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
  24 #define MAX_LIGHTMAP_SIZE 256
  25
  26 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  27 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  28
  29 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  30
  31 cvar_t r_ambient = {0, "r_ambient", "0"};
  32 cvar_t r_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
  33 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
  34 //cvar_t r_drawportals = {0, "r_drawportals", "0"};
  35 cvar_t r_testvis = {0, "r_testvis", "0"};
  36 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
  37 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  38 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
  39 cvar_t r_cullsurface = {0, "r_cullsurface", "0"};
  40
  41 static int dlightdivtable[32768];
  42
  43 // variables used by R_PVSUpdate
  44 int r_pvsframecount = 0;
  45 mleaf_t *r_pvsviewleaf = NULL;
  46 int r_pvsviewleafnovis = 0;
  47 msurface_t *r_pvsfirstsurface = NULL;
  48
  49 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  50 {
  51         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract;
  52         unsigned int *bl;
  53         float dist, impact[3], local[3];
  54
  55         // LordHavoc: use 64bit integer...  shame it's not very standardized...
  56 #if _MSC_VER || __BORLANDC__
  57         __int64     k;
  58 #else
  59         long long   k;
  60 #endif
  61
  62         lit = false;
  63
  64         smax = (surf->extents[0] >> 4) + 1;
  65         tmax = (surf->extents[1] >> 4) + 1;
  66         smax3 = smax * 3;
  67
  68         for (lnum = 0; lnum < r_numdlights; lnum++)
  69         {
  70                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  71                         continue;                                       // not lit by this light
  72
  73                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
  74                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  75
  76                 // for comparisons to minimum acceptable light
  77                 // compensate for LIGHTOFFSET
  78                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  79
  80                 dist2 = dist * dist;
  81                 dist2 += LIGHTOFFSET;
  82                 if (dist2 >= maxdist)
  83                         continue;
  84
  85                 if (surf->plane->type < 3)
  86                 {
  87                         VectorCopy(local, impact);
  88                         impact[surf->plane->type] -= dist;
  89                 }
  90                 else
  91                 {
  92                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  93                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  94                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  95                 }
  96
  97                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  98                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  99
 100                 s = bound(0, impacts, smax * 16) - impacts;
 101                 t = bound(0, impactt, tmax * 16) - impactt;
 102                 i = s * s + t * t + dist2;
 103                 if (i > maxdist)
 104                         continue;
 105
 106                 // reduce calculations
 107                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 108                         sdtable[s] = i * i + dist2;
 109
 110                 maxdist3 = maxdist - dist2;
 111
 112                 // convert to 8.8 blocklights format
 113                 red = r_dlight[lnum].light[0];
 114                 green = r_dlight[lnum].light[1];
 115                 blue = r_dlight[lnum].light[2];
 116                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 117                 bl = intblocklights;
 118
 119                 i = impactt;
 120                 for (t = 0;t < tmax;t++, i -= 16)
 121                 {
 122                         td = i * i;
 123                         // make sure some part of it is visible on this line
 124                         if (td < maxdist3)
 125                         {
 126                                 maxdist2 = maxdist - td;
 127                                 for (s = 0;s < smax;s++)
 128                                 {
 129                                         if (sdtable[s] < maxdist2)
 130                                         {
 131                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 132                                                 if (k > 0)
 133                                                 {
 134                                                         bl[0] += (red   * k) >> 7;
 135                                                         bl[1] += (green * k) >> 7;
 136                                                         bl[2] += (blue  * k) >> 7;
 137                                                         lit = true;
 138                                                 }
 139                                         }
 140                                         bl += 3;
 141                                 }
 142                         }
 143                         else // skip line
 144                                 bl += smax3;
 145                 }
 146         }
 147         return lit;
 148 }
 149
 150 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 151 {
 152         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 153         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 154
 155         lit = false;
 156
 157         smax = (surf->extents[0] >> 4) + 1;
 158         tmax = (surf->extents[1] >> 4) + 1;
 159         smax3 = smax * 3;
 160
 161         for (lnum = 0; lnum < r_numdlights; lnum++)
 162         {
 163                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 164                         continue;                                       // not lit by this light
 165
 166                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
 167                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 168
 169                 // for comparisons to minimum acceptable light
 170                 // compensate for LIGHTOFFSET
 171                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 172
 173                 dist2 = dist * dist;
 174                 dist2 += LIGHTOFFSET;
 175                 if (dist2 >= maxdist)
 176                         continue;
 177
 178                 if (surf->plane->type < 3)
 179                 {
 180                         VectorCopy(local, impact);
 181                         impact[surf->plane->type] -= dist;
 182                 }
 183                 else
 184                 {
 185                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 186                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 187                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 188                 }
 189
 190                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 191                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 192
 193                 td = bound(0, impacts, smax * 16) - impacts;
 194                 td1 = bound(0, impactt, tmax * 16) - impactt;
 195                 td = td * td + td1 * td1 + dist2;
 196                 if (td > maxdist)
 197                         continue;
 198
 199                 // reduce calculations
 200                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 201                         sdtable[s] = td1 * td1 + dist2;
 202
 203                 maxdist3 = maxdist - dist2;
 204
 205                 // convert to 8.8 blocklights format
 206                 red = r_dlight[lnum].light[0];
 207                 green = r_dlight[lnum].light[1];
 208                 blue = r_dlight[lnum].light[2];
 209                 subtract = r_dlight[lnum].subtract * 32768.0f;
 210                 bl = floatblocklights;
 211
 212                 td1 = impactt;
 213                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 214                 {
 215                         td = td1 * td1;
 216                         // make sure some part of it is visible on this line
 217                         if (td < maxdist3)
 218                         {
 219                                 maxdist2 = maxdist - td;
 220                                 for (s = 0;s < smax;s++)
 221                                 {
 222                                         if (sdtable[s] < maxdist2)
 223                                         {
 224                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 225                                                 bl[0] += red   * k;
 226                                                 bl[1] += green * k;
 227                                                 bl[2] += blue  * k;
 228                                                 lit = true;
 229                                         }
 230                                         bl += 3;
 231                                 }
 232                         }
 233                         else // skip line
 234                                 bl += smax3;
 235                 }
 236         }
 237         return lit;
 238 }
 239
 240 /*
 241 ===============
 242 R_BuildLightMap
 243
 244 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 245 ===============
 246 */
 247 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf, int dlightchanged)
 248 {
 249         if (!r_floatbuildlightmap.integer)
 250         {
 251                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 252                 unsigned int *bl, scale;
 253                 qbyte *lightmap, *out, *stain;
 254
 255                 // update cached lighting info
 256                 surf->cached_dlight = 0;
 257                 surf->cached_lightscalebit = lightscalebit;
 258                 surf->cached_ambient = r_ambient.value;
 259                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 260                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 261                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 262                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 263
 264                 smax = (surf->extents[0]>>4)+1;
 265                 tmax = (surf->extents[1]>>4)+1;
 266                 size = smax*tmax;
 267                 size3 = size*3;
 268                 lightmap = surf->samples;
 269
 270         // set to full bright if no light data
 271                 bl = intblocklights;
 272                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
 273                 {
 274                         for (i = 0;i < size3;i++)
 275                                 bl[i] = 255*256;
 276                 }
 277                 else
 278                 {
 279         // clear to no light
 280                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 281                         if (j)
 282                         {
 283                                 for (i = 0;i < size3;i++)
 284                                         *bl++ = j;
 285                         }
 286                         else
 287                                 memset(bl, 0, size*3*sizeof(unsigned int));
 288
 289                         if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 290                         {
 291                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 292                                 if (surf->cached_dlight)
 293                                         c_light_polys++;
 294                                 else if (dlightchanged)
 295                                         return; // don't upload if only updating dlights and none mattered
 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                 // deal with lightmap brightness scale
 312                 shift = 7 + lightscalebit + 8;
 313                 if (ent->model->lightmaprgba)
 314                 {
 315                         stride = (surf->lightmaptexturestride - smax) * 4;
 316                         for (i = 0;i < tmax;i++, out += stride)
 317                         {
 318                                 for (j = 0;j < smax;j++)
 319                                 {
 320                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 321                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 322                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 323                                         *out++ = 255;
 324                                 }
 325                         }
 326                 }
 327                 else
 328                 {
 329                         stride = (surf->lightmaptexturestride - smax) * 3;
 330                         for (i = 0;i < tmax;i++, out += stride)
 331                         {
 332                                 for (j = 0;j < smax;j++)
 333                                 {
 334                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 335                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 336                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 337                                 }
 338                         }
 339                 }
 340
 341                 R_UpdateTexture(surf->lightmaptexture, templight);
 342         }
 343         else
 344         {
 345                 int smax, tmax, i, j, size, size3, maps, stride, l;
 346                 float *bl, scale;
 347                 qbyte *lightmap, *out, *stain;
 348
 349                 // update cached lighting info
 350                 surf->cached_dlight = 0;
 351                 surf->cached_lightscalebit = lightscalebit;
 352                 surf->cached_ambient = r_ambient.value;
 353                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 354                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 355                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 356                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 357
 358                 smax = (surf->extents[0]>>4)+1;
 359                 tmax = (surf->extents[1]>>4)+1;
 360                 size = smax*tmax;
 361                 size3 = size*3;
 362                 lightmap = surf->samples;
 363
 364         // set to full bright if no light data
 365                 bl = floatblocklights;
 366                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
 367                         j = 255*256;
 368                 else
 369                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 370
 371                 // clear to no light
 372                 if (j)
 373                 {
 374                         for (i = 0;i < size3;i++)
 375                                 *bl++ = j;
 376                 }
 377                 else
 378                         memset(bl, 0, size*3*sizeof(float));
 379
 380                 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 381                 {
 382                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 383                         if (surf->cached_dlight)
 384                                 c_light_polys++;
 385                         else if (dlightchanged)
 386                                 return; // don't upload if only updating dlights and none mattered
 387                 }
 388
 389                 // add all the lightmaps
 390                 if (lightmap)
 391                 {
 392                         bl = floatblocklights;
 393                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 394                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 395                                         bl[i] += lightmap[i] * scale;
 396                 }
 397
 398                 stain = surf->stainsamples;
 399                 bl = floatblocklights;
 400                 out = templight;
 401                 // deal with lightmap brightness scale
 402                 scale = 1.0f / (1 << (7 + lightscalebit + 8));
 403                 if (ent->model->lightmaprgba)
 404                 {
 405                         stride = (surf->lightmaptexturestride - smax) * 4;
 406                         for (i = 0;i < tmax;i++, out += stride)
 407                         {
 408                                 for (j = 0;j < smax;j++)
 409                                 {
 410                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 411                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 412                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 413                                         *out++ = 255;
 414                                 }
 415                         }
 416                 }
 417                 else
 418                 {
 419                         stride = (surf->lightmaptexturestride - smax) * 3;
 420                         for (i = 0;i < tmax;i++, out += stride)
 421                         {
 422                                 for (j = 0;j < smax;j++)
 423                                 {
 424                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 425                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 426                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 427                                 }
 428                         }
 429                 }
 430
 431                 R_UpdateTexture(surf->lightmaptexture, templight);
 432         }
 433 }
 434
 435 void R_StainNode (mnode_t *node, model_t *model, vec3_t origin, float radius, int icolor[8])
 436 {
 437         float ndist;
 438         msurface_t *surf, *endsurf;
 439         int sdtable[256], td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, dist2, impacts, impactt, subtract, a, stained, cr, cg, cb, ca, ratio;
 440         qbyte *bl;
 441         vec3_t impact;
 442         // LordHavoc: use 64bit integer...  shame it's not very standardized...
 443 #if _MSC_VER || __BORLANDC__
 444         __int64     k;
 445 #else
 446         long long   k;
 447 #endif
 448
 449
 450         // for comparisons to minimum acceptable light
 451         // compensate for 256 offset
 452         maxdist = radius * radius + 256.0f;
 453
 454         // clamp radius to avoid exceeding 32768 entry division table
 455         if (maxdist > 4194304)
 456                 maxdist = 4194304;
 457
 458         subtract = (int) ((1.0f / maxdist) * 4194304.0f);
 459
 460 loc0:
 461         if (node->contents < 0)
 462                 return;
 463         ndist = PlaneDiff(origin, node->plane);
 464         if (ndist > radius)
 465         {
 466                 node = node->children[0];
 467                 goto loc0;
 468         }
 469         if (ndist < -radius)
 470         {
 471                 node = node->children[1];
 472                 goto loc0;
 473         }
 474
 475         dist2 = ndist * ndist + 256.0f;
 476         if (dist2 < maxdist)
 477         {
 478                 maxdist3 = maxdist - dist2;
 479
 480                 if (node->plane->type < 3)
 481                 {
 482                         VectorCopy(origin, impact);
 483                         impact[node->plane->type] -= ndist;
 484                 }
 485                 else
 486                 {
 487                         impact[0] = origin[0] - node->plane->normal[0] * ndist;
 488                         impact[1] = origin[1] - node->plane->normal[1] * ndist;
 489                         impact[2] = origin[2] - node->plane->normal[2] * ndist;
 490                 }
 491
 492                 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 493                 {
 494                         if (surf->stainsamples)
 495                         {
 496                                 smax = (surf->extents[0] >> 4) + 1;
 497                                 tmax = (surf->extents[1] >> 4) + 1;
 498
 499                                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 500                                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 501
 502                                 s = bound(0, impacts, smax * 16) - impacts;
 503                                 t = bound(0, impactt, tmax * 16) - impactt;
 504                                 i = s * s + t * t + dist2;
 505                                 if (i > maxdist)
 506                                         continue;
 507
 508                                 // reduce calculations
 509                                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 510                                         sdtable[s] = i * i + dist2;
 511
 512                                 // convert to 8.8 blocklights format
 513                                 bl = surf->stainsamples;
 514                                 smax3 = smax * 3;
 515                                 stained = false;
 516
 517                                 i = impactt;
 518                                 for (t = 0;t < tmax;t++, i -= 16)
 519                                 {
 520                                         td = i * i;
 521                                         // make sure some part of it is visible on this line
 522                                         if (td < maxdist3)
 523                                         {
 524                                                 maxdist2 = maxdist - td;
 525                                                 for (s = 0;s < smax;s++)
 526                                                 {
 527                                                         if (sdtable[s] < maxdist2)
 528                                                         {
 529                                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 530                                                                 if (k > 0)
 531                                                                 {
 532                                                                         ratio = rand() & 255;
 533                                                                         ca = (((icolor[7] - icolor[3]) * ratio) >> 8) + icolor[3];
 534                                                                         a = (ca * k) >> 8;
 535                                                                         if (a > 0)
 536                                                                         {
 537                                                                                 a = bound(0, a, 256);
 538                                                                                 cr = (((icolor[4] - icolor[0]) * ratio) >> 8) + icolor[0];
 539                                                                                 cg = (((icolor[5] - icolor[1]) * ratio) >> 8) + icolor[1];
 540                                                                                 cb = (((icolor[6] - icolor[2]) * ratio) >> 8) + icolor[2];
 541                                                                                 bl[0] = (qbyte) ((((cr - (int) bl[0]) * a) >> 8) + (int) bl[0]);
 542                                                                                 bl[1] = (qbyte) ((((cg - (int) bl[1]) * a) >> 8) + (int) bl[1]);
 543                                                                                 bl[2] = (qbyte) ((((cb - (int) bl[2]) * a) >> 8) + (int) bl[2]);
 544                                                                                 stained = true;
 545                                                                         }
 546                                                                 }
 547                                                         }
 548                                                         bl += 3;
 549                                                 }
 550                                         }
 551                                         else // skip line
 552                                                 bl += smax3;
 553                                 }
 554                                 // force lightmap upload
 555                                 if (stained)
 556                                         surf->cached_dlight = true;
 557                         }
 558                 }
 559         }
 560
 561         if (node->children[0]->contents >= 0)
 562         {
 563                 if (node->children[1]->contents >= 0)
 564                 {
 565                         R_StainNode(node->children[0], model, origin, radius, icolor);
 566                         node = node->children[1];
 567                         goto loc0;
 568                 }
 569                 else
 570                 {
 571                         node = node->children[0];
 572                         goto loc0;
 573                 }
 574         }
 575         else if (node->children[1]->contents >= 0)
 576         {
 577                 node = node->children[1];
 578                 goto loc0;
 579         }
 580 }
 581
 582 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 583 {
 584         int n, icolor[8];
 585         entity_render_t *ent;
 586         model_t *model;
 587         vec3_t org;
 588         icolor[0] = cr1;
 589         icolor[1] = cg1;
 590         icolor[2] = cb1;
 591         icolor[3] = ca1;
 592         icolor[4] = cr2;
 593         icolor[5] = cg2;
 594         icolor[6] = cb2;
 595         icolor[7] = ca2;
 596
 597         model = cl.worldmodel;
 598         if (model)
 599                 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, icolor);
 600
 601         // look for embedded bmodels
 602         for (n = 0;n < cl_num_brushmodel_entities;n++)
 603         {
 604                 ent = cl_brushmodel_entities[n];
 605                 model = ent->model;
 606                 if (model && model->name[0] == '*')
 607                 {
 608                         Mod_CheckLoaded(model);
 609                         if (model->type == mod_brush)
 610                         {
 611                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 612                                 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, icolor);
 613                         }
 614                 }
 615         }
 616 }
 617
 618
 619 /*
 620 =============================================================
 621
 622         BRUSH MODELS
 623
 624 =============================================================
 625 */
 626
 627 static void RSurf_AddLightmapToVertexColors(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 628 {
 629         int i;
 630         float scale;
 631         const qbyte *lm;
 632         if (styles[0] != 255)
 633         {
 634                 for (i = 0;i < numverts;i++, c += 4)
 635                 {
 636                         lm = samples + lightmapoffsets[i];
 637                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 638                         VectorMA(c, scale, lm, c);
 639                         if (styles[1] != 255)
 640                         {
 641                                 lm += size3;
 642                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 643                                 VectorMA(c, scale, lm, c);
 644                                 if (styles[2] != 255)
 645                                 {
 646                                         lm += size3;
 647                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 648                                         VectorMA(c, scale, lm, c);
 649                                         if (styles[3] != 255)
 650                                         {
 651                                                 lm += size3;
 652                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 653                                                 VectorMA(c, scale, lm, c);
 654                                         }
 655                                 }
 656                         }
 657                 }
 658         }
 659 }
 660
 661 static void RSurf_FogColors(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 662 {
 663         int i;
 664         float diff[3], f;
 665         if (fogenabled)
 666         {
 667                 for (i = 0;i < numverts;i++, v += 4, c += 4)
 668                 {
 669                         VectorSubtract(v, modelorg, diff);
 670                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 671                         VectorScale(c, f, c);
 672                 }
 673         }
 674         else if (colorscale != 1)
 675                 for (i = 0;i < numverts;i++, c += 4)
 676                         VectorScale(c, colorscale, c);
 677 }
 678
 679 static void RSurf_FoggedColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 680 {
 681         int i;
 682         float diff[3], f;
 683         r *= colorscale;
 684         g *= colorscale;
 685         b *= colorscale;
 686         if (fogenabled)
 687         {
 688                 for (i = 0;i < numverts;i++, v += 4, c += 4)
 689                 {
 690                         VectorSubtract(v, modelorg, diff);
 691                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 692                         c[0] = r * f;
 693                         c[1] = g * f;
 694                         c[2] = b * f;
 695                         c[3] = a;
 696                 }
 697         }
 698         else
 699         {
 700                 for (i = 0;i < numverts;i++, c += 4)
 701                 {
 702                         c[0] = r;
 703                         c[1] = g;
 704                         c[2] = b;
 705                         c[3] = a;
 706                 }
 707         }
 708 }
 709
 710 static void RSurf_FogPassColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 711 {
 712         int i;
 713         float diff[3], f;
 714         r *= colorscale;
 715         g *= colorscale;
 716         b *= colorscale;
 717         for (i = 0;i < numverts;i++, v += 4, c += 4)
 718         {
 719                 VectorSubtract(v, modelorg, diff);
 720                 f = exp(fogdensity/DotProduct(diff, diff));
 721                 c[0] = r;
 722                 c[1] = g;
 723                 c[2] = b;
 724                 c[3] = a * f;
 725         }
 726 }
 727
 728 static void RSurf_ScaleColors(float *c, float scale, int numverts)
 729 {
 730         int i;
 731         if (scale != 1)
 732                 for (i = 0;i < numverts;i++, c += 4)
 733                         VectorScale(c, scale, c);
 734 }
 735
 736 static int RSurf_LightSeparate(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color)
 737 {
 738         float f;
 739         const float *v;
 740         float *c;
 741         int i, l, lit = false;
 742         const rdlight_t *rd;
 743         vec3_t lightorigin;
 744         for (l = 0;l < r_numdlights;l++)
 745         {
 746                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 747                 {
 748                         rd = &r_dlight[l];
 749                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 750                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
 751                         {
 752                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 753                                 if (f < rd->cullradius2)
 754                                 {
 755                                         f = (1.0f / f) - rd->subtract;
 756                                         VectorMA(c, f, rd->light, c);
 757                                         lit = true;
 758                                 }
 759                         }
 760                 }
 761         }
 762         return lit;
 763 }
 764
 765 // note: this untransforms lights to do the checking,
 766 // and takes surf->mesh->verts data
 767 static int RSurf_LightCheck(const matrix4x4_t *matrix, const int *dlightbits, const surfmesh_t *mesh)
 768 {
 769         int i, l;
 770         const rdlight_t *rd;
 771         vec3_t lightorigin;
 772         const float *v;
 773         for (l = 0;l < r_numdlights;l++)
 774         {
 775                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 776                 {
 777                         rd = &r_dlight[l];
 778                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 779                         for (i = 0, v = mesh->verts;i < mesh->numverts;i++, v += 4)
 780                                 if (VectorDistance2(v, lightorigin) < rd->cullradius2)
 781                                         return true;
 782                 }
 783         }
 784         return false;
 785 }
 786
 787 static void RSurfShader_Sky(const entity_render_t *ent, const msurface_t *firstsurf)
 788 {
 789         const msurface_t *surf;
 790         const surfmesh_t *mesh;
 791         rmeshstate_t m;
 792
 793         // LordHavoc: HalfLife maps have freaky skypolys...
 794         if (ent->model->ishlbsp)
 795                 return;
 796
 797         if (skyrendernow)
 798         {
 799                 skyrendernow = false;
 800                 if (skyrendermasked)
 801                         R_Sky();
 802         }
 803
 804         // draw depth-only polys
 805         memset(&m, 0, sizeof(m));
 806         if (skyrendermasked)
 807         {
 808                 m.blendfunc1 = GL_ZERO;
 809                 m.blendfunc2 = GL_ONE;
 810         }
 811         else
 812         {
 813                 // fog sky
 814                 m.blendfunc1 = GL_ONE;
 815                 m.blendfunc2 = GL_ZERO;
 816         }
 817         m.wantoverbright = false;
 818         m.depthwrite = true;
 819         m.matrix = ent->matrix;
 820         R_Mesh_State(&m);
 821         for (surf = firstsurf;surf;surf = surf->chain)
 822         {
 823                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 824                 {
 825                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 826                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 827                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 828                         if (skyrendermasked)
 829                                 memset(varray_color, 0, mesh->numverts * sizeof(float[4]));
 830                         else
 831                                 R_FillColors(varray_color, mesh->numverts, fogcolor[0] * mesh_colorscale, fogcolor[1] * mesh_colorscale, fogcolor[2] * mesh_colorscale, 1);
 832                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 833                 }
 834         }
 835 }
 836
 837 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 838 {
 839         const entity_render_t *ent = calldata1;
 840         const msurface_t *surf = ent->model->surfaces + calldata2;
 841         float f;
 842         const surfmesh_t *mesh;
 843         rmeshstate_t m;
 844         float alpha = ent->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
 845         float modelorg[3];
 846         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 847
 848         memset(&m, 0, sizeof(m));
 849         if (ent->effects & EF_ADDITIVE)
 850         {
 851                 m.blendfunc1 = GL_SRC_ALPHA;
 852                 m.blendfunc2 = GL_ONE;
 853         }
 854         else if (surf->currenttexture->fogtexture != NULL || alpha < 1)
 855         {
 856                 m.blendfunc1 = GL_SRC_ALPHA;
 857                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 858         }
 859         else
 860         {
 861                 m.blendfunc1 = GL_ONE;
 862                 m.blendfunc2 = GL_ZERO;
 863         }
 864         m.wantoverbright = true;
 865         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 866         m.matrix = ent->matrix;
 867         R_Mesh_State(&m);
 868         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 869         {
 870                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 871                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 872                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 873                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 874                 f = surf->flags & SURF_DRAWFULLBRIGHT ? 1.0f : ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f);
 875                 R_FillColors(varray_color, mesh->numverts, f, f, f, alpha);
 876                 if (!(surf->flags & SURF_DRAWFULLBRIGHT || ent->effects & EF_FULLBRIGHT))
 877                 {
 878                         if (surf->dlightframe == r_framecount)
 879                                 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
 880                         if (surf->flags & SURF_LIGHTMAP)
 881                                 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 882                 }
 883                 RSurf_FogColors(varray_vertex, varray_color, mesh_colorscale, mesh->numverts, modelorg);
 884                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 885         }
 886
 887         if (fogenabled)
 888         {
 889                 memset(&m, 0, sizeof(m));
 890                 m.blendfunc1 = GL_SRC_ALPHA;
 891                 m.blendfunc2 = GL_ONE;
 892                 m.wantoverbright = false;
 893                 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
 894                 m.matrix = ent->matrix;
 895                 R_Mesh_State(&m);
 896                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 897                 {
 898                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 899                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 900                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 901                         if (m.tex[0])
 902                                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 903                         RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], alpha, mesh_colorscale, mesh->numverts, modelorg);
 904                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 905                 }
 906         }
 907 }
 908
 909 static void RSurfShader_Water(const entity_render_t *ent, const msurface_t *firstsurf)
 910 {
 911         const msurface_t *surf;
 912         vec3_t center;
 913         for (surf = firstsurf;surf;surf = surf->chain)
 914         {
 915                 if ((r_wateralpha.value < 1 && !(surf->flags & SURF_DRAWNOALPHA)) || ent->effects & EF_ADDITIVE || surf->currenttexture->fogtexture)
 916                 {
 917                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 918                         R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
 919                 }
 920                 else
 921                         R_MeshQueue_Add(RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
 922         }
 923 }
 924
 925 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf)
 926 {
 927         float base;
 928         const surfmesh_t *mesh;
 929         rmeshstate_t m;
 930         float modelorg[3];
 931         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 932         memset(&m, 0, sizeof(m));
 933         if (ent->effects & EF_ADDITIVE)
 934         {
 935                 m.blendfunc1 = GL_SRC_ALPHA;
 936                 m.blendfunc2 = GL_ONE;
 937         }
 938         else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
 939         {
 940                 m.blendfunc1 = GL_SRC_ALPHA;
 941                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 942         }
 943         else
 944         {
 945                 m.blendfunc1 = GL_ONE;
 946                 m.blendfunc2 = GL_ZERO;
 947         }
 948         m.wantoverbright = true;
 949         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 950         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 951         m.matrix = ent->matrix;
 952         R_Mesh_State(&m);
 953         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 954         {
 955                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 956                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 957                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 958                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 959                 R_FillColors(varray_color, mesh->numverts, base, base, base, ent->alpha);
 960                 if (!(ent->effects & EF_FULLBRIGHT))
 961                 {
 962                         if (surf->dlightframe == r_framecount)
 963                                 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
 964                         if (surf->flags & SURF_LIGHTMAP)
 965                                 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 966                 }
 967                 RSurf_FogColors(varray_vertex, varray_color, mesh_colorscale, mesh->numverts, modelorg);
 968                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 969         }
 970 }
 971
 972 static void RSurfShader_Wall_Pass_BaseFullbright(const entity_render_t *ent, const msurface_t *surf)
 973 {
 974         const surfmesh_t *mesh;
 975         rmeshstate_t m;
 976         float modelorg[3];
 977         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 978         memset(&m, 0, sizeof(m));
 979         if (ent->effects & EF_ADDITIVE)
 980         {
 981                 m.blendfunc1 = GL_SRC_ALPHA;
 982                 m.blendfunc2 = GL_ONE;
 983         }
 984         else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
 985         {
 986                 m.blendfunc1 = GL_SRC_ALPHA;
 987                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 988         }
 989         else
 990         {
 991                 m.blendfunc1 = GL_ONE;
 992                 m.blendfunc2 = GL_ZERO;
 993         }
 994         m.wantoverbright = false;
 995         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 996         m.matrix = ent->matrix;
 997         R_Mesh_State(&m);
 998         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 999         {
1000                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1001                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1002                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1003                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1004                 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1005                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1006         }
1007 }
1008
1009 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1010 {
1011         const surfmesh_t *mesh;
1012         rmeshstate_t m;
1013         float modelorg[3];
1014         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1015         memset(&m, 0, sizeof(m));
1016         m.blendfunc1 = GL_SRC_ALPHA;
1017         m.blendfunc2 = GL_ONE;
1018         m.wantoverbright = false;
1019         m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1020         m.matrix = ent->matrix;
1021         R_Mesh_State(&m);
1022         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1023         {
1024                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1025                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1026                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1027                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1028                 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1029                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1030         }
1031 }
1032
1033 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1034 {
1035         const surfmesh_t *mesh;
1036         rmeshstate_t m;
1037         float modelorg[3];
1038         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1039         memset(&m, 0, sizeof(m));
1040         m.blendfunc1 = GL_SRC_ALPHA;
1041         m.blendfunc2 = GL_ONE;
1042         m.wantoverbright = false;
1043         m.matrix = ent->matrix;
1044         m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1045         R_Mesh_State(&m);
1046         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1047         {
1048                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1049                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1050                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1051                 if (m.tex[0])
1052                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1053                 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1054                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1055         }
1056 }
1057
1058 static void RSurfShader_OpaqueWall_Pass_TripleTexCombine(const entity_render_t *ent, const msurface_t *surf)
1059 {
1060         const surfmesh_t *mesh;
1061         static rmeshstate_t m;
1062         float cl;
1063         //memset(&m, 0, sizeof(m));
1064         m.blendfunc1 = GL_ONE;
1065         m.blendfunc2 = GL_ZERO;
1066         m.wantoverbright = false;
1067         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1068         m.texrgbscale[0] = 1.0f;
1069         m.tex[1] = R_GetTexture(surf->lightmaptexture);
1070         m.texrgbscale[1] = 4.0f;
1071         m.tex[2] = R_GetTexture(surf->currenttexture->detailtexture);
1072         m.texrgbscale[2] = 2.0f;
1073         m.matrix = ent->matrix;
1074         R_Mesh_State(&m);
1075         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1076         {
1077                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1078                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1079                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1080                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1081                 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1082                 memcpy(varray_texcoord[2], mesh->ab, mesh->numverts * sizeof(float[2]));
1083                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1084                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1085                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1086         }
1087 }
1088
1089 static void RSurfShader_OpaqueWall_Pass_BaseMTex(const entity_render_t *ent, const msurface_t *surf)
1090 {
1091         const surfmesh_t *mesh;
1092         rmeshstate_t m;
1093         float cl;
1094         memset(&m, 0, sizeof(m));
1095         m.blendfunc1 = GL_ONE;
1096         m.blendfunc2 = GL_ZERO;
1097         m.wantoverbright = true;
1098         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1099         m.tex[1] = R_GetTexture(surf->lightmaptexture);
1100         m.matrix = ent->matrix;
1101         R_Mesh_State(&m);
1102         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1103         {
1104                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1105                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1106                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1107                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1108                 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1109                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1110                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1111                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1112         }
1113 }
1114
1115 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const msurface_t *surf)
1116 {
1117         const surfmesh_t *mesh;
1118         rmeshstate_t m;
1119         float cl;
1120         memset(&m, 0, sizeof(m));
1121         m.blendfunc1 = GL_ONE;
1122         m.blendfunc2 = GL_ZERO;
1123         m.wantoverbright = false;
1124         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1125         m.matrix = ent->matrix;
1126         R_Mesh_State(&m);
1127         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1128         {
1129                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1130                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1131                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1132                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1133                 cl = mesh_colorscale;
1134                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1135                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1136         }
1137 }
1138
1139 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const msurface_t *surf)
1140 {
1141         const surfmesh_t *mesh;
1142         rmeshstate_t m;
1143         float cl;
1144         memset(&m, 0, sizeof(m));
1145         m.blendfunc1 = GL_ZERO;
1146         m.blendfunc2 = GL_SRC_COLOR;
1147         m.wantoverbright = true;
1148         m.tex[0] = R_GetTexture(surf->lightmaptexture);
1149         m.matrix = ent->matrix;
1150         R_Mesh_State(&m);
1151         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1152         {
1153                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1154                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1155                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1156                 memcpy(varray_texcoord[0], mesh->uv, mesh->numverts * sizeof(float[2]));
1157                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1158                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1159                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1160         }
1161 }
1162
1163 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const msurface_t *surf)
1164 {
1165         const surfmesh_t *mesh;
1166         rmeshstate_t m;
1167
1168         if (surf->dlightframe != r_framecount)
1169                 return;
1170         if (ent->effects & EF_FULLBRIGHT)
1171                 return;
1172
1173         memset(&m, 0, sizeof(m));
1174         m.blendfunc1 = GL_SRC_ALPHA;
1175         m.blendfunc2 = GL_ONE;
1176         m.wantoverbright = true;
1177         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1178         m.matrix = ent->matrix;
1179         R_Mesh_State(&m);
1180         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1181         {
1182                 if (RSurf_LightCheck(&ent->inversematrix, surf->dlightbits, mesh))
1183                 {
1184                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1185                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1186                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1187                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1188                         R_FillColors(varray_color, mesh->numverts, 0, 0, 0, 1);
1189                         RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
1190                         RSurf_ScaleColors(varray_color, mesh_colorscale, mesh->numverts);
1191                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1192                 }
1193         }
1194 }
1195
1196 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1197 {
1198         const surfmesh_t *mesh;
1199         rmeshstate_t m;
1200         float modelorg[3];
1201         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1202         memset(&m, 0, sizeof(m));
1203         m.blendfunc1 = GL_SRC_ALPHA;
1204         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1205         m.wantoverbright = false;
1206         m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1207         m.matrix = ent->matrix;
1208         R_Mesh_State(&m);
1209         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1210         {
1211                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1212                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1213                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1214                 if (m.tex[0])
1215                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1216                 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], 1, mesh_colorscale, mesh->numverts, modelorg);
1217                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1218         }
1219 }
1220
1221 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const msurface_t *surf)
1222 {
1223         const surfmesh_t *mesh;
1224         rmeshstate_t m;
1225         memset(&m, 0, sizeof(m));
1226         m.blendfunc1 = GL_DST_COLOR;
1227         m.blendfunc2 = GL_SRC_COLOR;
1228         m.wantoverbright = false;
1229         m.tex[0] = R_GetTexture(surf->currenttexture->detailtexture);
1230         m.matrix = ent->matrix;
1231         R_Mesh_State(&m);
1232         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1233         {
1234                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1235                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1236                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1237                 memcpy(varray_texcoord[0], mesh->ab, mesh->numverts * sizeof(float[2]));
1238                 R_FillColors(varray_color, mesh->numverts, 1, 1, 1, 1);
1239                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1240         }
1241 }
1242
1243 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1244 {
1245         const surfmesh_t *mesh;
1246         rmeshstate_t m;
1247         memset(&m, 0, sizeof(m));
1248         m.blendfunc1 = GL_SRC_ALPHA;
1249         m.blendfunc2 = GL_ONE;
1250         m.wantoverbright = false;
1251         m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1252         m.matrix = ent->matrix;
1253         R_Mesh_State(&m);
1254         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1255         {
1256                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1257                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1258                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1259                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1260                 R_FillColors(varray_color, mesh->numverts, mesh_colorscale, mesh_colorscale, mesh_colorscale, 1);
1261                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1262         }
1263 }
1264
1265 static void RSurfShader_Wall_Fullbright_Callback(const void *calldata1, int calldata2)
1266 {
1267         const entity_render_t *ent = calldata1;
1268         const msurface_t *surf = ent->model->surfaces + calldata2;
1269         RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1270         if (surf->currenttexture->glowtexture)
1271                 RSurfShader_Wall_Pass_Glow(ent, surf);
1272         if (fogenabled)
1273                 RSurfShader_Wall_Pass_Fog(ent, surf);
1274 }
1275
1276 static void RSurfShader_Wall_Fullbright(const entity_render_t *ent, const msurface_t *firstsurf)
1277 {
1278         const msurface_t *surf;
1279         vec3_t center;
1280         if (ent->effects & EF_ADDITIVE || ent->alpha < 1)
1281         {
1282                 for (surf = firstsurf;surf;surf = surf->chain)
1283                 {
1284                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1285                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Fullbright_Callback, ent, surf - ent->model->surfaces);
1286                 }
1287         }
1288         else
1289         {
1290                 for (surf = firstsurf;surf;surf = surf->chain)
1291                 {
1292                         if (surf->currenttexture->fogtexture != NULL)
1293                         {
1294                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1295                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Fullbright_Callback, ent, surf - ent->model->surfaces);
1296                         }
1297                         else
1298                                 RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1299                 }
1300                 for (surf = firstsurf;surf;surf = surf->chain)
1301                         if (surf->currenttexture->glowtexture)
1302                                 if (surf->currenttexture->fogtexture == NULL)
1303                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1304                 if (fogenabled)
1305                         for (surf = firstsurf;surf;surf = surf->chain)
1306                                 if (surf->currenttexture->fogtexture == NULL)
1307                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1308         }
1309 }
1310
1311 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1312 {
1313         const entity_render_t *ent = calldata1;
1314         const msurface_t *surf = ent->model->surfaces + calldata2;
1315         RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1316         if (surf->currenttexture->glowtexture)
1317                 RSurfShader_Wall_Pass_Glow(ent, surf);
1318         if (fogenabled)
1319                 RSurfShader_Wall_Pass_Fog(ent, surf);
1320 }
1321
1322 static void RSurfShader_Wall_Vertex(const entity_render_t *ent, const msurface_t *firstsurf)
1323 {
1324         const msurface_t *surf;
1325         vec3_t center;
1326         if (ent->effects & EF_ADDITIVE || ent->alpha < 1)
1327         {
1328                 for (surf = firstsurf;surf;surf = surf->chain)
1329                 {
1330                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1331                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1332                 }
1333         }
1334         else
1335         {
1336                 for (surf = firstsurf;surf;surf = surf->chain)
1337                 {
1338                         if (surf->currenttexture->fogtexture != NULL)
1339                         {
1340                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1341                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1342                         }
1343                         else
1344                                 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1345                 }
1346                 for (surf = firstsurf;surf;surf = surf->chain)
1347                         if (surf->currenttexture->glowtexture)
1348                                 if (surf->currenttexture->fogtexture == NULL)
1349                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1350                 if (fogenabled)
1351                         for (surf = firstsurf;surf;surf = surf->chain)
1352                                 if (surf->currenttexture->fogtexture == NULL)
1353                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1354         }
1355 }
1356
1357 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const msurface_t *firstsurf)
1358 {
1359         const msurface_t *surf;
1360         vec3_t center;
1361         if (ent->alpha < 1 || ent->effects & EF_ADDITIVE)
1362         {
1363                 for (surf = firstsurf;surf;surf = surf->chain)
1364                 {
1365                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1366                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1367                 }
1368         }
1369         else if (r_vertexsurfaces.integer || ent->alpha < 1 || ent->effects & EF_ADDITIVE)
1370         {
1371                 for (surf = firstsurf;surf;surf = surf->chain)
1372                 {
1373                         if (surf->currenttexture->fogtexture != NULL)
1374                         {
1375                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1376                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1377                         }
1378                         else
1379                                 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1380                 }
1381                 for (surf = firstsurf;surf;surf = surf->chain)
1382                         if (surf->currenttexture->glowtexture)
1383                                 if (surf->currenttexture->fogtexture == NULL)
1384                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1385                 if (fogenabled)
1386                         for (surf = firstsurf;surf;surf = surf->chain)
1387                                 if (surf->currenttexture->fogtexture == NULL)
1388                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1389         }
1390         else
1391         {
1392                 if (r_textureunits.integer >= 2)
1393                 {
1394                         if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1395                         {
1396                                 for (surf = firstsurf;surf;surf = surf->chain)
1397                                 {
1398                                         if (surf->currenttexture->fogtexture != NULL)
1399                                         {
1400                                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1401                                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1402                                         }
1403                                         else
1404                                                 RSurfShader_OpaqueWall_Pass_TripleTexCombine(ent, surf);
1405                                 }
1406                         }
1407                         else
1408                         {
1409                                 for (surf = firstsurf;surf;surf = surf->chain)
1410                                 {
1411                                         if (surf->currenttexture->fogtexture != NULL)
1412                                         {
1413                                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1414                                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1415                                         }
1416                                         else
1417                                                 RSurfShader_OpaqueWall_Pass_BaseMTex(ent, surf);
1418                                 }
1419                                 if (r_detailtextures.integer)
1420                                         for (surf = firstsurf;surf;surf = surf->chain)
1421                                                 if (surf->currenttexture->fogtexture == NULL)
1422                                                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1423                         }
1424                 }
1425                 else
1426                 {
1427                         for (surf = firstsurf;surf;surf = surf->chain)
1428                         {
1429                                 if (surf->currenttexture->fogtexture != NULL)
1430                                 {
1431                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1432                                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1433                                 }
1434                                 else
1435                                         RSurfShader_OpaqueWall_Pass_BaseTexture(ent, surf);
1436                         }
1437                         for (surf = firstsurf;surf;surf = surf->chain)
1438                                 if (surf->currenttexture->fogtexture == NULL)
1439                                         RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, surf);
1440                         if (r_detailtextures.integer)
1441                                 for (surf = firstsurf;surf;surf = surf->chain)
1442                                         if (surf->currenttexture->fogtexture == NULL)
1443                                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1444                 }
1445                 if (!r_dlightmap.integer)
1446                         for (surf = firstsurf;surf;surf = surf->chain)
1447                                 if (surf->dlightframe == r_framecount)
1448                                         if (surf->currenttexture->fogtexture == NULL)
1449                                                 RSurfShader_OpaqueWall_Pass_Light(ent, surf);
1450                 for (surf = firstsurf;surf;surf = surf->chain)
1451                         if (surf->currenttexture->glowtexture)
1452                                 if (surf->currenttexture->fogtexture == NULL)
1453                                         RSurfShader_OpaqueWall_Pass_Glow(ent, surf);
1454                 if (fogenabled)
1455                         for (surf = firstsurf;surf;surf = surf->chain)
1456                                 if (surf->currenttexture->fogtexture == NULL)
1457                                         RSurfShader_OpaqueWall_Pass_Fog(ent, surf);
1458         }
1459 }
1460
1461 Cshader_t Cshader_wall_vertex = {{NULL, RSurfShader_Wall_Vertex}, NULL};
1462 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, NULL};
1463 Cshader_t Cshader_wall_fullbright = {{NULL, RSurfShader_Wall_Fullbright}, NULL};
1464 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, NULL};
1465 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, NULL};
1466
1467 int Cshader_count = 5;
1468 Cshader_t *Cshaders[5] =
1469 {
1470         &Cshader_wall_vertex,
1471         &Cshader_wall_lightmap,
1472         &Cshader_wall_fullbright,
1473         &Cshader_water,
1474         &Cshader_sky
1475 };
1476
1477 void R_DrawSurfaces(entity_render_t *ent, int sky, int normal)
1478 {
1479         int i, alttextures, texframe, framecount;
1480         texture_t *t;
1481         model_t *model;
1482         msurface_t *surf;
1483         vec3_t modelorg;
1484         Cshader_t *shader;
1485
1486         if (!ent->model)
1487                 return;
1488
1489         for (i = 0;i < Cshader_count;i++)
1490                 Cshaders[i]->chain = NULL;
1491
1492         model = ent->model;
1493         alttextures = ent->frame != 0;
1494         texframe = (int)(cl.time * 5.0f);
1495
1496         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1497         for (i = 0;i < model->nummodelsurfaces;i++)
1498         {
1499                 surf = model->modelsortedsurfaces[i];
1500                 if (surf->visframe == r_framecount)
1501                 {
1502                         // mark any backface surfaces as not visible
1503                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1504                         {
1505                                 if (!(surf->flags & SURF_PLANEBACK))
1506                                         surf->visframe = -1;
1507                         }
1508                         else
1509                         {
1510                                 if (surf->flags & SURF_PLANEBACK)
1511                                         surf->visframe = -1;
1512                         }
1513                         if (surf->visframe == r_framecount)
1514                         {
1515                                 if (r_cullsurface.integer && R_CullBox (surf->poly_mins, surf->poly_maxs))
1516                                         surf->visframe = -1;
1517                                 else
1518                                 {
1519                                         c_faces++;
1520                                         t = surf->texinfo->texture;
1521                                         if (t->animated)
1522                                         {
1523                                                 framecount = t->anim_total[alttextures];
1524                                                 if (framecount >= 2)
1525                                                         surf->currenttexture = t->anim_frames[alttextures][texframe % framecount];
1526                                                 else
1527                                                         surf->currenttexture = t->anim_frames[alttextures][0];
1528                                         }
1529                                         else
1530                                                 surf->currenttexture = t;
1531                                         surf->chain = surf->shader->chain;
1532                                         surf->shader->chain = surf;
1533                                 }
1534                         }
1535                 }
1536         }
1537
1538         if (sky)
1539         {
1540                 for (i = 0;i < Cshader_count;i++)
1541                 {
1542                         shader = Cshaders[i];
1543                         if (shader->chain && shader->shaderfunc[SHADERSTAGE_SKY])
1544                                 shader->shaderfunc[SHADERSTAGE_SKY](ent, shader->chain);
1545                 }
1546         }
1547
1548         if (normal)
1549         {
1550                 if (r_dynamic.integer)
1551                         R_MarkLights(ent);
1552
1553                 if (!r_vertexsurfaces.integer)
1554                 {
1555                         for (i = 0, surf = ent->model->surfaces + ent->model->firstmodelsurface;i < ent->model->nummodelsurfaces;i++, surf++)
1556                         {
1557                                 if (surf->visframe == r_framecount && surf->lightmaptexture != NULL)
1558                                 {
1559                                         if (surf->cached_dlight
1560                                         || surf->cached_ambient != r_ambient.value
1561                                         || surf->cached_lightscalebit != lightscalebit)
1562                                                 R_BuildLightMap(ent, surf, false); // base lighting changed
1563                                         else if (r_dynamic.integer)
1564                                         {
1565                                                 if  (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
1566                                                 || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
1567                                                 || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
1568                                                 || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
1569                                                         R_BuildLightMap(ent, surf, false); // base lighting changed
1570                                                 else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
1571                                                         R_BuildLightMap(ent, surf, true); // only dlights
1572                                         }
1573                                 }
1574                         }
1575                 }
1576
1577                 for (i = 0;i < Cshader_count;i++)
1578                 {
1579                         shader = Cshaders[i];
1580                         if (shader->chain && shader->shaderfunc[SHADERSTAGE_NORMAL])
1581                                 shader->shaderfunc[SHADERSTAGE_NORMAL](ent, shader->chain);
1582                 }
1583         }
1584 }
1585
1586 /*
1587 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1588 {
1589         int i;
1590         float *v;
1591         rmeshstate_t m;
1592         const entity_render_t *ent = calldata1;
1593         const mportal_t *portal = ent->model->portals + calldata2;
1594         memset(&m, 0, sizeof(m));
1595         m.blendfunc1 = GL_SRC_ALPHA;
1596         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1597         m.wantoverbright = false;
1598         m.matrix = ent->matrix;
1599         R_Mesh_State(&m);
1600         R_Mesh_ResizeCheck(portal->numpoints, portal->numpoints - 2);
1601         for (i = 0;i < mesh->numtriangles;i++)
1602         {
1603                 varray_element[i * 3 + 0] = 0;
1604                 varray_element[i * 3 + 1] = i + 1;
1605                 varray_element[i * 3 + 2] = i + 2;
1606         }
1607         i = portal - ent->model->portals;
1608         R_FillColors(varray_color, mesh->numverts,
1609                 ((i & 0x0007) >> 0) * (1.0f / 7.0f) * mesh_colorscale,
1610                 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * mesh_colorscale,
1611                 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * mesh_colorscale,
1612                 0.125f);
1613         if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1614         {
1615                 for (i = portal->numpoints - 1, v = varray_vertex;i >= 0;i--, v += 4)
1616                         VectorCopy(portal->points[i].position, v);
1617         }
1618         else
1619                 for (i = 0, v = varray_vertex;i < portal->numpoints;i++, v += 4)
1620                         VectorCopy(portal->points[i].position, v);
1621         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2);
1622 }
1623
1624 static void R_DrawPortals(entity_render_t *ent)
1625 {
1626         int i;
1627         mportal_t *portal, *endportal;
1628         float temp[3], center[3], f;
1629
1630         if (r_drawportals.integer < 1)
1631                 return;
1632
1633         for (portal = ent->model->portals, endportal = portal + ent->model->numportals;portal < endportal;portal++)
1634         {
1635                 if (portal->here->visframe == r_framecount || portal->past->visframe == r_framecount)
1636                 {
1637                         VectorClear(temp);
1638                         for (i = 0;i < portal->numpoints;i++)
1639                                 VectorAdd(temp, portal->points[i].position, temp);
1640                         f = ixtable[portal->numpoints];
1641                         VectorScale(temp, f, temp);
1642                         Matrix4x4_Transform(&ent->matrix, temp, center);
1643                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->portals);
1644                 }
1645         }
1646 }
1647 */
1648
1649 void R_DrawBrushModel(entity_render_t *ent, int sky, int normal)
1650 {
1651         int i;
1652         msurface_t *surf;
1653         model_t *model;
1654         vec3_t modelorg;
1655
1656         // because bmodels can be reused, we have to decide which things to render
1657         // from scratch every time
1658         model = ent->model;
1659         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1660         for (i = 0;i < model->nummodelsurfaces;i++)
1661         {
1662                 surf = model->surfaces + model->firstmodelsurface + i;
1663                 surf->visframe = r_framecount;
1664                 surf->pvsframe = -1;
1665                 surf->worldnodeframe = -1;
1666                 surf->lightframe = -1;
1667                 surf->dlightframe = -1;
1668         }
1669         R_DrawSurfaces(ent, sky, normal);
1670 }
1671
1672 void R_SurfaceWorldNode (void)
1673 {
1674         msurface_t *surf;
1675         for (surf = r_pvsfirstsurface;surf;surf = surf->pvschain)
1676                 surf->visframe = r_framecount;
1677 }
1678
1679 /*
1680 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1681 {
1682         int portalstack, i;
1683         mportal_t *p, *pstack[8192];
1684         msurface_t *surf, **mark, **endmark;
1685         mleaf_t *leaf;
1686         // LordHavoc: portal-passage worldnode with PVS;
1687         // follows portals leading outward from viewleaf, does not venture
1688         // offscreen or into leafs that are not visible, faster than Quake's
1689         // RecursiveWorldNode
1690         leaf = viewleaf;
1691         leaf->worldnodeframe = r_framecount;
1692         portalstack = 0;
1693 loc0:
1694         c_leafs++;
1695         if (leaf->nummarksurfaces)
1696         {
1697                 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1698                 {
1699                         surf = *mark++;
1700                         // make sure surfaces are only processed once
1701                         if (surf->worldnodeframe != r_framecount)
1702                         {
1703                                 surf->worldnodeframe = r_framecount;
1704                                 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1705                                 {
1706                                         if (surf->flags & SURF_PLANEBACK)
1707                                                 surf->visframe = r_framecount;
1708                                 }
1709                                 else
1710                                 {
1711                                         if (!(surf->flags & SURF_PLANEBACK))
1712                                                 surf->visframe = r_framecount;
1713                                 }
1714                         }
1715                 }
1716         }
1717         // follow portals into other leafs
1718         for (p = leaf->portals;p;p = p->next)
1719         {
1720                 leaf = p->past;
1721                 if (leaf->worldnodeframe != r_framecount)
1722                 {
1723                         leaf->worldnodeframe = r_framecount;
1724                         // FIXME: R_NotCulledBox is absolute, should be done relative
1725                         if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1726                         {
1727                                 p->visframe = r_framecount;
1728                                 pstack[portalstack++] = p;
1729                                 goto loc0;
1730 loc1:
1731                                 p = pstack[--portalstack];
1732                         }
1733                 }
1734         }
1735         if (portalstack)
1736                 goto loc1;
1737 }
1738 */
1739
1740 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1741 {
1742         int c, leafstackpos;
1743         mleaf_t *leaf, *leafstack[8192];
1744         mportal_t *p;
1745         msurface_t **mark;
1746         vec3_t modelorg;
1747         // LordHavoc: portal-passage worldnode with PVS;
1748         // follows portals leading outward from viewleaf, does not venture
1749         // offscreen or into leafs that are not visible, faster than Quake's
1750         // RecursiveWorldNode
1751         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1752         viewleaf->worldnodeframe = r_framecount;
1753         leafstack[0] = viewleaf;
1754         leafstackpos = 1;
1755         while (leafstackpos)
1756         {
1757                 c_leafs++;
1758                 leaf = leafstack[--leafstackpos];
1759                 // only useful for drawing portals
1760                 //leaf->visframe = r_framecount;
1761                 // draw any surfaces bounding this leaf
1762                 if (leaf->nummarksurfaces)
1763                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1764                                 (*mark++)->visframe = r_framecount;
1765                 // follow portals into other leafs
1766                 for (p = leaf->portals;p;p = p->next)
1767                 {
1768                         leaf = p->past;
1769                         if (leaf->worldnodeframe != r_framecount)
1770                         {
1771                                 leaf->worldnodeframe = r_framecount;
1772                                 // FIXME: R_NotCulledBox is absolute, should be done relative
1773                                 if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1774                                         leafstack[leafstackpos++] = leaf;
1775                         }
1776                 }
1777         }
1778         //if (r_drawportals.integer)
1779         //      R_DrawPortals(ent);
1780 }
1781
1782
1783 void R_PVSUpdate (mleaf_t *viewleaf)
1784 {
1785         int i, j, l, c, bits;
1786         mleaf_t *leaf;
1787         qbyte *vis;
1788         msurface_t **mark, *surf;
1789
1790         if (r_pvsviewleaf == viewleaf && r_pvsviewleafnovis == r_novis.integer)
1791                 return;
1792
1793         r_pvsframecount++;
1794         r_pvsviewleaf = viewleaf;
1795         r_pvsviewleafnovis = r_novis.integer;
1796
1797         if (viewleaf)
1798         {
1799                 vis = Mod_LeafPVS (viewleaf, cl.worldmodel);
1800                 for (j = 0;j < cl.worldmodel->numleafs;j += 8)
1801                 {
1802                         bits = *vis++;
1803                         if (bits)
1804                         {
1805                                 l = cl.worldmodel->numleafs - j;
1806                                 if (l > 8)
1807                                         l = 8;
1808                                 for (i = 0;i < l;i++)
1809                                 {
1810                                         if (bits & (1 << i))
1811                                         {
1812                                                 leaf = &cl.worldmodel->leafs[j + i + 1];
1813                                                 leaf->pvsframe = r_pvsframecount;
1814                                                 // mark surfaces bounding this leaf as visible
1815                                                 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1816                                                         (*mark++)->pvsframe = r_pvsframecount;
1817                                         }
1818                                 }
1819                         }
1820                 }
1821                 // build pvs surfacechain
1822                 r_pvsfirstsurface = NULL;
1823                 mark = &r_pvsfirstsurface;
1824                 for (c = cl.worldmodel->nummodelsurfaces, surf = cl.worldmodel->surfaces + cl.worldmodel->firstmodelsurface;c;c--, surf++)
1825                 {
1826                         if (surf->pvsframe == r_pvsframecount)
1827                         {
1828                                 *mark = surf;
1829                                 mark = &surf->pvschain;
1830                         }
1831                 }
1832                 *mark = NULL;
1833         }
1834 }
1835
1836 /*
1837 =============
1838 R_DrawWorld
1839 =============
1840 */
1841 void R_DrawWorld (entity_render_t *ent)
1842 {
1843         mleaf_t *viewleaf;
1844         viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
1845         R_PVSUpdate(viewleaf);
1846         if (!viewleaf)
1847                 return;
1848         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1849                 R_SurfaceWorldNode ();
1850         else
1851                 R_PortalWorldNode (ent, viewleaf);
1852         R_DrawSurfaces(ent, true, true);
1853 }
1854
1855 /*
1856 =================
1857 R_DrawBrushModel
1858 =================
1859 */
1860 void R_DrawBrushModelSky (entity_render_t *ent)
1861 {
1862         R_DrawBrushModel(ent, true, false);
1863 }
1864
1865 void R_DrawBrushModelNormal (entity_render_t *ent)
1866 {
1867         c_bmodels++;
1868         R_DrawBrushModel(ent, false, true);
1869 }
1870
1871 static void gl_surf_start(void)
1872 {
1873 }
1874
1875 static void gl_surf_shutdown(void)
1876 {
1877 }
1878
1879 static void gl_surf_newmap(void)
1880 {
1881         // reset pvs visibility variables so it will update on first frame
1882         r_pvsframecount = 1;
1883         r_pvsviewleaf = NULL;
1884         r_pvsviewleafnovis = false;
1885         r_pvsfirstsurface = NULL;
1886 }
1887
1888 void GL_Surf_Init(void)
1889 {
1890         int i;
1891         dlightdivtable[0] = 4194304;
1892         for (i = 1;i < 32768;i++)
1893                 dlightdivtable[i] = 4194304 / (i << 7);
1894
1895         Cvar_RegisterVariable(&r_ambient);
1896         Cvar_RegisterVariable(&r_vertexsurfaces);
1897         Cvar_RegisterVariable(&r_dlightmap);
1898         //Cvar_RegisterVariable(&r_drawportals);
1899         Cvar_RegisterVariable(&r_testvis);
1900         Cvar_RegisterVariable(&r_floatbuildlightmap);
1901         Cvar_RegisterVariable(&r_detailtextures);
1902         Cvar_RegisterVariable(&r_surfaceworldnode);
1903         Cvar_RegisterVariable(&r_cullsurface);
1904
1905         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1906 }
1907