gl_rsurf.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23 #include "r_shadow.h"
  24
  25 #define MAX_LIGHTMAP_SIZE 256
  26
  27 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  28 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  29
  30 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  31
  32 cvar_t r_ambient = {0, "r_ambient", "0"};
  33 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  34 cvar_t r_testvis = {0, "r_testvis", "0"};
  35 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
  36 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  37 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "1"};
  38 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  39 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  40 cvar_t gl_lightmaps = {0, "gl_lightmaps", "0"};
  41
  42 /*
  43 // FIXME: these arrays are huge!
  44 int r_q1bsp_maxmarkleafs;
  45 int r_q1bsp_nummarkleafs;
  46 mleaf_t *r_q1bsp_maxleaflist[65536];
  47 int r_q1bsp_maxmarksurfaces;
  48 int r_q1bsp_nummarksurfaces;
  49 msurface_t *r_q1bsp_maxsurfacelist[65536];
  50
  51 // FIXME: these arrays are huge!
  52 int r_q3bsp_maxmarkleafs;
  53 int r_q3bsp_nummarkleafs;
  54 q3mleaf_t *r_q3bsp_maxleaflist[65536];
  55 int r_q3bsp_maxmarksurfaces;
  56 int r_q3bsp_nummarksurfaces;
  57 q3mface_t *r_q3bsp_maxsurfacelist[65536];
  58 */
  59
  60 static int dlightdivtable[32768];
  61
  62 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  63 {
  64         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
  65         unsigned int *bl;
  66         float dist, impact[3], local[3];
  67         dlight_t *light;
  68
  69         lit = false;
  70
  71         smax = (surf->extents[0] >> 4) + 1;
  72         tmax = (surf->extents[1] >> 4) + 1;
  73         smax3 = smax * 3;
  74
  75         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
  76         {
  77                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  78                         continue;                                       // not lit by this light
  79
  80                 Matrix4x4_Transform(matrix, light->origin, local);
  81                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  82
  83                 // for comparisons to minimum acceptable light
  84                 // compensate for LIGHTOFFSET
  85                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
  86
  87                 dist2 = dist * dist;
  88                 dist2 += LIGHTOFFSET;
  89                 if (dist2 >= maxdist)
  90                         continue;
  91
  92                 if (surf->plane->type < 3)
  93                 {
  94                         VectorCopy(local, impact);
  95                         impact[surf->plane->type] -= dist;
  96                 }
  97                 else
  98                 {
  99                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 100                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 101                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 102                 }
 103
 104                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 105                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 106
 107                 s = bound(0, impacts, smax * 16) - impacts;
 108                 t = bound(0, impactt, tmax * 16) - impactt;
 109                 i = s * s + t * t + dist2;
 110                 if (i > maxdist)
 111                         continue;
 112
 113                 // reduce calculations
 114                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 115                         sdtable[s] = i * i + dist2;
 116
 117                 maxdist3 = maxdist - dist2;
 118
 119                 // convert to 8.8 blocklights format
 120                 red = light->rtlight.lightmap_light[0] * (1.0f / 128.0f);
 121                 green = light->rtlight.lightmap_light[1] * (1.0f / 128.0f);
 122                 blue = light->rtlight.lightmap_light[2] * (1.0f / 128.0f);
 123                 subtract = (int) (light->rtlight.lightmap_subtract * 4194304.0f);
 124                 bl = intblocklights;
 125
 126                 i = impactt;
 127                 for (t = 0;t < tmax;t++, i -= 16)
 128                 {
 129                         td = i * i;
 130                         // make sure some part of it is visible on this line
 131                         if (td < maxdist3)
 132                         {
 133                                 maxdist2 = maxdist - td;
 134                                 for (s = 0;s < smax;s++)
 135                                 {
 136                                         if (sdtable[s] < maxdist2)
 137                                         {
 138                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 139                                                 if (k > 0)
 140                                                 {
 141                                                         bl[0] += (red   * k);
 142                                                         bl[1] += (green * k);
 143                                                         bl[2] += (blue  * k);
 144                                                         lit = true;
 145                                                 }
 146                                         }
 147                                         bl += 3;
 148                                 }
 149                         }
 150                         else // skip line
 151                                 bl += smax3;
 152                 }
 153         }
 154         return lit;
 155 }
 156
 157 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 158 {
 159         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 160         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 161         dlight_t *light;
 162
 163         lit = false;
 164
 165         smax = (surf->extents[0] >> 4) + 1;
 166         tmax = (surf->extents[1] >> 4) + 1;
 167         smax3 = smax * 3;
 168
 169         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
 170         {
 171                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 172                         continue;                                       // not lit by this light
 173
 174                 Matrix4x4_Transform(matrix, light->origin, local);
 175                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 176
 177                 // for comparisons to minimum acceptable light
 178                 // compensate for LIGHTOFFSET
 179                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
 180
 181                 dist2 = dist * dist;
 182                 dist2 += LIGHTOFFSET;
 183                 if (dist2 >= maxdist)
 184                         continue;
 185
 186                 if (surf->plane->type < 3)
 187                 {
 188                         VectorCopy(local, impact);
 189                         impact[surf->plane->type] -= dist;
 190                 }
 191                 else
 192                 {
 193                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 194                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 195                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 196                 }
 197
 198                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 199                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 200
 201                 td = bound(0, impacts, smax * 16) - impacts;
 202                 td1 = bound(0, impactt, tmax * 16) - impactt;
 203                 td = td * td + td1 * td1 + dist2;
 204                 if (td > maxdist)
 205                         continue;
 206
 207                 // reduce calculations
 208                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 209                         sdtable[s] = td1 * td1 + dist2;
 210
 211                 maxdist3 = maxdist - dist2;
 212
 213                 // convert to 8.8 blocklights format
 214                 red = light->rtlight.lightmap_light[0];
 215                 green = light->rtlight.lightmap_light[1];
 216                 blue = light->rtlight.lightmap_light[2];
 217                 subtract = light->rtlight.lightmap_subtract * 32768.0f;
 218                 bl = floatblocklights;
 219
 220                 td1 = impactt;
 221                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 222                 {
 223                         td = td1 * td1;
 224                         // make sure some part of it is visible on this line
 225                         if (td < maxdist3)
 226                         {
 227                                 maxdist2 = maxdist - td;
 228                                 for (s = 0;s < smax;s++)
 229                                 {
 230                                         if (sdtable[s] < maxdist2)
 231                                         {
 232                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 233                                                 bl[0] += red   * k;
 234                                                 bl[1] += green * k;
 235                                                 bl[2] += blue  * k;
 236                                                 lit = true;
 237                                         }
 238                                         bl += 3;
 239                                 }
 240                         }
 241                         else // skip line
 242                                 bl += smax3;
 243                 }
 244         }
 245         return lit;
 246 }
 247
 248 /*
 249 ===============
 250 R_BuildLightMap
 251
 252 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 253 ===============
 254 */
 255 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf)
 256 {
 257         if (!r_floatbuildlightmap.integer)
 258         {
 259                 int smax, tmax, i, j, size, size3, maps, stride, l;
 260                 unsigned int *bl, scale;
 261                 qbyte *lightmap, *out, *stain;
 262
 263                 // update cached lighting info
 264                 surf->cached_dlight = 0;
 265
 266                 smax = (surf->extents[0]>>4)+1;
 267                 tmax = (surf->extents[1]>>4)+1;
 268                 size = smax*tmax;
 269                 size3 = size*3;
 270                 lightmap = surf->samples;
 271
 272         // set to full bright if no light data
 273                 bl = intblocklights;
 274                 if (!ent->model->brushq1.lightdata)
 275                 {
 276                         for (i = 0;i < size3;i++)
 277                                 bl[i] = 255*256;
 278                 }
 279                 else
 280                 {
 281         // clear to no light
 282                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 283                         if (j)
 284                         {
 285                                 for (i = 0;i < size3;i++)
 286                                         *bl++ = j;
 287                         }
 288                         else
 289                                 memset(bl, 0, size*3*sizeof(unsigned int));
 290
 291                         if (surf->dlightframe == r_framecount)
 292                         {
 293                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 294                                 if (surf->cached_dlight)
 295                                         c_light_polys++;
 296                         }
 297
 298         // add all the lightmaps
 299                         if (lightmap)
 300                         {
 301                                 bl = intblocklights;
 302                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 303                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 304                                                 bl[i] += lightmap[i] * scale;
 305                         }
 306                 }
 307
 308                 stain = surf->stainsamples;
 309                 bl = intblocklights;
 310                 out = templight;
 311                 // the >> 16 shift adjusts down 8 bits to account for the stainmap
 312                 // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 313                 // be doubled during rendering to achieve 2x overbright
 314                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 315                 if (ent->model->brushq1.lightmaprgba)
 316                 {
 317                         stride = (surf->lightmaptexturestride - smax) * 4;
 318                         for (i = 0;i < tmax;i++, out += stride)
 319                         {
 320                                 for (j = 0;j < smax;j++)
 321                                 {
 322                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 323                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 324                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 325                                         *out++ = 255;
 326                                 }
 327                         }
 328                 }
 329                 else
 330                 {
 331                         stride = (surf->lightmaptexturestride - smax) * 3;
 332                         for (i = 0;i < tmax;i++, out += stride)
 333                         {
 334                                 for (j = 0;j < smax;j++)
 335                                 {
 336                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 337                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 338                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 339                                 }
 340                         }
 341                 }
 342
 343                 R_UpdateTexture(surf->lightmaptexture, templight);
 344         }
 345         else
 346         {
 347                 int smax, tmax, i, j, size, size3, maps, stride, l;
 348                 float *bl, scale;
 349                 qbyte *lightmap, *out, *stain;
 350
 351                 // update cached lighting info
 352                 surf->cached_dlight = 0;
 353
 354                 smax = (surf->extents[0]>>4)+1;
 355                 tmax = (surf->extents[1]>>4)+1;
 356                 size = smax*tmax;
 357                 size3 = size*3;
 358                 lightmap = surf->samples;
 359
 360         // set to full bright if no light data
 361                 bl = floatblocklights;
 362                 if (!ent->model->brushq1.lightdata)
 363                         j = 255*256;
 364                 else
 365                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 366
 367                 // clear to no light
 368                 if (j)
 369                 {
 370                         for (i = 0;i < size3;i++)
 371                                 *bl++ = j;
 372                 }
 373                 else
 374                         memset(bl, 0, size*3*sizeof(float));
 375
 376                 if (surf->dlightframe == r_framecount)
 377                 {
 378                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 379                         if (surf->cached_dlight)
 380                                 c_light_polys++;
 381                 }
 382
 383                 // add all the lightmaps
 384                 if (lightmap)
 385                 {
 386                         bl = floatblocklights;
 387                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 388                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 389                                         bl[i] += lightmap[i] * scale;
 390                 }
 391
 392                 stain = surf->stainsamples;
 393                 bl = floatblocklights;
 394                 out = templight;
 395                 // this scaling adjusts down 8 bits to account for the stainmap
 396                 // scaling, and remaps the 0.0-2.0 (2x overbright) to 0-256, it will
 397                 // be doubled during rendering to achieve 2x overbright
 398                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 399                 scale = 1.0f / (1 << 16);
 400                 if (ent->model->brushq1.lightmaprgba)
 401                 {
 402                         stride = (surf->lightmaptexturestride - smax) * 4;
 403                         for (i = 0;i < tmax;i++, out += stride)
 404                         {
 405                                 for (j = 0;j < smax;j++)
 406                                 {
 407                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 408                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 409                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 410                                         *out++ = 255;
 411                                 }
 412                         }
 413                 }
 414                 else
 415                 {
 416                         stride = (surf->lightmaptexturestride - smax) * 3;
 417                         for (i = 0;i < tmax;i++, out += stride)
 418                         {
 419                                 for (j = 0;j < smax;j++)
 420                                 {
 421                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 422                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 423                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 424                                 }
 425                         }
 426                 }
 427
 428                 R_UpdateTexture(surf->lightmaptexture, templight);
 429         }
 430 }
 431
 432 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 433 {
 434         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 435         msurface_t *surf, *endsurf;
 436         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 437         qbyte *bl;
 438         vec3_t impact;
 439
 440         maxdist = radius * radius;
 441         invradius = 1.0f / radius;
 442
 443 loc0:
 444         if (node->contents < 0)
 445                 return;
 446         ndist = PlaneDiff(origin, node->plane);
 447         if (ndist > radius)
 448         {
 449                 node = node->children[0];
 450                 goto loc0;
 451         }
 452         if (ndist < -radius)
 453         {
 454                 node = node->children[1];
 455                 goto loc0;
 456         }
 457
 458         dist2 = ndist * ndist;
 459         maxdist3 = maxdist - dist2;
 460
 461         if (node->plane->type < 3)
 462         {
 463                 VectorCopy(origin, impact);
 464                 impact[node->plane->type] -= ndist;
 465         }
 466         else
 467         {
 468                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 469                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 470                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 471         }
 472
 473         for (surf = model->brushq1.surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 474         {
 475                 if (surf->stainsamples)
 476                 {
 477                         smax = (surf->extents[0] >> 4) + 1;
 478                         tmax = (surf->extents[1] >> 4) + 1;
 479
 480                         impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 481                         impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 482
 483                         s = bound(0, impacts, smax * 16) - impacts;
 484                         t = bound(0, impactt, tmax * 16) - impactt;
 485                         i = s * s + t * t + dist2;
 486                         if (i > maxdist)
 487                                 continue;
 488
 489                         // reduce calculations
 490                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 491                                 sdtable[s] = i * i + dist2;
 492
 493                         bl = surf->stainsamples;
 494                         smax3 = smax * 3;
 495                         stained = false;
 496
 497                         i = impactt;
 498                         for (t = 0;t < tmax;t++, i -= 16)
 499                         {
 500                                 td = i * i;
 501                                 // make sure some part of it is visible on this line
 502                                 if (td < maxdist3)
 503                                 {
 504                                         maxdist2 = maxdist - td;
 505                                         for (s = 0;s < smax;s++)
 506                                         {
 507                                                 if (sdtable[s] < maxdist2)
 508                                                 {
 509                                                         ratio = lhrandom(0.0f, 1.0f);
 510                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 511                                                         if (a >= (1.0f / 64.0f))
 512                                                         {
 513                                                                 if (a > 1)
 514                                                                         a = 1;
 515                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 516                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 517                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 518                                                                 stained = true;
 519                                                         }
 520                                                 }
 521                                                 bl += 3;
 522                                         }
 523                                 }
 524                                 else // skip line
 525                                         bl += smax3;
 526                         }
 527                         // force lightmap upload
 528                         if (stained)
 529                                 surf->cached_dlight = true;
 530                 }
 531         }
 532
 533         if (node->children[0]->contents >= 0)
 534         {
 535                 if (node->children[1]->contents >= 0)
 536                 {
 537                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 538                         node = node->children[1];
 539                         goto loc0;
 540                 }
 541                 else
 542                 {
 543                         node = node->children[0];
 544                         goto loc0;
 545                 }
 546         }
 547         else if (node->children[1]->contents >= 0)
 548         {
 549                 node = node->children[1];
 550                 goto loc0;
 551         }
 552 }
 553
 554 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)
 555 {
 556         int n;
 557         float fcolor[8];
 558         entity_render_t *ent;
 559         model_t *model;
 560         vec3_t org;
 561         if (cl.worldmodel == NULL || !cl.worldmodel->brushq1.nodes)
 562                 return;
 563         fcolor[0] = cr1;
 564         fcolor[1] = cg1;
 565         fcolor[2] = cb1;
 566         fcolor[3] = ca1 * (1.0f / 64.0f);
 567         fcolor[4] = cr2 - cr1;
 568         fcolor[5] = cg2 - cg1;
 569         fcolor[6] = cb2 - cb1;
 570         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 571
 572         R_StainNode(cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, cl.worldmodel, origin, radius, fcolor);
 573
 574         // look for embedded bmodels
 575         for (n = 0;n < cl_num_brushmodel_entities;n++)
 576         {
 577                 ent = cl_brushmodel_entities[n];
 578                 model = ent->model;
 579                 if (model && model->name[0] == '*')
 580                 {
 581                         Mod_CheckLoaded(model);
 582                         if (model->brushq1.nodes)
 583                         {
 584                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 585                                 R_StainNode(model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 586                         }
 587                 }
 588         }
 589 }
 590
 591
 592 /*
 593 =============================================================
 594
 595         BRUSH MODELS
 596
 597 =============================================================
 598 */
 599
 600 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 601 {
 602         int i;
 603         float scale;
 604         const qbyte *lm;
 605         if (styles[0] != 255)
 606         {
 607                 for (i = 0;i < numverts;i++, c += 4)
 608                 {
 609                         lm = samples + lightmapoffsets[i];
 610                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 611                         VectorMA(c, scale, lm, c);
 612                         if (styles[1] != 255)
 613                         {
 614                                 lm += size3;
 615                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 616                                 VectorMA(c, scale, lm, c);
 617                                 if (styles[2] != 255)
 618                                 {
 619                                         lm += size3;
 620                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 621                                         VectorMA(c, scale, lm, c);
 622                                         if (styles[3] != 255)
 623                                         {
 624                                                 lm += size3;
 625                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 626                                                 VectorMA(c, scale, lm, c);
 627                                         }
 628                                 }
 629                         }
 630                 }
 631         }
 632 }
 633
 634 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 635 {
 636         int i;
 637         float diff[3], f;
 638         if (fogenabled)
 639         {
 640                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 641                 {
 642                         VectorSubtract(v, modelorg, diff);
 643                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 644                         VectorScale(c, f, c);
 645                 }
 646         }
 647         else if (colorscale != 1)
 648                 for (i = 0;i < numverts;i++, c += 4)
 649                         VectorScale(c, colorscale, c);
 650 }
 651
 652 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)
 653 {
 654         int i;
 655         float diff[3], f;
 656         r *= colorscale;
 657         g *= colorscale;
 658         b *= colorscale;
 659         if (fogenabled)
 660         {
 661                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 662                 {
 663                         VectorSubtract(v, modelorg, diff);
 664                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 665                         c[0] = r * f;
 666                         c[1] = g * f;
 667                         c[2] = b * f;
 668                         c[3] = a;
 669                 }
 670         }
 671         else
 672         {
 673                 for (i = 0;i < numverts;i++, c += 4)
 674                 {
 675                         c[0] = r;
 676                         c[1] = g;
 677                         c[2] = b;
 678                         c[3] = a;
 679                 }
 680         }
 681 }
 682
 683 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)
 684 {
 685         int i;
 686         float diff[3], f;
 687         r *= colorscale;
 688         g *= colorscale;
 689         b *= colorscale;
 690         for (i = 0;i < numverts;i++, v += 3, c += 4)
 691         {
 692                 VectorSubtract(v, modelorg, diff);
 693                 f = exp(fogdensity/DotProduct(diff, diff));
 694                 c[0] = r;
 695                 c[1] = g;
 696                 c[2] = b;
 697                 c[3] = a * f;
 698         }
 699 }
 700
 701 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
 702 {
 703         float f;
 704         const float *v;
 705         float *c;
 706         int i, l, lit = false;
 707         const dlight_t *light;
 708         vec3_t lightorigin;
 709         for (l = 0;l < r_numdlights;l++)
 710         {
 711                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 712                 {
 713                         light = &r_dlight[l];
 714                         Matrix4x4_Transform(matrix, light->origin, lightorigin);
 715                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
 716                         {
 717                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 718                                 if (f < light->rtlight.lightmap_cullradius2)
 719                                 {
 720                                         f = ((1.0f / f) - light->rtlight.lightmap_subtract) * scale;
 721                                         VectorMA(c, f, light->rtlight.lightmap_light, c);
 722                                         lit = true;
 723                                 }
 724                         }
 725                 }
 726         }
 727         return lit;
 728 }
 729
 730 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 731 {
 732         const msurface_t *surf;
 733         rmeshstate_t m;
 734
 735         // LordHavoc: HalfLife maps have freaky skypolys...
 736         if (ent->model->brush.ishlbsp)
 737                 return;
 738
 739         if (skyrendernow)
 740         {
 741                 skyrendernow = false;
 742                 if (skyrendermasked)
 743                         R_Sky();
 744         }
 745
 746         R_Mesh_Matrix(&ent->matrix);
 747
 748         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 749         if (skyrendermasked)
 750         {
 751                 // depth-only (masking)
 752                 GL_ColorMask(0,0,0,0);
 753                 // just to make sure that braindead drivers don't draw anything
 754                 // despite that colormask...
 755                 GL_BlendFunc(GL_ZERO, GL_ONE);
 756         }
 757         else
 758         {
 759                 // fog sky
 760                 GL_BlendFunc(GL_ONE, GL_ZERO);
 761         }
 762         GL_DepthMask(true);
 763         GL_DepthTest(true);
 764
 765         memset(&m, 0, sizeof(m));
 766         while((surf = *surfchain++) != NULL)
 767         {
 768                 if (surf->visframe == r_framecount)
 769                 {
 770                         m.pointer_vertex = surf->mesh.data_vertex3f;
 771                         R_Mesh_State(&m);
 772                         GL_LockArrays(0, surf->mesh.num_vertices);
 773                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 774                         GL_LockArrays(0, 0);
 775                 }
 776         }
 777         GL_ColorMask(1,1,1,1);
 778 }
 779
 780 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 781 {
 782         const entity_render_t *ent = calldata1;
 783         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 784         rmeshstate_t m;
 785         float alpha;
 786         float modelorg[3];
 787         texture_t *texture;
 788         float args[4] = {0.05f,0,0,0.04f};
 789
 790         R_Mesh_Matrix(&ent->matrix);
 791         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 792
 793         texture = surf->texinfo->texture->currentframe;
 794         alpha = texture->currentalpha;
 795         if (texture->rendertype == SURFRENDER_ADD)
 796         {
 797                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 798                 GL_DepthMask(false);
 799         }
 800         else if (texture->rendertype == SURFRENDER_ALPHA)
 801         {
 802                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 803                 GL_DepthMask(false);
 804         }
 805         else
 806         {
 807                 GL_BlendFunc(GL_ONE, GL_ZERO);
 808                 GL_DepthMask(true);
 809         }
 810         GL_DepthTest(true);
 811         GL_Color(1, 1, 1, alpha);
 812         memset(&m, 0, sizeof(m));
 813         m.pointer_vertex = surf->mesh.data_vertex3f;
 814         if (gl_textureshader && r_watershader.value && !fogenabled)
 815         {
 816                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(cl.time * 16)&63]);
 817                 m.tex[1] = R_GetTexture(texture->skin.base);
 818                 m.texcombinergb[0] = GL_REPLACE;
 819                 m.texcombinergb[1] = GL_REPLACE;
 820                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 821                 m.pointer_texcoord[1] = surf->mesh.data_texcoordtexture2f;
 822                 Matrix4x4_CreateFromQuakeEntity(&m.texmatrix[0], 0, 0, 0, 0, 0, 0, r_watershader.value);
 823                 Matrix4x4_CreateTranslate(&m.texmatrix[1], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 824                 R_Mesh_State(&m);
 825
 826                 GL_ActiveTexture(0);
 827                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 828                 GL_ActiveTexture(1);
 829                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 830                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 831                 qglTexEnvfv(GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 832                 qglEnable(GL_TEXTURE_SHADER_NV);
 833
 834                 GL_LockArrays(0, surf->mesh.num_vertices);
 835                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 836                 GL_LockArrays(0, 0);
 837
 838                 qglDisable(GL_TEXTURE_SHADER_NV);
 839                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 840                 GL_ActiveTexture(0);
 841         }
 842         else
 843         {
 844                 if (fogenabled)
 845                 {
 846                         R_FillColors(varray_color4f, surf->mesh.num_vertices, 1, 1, 1, alpha);
 847                         RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, surf->mesh.num_vertices, modelorg);
 848                         m.pointer_color = varray_color4f;
 849                 }
 850                 m.tex[0] = R_GetTexture(texture->skin.base);
 851                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 852                 if (r_waterscroll.value)
 853                 {
 854                         // scrolling in texture matrix
 855                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 856                 }
 857                 R_Mesh_State(&m);
 858
 859                 GL_LockArrays(0, surf->mesh.num_vertices);
 860                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 861                 GL_LockArrays(0, 0);
 862
 863                 if (fogenabled && texture->rendertype != SURFRENDER_ADD)
 864                 {
 865                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 866                         GL_DepthMask(false);
 867                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], alpha, 1, surf->mesh.num_vertices, modelorg);
 868                         m.tex[0] = R_GetTexture(texture->skin.fog);
 869                         R_Mesh_State(&m);
 870                         GL_LockArrays(0, surf->mesh.num_vertices);
 871                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 872                         GL_LockArrays(0, 0);
 873                 }
 874         }
 875 }
 876
 877 static void RSurfShader_Water(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 878 {
 879         const msurface_t *surf;
 880         msurface_t **chain;
 881         vec3_t center;
 882         if (texture->rendertype != SURFRENDER_OPAQUE)
 883         {
 884                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 885                 {
 886                         if (surf->visframe == r_framecount)
 887                         {
 888                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 889                                 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->brushq1.surfaces);
 890                         }
 891                 }
 892         }
 893         else
 894                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 895                         if (surf->visframe == r_framecount)
 896                                 RSurfShader_Water_Callback(ent, surf - ent->model->brushq1.surfaces);
 897 }
 898
 899 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 900 {
 901         float base, colorscale;
 902         rmeshstate_t m;
 903         float modelorg[3];
 904         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 905         memset(&m, 0, sizeof(m));
 906         if (rendertype == SURFRENDER_ADD)
 907         {
 908                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 909                 GL_DepthMask(false);
 910         }
 911         else if (rendertype == SURFRENDER_ALPHA)
 912         {
 913                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 914                 GL_DepthMask(false);
 915         }
 916         else
 917         {
 918                 GL_BlendFunc(GL_ONE, GL_ZERO);
 919                 GL_DepthMask(true);
 920         }
 921         m.tex[0] = R_GetTexture(texture->skin.base);
 922         colorscale = 1;
 923         if (gl_combine.integer)
 924         {
 925                 m.texrgbscale[0] = 4;
 926                 colorscale *= 0.25f;
 927         }
 928         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 929         GL_DepthTest(true);
 930
 931         m.pointer_color = varray_color4f;
 932         m.pointer_vertex = surf->mesh.data_vertex3f;
 933         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 934         R_Mesh_State(&m);
 935         R_FillColors(varray_color4f, surf->mesh.num_vertices, base, base, base, currentalpha);
 936         if (!(ent->effects & EF_FULLBRIGHT))
 937         {
 938                 if (surf->dlightframe == r_framecount)
 939                         RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, surf->mesh.num_vertices, surf->mesh.data_vertex3f, varray_color4f, 1);
 940                 if (surf->flags & SURF_LIGHTMAP)
 941                         RSurf_AddLightmapToVertexColors_Color4f(surf->mesh.data_lightmapoffsets, varray_color4f,surf->mesh.num_vertices, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 942         }
 943         RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 944         GL_LockArrays(0, surf->mesh.num_vertices);
 945         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 946         GL_LockArrays(0, 0);
 947 }
 948
 949 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 950 {
 951         rmeshstate_t m;
 952         float modelorg[3];
 953         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 954         memset(&m, 0, sizeof(m));
 955         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 956         GL_DepthMask(false);
 957         GL_DepthTest(true);
 958         m.pointer_color = varray_color4f;
 959         m.tex[0] = R_GetTexture(texture->skin.glow);
 960
 961         m.pointer_vertex = surf->mesh.data_vertex3f;
 962         if (m.tex[0])
 963                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 964         R_Mesh_State(&m);
 965         RSurf_FoggedColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surf->mesh.num_vertices, modelorg);
 966         GL_LockArrays(0, surf->mesh.num_vertices);
 967         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 968         GL_LockArrays(0, 0);
 969 }
 970
 971 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 972 {
 973         rmeshstate_t m;
 974         float modelorg[3];
 975         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 976         memset(&m, 0, sizeof(m));
 977         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 978         GL_DepthMask(false);
 979         GL_DepthTest(true);
 980         m.pointer_color = varray_color4f;
 981         m.tex[0] = R_GetTexture(texture->skin.fog);
 982
 983         m.pointer_vertex = surf->mesh.data_vertex3f;
 984         if (m.tex[0])
 985                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 986         R_Mesh_State(&m);
 987         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surf->mesh.num_vertices, modelorg);
 988         GL_LockArrays(0, surf->mesh.num_vertices);
 989         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 990         GL_LockArrays(0, 0);
 991 }
 992
 993 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 994 {
 995         const msurface_t *surf;
 996         rmeshstate_t m;
 997         int lightmaptexturenum;
 998         memset(&m, 0, sizeof(m));
 999         GL_BlendFunc(GL_ONE, GL_ZERO);
1000         GL_DepthMask(true);
1001         GL_DepthTest(true);
1002         m.tex[0] = R_GetTexture(texture->skin.base);
1003         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1004         m.texrgbscale[1] = 2;
1005         m.tex[2] = R_GetTexture(texture->skin.detail);
1006         m.texrgbscale[2] = 2;
1007         if (texture->skin.glow)
1008         {
1009                 m.tex[3] = R_GetTexture(texture->skin.glow);
1010                 m.texcombinergb[3] = GL_ADD;
1011         }
1012         if (r_shadow_realtime_world.integer)
1013                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
1014         else
1015                 GL_Color(1, 1, 1, 1);
1016
1017         while((surf = *surfchain++) != NULL)
1018         {
1019                 if (surf->visframe == r_framecount)
1020                 {
1021                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1022                         m.tex[1] = lightmaptexturenum;
1023                         m.pointer_vertex = surf->mesh.data_vertex3f;
1024                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1025                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1026                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
1027                         m.pointer_texcoord[3] = surf->mesh.data_texcoordtexture2f;
1028                         R_Mesh_State(&m);
1029                         GL_LockArrays(0, surf->mesh.num_vertices);
1030                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1031                         GL_LockArrays(0, 0);
1032                 }
1033         }
1034 }
1035
1036 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1037 {
1038         const msurface_t *surf;
1039         rmeshstate_t m;
1040         int lightmaptexturenum;
1041         memset(&m, 0, sizeof(m));
1042         GL_BlendFunc(GL_ONE, GL_ZERO);
1043         GL_DepthMask(true);
1044         GL_DepthTest(true);
1045         m.tex[0] = R_GetTexture(texture->skin.base);
1046         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1047         m.texrgbscale[1] = 2;
1048         m.tex[2] = R_GetTexture(texture->skin.detail);
1049         m.texrgbscale[2] = 2;
1050         if (r_shadow_realtime_world.integer)
1051                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
1052         else
1053                 GL_Color(1, 1, 1, 1);
1054
1055         while((surf = *surfchain++) != NULL)
1056         {
1057                 if (surf->visframe == r_framecount)
1058                 {
1059                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1060                         m.tex[1] = lightmaptexturenum;
1061                         m.pointer_vertex = surf->mesh.data_vertex3f;
1062                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1063                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1064                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
1065                         R_Mesh_State(&m);
1066                         GL_LockArrays(0, surf->mesh.num_vertices);
1067                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1068                         GL_LockArrays(0, 0);
1069                 }
1070         }
1071 }
1072
1073 static void RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1074 {
1075         const msurface_t *surf;
1076         rmeshstate_t m;
1077         int lightmaptexturenum;
1078         memset(&m, 0, sizeof(m));
1079         GL_BlendFunc(GL_ONE, GL_ZERO);
1080         GL_DepthMask(true);
1081         GL_DepthTest(true);
1082         m.tex[0] = R_GetTexture(texture->skin.base);
1083         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1084         m.texrgbscale[1] = 2;
1085         if (r_shadow_realtime_world.integer)
1086                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
1087         else
1088                 GL_Color(1, 1, 1, 1);
1089         while((surf = *surfchain++) != NULL)
1090         {
1091                 if (surf->visframe == r_framecount)
1092                 {
1093                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1094                         m.tex[1] = lightmaptexturenum;
1095                         m.pointer_vertex = surf->mesh.data_vertex3f;
1096                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1097                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1098                         R_Mesh_State(&m);
1099                         GL_LockArrays(0, surf->mesh.num_vertices);
1100                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1101                         GL_LockArrays(0, 0);
1102                 }
1103         }
1104 }
1105
1106 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1107 {
1108         const msurface_t *surf;
1109         rmeshstate_t m;
1110         memset(&m, 0, sizeof(m));
1111         GL_DepthMask(true);
1112         GL_DepthTest(true);
1113         GL_BlendFunc(GL_ONE, GL_ZERO);
1114         m.tex[0] = R_GetTexture(texture->skin.base);
1115         if (r_shadow_realtime_world.integer)
1116                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
1117         else
1118                 GL_Color(1, 1, 1, 1);
1119         while((surf = *surfchain++) != NULL)
1120         {
1121                 if (surf->visframe == r_framecount)
1122                 {
1123                         m.pointer_vertex = surf->mesh.data_vertex3f;
1124                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1125                         R_Mesh_State(&m);
1126                         GL_LockArrays(0, surf->mesh.num_vertices);
1127                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1128                         GL_LockArrays(0, 0);
1129                 }
1130         }
1131 }
1132
1133 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1134 {
1135         const msurface_t *surf;
1136         rmeshstate_t m;
1137         int lightmaptexturenum;
1138         memset(&m, 0, sizeof(m));
1139         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1140         GL_DepthMask(false);
1141         GL_DepthTest(true);
1142         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1143         GL_Color(1, 1, 1, 1);
1144         while((surf = *surfchain++) != NULL)
1145         {
1146                 if (surf->visframe == r_framecount)
1147                 {
1148                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1149                         m.tex[0] = lightmaptexturenum;
1150                         m.pointer_vertex = surf->mesh.data_vertex3f;
1151                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1152                         R_Mesh_State(&m);
1153                         GL_LockArrays(0, surf->mesh.num_vertices);
1154                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1155                         GL_LockArrays(0, 0);
1156                 }
1157         }
1158 }
1159
1160 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1161 {
1162         const msurface_t *surf;
1163         rmeshstate_t m;
1164         float modelorg[3];
1165         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1166         memset(&m, 0, sizeof(m));
1167         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1168         GL_DepthMask(false);
1169         GL_DepthTest(true);
1170         m.pointer_color = varray_color4f;
1171         while((surf = *surfchain++) != NULL)
1172         {
1173                 if (surf->visframe == r_framecount)
1174                 {
1175                         m.pointer_vertex = surf->mesh.data_vertex3f;
1176                         if (m.tex[0])
1177                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1178                         R_Mesh_State(&m);
1179                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surf->mesh.num_vertices, modelorg);
1180                         GL_LockArrays(0, surf->mesh.num_vertices);
1181                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1182                         GL_LockArrays(0, 0);
1183                 }
1184         }
1185 }
1186
1187 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1188 {
1189         const msurface_t *surf;
1190         rmeshstate_t m;
1191         memset(&m, 0, sizeof(m));
1192         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1193         GL_DepthMask(false);
1194         GL_DepthTest(true);
1195         m.tex[0] = R_GetTexture(texture->skin.detail);
1196         GL_Color(1, 1, 1, 1);
1197         while((surf = *surfchain++) != NULL)
1198         {
1199                 if (surf->visframe == r_framecount)
1200                 {
1201                         m.pointer_vertex = surf->mesh.data_vertex3f;
1202                         m.pointer_texcoord[0] = surf->mesh.data_texcoorddetail2f;
1203                         R_Mesh_State(&m);
1204                         GL_LockArrays(0, surf->mesh.num_vertices);
1205                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1206                         GL_LockArrays(0, 0);
1207                 }
1208         }
1209 }
1210
1211 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1212 {
1213         const msurface_t *surf;
1214         rmeshstate_t m;
1215         memset(&m, 0, sizeof(m));
1216         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1217         GL_DepthMask(false);
1218         GL_DepthTest(true);
1219         m.tex[0] = R_GetTexture(texture->skin.glow);
1220         GL_Color(1, 1, 1, 1);
1221         while((surf = *surfchain++) != NULL)
1222         {
1223                 if (surf->visframe == r_framecount)
1224                 {
1225                         m.pointer_vertex = surf->mesh.data_vertex3f;
1226                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1227                         R_Mesh_State(&m);
1228                         GL_LockArrays(0, surf->mesh.num_vertices);
1229                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1230                         GL_LockArrays(0, 0);
1231                 }
1232         }
1233 }
1234
1235 /*
1236 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1237 {
1238         const msurface_t *surf;
1239         rmeshstate_t m;
1240         memset(&m, 0, sizeof(m));
1241         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1242         GL_DepthMask(true);
1243         m.tex[0] = R_GetTexture(texture->skin.glow);
1244         if (m.tex[0])
1245                 GL_Color(1, 1, 1, 1);
1246         else
1247                 GL_Color(0, 0, 0, 1);
1248         while((surf = *surfchain++) != NULL)
1249         {
1250                 if (surf->visframe == r_framecount)
1251                 {
1252                         m.pointer_vertex = surf->mesh.data_vertex3f;
1253                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1254                         R_Mesh_State(&m);
1255                         GL_LockArrays(0, surf->mesh.num_vertices);
1256                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1257                         GL_LockArrays(0, 0);
1258                 }
1259         }
1260 }
1261 */
1262
1263 static void RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1264 {
1265         const msurface_t *surf;
1266         rmeshstate_t m;
1267         int lightmaptexturenum;
1268         memset(&m, 0, sizeof(m));
1269         GL_BlendFunc(GL_ONE, GL_ZERO);
1270         GL_DepthMask(true);
1271         GL_DepthTest(true);
1272         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1273         if (r_shadow_realtime_world.integer)
1274                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
1275         else
1276                 GL_Color(1, 1, 1, 1);
1277         while((surf = *surfchain++) != NULL)
1278         {
1279                 if (surf->visframe == r_framecount)
1280                 {
1281                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1282                         m.tex[0] = lightmaptexturenum;
1283                         m.pointer_vertex = surf->mesh.data_vertex3f;
1284                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1285                         R_Mesh_State(&m);
1286                         GL_LockArrays(0, surf->mesh.num_vertices);
1287                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1288                         GL_LockArrays(0, 0);
1289                 }
1290         }
1291 }
1292
1293 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1294 {
1295         const entity_render_t *ent = calldata1;
1296         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
1297         int rendertype;
1298         float currentalpha;
1299         texture_t *texture;
1300         R_Mesh_Matrix(&ent->matrix);
1301
1302         texture = surf->texinfo->texture;
1303         if (texture->animated)
1304                 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];
1305
1306         currentalpha = ent->alpha;
1307         if (ent->effects & EF_ADDITIVE)
1308                 rendertype = SURFRENDER_ADD;
1309         else if (currentalpha < 1 || texture->skin.fog != NULL)
1310                 rendertype = SURFRENDER_ALPHA;
1311         else
1312                 rendertype = SURFRENDER_OPAQUE;
1313
1314         RSurfShader_Wall_Pass_BaseVertex(ent, surf, texture, rendertype, currentalpha);
1315         if (texture->skin.glow)
1316                 RSurfShader_Wall_Pass_Glow(ent, surf, texture, rendertype, currentalpha);
1317         if (fogenabled)
1318                 RSurfShader_Wall_Pass_Fog(ent, surf, texture, rendertype, currentalpha);
1319 }
1320
1321 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1322 {
1323         const msurface_t *surf;
1324         msurface_t **chain;
1325         vec3_t center;
1326         if (texture->rendertype != SURFRENDER_OPAQUE)
1327         {
1328                 // transparent vertex shaded from lightmap
1329                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1330                 {
1331                         if (surf->visframe == r_framecount)
1332                         {
1333                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1334                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->brushq1.surfaces);
1335                         }
1336                 }
1337         }
1338         else if (ent->effects & EF_FULLBRIGHT)
1339         {
1340                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1341                 if (r_detailtextures.integer)
1342                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1343                 if (texture->skin.glow)
1344                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1345                 if (fogenabled)
1346                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1347         }
1348         /*
1349         // opaque base lighting
1350         else if (r_shadow_realtime_world.integer && r_shadow_realtime_world_lightmaps.value <= 0)
1351         {
1352                 if (r_ambient.value > 0)
1353                 {
1354                 }
1355                 else
1356                         RSurfShader_OpaqueWall_Pass_OpaqueGlow(ent, texture, surfchain);
1357                 if (fogenabled)
1358                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1359         }
1360         */
1361         // opaque lightmapped
1362         else if (r_textureunits.integer >= 4 && gl_combine.integer && r_detailtextures.integer && !gl_lightmaps.integer)
1363         {
1364                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetailGlow(ent, texture, surfchain);
1365                 if (fogenabled)
1366                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1367         }
1368         else if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer && !gl_lightmaps.integer)
1369         {
1370                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmapDetail(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         else if (r_textureunits.integer >= 2 && gl_combine.integer && !gl_lightmaps.integer)
1377         {
1378                 RSurfShader_OpaqueWall_Pass_BaseCombine_TextureLightmap(ent, texture, surfchain);
1379                 if (r_detailtextures.integer)
1380                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1381                 if (texture->skin.glow)
1382                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1383                 if (fogenabled)
1384                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1385         }
1386         else if (!gl_lightmaps.integer)
1387         {
1388                 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1389                 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1390                 if (r_detailtextures.integer)
1391                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1392                 if (texture->skin.glow)
1393                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1394                 if (fogenabled)
1395                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1396         }
1397         else
1398         {
1399                 RSurfShader_OpaqueWall_Pass_BaseLightmapOnly(ent, texture, surfchain);
1400                 if (fogenabled)
1401                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1402         }
1403 }
1404
1405 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1406 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1407 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1408
1409 int Cshader_count = 3;
1410 Cshader_t *Cshaders[3] =
1411 {
1412         &Cshader_wall_lightmap,
1413         &Cshader_water,
1414         &Cshader_sky
1415 };
1416
1417 void R_UpdateTextureInfo(entity_render_t *ent)
1418 {
1419         int i, texframe, alttextures;
1420         texture_t *t;
1421
1422         if (!ent->model)
1423                 return;
1424
1425         alttextures = ent->frame != 0;
1426         texframe = (int)(cl.time * 5.0f);
1427         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1428         {
1429                 t = ent->model->brushq1.textures + i;
1430                 t->currentalpha = ent->alpha;
1431                 if (t->flags & SURF_WATERALPHA)
1432                         t->currentalpha *= r_wateralpha.value;
1433                 if (ent->effects & EF_ADDITIVE)
1434                         t->rendertype = SURFRENDER_ADD;
1435                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1436                         t->rendertype = SURFRENDER_ALPHA;
1437                 else
1438                         t->rendertype = SURFRENDER_OPAQUE;
1439                 // we don't need to set currentframe if t->animated is false because
1440                 // it was already set up by the texture loader for non-animating
1441                 if (t->animated)
1442                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1443         }
1444 }
1445
1446 void R_PrepareSurfaces(entity_render_t *ent)
1447 {
1448         int i, numsurfaces, *surfacevisframes;
1449         model_t *model;
1450         msurface_t *surf, *surfaces, **surfchain;
1451         vec3_t modelorg;
1452
1453         if (!ent->model)
1454                 return;
1455
1456         model = ent->model;
1457         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1458         numsurfaces = model->brushq1.nummodelsurfaces;
1459         surfaces = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1460         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1461
1462         R_UpdateTextureInfo(ent);
1463
1464         if (r_dynamic.integer && !r_shadow_realtime_dlight.integer)
1465                 R_MarkLights(ent);
1466
1467         if (model->brushq1.light_ambient != r_ambient.value)
1468         {
1469                 model->brushq1.light_ambient = r_ambient.value;
1470                 for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
1471                         model->brushq1.surfaces[i + model->brushq1.firstmodelsurface].cached_dlight = true;
1472         }
1473         else
1474         {
1475                 for (i = 0;i < model->brushq1.light_styles;i++)
1476                 {
1477                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1478                         {
1479                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1480                                 for (surfchain = model->brushq1.light_styleupdatechains[i];*surfchain;surfchain++)
1481                                         (**surfchain).cached_dlight = true;
1482                         }
1483                 }
1484         }
1485
1486         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1487         {
1488                 if (surfacevisframes[i] == r_framecount)
1489                 {
1490 #if !WORLDNODECULLBACKFACES
1491                         // mark any backface surfaces as not visible
1492                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1493                         {
1494                                 if (!(surf->flags & SURF_PLANEBACK))
1495                                         surfacevisframes[i] = -1;
1496                         }
1497                         else
1498                         {
1499                                 if ((surf->flags & SURF_PLANEBACK))
1500                                         surfacevisframes[i] = -1;
1501                         }
1502                         if (surfacevisframes[i] == r_framecount)
1503 #endif
1504                         {
1505                                 c_faces++;
1506                                 surf->visframe = r_framecount;
1507                                 if (surf->cached_dlight && surf->lightmaptexture != NULL)
1508                                         R_BuildLightMap(ent, surf);
1509                         }
1510                 }
1511         }
1512 }
1513
1514 void R_DrawSurfaces(entity_render_t *ent, int type, msurface_t ***chains)
1515 {
1516         int i;
1517         texture_t *t;
1518         if (ent->model == NULL)
1519                 return;
1520         R_Mesh_Matrix(&ent->matrix);
1521         for (i = 0, t = ent->model->brushq1.textures;i < ent->model->brushq1.numtextures;i++, t++)
1522                 if (t->shader->shaderfunc[type] && t->currentframe && chains[i] != NULL)
1523                         t->shader->shaderfunc[type](ent, t->currentframe, chains[i]);
1524 }
1525
1526 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1527 {
1528         int i;
1529         float *v;
1530         rmeshstate_t m;
1531         const entity_render_t *ent = calldata1;
1532         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1533         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1534         GL_DepthMask(false);
1535         GL_DepthTest(true);
1536         R_Mesh_Matrix(&ent->matrix);
1537
1538         memset(&m, 0, sizeof(m));
1539         m.pointer_vertex = varray_vertex3f;
1540         R_Mesh_State(&m);
1541
1542         i = portal - ent->model->brushq1.portals;
1543         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1544                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1545                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1546                          0.125f);
1547         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
1548         {
1549                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1550                         VectorCopy(portal->points[i].position, v);
1551         }
1552         else
1553                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1554                         VectorCopy(portal->points[i].position, v);
1555         GL_LockArrays(0, portal->numpoints);
1556         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1557         GL_LockArrays(0, 0);
1558 }
1559
1560 // LordHavoc: this is just a nice debugging tool, very slow
1561 static void R_DrawPortals(entity_render_t *ent)
1562 {
1563         int i;
1564         mportal_t *portal, *endportal;
1565         float temp[3], center[3], f;
1566         if (ent->model == NULL)
1567                 return;
1568         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1569         {
1570                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1571                 {
1572                         VectorClear(temp);
1573                         for (i = 0;i < portal->numpoints;i++)
1574                                 VectorAdd(temp, portal->points[i].position, temp);
1575                         f = ixtable[portal->numpoints];
1576                         VectorScale(temp, f, temp);
1577                         Matrix4x4_Transform(&ent->matrix, temp, center);
1578                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1579                 }
1580         }
1581 }
1582
1583 void R_PrepareBrushModel(entity_render_t *ent)
1584 {
1585         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1586         msurface_t *surf;
1587         model_t *model;
1588 #if WORLDNODECULLBACKFACES
1589         vec3_t modelorg;
1590 #endif
1591
1592         // because bmodels can be reused, we have to decide which things to render
1593         // from scratch every time
1594         model = ent->model;
1595         if (model == NULL)
1596                 return;
1597 #if WORLDNODECULLBACKFACES
1598         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1599 #endif
1600         numsurfaces = model->brushq1.nummodelsurfaces;
1601         surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1602         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1603         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1604         for (i = 0;i < numsurfaces;i++, surf++)
1605         {
1606 #if WORLDNODECULLBACKFACES
1607                 // mark any backface surfaces as not visible
1608                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1609                 {
1610                         if ((surf->flags & SURF_PLANEBACK))
1611                                 surfacevisframes[i] = r_framecount;
1612                 }
1613                 else if (!(surf->flags & SURF_PLANEBACK))
1614                         surfacevisframes[i] = r_framecount;
1615 #else
1616                 surfacevisframes[i] = r_framecount;
1617 #endif
1618                 surf->dlightframe = -1;
1619         }
1620         R_PrepareSurfaces(ent);
1621 }
1622
1623 void R_SurfaceWorldNode (entity_render_t *ent)
1624 {
1625         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1626         msurface_t *surf;
1627         mleaf_t *leaf;
1628         model_t *model;
1629         vec3_t modelorg;
1630
1631         // equivilant to quake's RecursiveWorldNode but faster and more effective
1632         model = ent->model;
1633         if (model == NULL)
1634                 return;
1635         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1636         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1637         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1638
1639         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1640         {
1641                 if (!R_CullBox (leaf->mins, leaf->maxs))
1642                 {
1643                         c_leafs++;
1644                         leaf->visframe = r_framecount;
1645                 }
1646         }
1647
1648         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1649         {
1650                 surfnum = model->brushq1.pvssurflist[i];
1651                 surf = model->brushq1.surfaces + surfnum;
1652 #if WORLDNODECULLBACKFACES
1653                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1654                 {
1655                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1656                                 surfacevisframes[surfnum] = r_framecount;
1657                 }
1658                 else
1659                 {
1660                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1661                                 surfacevisframes[surfnum] = r_framecount;
1662                 }
1663 #else
1664                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1665                         surfacevisframes[surfnum] = r_framecount;
1666 #endif
1667         }
1668 }
1669
1670 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1671 {
1672         int c, leafstackpos, *mark, *surfacevisframes;
1673 #if WORLDNODECULLBACKFACES
1674         int n;
1675         msurface_t *surf;
1676 #endif
1677         mleaf_t *leaf, *leafstack[8192];
1678         mportal_t *p;
1679         vec3_t modelorg;
1680         msurface_t *surfaces;
1681         if (ent->model == NULL)
1682                 return;
1683         // LordHavoc: portal-passage worldnode with PVS;
1684         // follows portals leading outward from viewleaf, does not venture
1685         // offscreen or into leafs that are not visible, faster than Quake's
1686         // RecursiveWorldNode
1687         surfaces = ent->model->brushq1.surfaces;
1688         surfacevisframes = ent->model->brushq1.surfacevisframes;
1689         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1690         viewleaf->worldnodeframe = r_framecount;
1691         leafstack[0] = viewleaf;
1692         leafstackpos = 1;
1693         while (leafstackpos)
1694         {
1695                 c_leafs++;
1696                 leaf = leafstack[--leafstackpos];
1697                 leaf->visframe = r_framecount;
1698                 // draw any surfaces bounding this leaf
1699                 if (leaf->nummarksurfaces)
1700                 {
1701                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1702                         {
1703 #if WORLDNODECULLBACKFACES
1704                                 n = *mark++;
1705                                 if (surfacevisframes[n] != r_framecount)
1706                                 {
1707                                         surf = surfaces + n;
1708                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1709                                         {
1710                                                 if ((surf->flags & SURF_PLANEBACK))
1711                                                         surfacevisframes[n] = r_framecount;
1712                                         }
1713                                         else
1714                                         {
1715                                                 if (!(surf->flags & SURF_PLANEBACK))
1716                                                         surfacevisframes[n] = r_framecount;
1717                                         }
1718                                 }
1719 #else
1720                                 surfacevisframes[*mark++] = r_framecount;
1721 #endif
1722                         }
1723                 }
1724                 // follow portals into other leafs
1725                 for (p = leaf->portals;p;p = p->next)
1726                 {
1727                         // LordHavoc: this DotProduct hurts less than a cache miss
1728                         // (which is more likely to happen if backflowing through leafs)
1729                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1730                         {
1731                                 leaf = p->past;
1732                                 if (leaf->worldnodeframe != r_framecount)
1733                                 {
1734                                         leaf->worldnodeframe = r_framecount;
1735                                         // FIXME: R_CullBox is absolute, should be done relative
1736                                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
1737                                                 leafstack[leafstackpos++] = leaf;
1738                                 }
1739                         }
1740                 }
1741         }
1742 }
1743
1744 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1745 {
1746         int j, c, *surfacepvsframes, *mark;
1747         mleaf_t *leaf;
1748         model_t *model;
1749
1750         model = ent->model;
1751         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1752         {
1753                 model->brushq1.pvsframecount++;
1754                 model->brushq1.pvsviewleaf = viewleaf;
1755                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1756                 model->brushq1.pvsleafchain = NULL;
1757                 model->brushq1.pvssurflistlength = 0;
1758                 if (viewleaf)
1759                 {
1760                         surfacepvsframes = model->brushq1.surfacepvsframes;
1761                         for (j = 0, leaf = model->brushq1.data_leafs;j < model->brushq1.num_leafs;j++, leaf++)
1762                         {
1763                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
1764                                 {
1765                                         leaf->pvsframe = model->brushq1.pvsframecount;
1766                                         leaf->pvschain = model->brushq1.pvsleafchain;
1767                                         model->brushq1.pvsleafchain = leaf;
1768                                         // mark surfaces bounding this leaf as visible
1769                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1770                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1771                                 }
1772                         }
1773                         model->brushq1.BuildPVSTextureChains(model);
1774                 }
1775         }
1776 }
1777
1778 void R_WorldVisibility(entity_render_t *ent)
1779 {
1780         vec3_t modelorg;
1781         mleaf_t *viewleaf;
1782
1783         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1784         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1785         R_PVSUpdate(ent, viewleaf);
1786
1787         if (!viewleaf)
1788                 return;
1789
1790         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1791                 R_SurfaceWorldNode (ent);
1792         else
1793                 R_PortalWorldNode (ent, viewleaf);
1794 }
1795
1796 void R_DrawWorld(entity_render_t *ent)
1797 {
1798         if (ent->model == NULL)
1799                 return;
1800         if (!ent->model->brushq1.num_leafs)
1801         {
1802                 if (ent->model->DrawSky)
1803                         ent->model->DrawSky(ent);
1804                 if (ent->model->Draw)
1805                         ent->model->Draw(ent);
1806         }
1807         else
1808         {
1809                 R_PrepareSurfaces(ent);
1810                 R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1811                 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1812                 if (r_drawportals.integer)
1813                         R_DrawPortals(ent);
1814         }
1815 }
1816
1817 void R_Model_Brush_DrawSky(entity_render_t *ent)
1818 {
1819         if (ent->model == NULL)
1820                 return;
1821         if (ent != &cl_entities[0].render)
1822                 R_PrepareBrushModel(ent);
1823         R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1824 }
1825
1826 void R_Model_Brush_Draw(entity_render_t *ent)
1827 {
1828         if (ent->model == NULL)
1829                 return;
1830         c_bmodels++;
1831         if (ent != &cl_entities[0].render)
1832                 R_PrepareBrushModel(ent);
1833         R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1834 }
1835
1836 void R_Model_Brush_DrawShadowVolume (entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1837 {
1838 #if 0
1839         int i;
1840         msurface_t *surf;
1841         float projectdistance, f, temp[3], lightradius2;
1842         if (ent->model == NULL)
1843                 return;
1844         R_Mesh_Matrix(&ent->matrix);
1845         lightradius2 = lightradius * lightradius;
1846         R_UpdateTextureInfo(ent);
1847         projectdistance = lightradius + ent->model->radius;//projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1848         //projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1849         for (i = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;i < ent->model->brushq1.nummodelsurfaces;i++, surf++)
1850         {
1851                 if (surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && surf->flags & SURF_SHADOWCAST)
1852                 {
1853                         f = PlaneDiff(relativelightorigin, surf->plane);
1854                         if (surf->flags & SURF_PLANEBACK)
1855                                 f = -f;
1856                         // draw shadows only for frontfaces and only if they are close
1857                         if (f >= 0.1 && f < lightradius)
1858                         {
1859                                 temp[0] = bound(surf->poly_mins[0], relativelightorigin[0], surf->poly_maxs[0]) - relativelightorigin[0];
1860                                 temp[1] = bound(surf->poly_mins[1], relativelightorigin[1], surf->poly_maxs[1]) - relativelightorigin[1];
1861                                 temp[2] = bound(surf->poly_mins[2], relativelightorigin[2], surf->poly_maxs[2]) - relativelightorigin[2];
1862                                 if (DotProduct(temp, temp) < lightradius2)
1863                                         R_Shadow_VolumeFromSphere(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_vertex3f, surf->mesh.data_element3i, surf->mesh.data_neighbor3i, relativelightorigin, projectdistance, lightradius);
1864                         }
1865                 }
1866         }
1867 #else
1868         int t, leafnum, marksurfnum, trianglenum;
1869         const int *e;
1870         msurface_t *surf;
1871         mleaf_t *leaf;
1872         const qbyte *pvs;
1873         float projectdistance;
1874         const float *v[3];
1875         vec3_t lightmins, lightmaxs;
1876         if (ent->model == NULL)
1877                 return;
1878         R_Mesh_Matrix(&ent->matrix);
1879         R_UpdateTextureInfo(ent);
1880         projectdistance = lightradius + ent->model->radius;//projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1881         lightmins[0] = relativelightorigin[0] - lightradius;
1882         lightmins[1] = relativelightorigin[1] - lightradius;
1883         lightmins[2] = relativelightorigin[2] - lightradius;
1884         lightmaxs[0] = relativelightorigin[0] + lightradius;
1885         lightmaxs[1] = relativelightorigin[1] + lightradius;
1886         lightmaxs[2] = relativelightorigin[2] + lightradius;
1887         /*
1888         R_Shadow_PrepareShadowMark(ent->model->brush.shadowmesh->numtriangles);
1889         maxmarksurfaces = sizeof(surfacelist) / sizeof(surfacelist[0]);
1890         ent->model->brushq1.GetVisible(ent->model, relativelightorigin, lightmins, lightmaxs, 0, NULL, NULL, maxmarkleafs, markleaf, &nummarkleafs);
1891         for (marksurfacenum = 0;marksurfacenum < nummarksurfaces;marksurfacenum++)
1892         {
1893                 surf = marksurface[marksurfacenum];
1894                 if (surf->shadowmark != shadowmarkcount)
1895                 {
1896                         surf->shadowmark = shadowmarkcount;
1897                         if (BoxesOverlap(lightmins, lightmaxs, surf->poly_mins, surf->poly_maxs) && surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && (surf->flags & SURF_SHADOWCAST))
1898                         {
1899                                 for (trianglenum = 0, t = surf->num_firstshadowmeshtriangle, e = ent->model->brush.shadowmesh->element3i + t * 3;trianglenum < surf->mesh.num_triangles;trianglenum++, t++, e += 3)
1900                                 {
1901                                         v[0] = ent->model->brush.shadowmesh->vertex3f + e[0] * 3;
1902                                         v[1] = ent->model->brush.shadowmesh->vertex3f + e[1] * 3;
1903                                         v[2] = ent->model->brush.shadowmesh->vertex3f + e[2] * 3;
1904                                         if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1905                                                 shadowmarklist[numshadowmark++] = t;
1906                                 }
1907                         }
1908                 }
1909         }
1910         */
1911         R_Shadow_PrepareShadowMark(ent->model->brush.shadowmesh->numtriangles);
1912         if (ent->model->brush.GetPVS && (pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin)))
1913         {
1914                 pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
1915                 // FIXME: use BSP recursion in q1bsp as dlights are often small
1916                 for (leafnum = 0, leaf = ent->model->brushq1.data_leafs;leafnum < ent->model->brushq1.num_leafs;leafnum++, leaf++)
1917                 {
1918                         if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && CHECKPVSBIT(pvs, leaf->clusterindex))
1919                         {
1920                                 for (marksurfnum = 0;marksurfnum < leaf->nummarksurfaces;marksurfnum++)
1921                                 {
1922                                         surf = ent->model->brushq1.surfaces + leaf->firstmarksurface[marksurfnum];
1923                                         if (surf->shadowmark != shadowmarkcount)
1924                                         {
1925                                                 surf->shadowmark = shadowmarkcount;
1926                                                 if (BoxesOverlap(lightmins, lightmaxs, surf->poly_mins, surf->poly_maxs) && surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && (surf->flags & SURF_SHADOWCAST))
1927                                                 {
1928                                                         for (trianglenum = 0, t = surf->num_firstshadowmeshtriangle, e = ent->model->brush.shadowmesh->element3i + t * 3;trianglenum < surf->mesh.num_triangles;trianglenum++, t++, e += 3)
1929                                                         {
1930                                                                 v[0] = ent->model->brush.shadowmesh->vertex3f + e[0] * 3;
1931                                                                 v[1] = ent->model->brush.shadowmesh->vertex3f + e[1] * 3;
1932                                                                 v[2] = ent->model->brush.shadowmesh->vertex3f + e[2] * 3;
1933                                                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1934                                                                         shadowmarklist[numshadowmark++] = t;
1935                                                         }
1936                                                 }
1937                                         }
1938                                 }
1939                         }
1940                 }
1941         }
1942         else
1943         {
1944                 for (marksurfnum = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;marksurfnum < ent->model->brushq1.nummodelsurfaces;marksurfnum++, surf++)
1945                 {
1946                         if (BoxesOverlap(lightmins, lightmaxs, surf->poly_mins, surf->poly_maxs) && surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && (surf->flags & SURF_SHADOWCAST))
1947                         {
1948                                 for (trianglenum = 0, t = surf->num_firstshadowmeshtriangle, e = ent->model->brush.shadowmesh->element3i + t * 3;trianglenum < surf->mesh.num_triangles;trianglenum++, t++, e += 3)
1949                                 {
1950                                         v[0] = ent->model->brush.shadowmesh->vertex3f + e[0] * 3;
1951                                         v[1] = ent->model->brush.shadowmesh->vertex3f + e[1] * 3;
1952                                         v[2] = ent->model->brush.shadowmesh->vertex3f + e[2] * 3;
1953                                         if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1954                                                 shadowmarklist[numshadowmark++] = t;
1955                                 }
1956                         }
1957                 }
1958         }
1959         R_Shadow_VolumeFromList(ent->model->brush.shadowmesh->numverts, ent->model->brush.shadowmesh->numtriangles, ent->model->brush.shadowmesh->vertex3f, ent->model->brush.shadowmesh->element3i, ent->model->brush.shadowmesh->neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
1960 #endif
1961 }
1962
1963 void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap)
1964 {
1965         int leafnum, marksurfnum;
1966         msurface_t *surf;
1967         mleaf_t *leaf;
1968         const qbyte *pvs;
1969         texture_t *t;
1970         float lightmins[3], lightmaxs[3];
1971         if (ent->model == NULL)
1972                 return;
1973         R_Mesh_Matrix(&ent->matrix);
1974         lightmins[0] = relativelightorigin[0] - lightradius;
1975         lightmins[1] = relativelightorigin[1] - lightradius;
1976         lightmins[2] = relativelightorigin[2] - lightradius;
1977         lightmaxs[0] = relativelightorigin[0] + lightradius;
1978         lightmaxs[1] = relativelightorigin[1] + lightradius;
1979         lightmaxs[2] = relativelightorigin[2] + lightradius;
1980         R_UpdateTextureInfo(ent);
1981         shadowmarkcount++;
1982         if (ent->model->brush.GetPVS && (pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin)))
1983         {
1984                 pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
1985                 for (leafnum = 0, leaf = ent->model->brushq1.data_leafs;leafnum < ent->model->brushq1.num_leafs;leafnum++, leaf++)
1986                 {
1987                         if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && CHECKPVSBIT(pvs, leaf->clusterindex))
1988                         {
1989                                 for (marksurfnum = 0;marksurfnum < leaf->nummarksurfaces;marksurfnum++)
1990                                 {
1991                                         surf = ent->model->brushq1.surfaces + leaf->firstmarksurface[marksurfnum];
1992                                         if (surf->shadowmark != shadowmarkcount)
1993                                         {
1994                                                 surf->shadowmark = shadowmarkcount;
1995                                                 if (BoxesOverlap(lightmins, lightmaxs, surf->poly_mins, surf->poly_maxs) && (ent != &cl_entities[0].render || surf->visframe == r_framecount))
1996                                                 {
1997                                                         t = surf->texinfo->texture->currentframe;
1998                                                         if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1999                                                         {
2000                                                                 R_Shadow_DiffuseLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, lightcubemap);
2001                                                                 R_Shadow_SpecularLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, lightcubemap);
2002                                                         }
2003                                                 }
2004                                         }
2005                                 }
2006                         }
2007                 }
2008         }
2009         else
2010         {
2011                 for (marksurfnum = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;marksurfnum < ent->model->brushq1.nummodelsurfaces;marksurfnum++, surf++)
2012                 {
2013                         if (BoxesOverlap(lightmins, lightmaxs, surf->poly_mins, surf->poly_maxs) && (ent != &cl_entities[0].render || surf->visframe == r_framecount))
2014                         {
2015                                 t = surf->texinfo->texture->currentframe;
2016                                 if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
2017                                 {
2018                                         R_Shadow_DiffuseLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, lightcubemap);
2019                                         R_Shadow_SpecularLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, lightcubemap);
2020                                 }
2021                         }
2022                 }
2023         }
2024 }
2025
2026 void R_DrawCollisionBrush(colbrushf_t *brush)
2027 {
2028         int i;
2029         rmeshstate_t m;
2030         memset(&m, 0, sizeof(m));
2031         m.pointer_vertex = brush->points->v;
2032         R_Mesh_State(&m);
2033         i = ((int)brush) / sizeof(colbrushf_t);
2034         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
2035         GL_LockArrays(0, brush->numpoints);
2036         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
2037         GL_LockArrays(0, 0);
2038 }
2039
2040 void R_Q3BSP_DrawCollisionFace(entity_render_t *ent, q3mface_t *face)
2041 {
2042         int i;
2043         rmeshstate_t m;
2044         if (!face->num_collisiontriangles)
2045                 return;
2046         memset(&m, 0, sizeof(m));
2047         m.pointer_vertex = face->data_collisionvertex3f;
2048         R_Mesh_State(&m);
2049         i = ((int)face) / sizeof(q3mface_t);
2050         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
2051         GL_LockArrays(0, face->num_collisionvertices);
2052         R_Mesh_Draw(face->num_collisionvertices, face->num_collisiontriangles, face->data_collisionelement3i);
2053         GL_LockArrays(0, 0);
2054 }
2055
2056 void R_Q3BSP_DrawSkyFace(entity_render_t *ent, q3mface_t *face)
2057 {
2058         rmeshstate_t m;
2059         if (!face->num_triangles)
2060                 return;
2061         c_faces++;
2062         if (skyrendernow)
2063         {
2064                 skyrendernow = false;
2065                 if (skyrendermasked)
2066                         R_Sky();
2067         }
2068
2069         R_Mesh_Matrix(&ent->matrix);
2070
2071         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
2072         if (skyrendermasked)
2073         {
2074                 // depth-only (masking)
2075                 GL_ColorMask(0,0,0,0);
2076                 // just to make sure that braindead drivers don't draw anything
2077                 // despite that colormask...
2078                 GL_BlendFunc(GL_ZERO, GL_ONE);
2079         }
2080         else
2081         {
2082                 // fog sky
2083                 GL_BlendFunc(GL_ONE, GL_ZERO);
2084         }
2085         GL_DepthMask(true);
2086         GL_DepthTest(true);
2087
2088         memset(&m, 0, sizeof(m));
2089         m.pointer_vertex = face->data_vertex3f;
2090         R_Mesh_State(&m);
2091
2092         GL_LockArrays(0, face->num_vertices);
2093         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2094         GL_LockArrays(0, 0);
2095         GL_ColorMask(1,1,1,1);
2096 }
2097
2098 void R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(entity_render_t *ent, q3mface_t *face)
2099 {
2100         rmeshstate_t m;
2101         memset(&m, 0, sizeof(m));
2102         GL_BlendFunc(GL_ONE, GL_ZERO);
2103         GL_DepthMask(true);
2104         GL_DepthTest(true);
2105         if (face->texture->skin.glow)
2106         {
2107                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
2108                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2109                 GL_Color(1, 1, 1, 1);
2110         }
2111         else
2112                 GL_Color(0, 0, 0, 1);
2113         m.pointer_vertex = face->data_vertex3f;
2114         R_Mesh_State(&m);
2115         GL_LockArrays(0, face->num_vertices);
2116         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2117         GL_LockArrays(0, 0);
2118 }
2119
2120 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(entity_render_t *ent, q3mface_t *face)
2121 {
2122         rmeshstate_t m;
2123         memset(&m, 0, sizeof(m));
2124         GL_BlendFunc(GL_ONE, GL_ZERO);
2125         GL_DepthMask(true);
2126         GL_DepthTest(true);
2127         m.tex[0] = R_GetTexture(face->texture->skin.base);
2128         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2129         m.tex[1] = R_GetTexture(face->lightmaptexture);
2130         m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
2131         m.texrgbscale[1] = 2;
2132         GL_Color(1, 1, 1, 1);
2133         m.pointer_vertex = face->data_vertex3f;
2134         R_Mesh_State(&m);
2135         GL_LockArrays(0, face->num_vertices);
2136         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2137         GL_LockArrays(0, 0);
2138 }
2139
2140 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(entity_render_t *ent, q3mface_t *face)
2141 {
2142         rmeshstate_t m;
2143         memset(&m, 0, sizeof(m));
2144         GL_BlendFunc(GL_ONE, GL_ZERO);
2145         GL_DepthMask(true);
2146         GL_DepthTest(true);
2147         m.tex[0] = R_GetTexture(face->texture->skin.base);
2148         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2149         GL_Color(1, 1, 1, 1);
2150         m.pointer_vertex = face->data_vertex3f;
2151         R_Mesh_State(&m);
2152         GL_LockArrays(0, face->num_vertices);
2153         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2154         GL_LockArrays(0, 0);
2155 }
2156
2157 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(entity_render_t *ent, q3mface_t *face)
2158 {
2159         rmeshstate_t m;
2160         memset(&m, 0, sizeof(m));
2161         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
2162         GL_DepthMask(false);
2163         GL_DepthTest(true);
2164         m.tex[0] = R_GetTexture(face->lightmaptexture);
2165         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2166         GL_Color(1, 1, 1, 1);
2167         m.pointer_vertex = face->data_vertex3f;
2168         R_Mesh_State(&m);
2169         GL_LockArrays(0, face->num_vertices);
2170         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2171         GL_LockArrays(0, 0);
2172 }
2173
2174 void R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(entity_render_t *ent, q3mface_t *face)
2175 {
2176         rmeshstate_t m;
2177         memset(&m, 0, sizeof(m));
2178         GL_BlendFunc(GL_ONE, GL_ZERO);
2179         GL_DepthMask(true);
2180         GL_DepthTest(true);
2181         m.tex[0] = R_GetTexture(face->lightmaptexture);
2182         m.pointer_texcoord[0] = face->data_texcoordlightmap2f;
2183         if (r_shadow_realtime_world.integer)
2184                 GL_Color(r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, r_shadow_realtime_world_lightmaps.value, 1);
2185         else
2186                 GL_Color(1, 1, 1, 1);
2187         m.pointer_vertex = face->data_vertex3f;
2188         R_Mesh_State(&m);
2189         GL_LockArrays(0, face->num_vertices);
2190         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2191         GL_LockArrays(0, 0);
2192 }
2193
2194 void R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(entity_render_t *ent, q3mface_t *face)
2195 {
2196         rmeshstate_t m;
2197         memset(&m, 0, sizeof(m));
2198         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2199         GL_DepthMask(false);
2200         GL_DepthTest(true);
2201         if (face->texture->skin.glow)
2202         {
2203                 m.tex[0] = R_GetTexture(face->texture->skin.glow);
2204                 m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2205                 GL_Color(1, 1, 1, 1);
2206         }
2207         else
2208                 GL_Color(0, 0, 0, 1);
2209         m.pointer_vertex = face->data_vertex3f;
2210         R_Mesh_State(&m);
2211         GL_LockArrays(0, face->num_vertices);
2212         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2213         GL_LockArrays(0, 0);
2214 }
2215
2216 void R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(entity_render_t *ent, q3mface_t *face)
2217 {
2218         int i;
2219         float mul;
2220         rmeshstate_t m;
2221         memset(&m, 0, sizeof(m));
2222         GL_BlendFunc(GL_ONE, GL_ZERO);
2223         GL_DepthMask(true);
2224         GL_DepthTest(true);
2225         m.tex[0] = R_GetTexture(face->texture->skin.base);
2226         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2227         mul = 2.0f;
2228         if (r_shadow_realtime_world.integer && r_shadow_realtime_world_lightmaps.value != 1)
2229                 mul *= r_shadow_realtime_world_lightmaps.value;
2230         if (mul == 2 && gl_combine.integer)
2231         {
2232                 m.texrgbscale[0] = 2;
2233                 m.pointer_color = face->data_color4f;
2234         }
2235         else if (mul == 1)
2236                 m.pointer_color = face->data_color4f;
2237         else
2238         {
2239                 for (i = 0;i < face->num_vertices;i++)
2240                 {
2241                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * mul;
2242                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * mul;
2243                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * mul;
2244                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2245                 }
2246                 m.pointer_color = varray_color4f;
2247         }
2248         m.pointer_vertex = face->data_vertex3f;
2249         R_Mesh_State(&m);
2250         GL_LockArrays(0, face->num_vertices);
2251         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2252         GL_LockArrays(0, 0);
2253 }
2254
2255 void R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(entity_render_t *ent, q3mface_t *face)
2256 {
2257         int i;
2258         float mul;
2259         rmeshstate_t m;
2260         memset(&m, 0, sizeof(m));
2261         GL_BlendFunc(GL_ONE, GL_ZERO);
2262         GL_DepthMask(true);
2263         GL_DepthTest(true);
2264         mul = 2.0f;
2265         if (r_shadow_realtime_world.integer && r_shadow_realtime_world_lightmaps.value != 1)
2266                 mul *= r_shadow_realtime_world_lightmaps.value;
2267         if (mul == 1)
2268                 m.pointer_color = face->data_color4f;
2269         else
2270         {
2271                 for (i = 0;i < face->num_vertices;i++)
2272                 {
2273                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * 2.0f;
2274                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * 2.0f;
2275                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * 2.0f;
2276                         varray_color4f[i*4+3] = face->data_color4f[i*4+3];
2277                 }
2278                 m.pointer_color = varray_color4f;
2279         }
2280         m.pointer_vertex = face->data_vertex3f;
2281         R_Mesh_State(&m);
2282         GL_LockArrays(0, face->num_vertices);
2283         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2284         GL_LockArrays(0, 0);
2285 }
2286
2287 void R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(entity_render_t *ent, q3mface_t *face)
2288 {
2289         rmeshstate_t m;
2290         memset(&m, 0, sizeof(m));
2291         GL_BlendFunc(GL_ONE, GL_ONE);
2292         GL_DepthMask(true);
2293         GL_DepthTest(true);
2294         m.tex[0] = R_GetTexture(face->texture->skin.base);
2295         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2296         GL_Color(r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), r_ambient.value * (1.0f / 128.0f), 1);
2297         m.pointer_vertex = face->data_vertex3f;
2298         R_Mesh_State(&m);
2299         GL_LockArrays(0, face->num_vertices);
2300         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2301         GL_LockArrays(0, 0);
2302 }
2303
2304 void R_Q3BSP_DrawFace_TransparentCallback(const void *voident, int facenumber)
2305 {
2306         const entity_render_t *ent = voident;
2307         q3mface_t *face = ent->model->brushq3.data_faces + facenumber;
2308         rmeshstate_t m;
2309         R_Mesh_Matrix(&ent->matrix);
2310         memset(&m, 0, sizeof(m));
2311         if (ent->effects & EF_ADDITIVE)
2312                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2313         else
2314                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2315         GL_DepthMask(false);
2316         GL_DepthTest(true);
2317         m.tex[0] = R_GetTexture(face->texture->skin.base);
2318         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
2319         // LordHavoc: quake3 was not able to do this; lit transparent surfaces
2320         if (gl_combine.integer)
2321         {
2322                 m.texrgbscale[0] = 2;
2323                 if (r_textureunits.integer >= 2)
2324                 {
2325                         m.tex[1] = R_GetTexture(face->lightmaptexture);
2326                         m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
2327                         GL_Color(1, 1, 1, ent->alpha);
2328                 }
2329                 else
2330                 {
2331                         if (ent->alpha == 1)
2332                                 m.pointer_color = face->data_color4f;
2333                         else
2334                         {
2335                                 int i;
2336                                 for (i = 0;i < face->num_vertices;i++)
2337                                 {
2338                                         varray_color4f[i*4+0] = face->data_color4f[i*4+0];
2339                                         varray_color4f[i*4+1] = face->data_color4f[i*4+1];
2340                                         varray_color4f[i*4+2] = face->data_color4f[i*4+2];
2341                                         varray_color4f[i*4+3] = face->data_color4f[i*4+3] * ent->alpha;
2342                                 }
2343                                 m.pointer_color = varray_color4f;
2344                         }
2345                 }
2346         }
2347         else
2348         {
2349                 int i;
2350                 for (i = 0;i < face->num_vertices;i++)
2351                 {
2352                         varray_color4f[i*4+0] = face->data_color4f[i*4+0] * 2.0f;
2353                         varray_color4f[i*4+1] = face->data_color4f[i*4+1] * 2.0f;
2354                         varray_color4f[i*4+2] = face->data_color4f[i*4+2] * 2.0f;
2355                         varray_color4f[i*4+3] = face->data_color4f[i*4+3] * ent->alpha;
2356                 }
2357                 m.pointer_color = varray_color4f;
2358         }
2359         m.pointer_vertex = face->data_vertex3f;
2360         R_Mesh_State(&m);
2361         qglDisable(GL_CULL_FACE);
2362         GL_LockArrays(0, face->num_vertices);
2363         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
2364         GL_LockArrays(0, 0);
2365         qglEnable(GL_CULL_FACE);
2366 }
2367
2368 void R_Q3BSP_DrawFace(entity_render_t *ent, q3mface_t *face)
2369 {
2370         if (!face->num_triangles)
2371                 return;
2372         if (face->texture->surfaceparms)
2373         {
2374                 if (face->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW))
2375                         return;
2376         }
2377         c_faces++;
2378         face->visframe = r_framecount;
2379         if ((face->texture->surfaceparms & Q3SURFACEPARM_TRANS) || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
2380         {
2381                 vec3_t facecenter, center;
2382                 facecenter[0] = (face->mins[0] + face->maxs[0]) * 0.5f;
2383                 facecenter[1] = (face->mins[1] + face->maxs[1]) * 0.5f;
2384                 facecenter[2] = (face->mins[2] + face->maxs[2]) * 0.5f;
2385                 Matrix4x4_Transform(&ent->matrix, facecenter, center);
2386                 R_MeshQueue_AddTransparent(center, R_Q3BSP_DrawFace_TransparentCallback, ent, face - ent->model->brushq3.data_faces);
2387                 return;
2388         }
2389         R_Mesh_Matrix(&ent->matrix);
2390         if (r_shadow_realtime_world.integer && r_shadow_realtime_world_lightmaps.value <= 0)
2391                 R_Q3BSP_DrawFace_OpaqueWall_Pass_OpaqueGlow(ent, face);
2392         else if ((ent->effects & EF_FULLBRIGHT) || r_fullbright.integer)
2393         {
2394                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2395                 if (face->texture->skin.glow)
2396                         R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2397         }
2398         else if (face->lightmaptexture)
2399         {
2400                 if (gl_lightmaps.integer)
2401                         R_Q3BSP_DrawFace_OpaqueWall_Pass_LightmapOnly(ent, face);
2402                 else
2403                 {
2404                         if (r_textureunits.integer >= 2 && gl_combine.integer)
2405                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureLightmapCombine(ent, face);
2406                         else
2407                         {
2408                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Texture(ent, face);
2409                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Lightmap(ent, face);
2410                         }
2411                         if (face->texture->skin.glow)
2412                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2413                 }
2414         }
2415         else
2416         {
2417                 if (gl_lightmaps.integer)
2418                         R_Q3BSP_DrawFace_OpaqueWall_Pass_VertexOnly(ent, face);
2419                 else
2420                 {
2421                         R_Q3BSP_DrawFace_OpaqueWall_Pass_TextureVertex(ent, face);
2422                         if (face->texture->skin.glow)
2423                                 R_Q3BSP_DrawFace_OpaqueWall_Pass_Glow(ent, face);
2424                 }
2425         }
2426         if (r_ambient.value)
2427                 R_Q3BSP_DrawFace_OpaqueWall_Pass_AddTextureAmbient(ent, face);
2428 }
2429
2430 void R_Q3BSP_RecursiveWorldNode(q3mnode_t *node)
2431 {
2432         int i;
2433         q3mleaf_t *leaf;
2434         for (;;)
2435         {
2436                 if (R_CullBox(node->mins, node->maxs))
2437                         return;
2438                 if (!node->plane)
2439                         break;
2440                 c_nodes++;
2441                 R_Q3BSP_RecursiveWorldNode(node->children[0]);
2442                 node = node->children[1];
2443         }
2444         leaf = (q3mleaf_t *)node;
2445         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2446         {
2447                 c_leafs++;
2448                 for (i = 0;i < leaf->numleaffaces;i++)
2449                         leaf->firstleafface[i]->visframe = r_framecount;
2450         }
2451 }
2452
2453 // FIXME: num_leafs needs to be recalculated at load time to include only
2454 // node-referenced leafs, as some maps are incorrectly compiled with leafs for
2455 // the submodels (which would render the submodels occasionally, as part of
2456 // the world - not good)
2457 void R_Q3BSP_MarkLeafPVS(void)
2458 {
2459         int i, j;
2460         q3mleaf_t *leaf;
2461         for (j = 0, leaf = cl.worldmodel->brushq3.data_leafs;j < cl.worldmodel->brushq3.num_leafs;j++, leaf++)
2462         {
2463                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex))
2464                 {
2465                         c_leafs++;
2466                         for (i = 0;i < leaf->numleaffaces;i++)
2467                                 leaf->firstleafface[i]->visframe = r_framecount;
2468                 }
2469         }
2470 }
2471
2472 static int r_q3bsp_framecount = -1;
2473
2474 void R_Q3BSP_DrawSky(entity_render_t *ent)
2475 {
2476         int i;
2477         q3mface_t *face;
2478         vec3_t modelorg;
2479         model_t *model;
2480         qbyte *pvs;
2481         R_Mesh_Matrix(&ent->matrix);
2482         model = ent->model;
2483         if (r_drawcollisionbrushes.integer < 2)
2484         {
2485                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2486                 if (ent == &cl_entities[0].render && model->brush.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2487                 {
2488                         if (r_q3bsp_framecount != r_framecount)
2489                         {
2490                                 r_q3bsp_framecount = r_framecount;
2491                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2492                                 //R_Q3BSP_MarkLeafPVS();
2493                         }
2494                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2495                                 if (face->visframe == r_framecount && (face->texture->surfaceflags & Q3SURFACEFLAG_SKY) && !R_CullBox(face->mins, face->maxs))
2496                                         R_Q3BSP_DrawSkyFace(ent, face);
2497                 }
2498                 else
2499                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2500                                 if ((face->texture->surfaceflags & Q3SURFACEFLAG_SKY))
2501                                         R_Q3BSP_DrawSkyFace(ent, face);
2502         }
2503 }
2504
2505 void R_Q3BSP_Draw(entity_render_t *ent)
2506 {
2507         int i;
2508         q3mface_t *face;
2509         vec3_t modelorg;
2510         model_t *model;
2511         qbyte *pvs;
2512         R_Mesh_Matrix(&ent->matrix);
2513         model = ent->model;
2514         if (r_drawcollisionbrushes.integer < 2)
2515         {
2516                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2517                 if (ent == &cl_entities[0].render && model->brush.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2518                 {
2519                         if (r_q3bsp_framecount != r_framecount)
2520                         {
2521                                 r_q3bsp_framecount = r_framecount;
2522                                 R_Q3BSP_RecursiveWorldNode(model->brushq3.data_nodes);
2523                                 //R_Q3BSP_MarkLeafPVS();
2524                         }
2525                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2526                                 if (face->visframe == r_framecount && !R_CullBox(face->mins, face->maxs))
2527                                         R_Q3BSP_DrawFace(ent, face);
2528                 }
2529                 else
2530                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2531                                 R_Q3BSP_DrawFace(ent, face);
2532         }
2533         if (r_drawcollisionbrushes.integer >= 1)
2534         {
2535                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2536                 GL_DepthMask(false);
2537                 GL_DepthTest(true);
2538                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
2539                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
2540                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
2541                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
2542                 for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2543                         if (face->num_collisiontriangles)
2544                                 R_Q3BSP_DrawCollisionFace(ent, face);
2545                 qglPolygonOffset(0, 0);
2546         }
2547 }
2548
2549 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
2550 {
2551         int j, t, leafnum, marksurfnum;
2552         const int *e;
2553         const qbyte *pvs;
2554         const float *v[3];
2555         q3mface_t *face;
2556         q3mleaf_t *leaf;
2557         vec3_t modelorg, lightmins, lightmaxs;
2558         model_t *model;
2559         float projectdistance;
2560         projectdistance = lightradius + ent->model->radius;//projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
2561         if (r_drawcollisionbrushes.integer < 2)
2562         {
2563                 model = ent->model;
2564                 R_Mesh_Matrix(&ent->matrix);
2565                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2566                 lightmins[0] = relativelightorigin[0] - lightradius;
2567                 lightmins[1] = relativelightorigin[1] - lightradius;
2568                 lightmins[2] = relativelightorigin[2] - lightradius;
2569                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2570                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2571                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2572                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
2573                 if (ent->model->brush.GetPVS && (pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin)))
2574                 {
2575                         for (leafnum = 0, leaf = ent->model->brushq3.data_leafs;leafnum < ent->model->brushq3.num_leafs;leafnum++, leaf++)
2576                         {
2577                                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && CHECKPVSBIT(pvs, leaf->clusterindex))
2578                                 {
2579                                         for (marksurfnum = 0;marksurfnum < leaf->numleaffaces;marksurfnum++)
2580                                         {
2581                                                 face = leaf->firstleafface[marksurfnum];
2582                                                 if (face->shadowmark != shadowmarkcount)
2583                                                 {
2584                                                         face->shadowmark = shadowmarkcount;
2585                                                         if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2586                                                         {
2587                                                                 for (j = 0, t = face->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < face->num_triangles;j++, t++, e += 3)
2588                                                                 {
2589                                                                         v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2590                                                                         v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2591                                                                         v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2592                                                                         if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2593                                                                                 shadowmarklist[numshadowmark++] = t;
2594                                                                 }
2595                                                         }
2596                                                 }
2597                                         }
2598                                 }
2599                         }
2600                 }
2601                 else
2602                 {
2603                         for (marksurfnum = 0, face = model->brushq3.data_thismodel->firstface;marksurfnum < model->brushq3.data_thismodel->numfaces;marksurfnum++, face++)
2604                         {
2605                                 if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2606                                 {
2607                                         for (j = 0, t = face->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;j < face->num_triangles;j++, t++, e += 3)
2608                                         {
2609                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2610                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2611                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2612                                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2613                                                         shadowmarklist[numshadowmark++] = t;
2614                                         }
2615                                 }
2616                         }
2617                 }
2618                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
2619         }
2620 }
2621
2622 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_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap)
2623 {
2624         if ((face->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) || !face->num_triangles)
2625                 return;
2626         R_Shadow_DiffuseLighting(face->num_vertices, face->num_triangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.base, face->texture->skin.nmap, lightcubemap);
2627         R_Shadow_SpecularLighting(face->num_vertices, face->num_triangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.gloss, face->texture->skin.nmap, lightcubemap);
2628 }
2629
2630 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap)
2631 {
2632         int leafnum, marksurfnum;
2633         const qbyte *pvs;
2634         q3mface_t *face;
2635         q3mleaf_t *leaf;
2636         vec3_t modelorg, lightmins, lightmaxs;
2637         model_t *model;
2638         if (r_drawcollisionbrushes.integer < 2)
2639         {
2640                 model = ent->model;
2641                 R_Mesh_Matrix(&ent->matrix);
2642                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2643                 lightmins[0] = relativelightorigin[0] - lightradius;
2644                 lightmins[1] = relativelightorigin[1] - lightradius;
2645                 lightmins[2] = relativelightorigin[2] - lightradius;
2646                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2647                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2648                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2649
2650                 if (ent->model->brush.GetPVS && (pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin)))
2651                 {
2652                         pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
2653                         for (leafnum = 0, leaf = ent->model->brushq3.data_leafs;leafnum < ent->model->brushq3.num_leafs;leafnum++, leaf++)
2654                         {
2655                                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && CHECKPVSBIT(pvs, leaf->clusterindex))
2656                                 {
2657                                         for (marksurfnum = 0;marksurfnum < leaf->numleaffaces;marksurfnum++)
2658                                         {
2659                                                 face = leaf->firstleafface[marksurfnum];
2660                                                 if (face->shadowmark != shadowmarkcount)
2661                                                 {
2662                                                         face->shadowmark = shadowmarkcount;
2663                                                         if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs) && (ent != &cl_entities[0].render || face->visframe == r_framecount))
2664                                                                 R_Q3BSP_DrawFaceLight(ent, face, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, lightcubemap);
2665                                                 }
2666                                         }
2667                                 }
2668                         }
2669                 }
2670                 else
2671                 {
2672                         for (marksurfnum = 0, face = model->brushq3.data_thismodel->firstface;marksurfnum < model->brushq3.data_thismodel->numfaces;marksurfnum++, face++)
2673                                 if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs) && (ent != &cl_entities[0].render || face->visframe == r_framecount))
2674                                         R_Q3BSP_DrawFaceLight(ent, face, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, lightcubemap);
2675                 }
2676         }
2677 }
2678
2679 static void gl_surf_start(void)
2680 {
2681 }
2682
2683 static void gl_surf_shutdown(void)
2684 {
2685 }
2686
2687 static void gl_surf_newmap(void)
2688 {
2689 }
2690
2691 void GL_Surf_Init(void)
2692 {
2693         int i;
2694         dlightdivtable[0] = 4194304;
2695         for (i = 1;i < 32768;i++)
2696                 dlightdivtable[i] = 4194304 / (i << 7);
2697
2698         Cvar_RegisterVariable(&r_ambient);
2699         Cvar_RegisterVariable(&r_drawportals);
2700         Cvar_RegisterVariable(&r_testvis);
2701         Cvar_RegisterVariable(&r_floatbuildlightmap);
2702         Cvar_RegisterVariable(&r_detailtextures);
2703         Cvar_RegisterVariable(&r_surfaceworldnode);
2704         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
2705         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2706         Cvar_RegisterVariable(&gl_lightmaps);
2707
2708         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2709 }
2710