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_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
  34 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
  35 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  36 cvar_t r_testvis = {0, "r_testvis", "0"};
  37 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
  38 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  39 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "1"};
  40 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "-4"};
  41
  42 static int dlightdivtable[32768];
  43
  44 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  45 {
  46         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
  47         unsigned int *bl;
  48         float dist, impact[3], local[3];
  49
  50         lit = false;
  51
  52         smax = (surf->extents[0] >> 4) + 1;
  53         tmax = (surf->extents[1] >> 4) + 1;
  54         smax3 = smax * 3;
  55
  56         for (lnum = 0; lnum < r_numdlights; lnum++)
  57         {
  58                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  59                         continue;                                       // not lit by this light
  60
  61                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
  62                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  63
  64                 // for comparisons to minimum acceptable light
  65                 // compensate for LIGHTOFFSET
  66                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  67
  68                 dist2 = dist * dist;
  69                 dist2 += LIGHTOFFSET;
  70                 if (dist2 >= maxdist)
  71                         continue;
  72
  73                 if (surf->plane->type < 3)
  74                 {
  75                         VectorCopy(local, impact);
  76                         impact[surf->plane->type] -= dist;
  77                 }
  78                 else
  79                 {
  80                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  81                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  82                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  83                 }
  84
  85                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  86                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  87
  88                 s = bound(0, impacts, smax * 16) - impacts;
  89                 t = bound(0, impactt, tmax * 16) - impactt;
  90                 i = s * s + t * t + dist2;
  91                 if (i > maxdist)
  92                         continue;
  93
  94                 // reduce calculations
  95                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
  96                         sdtable[s] = i * i + dist2;
  97
  98                 maxdist3 = maxdist - dist2;
  99
 100                 // convert to 8.8 blocklights format
 101                 red = r_dlight[lnum].light[0] * (1.0f / 128.0f);
 102                 green = r_dlight[lnum].light[1] * (1.0f / 128.0f);
 103                 blue = r_dlight[lnum].light[2] * (1.0f / 128.0f);
 104                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 105                 bl = intblocklights;
 106
 107                 i = impactt;
 108                 for (t = 0;t < tmax;t++, i -= 16)
 109                 {
 110                         td = i * i;
 111                         // make sure some part of it is visible on this line
 112                         if (td < maxdist3)
 113                         {
 114                                 maxdist2 = maxdist - td;
 115                                 for (s = 0;s < smax;s++)
 116                                 {
 117                                         if (sdtable[s] < maxdist2)
 118                                         {
 119                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 120                                                 if (k > 0)
 121                                                 {
 122                                                         bl[0] += (red   * k);
 123                                                         bl[1] += (green * k);
 124                                                         bl[2] += (blue  * k);
 125                                                         lit = true;
 126                                                 }
 127                                         }
 128                                         bl += 3;
 129                                 }
 130                         }
 131                         else // skip line
 132                                 bl += smax3;
 133                 }
 134         }
 135         return lit;
 136 }
 137
 138 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 139 {
 140         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 141         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 142
 143         lit = false;
 144
 145         smax = (surf->extents[0] >> 4) + 1;
 146         tmax = (surf->extents[1] >> 4) + 1;
 147         smax3 = smax * 3;
 148
 149         for (lnum = 0; lnum < r_numdlights; lnum++)
 150         {
 151                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 152                         continue;                                       // not lit by this light
 153
 154                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
 155                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 156
 157                 // for comparisons to minimum acceptable light
 158                 // compensate for LIGHTOFFSET
 159                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 160
 161                 dist2 = dist * dist;
 162                 dist2 += LIGHTOFFSET;
 163                 if (dist2 >= maxdist)
 164                         continue;
 165
 166                 if (surf->plane->type < 3)
 167                 {
 168                         VectorCopy(local, impact);
 169                         impact[surf->plane->type] -= dist;
 170                 }
 171                 else
 172                 {
 173                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 174                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 175                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 176                 }
 177
 178                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 179                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 180
 181                 td = bound(0, impacts, smax * 16) - impacts;
 182                 td1 = bound(0, impactt, tmax * 16) - impactt;
 183                 td = td * td + td1 * td1 + dist2;
 184                 if (td > maxdist)
 185                         continue;
 186
 187                 // reduce calculations
 188                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 189                         sdtable[s] = td1 * td1 + dist2;
 190
 191                 maxdist3 = maxdist - dist2;
 192
 193                 // convert to 8.8 blocklights format
 194                 red = r_dlight[lnum].light[0];
 195                 green = r_dlight[lnum].light[1];
 196                 blue = r_dlight[lnum].light[2];
 197                 subtract = r_dlight[lnum].subtract * 32768.0f;
 198                 bl = floatblocklights;
 199
 200                 td1 = impactt;
 201                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 202                 {
 203                         td = td1 * td1;
 204                         // make sure some part of it is visible on this line
 205                         if (td < maxdist3)
 206                         {
 207                                 maxdist2 = maxdist - td;
 208                                 for (s = 0;s < smax;s++)
 209                                 {
 210                                         if (sdtable[s] < maxdist2)
 211                                         {
 212                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 213                                                 bl[0] += red   * k;
 214                                                 bl[1] += green * k;
 215                                                 bl[2] += blue  * k;
 216                                                 lit = true;
 217                                         }
 218                                         bl += 3;
 219                                 }
 220                         }
 221                         else // skip line
 222                                 bl += smax3;
 223                 }
 224         }
 225         return lit;
 226 }
 227
 228 /*
 229 ===============
 230 R_BuildLightMap
 231
 232 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 233 ===============
 234 */
 235 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf)
 236 {
 237         if (!r_floatbuildlightmap.integer)
 238         {
 239                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 240                 unsigned int *bl, scale;
 241                 qbyte *lightmap, *out, *stain;
 242
 243                 // update cached lighting info
 244                 surf->cached_dlight = 0;
 245
 246                 smax = (surf->extents[0]>>4)+1;
 247                 tmax = (surf->extents[1]>>4)+1;
 248                 size = smax*tmax;
 249                 size3 = size*3;
 250                 lightmap = surf->samples;
 251
 252         // set to full bright if no light data
 253                 bl = intblocklights;
 254                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 255                 {
 256                         for (i = 0;i < size3;i++)
 257                                 bl[i] = 255*256;
 258                 }
 259                 else
 260                 {
 261         // clear to no light
 262                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 263                         if (j)
 264                         {
 265                                 for (i = 0;i < size3;i++)
 266                                         *bl++ = j;
 267                         }
 268                         else
 269                                 memset(bl, 0, size*3*sizeof(unsigned int));
 270
 271                         if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 272                         {
 273                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 274                                 if (surf->cached_dlight)
 275                                         c_light_polys++;
 276                         }
 277
 278         // add all the lightmaps
 279                         if (lightmap)
 280                         {
 281                                 bl = intblocklights;
 282                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 283                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 284                                                 bl[i] += lightmap[i] * scale;
 285                         }
 286                 }
 287
 288                 stain = surf->stainsamples;
 289                 bl = intblocklights;
 290                 out = templight;
 291                 // deal with lightmap brightness scale
 292                 shift = 7 + r_lightmapscalebit + 8;
 293                 if (ent->model->brushq1.lightmaprgba)
 294                 {
 295                         stride = (surf->lightmaptexturestride - smax) * 4;
 296                         for (i = 0;i < tmax;i++, out += stride)
 297                         {
 298                                 for (j = 0;j < smax;j++)
 299                                 {
 300                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 301                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 302                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 303                                         *out++ = 255;
 304                                 }
 305                         }
 306                 }
 307                 else
 308                 {
 309                         stride = (surf->lightmaptexturestride - smax) * 3;
 310                         for (i = 0;i < tmax;i++, out += stride)
 311                         {
 312                                 for (j = 0;j < smax;j++)
 313                                 {
 314                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 315                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 316                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 317                                 }
 318                         }
 319                 }
 320
 321                 R_UpdateTexture(surf->lightmaptexture, templight);
 322         }
 323         else
 324         {
 325                 int smax, tmax, i, j, size, size3, maps, stride, l;
 326                 float *bl, scale;
 327                 qbyte *lightmap, *out, *stain;
 328
 329                 // update cached lighting info
 330                 surf->cached_dlight = 0;
 331
 332                 smax = (surf->extents[0]>>4)+1;
 333                 tmax = (surf->extents[1]>>4)+1;
 334                 size = smax*tmax;
 335                 size3 = size*3;
 336                 lightmap = surf->samples;
 337
 338         // set to full bright if no light data
 339                 bl = floatblocklights;
 340                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 341                         j = 255*256;
 342                 else
 343                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 344
 345                 // clear to no light
 346                 if (j)
 347                 {
 348                         for (i = 0;i < size3;i++)
 349                                 *bl++ = j;
 350                 }
 351                 else
 352                         memset(bl, 0, size*3*sizeof(float));
 353
 354                 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 355                 {
 356                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 357                         if (surf->cached_dlight)
 358                                 c_light_polys++;
 359                 }
 360
 361                 // add all the lightmaps
 362                 if (lightmap)
 363                 {
 364                         bl = floatblocklights;
 365                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 366                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 367                                         bl[i] += lightmap[i] * scale;
 368                 }
 369
 370                 stain = surf->stainsamples;
 371                 bl = floatblocklights;
 372                 out = templight;
 373                 // deal with lightmap brightness scale
 374                 scale = 1.0f / (1 << (7 + r_lightmapscalebit + 8));
 375                 if (ent->model->brushq1.lightmaprgba)
 376                 {
 377                         stride = (surf->lightmaptexturestride - smax) * 4;
 378                         for (i = 0;i < tmax;i++, out += stride)
 379                         {
 380                                 for (j = 0;j < smax;j++)
 381                                 {
 382                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 383                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 384                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 385                                         *out++ = 255;
 386                                 }
 387                         }
 388                 }
 389                 else
 390                 {
 391                         stride = (surf->lightmaptexturestride - smax) * 3;
 392                         for (i = 0;i < tmax;i++, out += stride)
 393                         {
 394                                 for (j = 0;j < smax;j++)
 395                                 {
 396                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 397                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 398                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 399                                 }
 400                         }
 401                 }
 402
 403                 R_UpdateTexture(surf->lightmaptexture, templight);
 404         }
 405 }
 406
 407 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 408 {
 409         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 410         msurface_t *surf, *endsurf;
 411         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 412         qbyte *bl;
 413         vec3_t impact;
 414
 415         maxdist = radius * radius;
 416         invradius = 1.0f / radius;
 417
 418 loc0:
 419         if (node->contents < 0)
 420                 return;
 421         ndist = PlaneDiff(origin, node->plane);
 422         if (ndist > radius)
 423         {
 424                 node = node->children[0];
 425                 goto loc0;
 426         }
 427         if (ndist < -radius)
 428         {
 429                 node = node->children[1];
 430                 goto loc0;
 431         }
 432
 433         dist2 = ndist * ndist;
 434         maxdist3 = maxdist - dist2;
 435
 436         if (node->plane->type < 3)
 437         {
 438                 VectorCopy(origin, impact);
 439                 impact[node->plane->type] -= ndist;
 440         }
 441         else
 442         {
 443                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 444                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 445                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 446         }
 447
 448         for (surf = model->brushq1.surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 449         {
 450                 if (surf->stainsamples)
 451                 {
 452                         smax = (surf->extents[0] >> 4) + 1;
 453                         tmax = (surf->extents[1] >> 4) + 1;
 454
 455                         impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 456                         impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 457
 458                         s = bound(0, impacts, smax * 16) - impacts;
 459                         t = bound(0, impactt, tmax * 16) - impactt;
 460                         i = s * s + t * t + dist2;
 461                         if (i > maxdist)
 462                                 continue;
 463
 464                         // reduce calculations
 465                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 466                                 sdtable[s] = i * i + dist2;
 467
 468                         bl = surf->stainsamples;
 469                         smax3 = smax * 3;
 470                         stained = false;
 471
 472                         i = impactt;
 473                         for (t = 0;t < tmax;t++, i -= 16)
 474                         {
 475                                 td = i * i;
 476                                 // make sure some part of it is visible on this line
 477                                 if (td < maxdist3)
 478                                 {
 479                                         maxdist2 = maxdist - td;
 480                                         for (s = 0;s < smax;s++)
 481                                         {
 482                                                 if (sdtable[s] < maxdist2)
 483                                                 {
 484                                                         ratio = lhrandom(0.0f, 1.0f);
 485                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 486                                                         if (a >= (1.0f / 64.0f))
 487                                                         {
 488                                                                 if (a > 1)
 489                                                                         a = 1;
 490                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 491                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 492                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 493                                                                 stained = true;
 494                                                         }
 495                                                 }
 496                                                 bl += 3;
 497                                         }
 498                                 }
 499                                 else // skip line
 500                                         bl += smax3;
 501                         }
 502                         // force lightmap upload
 503                         if (stained)
 504                                 surf->cached_dlight = true;
 505                 }
 506         }
 507
 508         if (node->children[0]->contents >= 0)
 509         {
 510                 if (node->children[1]->contents >= 0)
 511                 {
 512                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 513                         node = node->children[1];
 514                         goto loc0;
 515                 }
 516                 else
 517                 {
 518                         node = node->children[0];
 519                         goto loc0;
 520                 }
 521         }
 522         else if (node->children[1]->contents >= 0)
 523         {
 524                 node = node->children[1];
 525                 goto loc0;
 526         }
 527 }
 528
 529 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)
 530 {
 531         int n;
 532         float fcolor[8];
 533         entity_render_t *ent;
 534         model_t *model;
 535         vec3_t org;
 536         if (cl.worldmodel == NULL || !cl.worldmodel->brushq1.nodes)
 537                 return;
 538         fcolor[0] = cr1;
 539         fcolor[1] = cg1;
 540         fcolor[2] = cb1;
 541         fcolor[3] = ca1 * (1.0f / 64.0f);
 542         fcolor[4] = cr2 - cr1;
 543         fcolor[5] = cg2 - cg1;
 544         fcolor[6] = cb2 - cb1;
 545         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 546
 547         R_StainNode(cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, cl.worldmodel, origin, radius, fcolor);
 548
 549         // look for embedded bmodels
 550         for (n = 0;n < cl_num_brushmodel_entities;n++)
 551         {
 552                 ent = cl_brushmodel_entities[n];
 553                 model = ent->model;
 554                 if (model && model->name[0] == '*')
 555                 {
 556                         Mod_CheckLoaded(model);
 557                         if (model->brushq1.nodes)
 558                         {
 559                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 560                                 R_StainNode(model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 561                         }
 562                 }
 563         }
 564 }
 565
 566
 567 /*
 568 =============================================================
 569
 570         BRUSH MODELS
 571
 572 =============================================================
 573 */
 574
 575 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 576 {
 577         int i;
 578         float scale;
 579         const qbyte *lm;
 580         if (styles[0] != 255)
 581         {
 582                 for (i = 0;i < numverts;i++, c += 4)
 583                 {
 584                         lm = samples + lightmapoffsets[i];
 585                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 586                         VectorMA(c, scale, lm, c);
 587                         if (styles[1] != 255)
 588                         {
 589                                 lm += size3;
 590                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 591                                 VectorMA(c, scale, lm, c);
 592                                 if (styles[2] != 255)
 593                                 {
 594                                         lm += size3;
 595                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 596                                         VectorMA(c, scale, lm, c);
 597                                         if (styles[3] != 255)
 598                                         {
 599                                                 lm += size3;
 600                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 601                                                 VectorMA(c, scale, lm, c);
 602                                         }
 603                                 }
 604                         }
 605                 }
 606         }
 607 }
 608
 609 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 610 {
 611         int i;
 612         float diff[3], f;
 613         if (fogenabled)
 614         {
 615                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 616                 {
 617                         VectorSubtract(v, modelorg, diff);
 618                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 619                         VectorScale(c, f, c);
 620                 }
 621         }
 622         else if (colorscale != 1)
 623                 for (i = 0;i < numverts;i++, c += 4)
 624                         VectorScale(c, colorscale, c);
 625 }
 626
 627 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)
 628 {
 629         int i;
 630         float diff[3], f;
 631         r *= colorscale;
 632         g *= colorscale;
 633         b *= colorscale;
 634         if (fogenabled)
 635         {
 636                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 637                 {
 638                         VectorSubtract(v, modelorg, diff);
 639                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 640                         c[0] = r * f;
 641                         c[1] = g * f;
 642                         c[2] = b * f;
 643                         c[3] = a;
 644                 }
 645         }
 646         else
 647         {
 648                 for (i = 0;i < numverts;i++, c += 4)
 649                 {
 650                         c[0] = r;
 651                         c[1] = g;
 652                         c[2] = b;
 653                         c[3] = a;
 654                 }
 655         }
 656 }
 657
 658 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)
 659 {
 660         int i;
 661         float diff[3], f;
 662         r *= colorscale;
 663         g *= colorscale;
 664         b *= colorscale;
 665         for (i = 0;i < numverts;i++, v += 3, c += 4)
 666         {
 667                 VectorSubtract(v, modelorg, diff);
 668                 f = exp(fogdensity/DotProduct(diff, diff));
 669                 c[0] = r;
 670                 c[1] = g;
 671                 c[2] = b;
 672                 c[3] = a * f;
 673         }
 674 }
 675
 676 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
 677 {
 678         float f;
 679         const float *v;
 680         float *c;
 681         int i, l, lit = false;
 682         const rdlight_t *rd;
 683         vec3_t lightorigin;
 684         for (l = 0;l < r_numdlights;l++)
 685         {
 686                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 687                 {
 688                         rd = &r_dlight[l];
 689                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 690                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
 691                         {
 692                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 693                                 if (f < rd->cullradius2)
 694                                 {
 695                                         f = ((1.0f / f) - rd->subtract) * scale;
 696                                         VectorMA(c, f, rd->light, c);
 697                                         lit = true;
 698                                 }
 699                         }
 700                 }
 701         }
 702         return lit;
 703 }
 704
 705 // note: this untransforms lights to do the checking
 706 static int RSurf_LightCheck(const matrix4x4_t *matrix, const int *dlightbits, const surfmesh_t *mesh)
 707 {
 708         int i, l;
 709         const rdlight_t *rd;
 710         vec3_t lightorigin;
 711         const float *v;
 712         for (l = 0;l < r_numdlights;l++)
 713         {
 714                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 715                 {
 716                         rd = &r_dlight[l];
 717                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 718                         for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
 719                                 if (VectorDistance2(v, lightorigin) < rd->cullradius2)
 720                                         return true;
 721                 }
 722         }
 723         return false;
 724 }
 725
 726 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 727 {
 728         const msurface_t *surf;
 729         const surfmesh_t *mesh;
 730         rmeshstate_t m;
 731
 732         // LordHavoc: HalfLife maps have freaky skypolys...
 733         if (ent->model->brush.ishlbsp)
 734                 return;
 735
 736         if (skyrendernow)
 737         {
 738                 skyrendernow = false;
 739                 if (skyrendermasked)
 740                         R_Sky();
 741         }
 742
 743         R_Mesh_Matrix(&ent->matrix);
 744
 745         GL_Color(fogcolor[0] * r_colorscale, fogcolor[1] * r_colorscale, fogcolor[2] * r_colorscale, 1);
 746         if (skyrendermasked)
 747         {
 748                 // depth-only (masking)
 749                 qglColorMask(0,0,0,0);
 750                 // just to make sure that braindead drivers don't draw anything
 751                 // despite that colormask...
 752                 GL_BlendFunc(GL_ZERO, GL_ONE);
 753         }
 754         else
 755         {
 756                 // fog sky
 757                 GL_BlendFunc(GL_ONE, GL_ZERO);
 758         }
 759         GL_DepthMask(true);
 760         GL_DepthTest(true);
 761
 762         memset(&m, 0, sizeof(m));
 763         R_Mesh_State_Texture(&m);
 764
 765         while((surf = *surfchain++) != NULL)
 766         {
 767                 if (surf->visframe == r_framecount)
 768                 {
 769                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 770                         {
 771                                 GL_VertexPointer(mesh->vertex3f);
 772                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 773                         }
 774                 }
 775         }
 776         qglColorMask(1,1,1,1);
 777 }
 778
 779 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 780 {
 781         const entity_render_t *ent = calldata1;
 782         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 783         float f, colorscale;
 784         const surfmesh_t *mesh;
 785         rmeshstate_t m;
 786         float alpha;
 787         float modelorg[3];
 788         texture_t *texture;
 789         matrix4x4_t tempmatrix;
 790
 791         if (r_waterscroll.value)
 792         {
 793                 // scrolling in texture matrix
 794                 Matrix4x4_CreateTranslate(&tempmatrix, sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 795                 R_Mesh_TextureMatrix(0, &tempmatrix);
 796         }
 797
 798         R_Mesh_Matrix(&ent->matrix);
 799         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 800
 801         memset(&m, 0, sizeof(m));
 802         texture = surf->texinfo->texture->currentframe;
 803         alpha = texture->currentalpha;
 804         if (texture->rendertype == SURFRENDER_ADD)
 805         {
 806                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 807                 GL_DepthMask(false);
 808         }
 809         else if (texture->rendertype == SURFRENDER_ALPHA)
 810         {
 811                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 812                 GL_DepthMask(false);
 813         }
 814         else
 815         {
 816                 GL_BlendFunc(GL_ONE, GL_ZERO);
 817                 GL_DepthMask(true);
 818         }
 819         m.tex[0] = R_GetTexture(texture->skin.base);
 820         colorscale = r_colorscale;
 821         if (gl_combine.integer)
 822         {
 823                 m.texrgbscale[0] = 4;
 824                 colorscale *= 0.25f;
 825         }
 826         GL_DepthTest(true);
 827         GL_ColorPointer(varray_color4f);
 828         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 829         {
 830                 GL_VertexPointer(mesh->vertex3f);
 831                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
 832                 R_Mesh_State_Texture(&m);
 833                 f = surf->flags & SURF_DRAWFULLBRIGHT ? 1.0f : ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f);
 834                 R_FillColors(varray_color4f, mesh->numverts, f, f, f, alpha);
 835                 if (!(surf->flags & SURF_DRAWFULLBRIGHT || ent->effects & EF_FULLBRIGHT))
 836                 {
 837                         if (surf->dlightframe == r_framecount)
 838                                 RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, mesh->numverts, mesh->vertex3f, varray_color4f, 1);
 839                         if (surf->flags & SURF_LIGHTMAP)
 840                                 RSurf_AddLightmapToVertexColors_Color4f(mesh->lightmapoffsets, varray_color4f, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 841                 }
 842                 RSurf_FogColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, colorscale, mesh->numverts, modelorg);
 843                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 844         }
 845
 846         if (fogenabled)
 847         {
 848                 memset(&m, 0, sizeof(m));
 849                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 850                 GL_DepthMask(false);
 851                 GL_DepthTest(true);
 852                 m.tex[0] = R_GetTexture(texture->skin.fog);
 853                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 854                 {
 855                         GL_VertexPointer(mesh->vertex3f);
 856                         m.pointer_texcoord[0] = mesh->texcoordtexture2f;
 857                         GL_ColorPointer(varray_color4f);
 858                         R_Mesh_State_Texture(&m);
 859                         RSurf_FogPassColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], alpha, r_colorscale, mesh->numverts, modelorg);
 860                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 861                 }
 862         }
 863
 864         if (r_waterscroll.value)
 865         {
 866                 Matrix4x4_CreateIdentity(&tempmatrix);
 867                 R_Mesh_TextureMatrix(0, &tempmatrix);
 868         }
 869 }
 870
 871 static void RSurfShader_Water(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 872 {
 873         const msurface_t *surf;
 874         msurface_t **chain;
 875         vec3_t center;
 876         if (texture->rendertype != SURFRENDER_OPAQUE)
 877         {
 878                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 879                 {
 880                         if (surf->visframe == r_framecount)
 881                         {
 882                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 883                                 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->brushq1.surfaces);
 884                         }
 885                 }
 886         }
 887         else
 888                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 889                         if (surf->visframe == r_framecount)
 890                                 RSurfShader_Water_Callback(ent, surf - ent->model->brushq1.surfaces);
 891 }
 892
 893 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 894 {
 895         float base, colorscale;
 896         const surfmesh_t *mesh;
 897         rmeshstate_t m;
 898         float modelorg[3];
 899         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 900         memset(&m, 0, sizeof(m));
 901         if (rendertype == SURFRENDER_ADD)
 902         {
 903                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 904                 GL_DepthMask(false);
 905         }
 906         else if (rendertype == SURFRENDER_ALPHA)
 907         {
 908                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 909                 GL_DepthMask(false);
 910         }
 911         else
 912         {
 913                 GL_BlendFunc(GL_ONE, GL_ZERO);
 914                 GL_DepthMask(true);
 915         }
 916         m.tex[0] = R_GetTexture(texture->skin.base);
 917         colorscale = r_colorscale;
 918         if (gl_combine.integer)
 919         {
 920                 m.texrgbscale[0] = 4;
 921                 colorscale *= 0.25f;
 922         }
 923         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 924         GL_DepthTest(true);
 925         GL_ColorPointer(varray_color4f);
 926         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 927         {
 928                 GL_VertexPointer(mesh->vertex3f);
 929                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
 930                 R_Mesh_State_Texture(&m);
 931                 R_FillColors(varray_color4f, mesh->numverts, base, base, base, currentalpha);
 932                 if (!(ent->effects & EF_FULLBRIGHT))
 933                 {
 934                         if (surf->dlightframe == r_framecount)
 935                                 RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, mesh->numverts, mesh->vertex3f, varray_color4f, 1);
 936                         if (surf->flags & SURF_LIGHTMAP)
 937                                 RSurf_AddLightmapToVertexColors_Color4f(mesh->lightmapoffsets, varray_color4f, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 938                 }
 939                 RSurf_FogColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, colorscale, mesh->numverts, modelorg);
 940                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 941         }
 942 }
 943
 944 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 945 {
 946         const surfmesh_t *mesh;
 947         rmeshstate_t m;
 948         float modelorg[3];
 949         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 950         memset(&m, 0, sizeof(m));
 951         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 952         GL_DepthMask(false);
 953         GL_DepthTest(true);
 954         m.tex[0] = R_GetTexture(texture->skin.glow);
 955         GL_ColorPointer(varray_color4f);
 956         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 957         {
 958                 GL_VertexPointer(mesh->vertex3f);
 959                 if (m.tex[0])
 960                         m.pointer_texcoord[0] = mesh->texcoordtexture2f;
 961                 R_Mesh_State_Texture(&m);
 962                 RSurf_FoggedColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, 1, 1, 1, currentalpha, r_colorscale, mesh->numverts, modelorg);
 963                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 964         }
 965 }
 966
 967 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 968 {
 969         const surfmesh_t *mesh;
 970         rmeshstate_t m;
 971         float modelorg[3];
 972         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 973         memset(&m, 0, sizeof(m));
 974         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 975         GL_DepthMask(false);
 976         GL_DepthTest(true);
 977         m.tex[0] = R_GetTexture(texture->skin.fog);
 978         GL_ColorPointer(varray_color4f);
 979         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 980         {
 981                 GL_VertexPointer(mesh->vertex3f);
 982                 if (m.tex[0])
 983                         m.pointer_texcoord[0] = mesh->texcoordtexture2f;
 984                 R_Mesh_State_Texture(&m);
 985                 RSurf_FogPassColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, r_colorscale, mesh->numverts, modelorg);
 986                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
 987         }
 988 }
 989
 990 static void RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 991 {
 992         const msurface_t *surf;
 993         const surfmesh_t *mesh;
 994         rmeshstate_t m;
 995         int lightmaptexturenum;
 996         float cl;
 997         memset(&m, 0, sizeof(m));
 998         GL_BlendFunc(GL_ONE, GL_ZERO);
 999         GL_DepthMask(true);
1000         GL_DepthTest(true);
1001         m.tex[0] = R_GetTexture(texture->skin.base);
1002         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1003         m.tex[2] = R_GetTexture(texture->skin.detail);
1004         m.texrgbscale[0] = 1;
1005         m.texrgbscale[1] = 4;
1006         m.texrgbscale[2] = 2;
1007         cl = (float) (1 << r_lightmapscalebit) * r_colorscale;
1008         GL_Color(cl, cl, cl, 1);
1009
1010         while((surf = *surfchain++) != NULL)
1011         {
1012                 if (surf->visframe == r_framecount)
1013                 {
1014                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1015                         //if (m.tex[1] != lightmaptexturenum)
1016                         //{
1017                                 m.tex[1] = lightmaptexturenum;
1018                         //      R_Mesh_State_Texture(&m);
1019                         //}
1020                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1021                         {
1022                                 GL_VertexPointer(mesh->vertex3f);
1023                                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1024                                 m.pointer_texcoord[1] = mesh->texcoordlightmap2f;
1025                                 m.pointer_texcoord[2] = mesh->texcoorddetail2f;
1026                                 R_Mesh_State_Texture(&m);
1027                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1028                         }
1029                 }
1030         }
1031 }
1032
1033 static void RSurfShader_OpaqueWall_Pass_BaseDoubleTex(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1034 {
1035         const msurface_t *surf;
1036         const surfmesh_t *mesh;
1037         rmeshstate_t m;
1038         int lightmaptexturenum;
1039         memset(&m, 0, sizeof(m));
1040         GL_BlendFunc(GL_ONE, GL_ZERO);
1041         GL_DepthMask(true);
1042         GL_DepthTest(true);
1043         m.tex[0] = R_GetTexture(texture->skin.base);
1044         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1045         if (gl_combine.integer)
1046                 m.texrgbscale[1] = 4;
1047         GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1048         while((surf = *surfchain++) != NULL)
1049         {
1050                 if (surf->visframe == r_framecount)
1051                 {
1052                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1053                         //if (m.tex[1] != lightmaptexturenum)
1054                         //{
1055                                 m.tex[1] = lightmaptexturenum;
1056                         //      R_Mesh_State_Texture(&m);
1057                         //}
1058                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1059                         {
1060                                 GL_VertexPointer(mesh->vertex3f);
1061                                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1062                                 m.pointer_texcoord[1] = mesh->texcoordlightmap2f;
1063                                 R_Mesh_State_Texture(&m);
1064                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1065                         }
1066                 }
1067         }
1068 }
1069
1070 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1071 {
1072         const msurface_t *surf;
1073         const surfmesh_t *mesh;
1074         rmeshstate_t m;
1075         memset(&m, 0, sizeof(m));
1076         GL_DepthMask(true);
1077         GL_DepthTest(true);
1078         GL_BlendFunc(GL_ONE, GL_ZERO);
1079         m.tex[0] = R_GetTexture(texture->skin.base);
1080         GL_Color(1, 1, 1, 1);
1081         while((surf = *surfchain++) != NULL)
1082         {
1083                 if (surf->visframe == r_framecount)
1084                 {
1085                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1086                         {
1087                                 GL_VertexPointer(mesh->vertex3f);
1088                                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1089                                 R_Mesh_State_Texture(&m);
1090                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1091                         }
1092                 }
1093         }
1094 }
1095
1096 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1097 {
1098         const msurface_t *surf;
1099         const surfmesh_t *mesh;
1100         rmeshstate_t m;
1101         int lightmaptexturenum;
1102         memset(&m, 0, sizeof(m));
1103         GL_BlendFunc(GL_ZERO, GL_SRC_COLOR);
1104         GL_DepthMask(false);
1105         GL_DepthTest(true);
1106         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1107         if (gl_combine.integer)
1108                 m.texrgbscale[0] = 4;
1109         GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1110         while((surf = *surfchain++) != NULL)
1111         {
1112                 if (surf->visframe == r_framecount)
1113                 {
1114                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1115                         //if (m.tex[0] != lightmaptexturenum)
1116                         //{
1117                                 m.tex[0] = lightmaptexturenum;
1118                         //      R_Mesh_State_Texture(&m);
1119                         //}
1120                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1121                         {
1122                                 GL_VertexPointer(mesh->vertex3f);
1123                                 m.pointer_texcoord[0] = mesh->texcoordlightmap2f;
1124                                 R_Mesh_State_Texture(&m);
1125                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1126                         }
1127                 }
1128         }
1129 }
1130
1131 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1132 {
1133         const msurface_t *surf;
1134         const surfmesh_t *mesh;
1135         float colorscale;
1136         rmeshstate_t m;
1137
1138         memset(&m, 0, sizeof(m));
1139         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1140         GL_DepthMask(false);
1141         GL_DepthTest(true);
1142         m.tex[0] = R_GetTexture(texture->skin.base);
1143         colorscale = r_colorscale;
1144         if (gl_combine.integer)
1145         {
1146                 m.texrgbscale[0] = 4;
1147                 colorscale *= 0.25f;
1148         }
1149         GL_ColorPointer(varray_color4f);
1150         while((surf = *surfchain++) != NULL)
1151         {
1152                 if (surf->visframe == r_framecount && surf->dlightframe == r_framecount)
1153                 {
1154                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1155                         {
1156                                 if (RSurf_LightCheck(&ent->inversematrix, surf->dlightbits, mesh))
1157                                 {
1158                                         GL_VertexPointer(mesh->vertex3f);
1159                                         m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1160                                         R_FillColors(varray_color4f, mesh->numverts, 0, 0, 0, 1);
1161                                         R_Mesh_State_Texture(&m);
1162                                         RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, mesh->numverts, mesh->vertex3f, varray_color4f, colorscale);
1163                                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1164                                 }
1165                         }
1166                 }
1167         }
1168 }
1169
1170 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1171 {
1172         const msurface_t *surf;
1173         const surfmesh_t *mesh;
1174         rmeshstate_t m;
1175         float modelorg[3];
1176         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1177         memset(&m, 0, sizeof(m));
1178         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1179         GL_DepthMask(false);
1180         GL_DepthTest(true);
1181         GL_ColorPointer(varray_color4f);
1182         while((surf = *surfchain++) != NULL)
1183         {
1184                 if (surf->visframe == r_framecount)
1185                 {
1186                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1187                         {
1188                                 GL_VertexPointer(mesh->vertex3f);
1189                                 if (m.tex[0])
1190                                         m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1191                                 R_Mesh_State_Texture(&m);
1192                                 RSurf_FogPassColors_Vertex3f_Color4f(mesh->vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, r_colorscale, mesh->numverts, modelorg);
1193                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1194                         }
1195                 }
1196         }
1197 }
1198
1199 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1200 {
1201         const msurface_t *surf;
1202         const surfmesh_t *mesh;
1203         rmeshstate_t m;
1204         memset(&m, 0, sizeof(m));
1205         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1206         GL_DepthMask(false);
1207         GL_DepthTest(true);
1208         m.tex[0] = R_GetTexture(texture->skin.detail);
1209         GL_Color(1, 1, 1, 1);
1210         while((surf = *surfchain++) != NULL)
1211         {
1212                 if (surf->visframe == r_framecount)
1213                 {
1214                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1215                         {
1216                                 GL_VertexPointer(mesh->vertex3f);
1217                                 m.pointer_texcoord[0] = mesh->texcoorddetail2f;
1218                                 R_Mesh_State_Texture(&m);
1219                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1220                         }
1221                 }
1222         }
1223 }
1224
1225 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1226 {
1227         const msurface_t *surf;
1228         const surfmesh_t *mesh;
1229         rmeshstate_t m;
1230         memset(&m, 0, sizeof(m));
1231         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1232         GL_DepthMask(false);
1233         GL_DepthTest(true);
1234         m.tex[0] = R_GetTexture(texture->skin.glow);
1235         GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1236         while((surf = *surfchain++) != NULL)
1237         {
1238                 if (surf->visframe == r_framecount)
1239                 {
1240                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1241                         {
1242                                 GL_VertexPointer(mesh->vertex3f);
1243                                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1244                                 R_Mesh_State_Texture(&m);
1245                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1246                         }
1247                 }
1248         }
1249 }
1250
1251 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1252 {
1253         const msurface_t *surf;
1254         const surfmesh_t *mesh;
1255         rmeshstate_t m;
1256         memset(&m, 0, sizeof(m));
1257         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1258         GL_DepthMask(true);
1259         m.tex[0] = R_GetTexture(texture->skin.glow);
1260         if (m.tex[0])
1261                 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1262         else
1263                 GL_Color(0, 0, 0, 1);
1264         while((surf = *surfchain++) != NULL)
1265         {
1266                 if (surf->visframe == r_framecount)
1267                 {
1268                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1269                         {
1270                                 GL_VertexPointer(mesh->vertex3f);
1271                                 m.pointer_texcoord[0] = mesh->texcoordtexture2f;
1272                                 R_Mesh_State_Texture(&m);
1273                                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
1274                         }
1275                 }
1276         }
1277 }
1278
1279 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1280 {
1281         const entity_render_t *ent = calldata1;
1282         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
1283         int rendertype;
1284         float currentalpha;
1285         texture_t *texture;
1286         R_Mesh_Matrix(&ent->matrix);
1287
1288         texture = surf->texinfo->texture;
1289         if (texture->animated)
1290                 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];
1291
1292         currentalpha = ent->alpha;
1293         if (texture->flags & SURF_WATERALPHA)
1294                 currentalpha *= r_wateralpha.value;
1295         if (ent->effects & EF_ADDITIVE)
1296                 rendertype = SURFRENDER_ADD;
1297         else if (currentalpha < 1 || texture->skin.fog != NULL)
1298                 rendertype = SURFRENDER_ALPHA;
1299         else
1300                 rendertype = SURFRENDER_OPAQUE;
1301
1302         RSurfShader_Wall_Pass_BaseVertex(ent, surf, texture, rendertype, currentalpha);
1303         if (texture->skin.glow)
1304                 RSurfShader_Wall_Pass_Glow(ent, surf, texture, rendertype, currentalpha);
1305         if (fogenabled)
1306                 RSurfShader_Wall_Pass_Fog(ent, surf, texture, rendertype, currentalpha);
1307 }
1308
1309 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1310 {
1311         const msurface_t *surf;
1312         msurface_t **chain;
1313         vec3_t center;
1314         if (texture->rendertype != SURFRENDER_OPAQUE)
1315         {
1316                 // transparent vertex shaded from lightmap
1317                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1318                 {
1319                         if (surf->visframe == r_framecount)
1320                         {
1321                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1322                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->brushq1.surfaces);
1323                         }
1324                 }
1325         }
1326         else if (r_shadow_realtime_world.integer)
1327         {
1328                 // opaque base lighting
1329                 RSurfShader_OpaqueWall_Pass_OpaqueGlow(ent, texture, surfchain);
1330                 if (fogenabled)
1331                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1332         }
1333         else if (r_vertexsurfaces.integer)
1334         {
1335                 // opaque vertex shaded from lightmap
1336                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1337                         if (surf->visframe == r_framecount)
1338                                 RSurfShader_Wall_Pass_BaseVertex(ent, surf, texture, texture->rendertype, texture->currentalpha);
1339                 if (texture->skin.glow)
1340                         for (chain = surfchain;(surf = *chain) != NULL;chain++)
1341                                 if (surf->visframe == r_framecount)
1342                                         RSurfShader_Wall_Pass_Glow(ent, surf, texture, texture->rendertype, texture->currentalpha);
1343                 if (fogenabled)
1344                         for (chain = surfchain;(surf = *chain) != NULL;chain++)
1345                                 if (surf->visframe == r_framecount)
1346                                         RSurfShader_Wall_Pass_Fog(ent, surf, texture, texture->rendertype, texture->currentalpha);
1347         }
1348         else
1349         {
1350                 // opaque lightmapped
1351                 if (r_textureunits.integer >= 2)
1352                 {
1353                         if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1354                                 RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(ent, texture, surfchain);
1355                         else
1356                         {
1357                                 RSurfShader_OpaqueWall_Pass_BaseDoubleTex(ent, texture, surfchain);
1358                                 if (r_detailtextures.integer)
1359                                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1360                         }
1361                 }
1362                 else
1363                 {
1364                         RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1365                         RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1366                         if (r_detailtextures.integer)
1367                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1368                 }
1369                 if (!r_dlightmap.integer && !(ent->effects & EF_FULLBRIGHT))
1370                         RSurfShader_OpaqueWall_Pass_Light(ent, texture, surfchain);
1371                 if (texture->skin.glow)
1372                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1373                 if (fogenabled)
1374                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1375         }
1376 }
1377
1378 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1379 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1380 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1381
1382 int Cshader_count = 3;
1383 Cshader_t *Cshaders[3] =
1384 {
1385         &Cshader_wall_lightmap,
1386         &Cshader_water,
1387         &Cshader_sky
1388 };
1389
1390 void R_UpdateTextureInfo(entity_render_t *ent)
1391 {
1392         int i, texframe, alttextures;
1393         texture_t *t;
1394
1395         if (!ent->model)
1396                 return;
1397
1398         alttextures = ent->frame != 0;
1399         texframe = (int)(cl.time * 5.0f);
1400         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1401         {
1402                 t = ent->model->brushq1.textures + i;
1403                 t->currentalpha = ent->alpha;
1404                 if (t->flags & SURF_WATERALPHA)
1405                         t->currentalpha *= r_wateralpha.value;
1406                 if (ent->effects & EF_ADDITIVE)
1407                         t->rendertype = SURFRENDER_ADD;
1408                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1409                         t->rendertype = SURFRENDER_ALPHA;
1410                 else
1411                         t->rendertype = SURFRENDER_OPAQUE;
1412                 // we don't need to set currentframe if t->animated is false because
1413                 // it was already set up by the texture loader for non-animating
1414                 if (t->animated)
1415                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1416         }
1417 }
1418
1419 void R_PrepareSurfaces(entity_render_t *ent)
1420 {
1421         int i, numsurfaces, *surfacevisframes;
1422         model_t *model;
1423         msurface_t *surf, *surfaces, **surfchain;
1424         vec3_t modelorg;
1425
1426         if (!ent->model)
1427                 return;
1428
1429         model = ent->model;
1430         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1431         numsurfaces = model->brushq1.nummodelsurfaces;
1432         surfaces = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1433         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1434
1435         R_UpdateTextureInfo(ent);
1436
1437         if (r_dynamic.integer && !r_shadow_realtime_dlight.integer)
1438                 R_MarkLights(ent);
1439
1440         if (model->brushq1.light_ambient != r_ambient.value || model->brushq1.light_scalebit != r_lightmapscalebit)
1441         {
1442                 model->brushq1.light_ambient = r_ambient.value;
1443                 model->brushq1.light_scalebit = r_lightmapscalebit;
1444                 for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
1445                         model->brushq1.surfaces[i + model->brushq1.firstmodelsurface].cached_dlight = true;
1446         }
1447         else
1448         {
1449                 for (i = 0;i < model->brushq1.light_styles;i++)
1450                 {
1451                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1452                         {
1453                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1454                                 for (surfchain = model->brushq1.light_styleupdatechains[i];*surfchain;surfchain++)
1455                                         (**surfchain).cached_dlight = true;
1456                         }
1457                 }
1458         }
1459
1460         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1461         {
1462                 if (surfacevisframes[i] == r_framecount)
1463                 {
1464 #if !WORLDNODECULLBACKFACES
1465                         // mark any backface surfaces as not visible
1466                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1467                         {
1468                                 if (!(surf->flags & SURF_PLANEBACK))
1469                                         surfacevisframes[i] = -1;
1470                         }
1471                         else
1472                         {
1473                                 if ((surf->flags & SURF_PLANEBACK))
1474                                         surfacevisframes[i] = -1;
1475                         }
1476                         if (surfacevisframes[i] == r_framecount)
1477 #endif
1478                         {
1479                                 c_faces++;
1480                                 surf->visframe = r_framecount;
1481                                 if (surf->cached_dlight && surf->lightmaptexture != NULL && !r_vertexsurfaces.integer)
1482                                         R_BuildLightMap(ent, surf);
1483                         }
1484                 }
1485         }
1486 }
1487
1488 void R_DrawSurfaces(entity_render_t *ent, int type, msurface_t ***chains)
1489 {
1490         int i;
1491         texture_t *t;
1492         if (ent->model == NULL)
1493                 return;
1494         R_Mesh_Matrix(&ent->matrix);
1495         for (i = 0, t = ent->model->brushq1.textures;i < ent->model->brushq1.numtextures;i++, t++)
1496                 if (t->shader->shaderfunc[type] && t->currentframe && chains[i] != NULL)
1497                         t->shader->shaderfunc[type](ent, t->currentframe, chains[i]);
1498 }
1499
1500 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1501 {
1502         int i;
1503         float *v;
1504         rmeshstate_t m;
1505         const entity_render_t *ent = calldata1;
1506         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1507         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1508         GL_DepthMask(false);
1509         GL_DepthTest(true);
1510         R_Mesh_Matrix(&ent->matrix);
1511         GL_VertexPointer(varray_vertex3f);
1512
1513         memset(&m, 0, sizeof(m));
1514         R_Mesh_State_Texture(&m);
1515
1516         i = portal - ent->model->brushq1.portals;
1517         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_colorscale,
1518                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_colorscale,
1519                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_colorscale,
1520                          0.125f);
1521         if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1522         {
1523                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1524                         VectorCopy(portal->points[i].position, v);
1525         }
1526         else
1527                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1528                         VectorCopy(portal->points[i].position, v);
1529         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1530 }
1531
1532 // LordHavoc: this is just a nice debugging tool, very slow
1533 static void R_DrawPortals(entity_render_t *ent)
1534 {
1535         int i;
1536         mportal_t *portal, *endportal;
1537         float temp[3], center[3], f;
1538         if (ent->model == NULL)
1539                 return;
1540         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1541         {
1542                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1543                 {
1544                         VectorClear(temp);
1545                         for (i = 0;i < portal->numpoints;i++)
1546                                 VectorAdd(temp, portal->points[i].position, temp);
1547                         f = ixtable[portal->numpoints];
1548                         VectorScale(temp, f, temp);
1549                         Matrix4x4_Transform(&ent->matrix, temp, center);
1550                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1551                 }
1552         }
1553 }
1554
1555 void R_PrepareBrushModel(entity_render_t *ent)
1556 {
1557         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1558         msurface_t *surf;
1559         model_t *model;
1560 #if WORLDNODECULLBACKFACES
1561         vec3_t modelorg;
1562 #endif
1563
1564         // because bmodels can be reused, we have to decide which things to render
1565         // from scratch every time
1566         model = ent->model;
1567         if (model == NULL)
1568                 return;
1569 #if WORLDNODECULLBACKFACES
1570         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1571 #endif
1572         numsurfaces = model->brushq1.nummodelsurfaces;
1573         surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1574         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1575         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1576         for (i = 0;i < numsurfaces;i++, surf++)
1577         {
1578 #if WORLDNODECULLBACKFACES
1579                 // mark any backface surfaces as not visible
1580                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1581                 {
1582                         if ((surf->flags & SURF_PLANEBACK))
1583                                 surfacevisframes[i] = r_framecount;
1584                 }
1585                 else if (!(surf->flags & SURF_PLANEBACK))
1586                         surfacevisframes[i] = r_framecount;
1587 #else
1588                 surfacevisframes[i] = r_framecount;
1589 #endif
1590                 surf->dlightframe = -1;
1591         }
1592         R_PrepareSurfaces(ent);
1593 }
1594
1595 void R_SurfaceWorldNode (entity_render_t *ent)
1596 {
1597         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1598         msurface_t *surf;
1599         mleaf_t *leaf;
1600         model_t *model;
1601         vec3_t modelorg;
1602
1603         // equivilant to quake's RecursiveWorldNode but faster and more effective
1604         model = ent->model;
1605         if (model == NULL)
1606                 return;
1607         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1608         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1609         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1610
1611         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1612         {
1613                 if (!R_CullBox (leaf->mins, leaf->maxs))
1614                 {
1615                         c_leafs++;
1616                         leaf->visframe = r_framecount;
1617                 }
1618         }
1619
1620         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1621         {
1622                 surfnum = model->brushq1.pvssurflist[i];
1623                 surf = model->brushq1.surfaces + surfnum;
1624 #if WORLDNODECULLBACKFACES
1625                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1626                 {
1627                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1628                                 surfacevisframes[surfnum] = r_framecount;
1629                 }
1630                 else
1631                 {
1632                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1633                                 surfacevisframes[surfnum] = r_framecount;
1634                 }
1635 #else
1636                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1637                         surfacevisframes[surfnum] = r_framecount;
1638 #endif
1639         }
1640 }
1641
1642 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1643 {
1644         int c, leafstackpos, *mark, *surfacevisframes, bitnum;
1645 #if WORLDNODECULLBACKFACES
1646         int n;
1647         msurface_t *surf;
1648 #endif
1649         mleaf_t *leaf, *leafstack[8192];
1650         mportal_t *p;
1651         vec3_t modelorg;
1652         msurface_t *surfaces;
1653         if (ent->model == NULL)
1654                 return;
1655         // LordHavoc: portal-passage worldnode with PVS;
1656         // follows portals leading outward from viewleaf, does not venture
1657         // offscreen or into leafs that are not visible, faster than Quake's
1658         // RecursiveWorldNode
1659         surfaces = ent->model->brushq1.surfaces;
1660         surfacevisframes = ent->model->brushq1.surfacevisframes;
1661         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1662         viewleaf->worldnodeframe = r_framecount;
1663         leafstack[0] = viewleaf;
1664         leafstackpos = 1;
1665         while (leafstackpos)
1666         {
1667                 c_leafs++;
1668                 leaf = leafstack[--leafstackpos];
1669                 leaf->visframe = r_framecount;
1670                 // draw any surfaces bounding this leaf
1671                 if (leaf->nummarksurfaces)
1672                 {
1673                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1674                         {
1675 #if WORLDNODECULLBACKFACES
1676                                 n = *mark++;
1677                                 if (surfacevisframes[n] != r_framecount)
1678                                 {
1679                                         surf = surfaces + n;
1680                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1681                                         {
1682                                                 if ((surf->flags & SURF_PLANEBACK))
1683                                                         surfacevisframes[n] = r_framecount;
1684                                         }
1685                                         else
1686                                         {
1687                                                 if (!(surf->flags & SURF_PLANEBACK))
1688                                                         surfacevisframes[n] = r_framecount;
1689                                         }
1690                                 }
1691 #else
1692                                 surfacevisframes[*mark++] = r_framecount;
1693 #endif
1694                         }
1695                 }
1696                 // follow portals into other leafs
1697                 for (p = leaf->portals;p;p = p->next)
1698                 {
1699                         // LordHavoc: this DotProduct hurts less than a cache miss
1700                         // (which is more likely to happen if backflowing through leafs)
1701                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1702                         {
1703                                 leaf = p->past;
1704                                 if (leaf->worldnodeframe != r_framecount)
1705                                 {
1706                                         leaf->worldnodeframe = r_framecount;
1707                                         // FIXME: R_CullBox is absolute, should be done relative
1708                                         bitnum = (leaf - ent->model->brushq1.leafs) - 1;
1709                                         if ((r_pvsbits[bitnum >> 3] & (1 << (bitnum & 7))) && !R_CullBox(leaf->mins, leaf->maxs))
1710                                                 leafstack[leafstackpos++] = leaf;
1711                                 }
1712                         }
1713                 }
1714         }
1715 }
1716
1717 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1718 {
1719         int j, c, *surfacepvsframes, *mark;
1720         mleaf_t *leaf;
1721         model_t *model;
1722
1723         model = ent->model;
1724         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1725         {
1726                 model->brushq1.pvsframecount++;
1727                 model->brushq1.pvsviewleaf = viewleaf;
1728                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1729                 model->brushq1.pvsleafchain = NULL;
1730                 model->brushq1.pvssurflistlength = 0;
1731                 if (viewleaf)
1732                 {
1733                         surfacepvsframes = model->brushq1.surfacepvsframes;
1734                         for (j = 0;j < model->brushq1.visleafs;j++)
1735                         {
1736                                 if (r_pvsbits[j >> 3] & (1 << (j & 7)))
1737                                 {
1738                                         leaf = model->brushq1.leafs + j + 1;
1739                                         leaf->pvsframe = model->brushq1.pvsframecount;
1740                                         leaf->pvschain = model->brushq1.pvsleafchain;
1741                                         model->brushq1.pvsleafchain = leaf;
1742                                         // mark surfaces bounding this leaf as visible
1743                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1744                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1745                                 }
1746                         }
1747                         model->brushq1.BuildPVSTextureChains(model);
1748                 }
1749         }
1750 }
1751
1752 void R_WorldVisibility(entity_render_t *ent)
1753 {
1754         vec3_t modelorg;
1755         mleaf_t *viewleaf;
1756
1757         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1758         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1759         R_PVSUpdate(ent, viewleaf);
1760
1761         if (!viewleaf)
1762                 return;
1763
1764         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1765                 R_SurfaceWorldNode (ent);
1766         else
1767                 R_PortalWorldNode (ent, viewleaf);
1768 }
1769
1770 void R_DrawWorld(entity_render_t *ent)
1771 {
1772         if (ent->model == NULL)
1773                 return;
1774         if (!ent->model->brushq1.numleafs && ent->model->Draw)
1775                 ent->model->Draw(ent);
1776         else
1777         {
1778                 R_PrepareSurfaces(ent);
1779                 R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1780                 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1781                 if (r_drawportals.integer)
1782                         R_DrawPortals(ent);
1783         }
1784 }
1785
1786 void R_Model_Brush_DrawSky(entity_render_t *ent)
1787 {
1788         if (ent->model == NULL)
1789                 return;
1790         if (ent != &cl_entities[0].render)
1791                 R_PrepareBrushModel(ent);
1792         R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1793 }
1794
1795 void R_Model_Brush_Draw(entity_render_t *ent)
1796 {
1797         if (ent->model == NULL)
1798                 return;
1799         c_bmodels++;
1800         if (ent != &cl_entities[0].render)
1801                 R_PrepareBrushModel(ent);
1802         R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1803 }
1804
1805 void R_Model_Brush_DrawShadowVolume (entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1806 {
1807         int i;
1808         msurface_t *surf;
1809         float projectdistance, f, temp[3], lightradius2;
1810         surfmesh_t *mesh;
1811         if (ent->model == NULL)
1812                 return;
1813         R_Mesh_Matrix(&ent->matrix);
1814         lightradius2 = lightradius * lightradius;
1815         R_UpdateTextureInfo(ent);
1816         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1817         for (i = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;i < ent->model->brushq1.nummodelsurfaces;i++, surf++)
1818         {
1819                 if (surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && surf->flags & SURF_SHADOWCAST)
1820                 {
1821                         f = PlaneDiff(relativelightorigin, surf->plane);
1822                         if (surf->flags & SURF_PLANEBACK)
1823                                 f = -f;
1824                         // draw shadows only for frontfaces and only if they are close
1825                         if (f >= 0.1 && f < lightradius)
1826                         {
1827                                 temp[0] = bound(surf->poly_mins[0], relativelightorigin[0], surf->poly_maxs[0]) - relativelightorigin[0];
1828                                 temp[1] = bound(surf->poly_mins[1], relativelightorigin[1], surf->poly_maxs[1]) - relativelightorigin[1];
1829                                 temp[2] = bound(surf->poly_mins[2], relativelightorigin[2], surf->poly_maxs[2]) - relativelightorigin[2];
1830                                 if (DotProduct(temp, temp) < lightradius2)
1831                                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1832                                                 R_Shadow_Volume(mesh->numverts, mesh->numtriangles, mesh->vertex3f, mesh->element3i, mesh->neighbor3i, relativelightorigin, lightradius, projectdistance);
1833                         }
1834                 }
1835         }
1836 }
1837
1838 void R_Model_Brush_DrawLightForSurfaceList(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, msurface_t **surflist, int numsurfaces, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1839 {
1840         int surfnum;
1841         msurface_t *surf;
1842         texture_t *t;
1843         surfmesh_t *mesh;
1844         if (ent->model == NULL)
1845                 return;
1846         R_Mesh_Matrix(&ent->matrix);
1847         R_UpdateTextureInfo(ent);
1848         for (surfnum = 0;surfnum < numsurfaces;surfnum++)
1849         {
1850                 surf = surflist[surfnum];
1851                 if (surf->visframe == r_framecount)
1852                 {
1853                         t = surf->texinfo->texture->currentframe;
1854                         if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1855                         {
1856                                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1857                                 {
1858                                         R_Shadow_DiffuseLighting(mesh->numverts, mesh->numtriangles, mesh->element3i, mesh->vertex3f, mesh->svector3f, mesh->tvector3f, mesh->normal3f, mesh->texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1859                                         R_Shadow_SpecularLighting(mesh->numverts, mesh->numtriangles, mesh->element3i, mesh->vertex3f, mesh->svector3f, mesh->tvector3f, mesh->normal3f, mesh->texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1860                                 }
1861                         }
1862                 }
1863         }
1864 }
1865
1866 void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1867 {
1868         int surfnum;
1869         msurface_t *surf;
1870         texture_t *t;
1871         float f, lightmins[3], lightmaxs[3];
1872         surfmesh_t *mesh;
1873         if (ent->model == NULL)
1874                 return;
1875         R_Mesh_Matrix(&ent->matrix);
1876         lightmins[0] = relativelightorigin[0] - lightradius;
1877         lightmins[1] = relativelightorigin[1] - lightradius;
1878         lightmins[2] = relativelightorigin[2] - lightradius;
1879         lightmaxs[0] = relativelightorigin[0] + lightradius;
1880         lightmaxs[1] = relativelightorigin[1] + lightradius;
1881         lightmaxs[2] = relativelightorigin[2] + lightradius;
1882         R_UpdateTextureInfo(ent);
1883         for (surfnum = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;surfnum < ent->model->brushq1.nummodelsurfaces;surfnum++, surf++)
1884         {
1885                 if ((ent != &cl_entities[0].render || surf->visframe == r_framecount) && BoxesOverlap(surf->poly_mins, surf->poly_maxs, lightmins, lightmaxs))
1886                 {
1887                         f = PlaneDiff(relativelightorigin, surf->plane);
1888                         if (surf->flags & SURF_PLANEBACK)
1889                                 f = -f;
1890                         if (f >= -0.1 && f < lightradius)
1891                         {
1892                                 t = surf->texinfo->texture->currentframe;
1893                                 if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1894                                 {
1895                                         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1896                                         {
1897                                                 R_Shadow_DiffuseLighting(mesh->numverts, mesh->numtriangles, mesh->element3i, mesh->vertex3f, mesh->svector3f, mesh->tvector3f, mesh->normal3f, mesh->texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1898                                                 R_Shadow_SpecularLighting(mesh->numverts, mesh->numtriangles, mesh->element3i, mesh->vertex3f, mesh->svector3f, mesh->tvector3f, mesh->normal3f, mesh->texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1899                                         }
1900                                 }
1901                         }
1902                 }
1903         }
1904 }
1905
1906 void R_DrawCollisionBrush(colbrushf_t *brush)
1907 {
1908         int i;
1909         i = ((int)brush) / sizeof(colbrushf_t);
1910         GL_Color((i & 31) * (1.0f / 32.0f) * r_colorscale, ((i >> 5) & 31) * (1.0f / 32.0f) * r_colorscale, ((i >> 10) & 31) * (1.0f / 32.0f) * r_colorscale, 0.2f);
1911         GL_VertexPointer(brush->points->v);
1912         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1913 }
1914
1915 void R_Q3BSP_DrawFace(entity_render_t *ent, q3mface_t *face)
1916 {
1917         rmeshstate_t m;
1918         if ((face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW) || !face->numtriangles)
1919                 return;
1920         face->visframe = r_framecount;
1921         memset(&m, 0, sizeof(m));
1922         GL_BlendFunc(GL_ONE, GL_ZERO);
1923         GL_DepthMask(true);
1924         GL_DepthTest(true);
1925         m.tex[0] = R_GetTexture(face->texture->skin.base);
1926         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1927         if (face->lightmaptexture)
1928         {
1929                 m.tex[1] = R_GetTexture(face->lightmaptexture);
1930                 m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
1931                 m.texrgbscale[1] = 2;
1932                 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1933         }
1934         else
1935         {
1936                 m.texrgbscale[0] = 2;
1937                 GL_ColorPointer(face->data_color4f);
1938         }
1939         R_Mesh_State_Texture(&m);
1940         GL_VertexPointer(face->data_vertex3f);
1941         R_Mesh_Draw(face->numvertices, face->numtriangles, face->data_element3i);
1942 }
1943
1944 /*
1945 void R_Q3BSP_DrawSky(entity_render_t *ent)
1946 {
1947 }
1948 */
1949
1950 void R_Q3BSP_RecursiveWorldNode(entity_render_t *ent, q3mnode_t *node, const vec3_t modelorg, qbyte *pvs, int markframe)
1951 {
1952         int i;
1953         q3mleaf_t *leaf;
1954         q3mface_t *face;
1955         while (node->isnode)
1956         {
1957                 if (R_CullBox(node->mins, node->maxs))
1958                         return;
1959                 R_Q3BSP_RecursiveWorldNode(ent, node->children[0], modelorg, pvs, markframe);
1960                 node = node->children[1];
1961         }
1962         if (R_CullBox(node->mins, node->maxs))
1963                 return;
1964         leaf = (q3mleaf_t *)node;
1965         if (pvs[leaf->clusterindex >> 3] & (1 << (leaf->clusterindex & 7)))
1966         {
1967                 for (i = 0;i < leaf->numleaffaces;i++)
1968                 {
1969                         face = leaf->firstleafface[i];
1970                         if (face->markframe != markframe)
1971                         {
1972                                 face->markframe = markframe;
1973                                 if (!R_CullBox(face->mins, face->maxs))
1974                                         R_Q3BSP_DrawFace(ent, face);
1975                         }
1976                 }
1977         }
1978 }
1979
1980
1981
1982 void R_Q3BSP_Draw(entity_render_t *ent)
1983 {
1984         int i;
1985         q3mface_t *face;
1986         vec3_t modelorg;
1987         model_t *model;
1988         qbyte *pvs;
1989         static int markframe = 0;
1990         R_Mesh_Matrix(&ent->matrix);
1991         model = ent->model;
1992         if (r_drawcollisionbrushes.integer < 2)
1993         {
1994                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1995                 if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1996                         R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
1997                 else
1998                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1999                                 R_Q3BSP_DrawFace(ent, face);
2000         }
2001         if (r_drawcollisionbrushes.integer >= 1)
2002         {
2003                 rmeshstate_t m;
2004                 memset(&m, 0, sizeof(m));
2005                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2006                 GL_DepthMask(false);
2007                 GL_DepthTest(true);
2008                 R_Mesh_State_Texture(&m);
2009                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
2010                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
2011                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
2012         }
2013 }
2014
2015 /*
2016 void R_Q3BSP_DrawFakeShadow(entity_render_t *ent)
2017 {
2018 }
2019 */
2020
2021 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
2022 {
2023         int i;
2024         q3mface_t *face;
2025         vec3_t modelorg, lightmins, lightmaxs;
2026         model_t *model;
2027         float projectdistance;
2028         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
2029         if (r_drawcollisionbrushes.integer < 2)
2030         {
2031                 model = ent->model;
2032                 R_Mesh_Matrix(&ent->matrix);
2033                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
2034                 lightmins[0] = relativelightorigin[0] - lightradius;
2035                 lightmins[1] = relativelightorigin[1] - lightradius;
2036                 lightmins[2] = relativelightorigin[2] - lightradius;
2037                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2038                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2039                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2040                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2041                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
2042                 //else
2043                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2044                                 if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2045                                         R_Shadow_Volume(face->numvertices, face->numtriangles, face->data_vertex3f, face->data_element3i, face->data_neighbor3i, relativelightorigin, lightradius, projectdistance);
2046         }
2047 }
2048
2049 void R_Q3BSP_DrawFaceLight(entity_render_t *ent, q3mface_t *face, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
2050 {
2051         if ((face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW) || !face->numtriangles)
2052                 return;
2053         R_Shadow_DiffuseLighting(face->numvertices, face->numtriangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.base, face->texture->skin.nmap, NULL);
2054         R_Shadow_SpecularLighting(face->numvertices, face->numtriangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.gloss, face->texture->skin.nmap, NULL);
2055 }
2056
2057 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
2058 {
2059         int i;
2060         q3mface_t *face;
2061         vec3_t modelorg, lightmins, lightmaxs;
2062         model_t *model;
2063         //qbyte *pvs;
2064         //static int markframe = 0;
2065         if (r_drawcollisionbrushes.integer < 2)
2066         {
2067                 model = ent->model;
2068                 R_Mesh_Matrix(&ent->matrix);
2069                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
2070                 lightmins[0] = relativelightorigin[0] - lightradius;
2071                 lightmins[1] = relativelightorigin[1] - lightradius;
2072                 lightmins[2] = relativelightorigin[2] - lightradius;
2073                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2074                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2075                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2076                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2077                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
2078                 //else
2079                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2080                                 if ((ent != &cl_entities[0].render || face->visframe == r_framecount) && BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2081                                         R_Q3BSP_DrawFaceLight(ent, face, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz);
2082         }
2083 }
2084
2085 static void gl_surf_start(void)
2086 {
2087 }
2088
2089 static void gl_surf_shutdown(void)
2090 {
2091 }
2092
2093 static void gl_surf_newmap(void)
2094 {
2095 }
2096
2097 void GL_Surf_Init(void)
2098 {
2099         int i;
2100         dlightdivtable[0] = 4194304;
2101         for (i = 1;i < 32768;i++)
2102                 dlightdivtable[i] = 4194304 / (i << 7);
2103
2104         Cvar_RegisterVariable(&r_ambient);
2105         Cvar_RegisterVariable(&r_vertexsurfaces);
2106         Cvar_RegisterVariable(&r_dlightmap);
2107         Cvar_RegisterVariable(&r_drawportals);
2108         Cvar_RegisterVariable(&r_testvis);
2109         Cvar_RegisterVariable(&r_floatbuildlightmap);
2110         Cvar_RegisterVariable(&r_detailtextures);
2111         Cvar_RegisterVariable(&r_surfaceworldnode);
2112         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2113
2114         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2115 }
2116