic.integer && !r_rtdlight)
1281                 R_MarkLights(ent);
1282         for (i = 0;i < model->brushq1.light_styles;i++)
1283         {
1284                 if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1285                 {
1286                         model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1287                         for (surfacechain = model->brushq1.light_styleupdatechains[i];(surface = *surfacechain);surfacechain++)
1288                                 surface->cached_dlight = true;
1289                 }
1290         }
1291 }
1292
1293 void R_PrepareSurfaces(entity_render_t *ent)
1294 {
1295         int i, numsurfaces, *surfacevisframes;
1296         model_t *model;
1297         msurface_t *surf, *surfaces;
1298         vec3_t modelorg;
1299
1300         if (!ent->model)
1301                 return;
1302
1303         model = ent->model;
1304         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1305         numsurfaces = model->nummodelsurfaces;
1306         surfaces = model->brushq1.surfaces + model->firstmodelsurface;
1307         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1308         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1309         {
1310                 if (surfacevisframes[i] == r_framecount)
1311                 {
1312 #if !WORLDNODECULLBACKFACES
1313                         // mark any backface surfaces as not visible
1314                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1315                         {
1316                                 if (!(surf->flags & SURF_PLANEBACK))
1317                                         surfacevisframes[i] = -1;
1318                         }
1319                         else
1320                         {
1321                                 if ((surf->flags & SURF_PLANEBACK))
1322                                         surfacevisframes[i] = -1;
1323                         }
1324                         if (surfacevisframes[i] == r_framecount)
1325 #endif
1326                         {
1327                                 c_faces++;
1328                                 surf->visframe = r_framecount;
1329                                 if (surf->cached_dlight && surf->lightmaptexture != NULL)
1330                                         R_BuildLightMap(ent, surf);
1331                         }
1332                 }
1333         }
1334 }
1335
1336 void R_DrawSurfaces(entity_render_t *ent, int flagsmask)
1337 {
1338         int texturenumber, f;
1339         vec3_t center;
1340         msurface_t *surf, **chain, **surfchain;
1341         texture_t *t, *texture;
1342         model_t *model = ent->model;
1343         if (model == NULL)
1344                 return;
1345         R_Mesh_Matrix(&ent->matrix);
1346         for (texturenumber = 0, t = model->brushq1.textures;texturenumber < model->brushq1.numtextures;texturenumber++, t++)
1347         {
1348                 if ((f = t->flags & flagsmask) && (texture = t->currentframe) && (surfchain = model->brushq1.pvstexturechains[texturenumber]) != NULL)
1349                 {
1350                         if (texture->flags & SURF_LIGHTMAP)
1351                         {
1352                                 if (gl_lightmaps.integer)
1353                                 {
1354                                         RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(ent, texture, surfchain);
1355                                         if (fogenabled)
1356                                                 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1357                                 }
1358                                 else if (texture->rendertype != SURFRENDER_OPAQUE)
1359                                 {
1360                                         // transparent vertex shaded from lightmap
1361                                         for (chain = surfchain;(surf = *chain) != NULL;chain++)
1362                                         {
1363                                                 if (surf->visframe == r_framecount)
1364                                                 {
1365                                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1366                                                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : center, RSurfShader_Transparent_Callback, ent, surf - ent->model->brushq1.surfaces);
1367                                                 }
1368                                         }
1369                                 }
1370                                 else
1371                                 {
1372                                         if (!(ent->flags & RENDER_LIGHT))
1373                                         {
1374                                                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1375                                                 if (r_detailtextures.integer)
1376                                                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1377                                                 if (texture->skin.glow)
1378                                                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1379                                         }
1380                                         else if (r_textureunits.integer >= 4 && gl_combine.integer && r_detailtextures.integer && r_ambient.value <= 0)
1381                                                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(ent, texture, surfchain);
1382                                         else
1383                                         {
1384                                                 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer && r_ambient.value <= 0)
1385                                                         RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(ent, texture, surfchain);
1386                                                 else
1387                                                 {
1388                                                         if (r_textureunits.integer >= 2 && gl_combine.integer)
1389                                                                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(ent, texture, surfchain);
1390                                                         else
1391                                                         {
1392                                                                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1393                                                                 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1394                                                         }
1395                                                         if (r_ambient.value > 0)
1396                                                                 RSurfShader_OpaqueWall_Pass_BaseAmbient(ent, texture, surfchain);
1397                                                         if (r_detailtextures.integer)
1398                                                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1399                                                 }
1400                                                 if (texture->skin.glow)
1401                                                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1402                                         }
1403                                         if (fogenabled)
1404                                                 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1405                                 }
1406                         }
1407                         else if (texture->flags & SURF_DRAWTURB)
1408                         {
1409                                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1410                                 {
1411                                         if (surf->visframe == r_framecount)
1412                                         {
1413                                                 if (texture->rendertype == SURFRENDER_OPAQUE)
1414                                                         RSurfShader_Transparent_Callback(ent, surf - ent->model->brushq1.surfaces);
1415                                                 else
1416                                                 {
1417                                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1418                                                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : center, RSurfShader_Transparent_Callback, ent, surf - ent->model->brushq1.surfaces);
1419                                                 }
1420                                         }
1421                                 }
1422                         }
1423                         else if (texture->flags & SURF_DRAWSKY)
1424                                 RSurfShader_Sky(ent, texture, surfchain);
1425                 }
1426         }
1427 }
1428
1429 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1430 {
1431         int i;
1432         float *v;
1433         rmeshstate_t m;
1434         const entity_render_t *ent = calldata1;
1435         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1436         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1437         GL_DepthMask(false);
1438         GL_DepthTest(true);
1439         R_Mesh_Matrix(&ent->matrix);
1440
1441         memset(&m, 0, sizeof(m));
1442         m.pointer_vertex = varray_vertex3f;
1443         R_Mesh_State(&m);
1444
1445         i = portal - ent->model->brushq1.portals;
1446         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1447                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1448                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1449                          0.125f);
1450         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
1451         {
1452                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1453                         VectorCopy(portal->points[i].position, v);
1454         }
1455         else
1456                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1457                         VectorCopy(portal->points[i].position, v);
1458         GL_LockArrays(0, portal->numpoints);
1459         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1460         GL_LockArrays(0, 0);
1461 }
1462
1463 // LordHavoc: this is just a nice debugging tool, very slow
1464 static void R_DrawPortals(entity_render_t *ent)
1465 {
1466         int i;
1467         mportal_t *portal, *endportal;
1468         float temp[3], center[3], f;
1469         if (ent->model == NULL)
1470                 return;
1471         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1472         {
1473                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1474                 {
1475                         VectorClear(temp);
1476                         for (i = 0;i < portal->numpoints;i++)
1477                                 VectorAdd(temp, portal->points[i].position, temp);
1478                         f = ixtable[portal->numpoints];
1479                         VectorScale(temp, f, temp);
1480                         Matrix4x4_Transform(&ent->matrix, temp, center);
1481                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1482                 }
1483         }
1484 }
1485
1486 void R_PrepareBrushModel(entity_render_t *ent)
1487 {
1488         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1489         msurface_t *surf;
1490         model_t *model;
1491 #if WORLDNODECULLBACKFACES
1492         vec3_t modelorg;
1493 #endif
1494
1495         // because bmodels can be reused, we have to decide which things to render
1496         // from scratch every time
1497         model = ent->model;
1498         if (model == NULL)
1499                 return;
1500 #if WORLDNODECULLBACKFACES
1501         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1502 #endif
1503         numsurfaces = model->nummodelsurfaces;
1504         surf = model->brushq1.surfaces + model->firstmodelsurface;
1505         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1506         surfacepvsframes = model->brushq1.surfacepvsframes + model->firstmodelsurface;
1507         for (i = 0;i < numsurfaces;i++, surf++)
1508         {
1509 #if WORLDNODECULLBACKFACES
1510                 // mark any backface surfaces as not visible
1511                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1512                 {
1513                         if ((surf->flags & SURF_PLANEBACK))
1514                                 surfacevisframes[i] = r_framecount;
1515                 }
1516                 else if (!(surf->flags & SURF_PLANEBACK))
1517                         surfacevisframes[i] = r_framecount;
1518 #else
1519                 surfacevisframes[i] = r_framecount;
1520 #endif
1521                 surf->dlightframe = -1;
1522         }
1523         R_UpdateTextureInfo(ent);
1524         R_UpdateLightmapInfo(ent);
1525 }
1526
1527 void R_SurfaceWorldNode (entity_render_t *ent)
1528 {
1529         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1530         msurface_t *surf;
1531         mleaf_t *leaf;
1532         model_t *model;
1533         vec3_t modelorg;
1534
1535         // equivilant to quake's RecursiveWorldNode but faster and more effective
1536         model = ent->model;
1537         if (model == NULL)
1538                 return;
1539         surfacevisframes = model->brushq1.surfacevisframes + model->firstmodelsurface;
1540         surfacepvsframes = model->brushq1.surfacepvsframes + model->firstmodelsurface;
1541         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1542
1543         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1544         {
1545                 if (!R_CullBox (leaf->mins, leaf->maxs))
1546                 {
1547                         c_leafs++;
1548                         leaf->visframe = r_framecount;
1549                 }
1550         }
1551
1552         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1553         {
1554                 surfnum = model->brushq1.pvssurflist[i];
1555                 surf = model->brushq1.surfaces + surfnum;
1556 #if WORLDNODECULLBACKFACES
1557                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1558                 {
1559                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1560                                 surfacevisframes[surfnum] = r_framecount;
1561                 }
1562                 else
1563                 {
1564                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1565                                 surfacevisframes[surfnum] = r_framecount;
1566                 }
1567 #else
1568                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1569                         surfacevisframes[surfnum] = r_framecount;
1570 #endif
1571         }
1572 }
1573
1574 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1575 {
1576         int c, leafstackpos, *mark, *surfacevisframes;
1577 #if WORLDNODECULLBACKFACES
1578         int n;
1579         msurface_t *surf;
1580 #endif
1581         mleaf_t *leaf, *leafstack[8192];
1582         mportal_t *p;
1583         vec3_t modelorg;
1584         msurface_t *surfaces;
1585         if (ent->model == NULL)
1586                 return;
1587         // LordHavoc: portal-passage worldnode with PVS;
1588         // follows portals leading outward from viewleaf, does not venture
1589         // offscreen or into leafs that are not visible, faster than Quake's
1590         // RecursiveWorldNode
1591         surfaces = ent->model->brushq1.surfaces;
1592         surfacevisframes = ent->model->brushq1.surfacevisframes;
1593         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1594         viewleaf->worldnodeframe = r_framecount;
1595         leafstack[0] = viewleaf;
1596         leafstackpos = 1;
1597         while (leafstackpos)
1598         {
1599                 c_leafs++;
1600                 leaf = leafstack[--leafstackpos];
1601                 leaf->visframe = r_framecount;
1602                 // draw any surfaces bounding this leaf
1603                 if (leaf->nummarksurfaces)
1604                 {
1605                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1606                         {
1607 #if WORLDNODECULLBACKFACES
1608                                 n = *mark++;
1609                                 if (surfacevisframes[n] != r_framecount)
1610                                 {
1611                                         surf = surfaces + n;
1612                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1613                                         {
1614                                                 if ((surf->flags & SURF_PLANEBACK))
1615                                                         surfacevisframes[n] = r_framecount;
1616                                         }
1617                                         else
1618                                         {
1619                                                 if (!(surf->flags & SURF_PLANEBACK))
1620                                                         surfacevisframes[n] = r_framecount;
1621                                         }
1622                                 }
1623 #else
1624                                 surfacevisframes[*mark++] = r_framecount;
1625 #endif
1626                         }
1627                 }
1628                 // follow portals into other leafs
1629                 for (p = leaf->portals;p;p = p->next)
1630                 {
1631                         // LordHavoc: this DotProduct hurts less than a cache miss
1632                         // (which is more likely to happen if backflowing through leafs)
1633                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1634                         {
1635                                 leaf = p->past;
1636                                 if (leaf->worldnodeframe != r_framecount)
1637                                 {
1638                                         leaf->worldnodeframe = r_framecount;
1639                                         // FIXME: R_CullBox is absolute, should be done relative
1640                                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
1641                                                 leafstack[leafstackpos++] = leaf;
1642                                 }
1643                         }
1644                 }
1645         }
1646 }
1647
1648 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1649 {
1650         int j, c, *surfacepvsframes, *mark;
1651         mleaf_t *leaf;
1652         model_t *model;
1653
1654         model = ent->model;
1655         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1656         {
1657                 model->brushq1.pvsframecount++;
1658                 model->brushq1.pvsviewleaf = viewleaf;
1659                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1660                 model->brushq1.pvsleafchain = NULL;
1661                 model->brushq1.pvssurflistlength = 0;
1662                 if (viewleaf)
1663                 {
1664                         surfacepvsframes = model->brushq1.surfacepvsframes;
1665                         for (j = 0, leaf = model->brushq1.data_leafs;j < model->brushq1.num_leafs;j++, leaf++)
1666                         {
1667                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
1668                                 {
1669                                         leaf->pvsframe = model->brushq1.pvsframecount;
1670                                         leaf->pvschain = model->brushq1.pvsleafchain;
1671                                         model->brushq1.pvsleafchain = leaf;
1672                                         // mark surfaces bounding this leaf as visible
1673                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1674                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1675                                 }
1676                         }
1677                         model->brushq1.BuildPVSTextureChains(model);
1678                 }
1679         }
1680 }
1681
1682 void R_WorldVisibility(entity_render_t *ent)
1683 {
1684         vec3_t modelorg;
1685         mleaf_t *viewleaf;
1686
1687         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1688         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1689         R_PVSUpdate(ent, viewleaf);
1690
1691         if (!viewleaf)
1692                 return;
1693
1694         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1695                 R_SurfaceWorldNode (ent);
1696         else
1697                 R_PortalWorldNode (ent, viewleaf);
1698
1699         if (r_drawportals.integer)
1700                 R_DrawPortals(ent);
1701 }
1702
1703 void R_Q1BSP_DrawSky(entity_render_t *ent)
1704 {
1705         if (ent->model == NULL)
1706                 return;
1707         if (ent != &cl_entities[0].render)
1708                 R_PrepareBrushModel(ent);
1709         R_PrepareSurfaces(ent);
1710         R_DrawSurfaces(ent, SURF_DRAWSKY);
1711 }
1712
1713 void R_Q1BSP_Draw(entity_render_t *ent)
1714 {
1715         if (ent->model == NULL)
1716                 return;
1717         c_bmodels++;
1718         if (ent != &cl_entities[0].render)
1719                 R_PrepareBrushModel(ent);
1720         R_PrepareSurfaces(ent);
1721         R_UpdateTextureInfo(ent);
1722         R_UpdateLightmapInfo(ent);
1723         R_DrawSurfaces(ent, SURF_DRAWTURB | SURF_LIGHTMAP);
1724 }
1725
1726 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)
1727 {
1728         model_t *model = ent->model;
1729         vec3_t lightmins, lightmaxs;
1730         int t, leafindex, marksurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
1731         const int *e;
1732         const float *v[3];
1733         msurface_t *surface;
1734         mleaf_t *leaf;
1735         const qbyte *pvs;
1736         lightmins[0] = relativelightorigin[0] - lightradius;
1737         lightmins[1] = relativelightorigin[1] - lightradius;
1738         lightmins[2] = relativelightorigin[2] - lightradius;
1739         lightmaxs[0] = relativelightorigin[0] + lightradius;
1740         lightmaxs[1] = relativelightorigin[1] + lightradius;
1741         lightmaxs[2] = relativelightorigin[2] + lightradius;
1742         *outnumclusterspointer = 0;
1743         *outnumsurfacespointer = 0;
1744         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
1745         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
1746         if (model == NULL)
1747         {
1748                 VectorCopy(lightmins, outmins);
1749                 VectorCopy(lightmaxs, outmaxs);
1750                 return;
1751         }
1752         VectorCopy(relativelightorigin, outmins);
1753         VectorCopy(relativelightorigin, outmaxs);
1754         if (model->brush.GetPVS)
1755                 pvs = model->brush.GetPVS(model, relativelightorigin);
1756         else
1757                 pvs = NULL;
1758         // FIXME: use BSP recursion as lights are often small
1759         for (leafindex = 0, leaf = model->brushq1.data_leafs;leafindex < model->brushq1.num_leafs;leafindex++, leaf++)
1760         {
1761                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
1762                 {
1763                         outmins[0] = min(outmins[0], leaf->mins[0]);
1764                         outmins[1] = min(outmins[1], leaf->mins[1]);
1765                         outmins[2] = min(outmins[2], leaf->mins[2]);
1766                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
1767                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
1768                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
1769                         if (outclusterpvs)
1770                         {
1771                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
1772                                 {
1773                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
1774                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
1775                                 }
1776                         }
1777                         if (outsurfacepvs)
1778                         {
1779                                 for (marksurfaceindex = 0;marksurfaceindex < leaf->nummarksurfaces;marksurfaceindex++)
1780                                 {
1781                                         surfaceindex = leaf->firstmarksurface[marksurfaceindex];
1782                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
1783                                         {
1784                                                 surface = model->brushq1.surfaces + surfaceindex;
1785                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->poly_mins, surface->poly_maxs) && (surface->flags & SURF_LIGHTMAP) && !surface->texinfo->texture->skin.fog)
1786                                                 {
1787                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
1788                                                         {
1789                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1790                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1791                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1792                                                                 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])))
1793                                                                 {
1794                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
1795                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
1796                                                                         break;
1797                                                                 }
1798                                                         }
1799                                                 }
1800                                         }
1801                                 }
1802                         }
1803                 }
1804         }
1805
1806         // limit combined leaf box to light boundaries
1807         outmins[0] = max(outmins[0], lightmins[0]);
1808         outmins[1] = max(outmins[1], lightmins[1]);
1809         outmins[2] = max(outmins[2], lightmins[2]);
1810         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
1811         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
1812         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
1813
1814         *outnumclusterspointer = outnumclusters;
1815         *outnumsurfacespointer = outnumsurfaces;
1816 }
1817
1818 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
1819 {
1820         model_t *model = ent->model;
1821         vec3_t lightmins, lightmaxs;
1822         msurface_t *surface;
1823         int surfacelistindex, j, t;
1824         const int *e;
1825         const float *v[3];
1826         if (r_drawcollisionbrushes.integer < 2)
1827         {
1828                 lightmins[0] = relativelightorigin[0] - lightradius;
1829                 lightmins[1] = relativelightorigin[1] - lightradius;
1830                 lightmins[2] = relativelightorigin[2] - lightradius;
1831                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1832                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1833                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1834                 R_Mesh_Matrix(&ent->matrix);
1835                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1836                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1837                 {
1838                         surface = model->brushq1.surfaces + surfacelist[surfacelistindex];
1839                         for (j = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < surface->mesh.num_triangles;j++, t++, e += 3)
1840                         {
1841                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1842                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1843                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1844                                 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])))
1845                                         shadowmarklist[numshadowmark++] = t;
1846                         }
1847                 }
1848                 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);
1849         }
1850 }
1851
1852 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)
1853 {
1854         model_t *model = ent->model;
1855         vec3_t lightmins, lightmaxs, modelorg;
1856         msurface_t *surface;
1857         texture_t *t;
1858         int surfacelistindex;
1859         if (r_drawcollisionbrushes.integer < 2)
1860         {
1861                 lightmins[0] = relativelightorigin[0] - lightradius;
1862                 lightmins[1] = relativelightorigin[1] - lightradius;
1863                 lightmins[2] = relativelightorigin[2] - lightradius;
1864                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1865                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1866                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1867                 R_Mesh_Matrix(&ent->matrix);
1868                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1869                 R_UpdateTextureInfo(ent);
1870                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1871                 {
1872                         surface = model->brushq1.surfaces + surfacelist[surfacelistindex];
1873                         if (r_shadow_compilingrtlight)
1874                         {
1875                                 // if compiling an rtlight, capture the mesh
1876                                 t = surface->texinfo->texture;
1877                                 if (t->flags & SURF_LIGHTMAP && t->skin.fog == NULL)
1878                                         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);
1879                         }
1880                         else if (ent != &cl_entities[0].render || surface->visframe == r_framecount)
1881                         {
1882                                 t = surface->texinfo->texture->currentframe;
1883                                 if (t->flags & SURF_LIGHTMAP)
1884                                         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);
1885                         }
1886                 }
1887         }
1888 }
1889
1890 void R_DrawCollisionBrush(colbrushf_t *brush)
1891 {
1892         int i;
1893         rmeshstate_t m;
1894         memset(&m, 0, sizeof(m));
1895         m.pointer_vertex = brush->points->v;
1896         R_Mesh_State(&m);
1897         i = ((int)brush) / sizeof(colbrushf_t);
1898         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1899         GL_LockArrays(0, brush->numpoints);
1900         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1901         GL_LockArrays(0, 0);
1902 }
1903
1904 void R_Q3BSP_DrawCollisionFace(entity_render_t *ent, q3msurface_t *face)
1905 {
1906         int i;
1907         rmeshstate_t m;
1908         if (!face->num_collisiontriangles)
1909                 return;
1910         memset(&m, 0, sizeof(m));
1911         m.pointer_vertex = face->data_collisionvertex3f;
1912         R_Mesh_State(&m);
1913         i = ((int)face) / sizeof(q3msurface_t);
1914         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1915         GL_LockArrays(0, face->num_collisionvertices);
1916         R_Mesh_Draw(face->num_collisionvertices, face->num_collisiontriangles, face->data_collisionelement3i);
1917         GL_LockArrays(0, 0);
1918 }
1919
1920 void R_Q3BSP_DrawSkyFace(entity_render_t *ent, q3msurface_t *face)
1921 {
1922         rmeshstate_t m;
1923         if (!face->num_triangles)
1924                 return;
1925         // drawing sky transparently would be too difficult
1926         if (ent->flags & RENDER_TRANSPARENT)
1927                 return;
1928         c_faces++;
1929         if (skyrendernow)
1930         {
1931                 skyrendernow = false;
1932                 if (skyrendermasked)
1933                         R_Sky();
1934         }
1935         if (!r_q3bsp_renderskydepth.integer)
1936                 return;
1937
1938         R_Mesh_Matrix(&ent->matrix);
1939
1940         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1941         if (skyrendermasked)
1942         {
1943                 // depth-only (masking)
1944                 GL_ColorMask(0,0,0,0);
1945                 // just to make sure that braindead drivers don't draw anything
1946                 // despite that colormask...
1947                 GL_BlendFunc(GL_ZERO, GL_ONE);
1948         }
1949         else
1950         {
1951                 // fog sky
1952                 GL_BlendFunc(GL_ONE, GL_ZERO);
1953         }
1954         GL_DepthMask(true);
1955         GL_DepthTest(true);
1956
1957         memset(&m, 0, sizeof(m));
1958         m.pointer_vertex = face->data_vertex3f;
1959         R_Mesh_State(&m);
1960
1961         GL_LockArrays(0, face->num_vertices);
1962         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1963         GL_LockArrays(0, 0);
1964         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
1965 }
1966
1967 void R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(entity_render_t *ent, q3msurface_t *face)
1968 {
1969         rmeshstate_t m;
1970         memset(&m, 0, sizeof(m));
1971         GL_BlendFunc(GL_ONE, GL_ZERO);
1972         GL_DepthMask(true);
1973         GL_DepthTest(true);
1974         if (face->texture->skin.glow)
1975         {
1976                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
1977                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1978                 GL_Color(1, 1, 1, 1);
1979         }
1980         else
1981                 GL_Color(0, 0, 0, 1);
1982         m.pointer_vertex = face->data_vertex3f;
1983         R_Mesh_State(&m);
1984         GL_LockArrays(0, face->num_vertices);
1985         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1986         GL_LockArrays(0, 0);
1987 }
1988
1989 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(entity_render_t *ent, q3msurface_t *face)
1990 {
1991         rmeshstate_t m;
1992         memset(&m, 0, sizeof(m));
1993         GL_BlendFunc(GL_ONE, GL_ZERO);
1994         GL_DepthMask(true);
1995         GL_DepthTest(true);
1996         m.tex[0] = R_GetTexture(face->texture->skin.base);
1997         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1998         m.tex[1] = R_GetTexture(face->lightmaptexture);
1999         m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
2000         m.texrgbscale[1] = 2;
2001         GL_Color(1, 1, 1, 1);
2002         m.pointer_vertex = face->data_vertex3f;
2003         R_Mesh_State(&m);
2004         GL_LockArrays(0, face->num_vertices);
2005         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2006         GL_LockArrays(0, 0);
2007 }
2008
2009 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(entity_render_t *ent, q3msurface_t *face)
2010 {
2011         rmeshstate_t m;
2012         memset(&m, 0, sizeof(m));
2013         GL_BlendFunc(GL_ONE, GL_ZERO);
2014         GL_DepthMask(true);
2015         GL_DepthTest(true);
2016         m.tex[0] = R_GetTexture(face->texture->skin.base);
2017         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2018         GL_Color(1, 1, 1, 1);
2019         m.pointer_vertex = face->data_vertex3f;
2020         R_Mesh_State(&m);
2021         GL_LockArrays(0, face->num_vertices);
2022         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2023         GL_LockArrays(0, 0);
2024 }
2025
2026 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(entity_render_t *ent, q3msurface_t *face)
2027 {
2028         rmeshstate_t m;
2029         memset(&m, 0, sizeof(m));
2030         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
2031         GL_DepthMask(false);
2032         GL_DepthTest(true);
2033         m.tex[0] = R_GetTexture(face->lightmaptexture);
2034         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2035         GL_Color(1, 1, 1, 1);
2036         m.pointer_vertex = face->data_vertex3f;
2037         R_Mesh_State(&m);
2038         GL_LockArrays(0, face->num_vertices);
2039         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2040         GL_LockArrays(0, 0);
2041 }
2042
2043 void R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(entity_render_t *ent, q3msurface_t *face)
2044 {
2045         rmeshstate_t m;
2046         memset(&m, 0, sizeof(m));
2047         GL_BlendFunc(GL_ONE, GL_ZERO);
2048         GL_DepthMask(true);
2049         GL_DepthTest(true);
2050         m.tex[0] = R_GetTexture(face->lightmaptexture);
2051         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2052         GL_Color(r_lightmapintensity, r_lightmapintensity, r_lightmapintensity, 1);
2053         m.pointer_vertex = face->data_vertex3f;
2054         R_Mesh_State(&m);
2055         GL_LockArrays(0, face->num_vertices);
2056         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2057         GL_LockArrays(0, 0);
2058 }
2059
2060 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(entity_render_t *ent, q3msurface_t *face)
2061 {
2062         rmeshstate_t m;
2063         memset(&m, 0, sizeof(m));
2064         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2065         GL_DepthMask(false);
2066         GL_DepthTest(true);
2067         if (face->texture->skin.glow)
2068         {
2069                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
2070                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2071                 GL_Color(1, 1, 1, 1);
2072         }
2073         else
2074                 GL_Color(0, 0, 0, 1);
2075         m.pointer_vertex = face->data_vertex3f;
2076         R_Mesh_State(&m);
2077         GL_LockArrays(0, face->num_vertices);
2078         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2079         GL_LockArrays(0, 0);
2080 }
2081
2082 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(entity_render_t *ent, q3msurface_t *face)
2083 {
2084         int i;
2085         float mul;
2086         rmeshstate_t m;
2087         memset(&m, 0, sizeof(m));
2088         GL_BlendFunc(GL_ONE, GL_ZERO);
2089         GL_DepthMask(true);
2090         GL_DepthTest(true);
2091         m.tex[0] = R_GetTexture(face->texture->skin.base);
2092         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2093         mul = 2.0f * r_lightmapintensity;
2094         if (mul == 2 && gl_combine.integer)
2095         {
2096                 m.texrgbscale[0] = 2;
2097                 m.pointer_color = face->data_color4f;
2098         }
2099         else if (mul == 1)
2100                 m.pointer_color = face->data_color4f;
2101         else
2102         {
2103                 for (i = 0;i < face->num_vertices;i++)
2104                 {
2105                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * mul;
2106                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * mul;
2107                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * mul;
2108                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2109                 }
2110                 m.pointer_color = varray_color4f;
2111         }
2112         m.pointer_vertex = face->data_vertex3f;
2113         R_Mesh_State(&m);
2114         GL_LockArrays(0, face->num_vertices);
2115         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2116         GL_LockArrays(0, 0);
2117 }
2118
2119 void R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(entity_render_t *ent, q3msurface_t *face)
2120 {
2121         int i;
2122         float mul;
2123         rmeshstate_t m;
2124         memset(&m, 0, sizeof(m));
2125         GL_BlendFunc(GL_ONE, GL_ZERO);
2126         GL_DepthMask(true);
2127         GL_DepthTest(true);
2128         mul = 2.0f * r_lightmapintensity;
2129         if (mul == 1)
2130                 m.pointer_color = face->data_color4f;
2131         else
2132         {
2133                 for (i = 0;i < face->num_vertices;i++)
2134                 {
2135                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * 2.0f;
2136                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * 2.0f;
2137                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * 2.0f;
2138                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2139                 }
2140                 m.pointer_color = varray_color4f;
2141         }
2142         m.pointer_vertex = face->data_vertex3f;
2143         R_Mesh_State(&m);
2144         GL_LockArrays(0, face->num_vertices);
2145         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2146         GL_LockArrays(0, 0);
2147 }
2148
2149 void R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(entity_render_t *ent, q3msurface_t *face)
2150 {
2151         rmeshstate_t m;
2152         memset(&m, 0, sizeof(m));
2153         GL_BlendFunc(GL_ONE, GL_ONE);
2154         GL_DepthMask(true);
2155         GL_DepthTest(true);
2156         m.tex[0] = R_GetTexture(face->texture->skin.base);
2157         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2158         GL_Color(r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), 1);
2159         m.pointer_vertex = face->data_vertex3f;
2160         R_Mesh_State(&m);
2161         GL_LockArrays(0, face->num_vertices);
2162         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2163         GL_LockArrays(0, 0);
2164 }
2165
2166 void R_Q3BSP_DrawFace_TransparentCallback(const void *voident, int facenumber)
2167 {
2168         int i;
2169         float colorscale;
2170         const entity_render_t *ent = voident;
2171         q3msurface_t *face = ent->model->brushq3.data_faces + facenumber;
2172         rmeshstate_t m;
2173         R_Mesh_Matrix(&ent->matrix);
2174         memset(&m, 0, sizeof(m));
2175         if (ent->effects & EF_ADDITIVE)
2176                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2177         else
2178                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2179         GL_DepthMask(false);
2180         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
2181         m.tex[0] = R_GetTexture(face->texture->skin.base);
2182         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2183         colorscale = r_lightmapintensity;
2184         if (gl_combine.integer)
2185                 m.texrgbscale[0] = 2;
2186         else
2187                 colorscale *= 2.0f;
2188         for (i = 0;i < face->num_vertices;i++)
2189         {
2190                 varray_color4f[i*4+0] = face->data_color4f[i*4+0] * colorscale;
2191                 varray_color4f[i*4+1] = face->data_color4f[i*4+1] * colorscale;
2192                 varray_color4f[i*4+2] = face->data_color4f[i*4+2] * colorscale;
2193                 varray_color4f[i*4+3] = face->data_color4f[i*4+3] * ent->alpha;
2194         }
2195         m.pointer_color = varray_color4f;
2196         m.pointer_vertex = face->data_vertex3f;
2197         R_Mesh_State(&m);
2198         qglDisable(GL_CULL_FACE);
2199         GL_LockArrays(0, face->num_vertices);
2200         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2201         GL_LockArrays(0, 0);
2202         qglEnable(GL_CULL_FACE);
2203 }
2204
2205 void R_Q3BSP_DrawFace(entity_render_t *ent, q3msurface_t *face)
2206 {
2207         if (!face->num_triangles)
2208                 return;
2209         if (face->texture->surfaceflags && (face->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW)))
2210                 return;
2211         c_faces++;
2212         if ((face->texture->surfaceparms & Q3SURFACEPARM_TRANS) || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
2213         {
2214                 vec3_t facecenter, center;
2215                 facecenter[0] = (face->mins[0] + face->maxs[0]) * 0.5f;
2216                 facecenter[1] = (face->mins[1] + face->maxs[1]) * 0.5f;
2217                 facecenter[2] = (face->mins[2] + face->maxs[2]) * 0.5f;
2218                 Matrix4x4_Transform(&ent->matrix, facecenter, center);
2219                 R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : center, R_Q3BSP_DrawFace_TransparentCallback, ent, face - ent->model->brushq3.data_faces);
2220                 return;
2221         }
2222         R_Mesh_Matrix(&ent->matrix);
2223         if (r_lightmapintensity <= 0)
2224                 R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(ent, face);
2225         else if (!(ent->flags & RENDER_LIGHT))
2226         {
2227                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2228                 if (face->texture->skin.glow)
2229                         R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2230         }
2231         else if (face->lightmaptexture)
2232         {
2233                 if (gl_lightmaps.integer)
2234                         R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(ent, face);
2235                 else
2236                 {
2237                         if (r_textureunits.integer >= 2 && gl_combine.integer)
2238                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(ent, face);
2239                         else
2240                         {
2241                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2242                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(ent, face);
2243                         }
2244                         if (face->texture->skin.glow)
2245                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2246                 }
2247         }
2248         else
2249         {
2250                 if (gl_lightmaps.integer)
2251                         R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(ent, face);
2252                 else
2253                 {
2254                         R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(ent, face);
2255                         if (face->texture->skin.glow)
2256                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2257                 }
2258         }
2259         if (r_ambient.value)
2260                 R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(ent, face);
2261 }
2262
2263 void R_Q3BSP_RecursiveWorldNode(q3mnode_t *node)
2264 {
2265         int i;
2266         q3mleaf_t *leaf;
2267         for (;;)
2268         {
2269                 if (R_CullBox(node->mins, node->maxs))
2270                         return;
2271                 if (!node->plane)
2272                         break;
2273                 c_nodes++;
2274                 R_Q3BSP_RecursiveWorldNode(node->children[0]);
2275                 node = node->children[1];
2276         }
2277         leaf = (q3mleaf_t *)node;
2278         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2279         {
2280                 c_leafs++;
2281                 for (i = 0;i < leaf->numleaffaces;i++)
2282                         leaf->firstleafface[i]->visframe = r_framecount;
2283         }
2284 }
2285
2286 // FIXME: num_leafs needs to be recalculated at load time to include only
2287 // node-referenced leafs, as some maps are incorrectly compiled with leafs for
2288 // the submodels (which would render the submodels occasionally, as part of
2289 // the world - not good)
2290 void R_Q3BSP_MarkLeafPVS(void)
2291 {
2292         int i, j;
2293         q3mleaf_t *leaf;
2294         for (j = 0, leaf = cl.worldmodel->brushq3.data_leafs;j < cl.worldmodel->brushq3.num_leafs;j++, leaf++)
2295         {
2296                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2297                 {
2298                         c_leafs++;
2299                         for (i = 0;i < leaf->numleaffaces;i++)
2300                                 leaf->firstleafface[i]->visframe = r_framecount;
2301                 }
2302         }
2303 }
2304
2305 static int r_q3bsp_framecount = -1;
2306
2307 void R_Q3BSP_DrawSky(entity_render_t *ent)
2308 {
2309         int i;
2310         q3msurface_t *face;
2311         vec3_t modelorg;
2312         model_t *model;
2313         R_Mesh_Matrix(&ent->matrix);
2314         model = ent->model;
2315         if (r_drawcollisionbrushes.integer < 2)
2316         {
2317                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2318                 if (ent == &cl_entities[0].render)
2319                 {
2320                         if (r_q3bsp_framecount != r_framecount)
2321                         {
2322                                 r_q3bsp_framecount = r_framecount;
2323                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2324                                 //R_Q3BSP_MarkLeafPVS();
2325                         }
2326                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2327                                 if (face->visframe == r_framecount && (face->texture->surfaceflags & Q3SURFACEFLAG_SKY) && !R_CullBox(face->mins, face->maxs))
2328                                         R_Q3BSP_DrawSkyFace(ent, face);
2329                 }
2330                 else
2331                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2332                                 if ((face->texture->surfaceflags & Q3SURFACEFLAG_SKY))
2333                                         R_Q3BSP_DrawSkyFace(ent, face);
2334         }
2335 }
2336
2337 void R_Q3BSP_Draw(entity_render_t *ent)
2338 {
2339         int i;
2340         q3msurface_t *face;
2341         vec3_t modelorg;
2342         model_t *model;
2343         qbyte *pvs;
2344         R_Mesh_Matrix(&ent->matrix);
2345         model = ent->model;
2346         if (r_drawcollisionbrushes.integer < 2)
2347         {
2348                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2349                 if (ent == &cl_entities[0].render)
2350                 {
2351                         if (model->brush.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2352                         if (r_q3bsp_framecount != r_framecount)
2353                         {
2354                                 r_q3bsp_framecount = r_framecount;
2355                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2356                                 //R_Q3BSP_MarkLeafPVS();
2357                         }
2358                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2359                                 if (face->visframe == r_framecount && !R_CullBox(face->mins, face->maxs))
2360                                         R_Q3BSP_DrawFace(ent, face);
2361                 }
2362                 else
2363                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2364                                 R_Q3BSP_DrawFace(ent, face);
2365         }
2366         if (r_drawcollisionbrushes.integer >= 1)
2367         {
2368                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2369                 GL_DepthMask(false);
2370                 GL_DepthTest(true);
2371                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
2372                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
2373                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
2374                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
2375                 for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2376                         if (face->num_collisiontriangles)
2377                                 R_Q3BSP_DrawCollisionFace(ent, face);
2378                 qglPolygonOffset(0, 0);
2379         }
2380 }
2381
2382 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)
2383 {
2384         model_t *model = ent->model;
2385         vec3_t lightmins, lightmaxs;
2386         int t, leafindex, marksurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
2387         const int *e;
2388         const float *v[3];
2389         q3msurface_t *surface;
2390         q3mleaf_t *leaf;
2391         const qbyte *pvs;
2392         lightmins[0] = relativelightorigin[0] - lightradius;
2393         lightmins[1] = relativelightorigin[1] - lightradius;
2394         lightmins[2] = relativelightorigin[2] - lightradius;
2395         lightmaxs[0] = relativelightorigin[0] + lightradius;
2396         lightmaxs[1] = relativelightorigin[1] + lightradius;
2397         lightmaxs[2] = relativelightorigin[2] + lightradius;
2398         *outnumclusterspointer = 0;
2399         *outnumsurfacespointer = 0;
2400         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
2401         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
2402         if (model == NULL)
2403         {
2404                 VectorCopy(lightmins, outmins);
2405                 VectorCopy(lightmaxs, outmaxs);
2406                 return;
2407         }
2408         VectorCopy(relativelightorigin, outmins);
2409         VectorCopy(relativelightorigin, outmaxs);
2410         if (model->brush.GetPVS)
2411                 pvs = model->brush.GetPVS(model, relativelightorigin);
2412         else
2413                 pvs = NULL;
2414         // FIXME: use BSP recursion as lights are often small
2415         for (leafindex = 0, leaf = model->brushq3.data_leafs;leafindex < model->brushq3.num_leafs;leafindex++, leaf++)
2416         {
2417                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
2418                 {
2419                         outmins[0] = min(outmins[0], leaf->mins[0]);
2420                         outmins[1] = min(outmins[1], leaf->mins[1]);
2421                         outmins[2] = min(outmins[2], leaf->mins[2]);
2422                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
2423                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
2424                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
2425                         if (outclusterpvs)
2426                         {
2427                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
2428                                 {
2429                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
2430                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
2431                                 }
2432                         }
2433                         if (outsurfacepvs)
2434                         {
2435                                 for (marksurfaceindex = 0;marksurfaceindex < leaf->numleaffaces;marksurfaceindex++)
2436                                 {
2437                                         surface = leaf->firstleafface[marksurfaceindex];
2438                                         surfaceindex = surface - model->brushq3.data_faces;
2439                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
2440                                         {
2441                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs) && !(surface->texture->surfaceparms & Q3SURFACEPARM_TRANS) && !(surface->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW)))
2442                                                 {
2443                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
2444                                                         {
2445                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2446                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2447                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2448                                                                 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])))
2449                                                                 {
2450                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
2451                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
2452                                                                         break;
2453                                                                 }
2454                                                         }
2455                                                 }
2456                                         }
2457                                 }
2458                         }
2459                 }
2460         }
2461
2462         // limit combined leaf box to light boundaries
2463         outmins[0] = max(outmins[0], lightmins[0]);
2464         outmins[1] = max(outmins[1], lightmins[1]);
2465         outmins[2] = max(outmins[2], lightmins[2]);
2466         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
2467         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
2468         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
2469
2470         *outnumclusterspointer = outnumclusters;
2471         *outnumsurfacespointer = outnumsurfaces;
2472 }
2473
2474 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
2475 {
2476         model_t *model = ent->model;
2477         vec3_t lightmins, lightmaxs;
2478         q3msurface_t *surface;
2479         int surfacelistindex, j, t;
2480         const int *e;
2481         const float *v[3];
2482         if (r_drawcollisionbrushes.integer < 2)
2483         {
2484                 lightmins[0] = relativelightorigin[0] - lightradius;
2485                 lightmins[1] = relativelightorigin[1] - lightradius;
2486                 lightmins[2] = relativelightorigin[2] - lightradius;
2487                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2488                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2489                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2490                 R_Mesh_Matrix(&ent->matrix);
2491                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
2492                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2493                 {
2494                         surface = model->brushq3.data_faces + surfacelist[surfacelistindex];
2495                         // FIXME: check some manner of face->rendermode here?
2496                         if (!(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && surface->num_triangles && !surface->texture->skin.fog)
2497                         {
2498                                 for (j = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < surface->num_triangles;j++, t++, e += 3)
2499                                 {
2500                                         v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2501                                         v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2502                                         v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2503                                         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])))
2504                                                 shadowmarklist[numshadowmark++] = t;
2505                                 }
2506                         }
2507                 }
2508                 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);
2509         }
2510 }
2511
2512 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)
2513 {
2514         model_t *model = ent->model;
2515         vec3_t lightmins, lightmaxs, modelorg;
2516         q3msurface_t *surface;
2517         int surfacelistindex;
2518         if (r_drawcollisionbrushes.integer < 2)
2519         {
2520                 lightmins[0] = relativelightorigin[0] - lightradius;
2521                 lightmins[1] = relativelightorigin[1] - lightradius;
2522                 lightmins[2] = relativelightorigin[2] - lightradius;
2523                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2524                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2525                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2526                 R_Mesh_Matrix(&ent->matrix);
2527                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2528                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2529                 {
2530                         surface = model->brushq3.data_faces + surfacelist[surfacelistindex];
2531                         if (r_shadow_compilingrtlight)
2532                         {
2533                                 // if compiling an rtlight, capture the mesh
2534                                 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);
2535                         }
2536                         else if ((ent != &cl_entities[0].render || surface->visframe == r_framecount) && !(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && surface->num_triangles)
2537                                 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);
2538                 }
2539         }
2540 }
2541
2542 static void gl_surf_start(void)
2543 {
2544 }
2545
2546 static void gl_surf_shutdown(void)
2547 {
2548 }
2549
2550 static void gl_surf_newmap(void)
2551 {
2552 }
2553
2554 void GL_Surf_Init(void)
2555 {
2556         int i;
2557         dlightdivtable[0] = 4194304;
2558         for (i = 1;i < 32768;i++)
2559                 dlightdivtable[i] = 4194304 / (i << 7);
2560
2561         Cvar_RegisterVariable(&r_ambient);
2562         Cvar_RegisterVariable(&r_drawportals);
2563         Cvar_RegisterVariable(&r_testvis);
2564         Cvar_RegisterVariable(&r_floatbuildlightmap);
2565         Cvar_RegisterVariable(&r_detailtextures);
2566         Cvar_RegisterVariable(&r_surfaceworldnode);
2567         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
2568         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2569         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
2570         Cvar_RegisterVariable(&gl_lightmaps);
2571
2572         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2573 }
2574