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_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "-4"};
  39
  40 static int dlightdivtable[32768];
  41
  42 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  43 {
  44         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
  45         unsigned int *bl;
  46         float dist, impact[3], local[3];
  47
  48         lit = false;
  49
  50         smax = (surf->extents[0] >> 4) + 1;
  51         tmax = (surf->extents[1] >> 4) + 1;
  52         smax3 = smax * 3;
  53
  54         for (lnum = 0; lnum < r_numdlights; lnum++)
  55         {
  56                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  57                         continue;                                       // not lit by this light
  58
  59                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
  60                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  61
  62                 // for comparisons to minimum acceptable light
  63                 // compensate for LIGHTOFFSET
  64                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  65
  66                 dist2 = dist * dist;
  67                 dist2 += LIGHTOFFSET;
  68                 if (dist2 >= maxdist)
  69                         continue;
  70
  71                 if (surf->plane->type < 3)
  72                 {
  73                         VectorCopy(local, impact);
  74                         impact[surf->plane->type] -= dist;
  75                 }
  76                 else
  77                 {
  78                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  79                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  80                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  81                 }
  82
  83                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  84                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  85
  86                 s = bound(0, impacts, smax * 16) - impacts;
  87                 t = bound(0, impactt, tmax * 16) - impactt;
  88                 i = s * s + t * t + dist2;
  89                 if (i > maxdist)
  90                         continue;
  91
  92                 // reduce calculations
  93                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
  94                         sdtable[s] = i * i + dist2;
  95
  96                 maxdist3 = maxdist - dist2;
  97
  98                 // convert to 8.8 blocklights format
  99                 red = r_dlight[lnum].light[0] * (1.0f / 128.0f);
 100                 green = r_dlight[lnum].light[1] * (1.0f / 128.0f);
 101                 blue = r_dlight[lnum].light[2] * (1.0f / 128.0f);
 102                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 103                 bl = intblocklights;
 104
 105                 i = impactt;
 106                 for (t = 0;t < tmax;t++, i -= 16)
 107                 {
 108                         td = i * i;
 109                         // make sure some part of it is visible on this line
 110                         if (td < maxdist3)
 111                         {
 112                                 maxdist2 = maxdist - td;
 113                                 for (s = 0;s < smax;s++)
 114                                 {
 115                                         if (sdtable[s] < maxdist2)
 116                                         {
 117                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 118                                                 if (k > 0)
 119                                                 {
 120                                                         bl[0] += (red   * k);
 121                                                         bl[1] += (green * k);
 122                                                         bl[2] += (blue  * k);
 123                                                         lit = true;
 124                                                 }
 125                                         }
 126                                         bl += 3;
 127                                 }
 128                         }
 129                         else // skip line
 130                                 bl += smax3;
 131                 }
 132         }
 133         return lit;
 134 }
 135
 136 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 137 {
 138         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 139         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 140
 141         lit = false;
 142
 143         smax = (surf->extents[0] >> 4) + 1;
 144         tmax = (surf->extents[1] >> 4) + 1;
 145         smax3 = smax * 3;
 146
 147         for (lnum = 0; lnum < r_numdlights; lnum++)
 148         {
 149                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 150                         continue;                                       // not lit by this light
 151
 152                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
 153                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 154
 155                 // for comparisons to minimum acceptable light
 156                 // compensate for LIGHTOFFSET
 157                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 158
 159                 dist2 = dist * dist;
 160                 dist2 += LIGHTOFFSET;
 161                 if (dist2 >= maxdist)
 162                         continue;
 163
 164                 if (surf->plane->type < 3)
 165                 {
 166                         VectorCopy(local, impact);
 167                         impact[surf->plane->type] -= dist;
 168                 }
 169                 else
 170                 {
 171                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 172                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 173                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 174                 }
 175
 176                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 177                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 178
 179                 td = bound(0, impacts, smax * 16) - impacts;
 180                 td1 = bound(0, impactt, tmax * 16) - impactt;
 181                 td = td * td + td1 * td1 + dist2;
 182                 if (td > maxdist)
 183                         continue;
 184
 185                 // reduce calculations
 186                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 187                         sdtable[s] = td1 * td1 + dist2;
 188
 189                 maxdist3 = maxdist - dist2;
 190
 191                 // convert to 8.8 blocklights format
 192                 red = r_dlight[lnum].light[0];
 193                 green = r_dlight[lnum].light[1];
 194                 blue = r_dlight[lnum].light[2];
 195                 subtract = r_dlight[lnum].subtract * 32768.0f;
 196                 bl = floatblocklights;
 197
 198                 td1 = impactt;
 199                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 200                 {
 201                         td = td1 * td1;
 202                         // make sure some part of it is visible on this line
 203                         if (td < maxdist3)
 204                         {
 205                                 maxdist2 = maxdist - td;
 206                                 for (s = 0;s < smax;s++)
 207                                 {
 208                                         if (sdtable[s] < maxdist2)
 209                                         {
 210                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 211                                                 bl[0] += red   * k;
 212                                                 bl[1] += green * k;
 213                                                 bl[2] += blue  * k;
 214                                                 lit = true;
 215                                         }
 216                                         bl += 3;
 217                                 }
 218                         }
 219                         else // skip line
 220                                 bl += smax3;
 221                 }
 222         }
 223         return lit;
 224 }
 225
 226 /*
 227 ===============
 228 R_BuildLightMap
 229
 230 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 231 ===============
 232 */
 233 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf)
 234 {
 235         if (!r_floatbuildlightmap.integer)
 236         {
 237                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 238                 unsigned int *bl, scale;
 239                 qbyte *lightmap, *out, *stain;
 240
 241                 // update cached lighting info
 242                 surf->cached_dlight = 0;
 243
 244                 smax = (surf->extents[0]>>4)+1;
 245                 tmax = (surf->extents[1]>>4)+1;
 246                 size = smax*tmax;
 247                 size3 = size*3;
 248                 lightmap = surf->samples;
 249
 250         // set to full bright if no light data
 251                 bl = intblocklights;
 252                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 253                 {
 254                         for (i = 0;i < size3;i++)
 255                                 bl[i] = 255*256;
 256                 }
 257                 else
 258                 {
 259         // clear to no light
 260                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 261                         if (j)
 262                         {
 263                                 for (i = 0;i < size3;i++)
 264                                         *bl++ = j;
 265                         }
 266                         else
 267                                 memset(bl, 0, size*3*sizeof(unsigned int));
 268
 269                         if (surf->dlightframe == r_framecount)
 270                         {
 271                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 272                                 if (surf->cached_dlight)
 273                                         c_light_polys++;
 274                         }
 275
 276         // add all the lightmaps
 277                         if (lightmap)
 278                         {
 279                                 bl = intblocklights;
 280                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 281                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 282                                                 bl[i] += lightmap[i] * scale;
 283                         }
 284                 }
 285
 286                 stain = surf->stainsamples;
 287                 bl = intblocklights;
 288                 out = templight;
 289                 // deal with lightmap brightness scale
 290                 shift = 7 + r_lightmapscalebit + 8;
 291                 if (ent->model->brushq1.lightmaprgba)
 292                 {
 293                         stride = (surf->lightmaptexturestride - smax) * 4;
 294                         for (i = 0;i < tmax;i++, out += stride)
 295                         {
 296                                 for (j = 0;j < smax;j++)
 297                                 {
 298                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 299                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 300                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 301                                         *out++ = 255;
 302                                 }
 303                         }
 304                 }
 305                 else
 306                 {
 307                         stride = (surf->lightmaptexturestride - smax) * 3;
 308                         for (i = 0;i < tmax;i++, out += stride)
 309                         {
 310                                 for (j = 0;j < smax;j++)
 311                                 {
 312                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 313                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 314                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 315                                 }
 316                         }
 317                 }
 318
 319                 R_UpdateTexture(surf->lightmaptexture, templight);
 320         }
 321         else
 322         {
 323                 int smax, tmax, i, j, size, size3, maps, stride, l;
 324                 float *bl, scale;
 325                 qbyte *lightmap, *out, *stain;
 326
 327                 // update cached lighting info
 328                 surf->cached_dlight = 0;
 329
 330                 smax = (surf->extents[0]>>4)+1;
 331                 tmax = (surf->extents[1]>>4)+1;
 332                 size = smax*tmax;
 333                 size3 = size*3;
 334                 lightmap = surf->samples;
 335
 336         // set to full bright if no light data
 337                 bl = floatblocklights;
 338                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 339                         j = 255*256;
 340                 else
 341                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 342
 343                 // clear to no light
 344                 if (j)
 345                 {
 346                         for (i = 0;i < size3;i++)
 347                                 *bl++ = j;
 348                 }
 349                 else
 350                         memset(bl, 0, size*3*sizeof(float));
 351
 352                 if (surf->dlightframe == r_framecount)
 353                 {
 354                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 355                         if (surf->cached_dlight)
 356                                 c_light_polys++;
 357                 }
 358
 359                 // add all the lightmaps
 360                 if (lightmap)
 361                 {
 362                         bl = floatblocklights;
 363                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 364                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 365                                         bl[i] += lightmap[i] * scale;
 366                 }
 367
 368                 stain = surf->stainsamples;
 369                 bl = floatblocklights;
 370                 out = templight;
 371                 // deal with lightmap brightness scale
 372                 scale = 1.0f / (1 << (7 + r_lightmapscalebit + 8));
 373                 if (ent->model->brushq1.lightmaprgba)
 374                 {
 375                         stride = (surf->lightmaptexturestride - smax) * 4;
 376                         for (i = 0;i < tmax;i++, out += stride)
 377                         {
 378                                 for (j = 0;j < smax;j++)
 379                                 {
 380                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 381                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 382                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 383                                         *out++ = 255;
 384                                 }
 385                         }
 386                 }
 387                 else
 388                 {
 389                         stride = (surf->lightmaptexturestride - smax) * 3;
 390                         for (i = 0;i < tmax;i++, out += stride)
 391                         {
 392                                 for (j = 0;j < smax;j++)
 393                                 {
 394                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 395                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 396                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 397                                 }
 398                         }
 399                 }
 400
 401                 R_UpdateTexture(surf->lightmaptexture, templight);
 402         }
 403 }
 404
 405 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 406 {
 407         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 408         msurface_t *surf, *endsurf;
 409         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 410         qbyte *bl;
 411         vec3_t impact;
 412
 413         maxdist = radius * radius;
 414         invradius = 1.0f / radius;
 415
 416 loc0:
 417         if (node->contents < 0)
 418                 return;
 419         ndist = PlaneDiff(origin, node->plane);
 420         if (ndist > radius)
 421         {
 422                 node = node->children[0];
 423                 goto loc0;
 424         }
 425         if (ndist < -radius)
 426         {
 427                 node = node->children[1];
 428                 goto loc0;
 429         }
 430
 431         dist2 = ndist * ndist;
 432         maxdist3 = maxdist - dist2;
 433
 434         if (node->plane->type < 3)
 435         {
 436                 VectorCopy(origin, impact);
 437                 impact[node->plane->type] -= ndist;
 438         }
 439         else
 440         {
 441                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 442                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 443                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 444         }
 445
 446         for (surf = model->brushq1.surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 447         {
 448                 if (surf->stainsamples)
 449                 {
 450                         smax = (surf->extents[0] >> 4) + 1;
 451                         tmax = (surf->extents[1] >> 4) + 1;
 452
 453                         impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 454                         impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 455
 456                         s = bound(0, impacts, smax * 16) - impacts;
 457                         t = bound(0, impactt, tmax * 16) - impactt;
 458                         i = s * s + t * t + dist2;
 459                         if (i > maxdist)
 460                                 continue;
 461
 462                         // reduce calculations
 463                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 464                                 sdtable[s] = i * i + dist2;
 465
 466                         bl = surf->stainsamples;
 467                         smax3 = smax * 3;
 468                         stained = false;
 469
 470                         i = impactt;
 471                         for (t = 0;t < tmax;t++, i -= 16)
 472                         {
 473                                 td = i * i;
 474                                 // make sure some part of it is visible on this line
 475                                 if (td < maxdist3)
 476                                 {
 477                                         maxdist2 = maxdist - td;
 478                                         for (s = 0;s < smax;s++)
 479                                         {
 480                                                 if (sdtable[s] < maxdist2)
 481                                                 {
 482                                                         ratio = lhrandom(0.0f, 1.0f);
 483                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 484                                                         if (a >= (1.0f / 64.0f))
 485                                                         {
 486                                                                 if (a > 1)
 487                                                                         a = 1;
 488                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 489                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 490                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 491                                                                 stained = true;
 492                                                         }
 493                                                 }
 494                                                 bl += 3;
 495                                         }
 496                                 }
 497                                 else // skip line
 498                                         bl += smax3;
 499                         }
 500                         // force lightmap upload
 501                         if (stained)
 502                                 surf->cached_dlight = true;
 503                 }
 504         }
 505
 506         if (node->children[0]->contents >= 0)
 507         {
 508                 if (node->children[1]->contents >= 0)
 509                 {
 510                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 511                         node = node->children[1];
 512                         goto loc0;
 513                 }
 514                 else
 515                 {
 516                         node = node->children[0];
 517                         goto loc0;
 518                 }
 519         }
 520         else if (node->children[1]->contents >= 0)
 521         {
 522                 node = node->children[1];
 523                 goto loc0;
 524         }
 525 }
 526
 527 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)
 528 {
 529         int n;
 530         float fcolor[8];
 531         entity_render_t *ent;
 532         model_t *model;
 533         vec3_t org;
 534         if (cl.worldmodel == NULL || !cl.worldmodel->brushq1.nodes)
 535                 return;
 536         fcolor[0] = cr1;
 537         fcolor[1] = cg1;
 538         fcolor[2] = cb1;
 539         fcolor[3] = ca1 * (1.0f / 64.0f);
 540         fcolor[4] = cr2 - cr1;
 541         fcolor[5] = cg2 - cg1;
 542         fcolor[6] = cb2 - cb1;
 543         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 544
 545         R_StainNode(cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, cl.worldmodel, origin, radius, fcolor);
 546
 547         // look for embedded bmodels
 548         for (n = 0;n < cl_num_brushmodel_entities;n++)
 549         {
 550                 ent = cl_brushmodel_entities[n];
 551                 model = ent->model;
 552                 if (model && model->name[0] == '*')
 553                 {
 554                         Mod_CheckLoaded(model);
 555                         if (model->brushq1.nodes)
 556                         {
 557                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 558                                 R_StainNode(model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 559                         }
 560                 }
 561         }
 562 }
 563
 564
 565 /*
 566 =============================================================
 567
 568         BRUSH MODELS
 569
 570 =============================================================
 571 */
 572
 573 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 574 {
 575         int i;
 576         float scale;
 577         const qbyte *lm;
 578         if (styles[0] != 255)
 579         {
 580                 for (i = 0;i < numverts;i++, c += 4)
 581                 {
 582                         lm = samples + lightmapoffsets[i];
 583                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 584                         VectorMA(c, scale, lm, c);
 585                         if (styles[1] != 255)
 586                         {
 587                                 lm += size3;
 588                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 589                                 VectorMA(c, scale, lm, c);
 590                                 if (styles[2] != 255)
 591                                 {
 592                                         lm += size3;
 593                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 594                                         VectorMA(c, scale, lm, c);
 595                                         if (styles[3] != 255)
 596                                         {
 597                                                 lm += size3;
 598                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 599                                                 VectorMA(c, scale, lm, c);
 600                                         }
 601                                 }
 602                         }
 603                 }
 604         }
 605 }
 606
 607 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 608 {
 609         int i;
 610         float diff[3], f;
 611         if (fogenabled)
 612         {
 613                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 614                 {
 615                         VectorSubtract(v, modelorg, diff);
 616                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 617                         VectorScale(c, f, c);
 618                 }
 619         }
 620         else if (colorscale != 1)
 621                 for (i = 0;i < numverts;i++, c += 4)
 622                         VectorScale(c, colorscale, c);
 623 }
 624
 625 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)
 626 {
 627         int i;
 628         float diff[3], f;
 629         r *= colorscale;
 630         g *= colorscale;
 631         b *= colorscale;
 632         if (fogenabled)
 633         {
 634                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 635                 {
 636                         VectorSubtract(v, modelorg, diff);
 637                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 638                         c[0] = r * f;
 639                         c[1] = g * f;
 640                         c[2] = b * f;
 641                         c[3] = a;
 642                 }
 643         }
 644         else
 645         {
 646                 for (i = 0;i < numverts;i++, c += 4)
 647                 {
 648                         c[0] = r;
 649                         c[1] = g;
 650                         c[2] = b;
 651                         c[3] = a;
 652                 }
 653         }
 654 }
 655
 656 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)
 657 {
 658         int i;
 659         float diff[3], f;
 660         r *= colorscale;
 661         g *= colorscale;
 662         b *= colorscale;
 663         for (i = 0;i < numverts;i++, v += 3, c += 4)
 664         {
 665                 VectorSubtract(v, modelorg, diff);
 666                 f = exp(fogdensity/DotProduct(diff, diff));
 667                 c[0] = r;
 668                 c[1] = g;
 669                 c[2] = b;
 670                 c[3] = a * f;
 671         }
 672 }
 673
 674 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
 675 {
 676         float f;
 677         const float *v;
 678         float *c;
 679         int i, l, lit = false;
 680         const rdlight_t *rd;
 681         vec3_t lightorigin;
 682         for (l = 0;l < r_numdlights;l++)
 683         {
 684                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 685                 {
 686                         rd = &r_dlight[l];
 687                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 688                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
 689                         {
 690                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 691                                 if (f < rd->cullradius2)
 692                                 {
 693                                         f = ((1.0f / f) - rd->subtract) * scale;
 694                                         VectorMA(c, f, rd->light, c);
 695                                         lit = true;
 696                                 }
 697                         }
 698                 }
 699         }
 700         return lit;
 701 }
 702
 703 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 704 {
 705         const msurface_t *surf;
 706         rmeshstate_t m;
 707
 708         // LordHavoc: HalfLife maps have freaky skypolys...
 709         if (ent->model->brush.ishlbsp)
 710                 return;
 711
 712         if (skyrendernow)
 713         {
 714                 skyrendernow = false;
 715                 if (skyrendermasked)
 716                         R_Sky();
 717         }
 718
 719         R_Mesh_Matrix(&ent->matrix);
 720
 721         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 722         if (skyrendermasked)
 723         {
 724                 // depth-only (masking)
 725                 qglColorMask(0,0,0,0);
 726                 // just to make sure that braindead drivers don't draw anything
 727                 // despite that colormask...
 728                 GL_BlendFunc(GL_ZERO, GL_ONE);
 729         }
 730         else
 731         {
 732                 // fog sky
 733                 GL_BlendFunc(GL_ONE, GL_ZERO);
 734         }
 735         GL_DepthMask(true);
 736         GL_DepthTest(true);
 737
 738         memset(&m, 0, sizeof(m));
 739         R_Mesh_State_Texture(&m);
 740
 741         while((surf = *surfchain++) != NULL)
 742         {
 743                 if (surf->visframe == r_framecount)
 744                 {
 745                         GL_VertexPointer(surf->mesh.data_vertex3f);
 746                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 747                 }
 748         }
 749         qglColorMask(1,1,1,1);
 750 }
 751
 752 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 753 {
 754         const entity_render_t *ent = calldata1;
 755         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 756         rmeshstate_t m;
 757         float alpha;
 758         float modelorg[3];
 759         texture_t *texture;
 760         matrix4x4_t tempmatrix;
 761         float   args[4] = {0.05f,0,0,0.04f};
 762
 763         if (gl_textureshader && r_watershader.value && !fogenabled)
 764         {
 765                 Matrix4x4_CreateTranslate(&tempmatrix, sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 766                 R_Mesh_TextureMatrix(1, &tempmatrix);
 767                 Matrix4x4_CreateFromQuakeEntity(&tempmatrix, 0, 0, 0, 0, 0, 0, r_watershader.value);
 768                 R_Mesh_TextureMatrix(0, &tempmatrix);
 769         }
 770         else if (r_waterscroll.value)
 771         {
 772                 // scrolling in texture matrix
 773                 Matrix4x4_CreateTranslate(&tempmatrix, sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 774                 R_Mesh_TextureMatrix(0, &tempmatrix);
 775         }
 776
 777         R_Mesh_Matrix(&ent->matrix);
 778         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 779
 780         memset(&m, 0, sizeof(m));
 781         texture = surf->texinfo->texture->currentframe;
 782         alpha = texture->currentalpha;
 783         if (texture->rendertype == SURFRENDER_ADD)
 784         {
 785                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 786                 GL_DepthMask(false);
 787         }
 788         else if (texture->rendertype == SURFRENDER_ALPHA)
 789         {
 790                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 791                 GL_DepthMask(false);
 792         }
 793         else
 794         {
 795                 GL_BlendFunc(GL_ONE, GL_ZERO);
 796                 GL_DepthMask(true);
 797         }
 798         if (gl_textureshader && r_watershader.value && !fogenabled)
 799         {
 800                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(cl.time * 16)&63]);
 801                 m.tex[1] = R_GetTexture(texture->skin.base);
 802         }
 803         else
 804                 m.tex[0] = R_GetTexture(texture->skin.base);
 805         GL_DepthTest(true);
 806         if (fogenabled)
 807                 GL_ColorPointer(varray_color4f);
 808         else
 809                 GL_Color(1, 1, 1, alpha);
 810         if (gl_textureshader && r_watershader.value && !fogenabled)
 811         {
 812                 GL_ActiveTexture (0);
 813                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 814                 GL_ActiveTexture (1);
 815                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 816                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 817                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 818                 qglTexEnvfv (GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 819                 qglEnable (GL_TEXTURE_SHADER_NV);
 820         }
 821
 822         GL_VertexPointer(surf->mesh.data_vertex3f);
 823         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 824         m.pointer_texcoord[1] = surf->mesh.data_texcoordtexture2f;
 825         m.texcombinergb[1] = GL_REPLACE;
 826         R_Mesh_State_Texture(&m);
 827         if (fogenabled)
 828         {
 829                 R_FillColors(varray_color4f, surf->mesh.num_vertices, 1, 1, 1, alpha);
 830                 RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, surf->mesh.num_vertices, modelorg);
 831         }
 832         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 833
 834         if (gl_textureshader && r_watershader.value && !fogenabled)
 835         {
 836                 qglDisable (GL_TEXTURE_SHADER_NV);
 837                 GL_ActiveTexture (0);
 838         }
 839
 840         if (fogenabled)
 841         {
 842                 memset(&m, 0, sizeof(m));
 843                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 844                 GL_DepthMask(false);
 845                 GL_DepthTest(true);
 846                 m.tex[0] = R_GetTexture(texture->skin.fog);
 847                 GL_VertexPointer(surf->mesh.data_vertex3f);
 848                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 849                 GL_ColorPointer(varray_color4f);
 850                 R_Mesh_State_Texture(&m);
 851                 RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], alpha, 1, surf->mesh.num_vertices, modelorg);
 852                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 853         }
 854
 855         if ((gl_textureshader && r_watershader.value && !fogenabled) || r_waterscroll.value)
 856         {
 857                 Matrix4x4_CreateIdentity(&tempmatrix);
 858                 R_Mesh_TextureMatrix(0, &tempmatrix);
 859                 R_Mesh_TextureMatrix(1, &tempmatrix);
 860         }
 861 }
 862
 863 static void RSurfShader_Water(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 864 {
 865         const msurface_t *surf;
 866         msurface_t **chain;
 867         vec3_t center;
 868         if (texture->rendertype != SURFRENDER_OPAQUE)
 869         {
 870                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 871                 {
 872                         if (surf->visframe == r_framecount)
 873                         {
 874                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 875                                 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->brushq1.surfaces);
 876                         }
 877                 }
 878         }
 879         else
 880                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 881                         if (surf->visframe == r_framecount)
 882                                 RSurfShader_Water_Callback(ent, surf - ent->model->brushq1.surfaces);
 883 }
 884
 885 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 886 {
 887         float base, colorscale;
 888         rmeshstate_t m;
 889         float modelorg[3];
 890         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 891         memset(&m, 0, sizeof(m));
 892         if (rendertype == SURFRENDER_ADD)
 893         {
 894                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 895                 GL_DepthMask(false);
 896         }
 897         else if (rendertype == SURFRENDER_ALPHA)
 898         {
 899                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 900                 GL_DepthMask(false);
 901         }
 902         else
 903         {
 904                 GL_BlendFunc(GL_ONE, GL_ZERO);
 905                 GL_DepthMask(true);
 906         }
 907         m.tex[0] = R_GetTexture(texture->skin.base);
 908         colorscale = 1;
 909         if (gl_combine.integer)
 910         {
 911                 m.texrgbscale[0] = 4;
 912                 colorscale *= 0.25f;
 913         }
 914         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 915         GL_DepthTest(true);
 916         GL_ColorPointer(varray_color4f);
 917
 918         GL_VertexPointer(surf->mesh.data_vertex3f);
 919         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 920         R_Mesh_State_Texture(&m);
 921         R_FillColors(varray_color4f, surf->mesh.num_vertices, base, base, base, currentalpha);
 922         if (!(ent->effects & EF_FULLBRIGHT))
 923         {
 924                 if (surf->dlightframe == r_framecount)
 925                         RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, surf->mesh.num_vertices, surf->mesh.data_vertex3f, varray_color4f, 1);
 926                 if (surf->flags & SURF_LIGHTMAP)
 927                         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);
 928         }
 929         RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 930         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 931 }
 932
 933 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 934 {
 935         rmeshstate_t m;
 936         float modelorg[3];
 937         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 938         memset(&m, 0, sizeof(m));
 939         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 940         GL_DepthMask(false);
 941         GL_DepthTest(true);
 942         m.tex[0] = R_GetTexture(texture->skin.glow);
 943         GL_ColorPointer(varray_color4f);
 944
 945         GL_VertexPointer(surf->mesh.data_vertex3f);
 946         if (m.tex[0])
 947                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 948         R_Mesh_State_Texture(&m);
 949         RSurf_FoggedColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surf->mesh.num_vertices, modelorg);
 950         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 951 }
 952
 953 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 954 {
 955         rmeshstate_t m;
 956         float modelorg[3];
 957         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 958         memset(&m, 0, sizeof(m));
 959         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 960         GL_DepthMask(false);
 961         GL_DepthTest(true);
 962         m.tex[0] = R_GetTexture(texture->skin.fog);
 963         GL_ColorPointer(varray_color4f);
 964
 965         GL_VertexPointer(surf->mesh.data_vertex3f);
 966         if (m.tex[0])
 967                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 968         R_Mesh_State_Texture(&m);
 969         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surf->mesh.num_vertices, modelorg);
 970         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 971 }
 972
 973 static void RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 974 {
 975         const msurface_t *surf;
 976         rmeshstate_t m;
 977         int lightmaptexturenum;
 978         float cl;
 979         memset(&m, 0, sizeof(m));
 980         GL_BlendFunc(GL_ONE, GL_ZERO);
 981         GL_DepthMask(true);
 982         GL_DepthTest(true);
 983         m.tex[0] = R_GetTexture(texture->skin.base);
 984         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 985         m.tex[2] = R_GetTexture(texture->skin.detail);
 986         m.texrgbscale[0] = 1;
 987         m.texrgbscale[1] = 4;
 988         m.texrgbscale[2] = 2;
 989         cl = (float) (1 << r_lightmapscalebit);
 990         GL_Color(cl, cl, cl, 1);
 991
 992         while((surf = *surfchain++) != NULL)
 993         {
 994                 if (surf->visframe == r_framecount)
 995                 {
 996                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
 997                         //if (m.tex[1] != lightmaptexturenum)
 998                         //{
 999                                 m.tex[1] = lightmaptexturenum;
1000                         //      R_Mesh_State_Texture(&m);
1001                         //}
1002                         GL_VertexPointer(surf->mesh.data_vertex3f);
1003                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1004                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1005                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
1006                         R_Mesh_State_Texture(&m);
1007                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1008                 }
1009         }
1010 }
1011
1012 static void RSurfShader_OpaqueWall_Pass_BaseDoubleTex(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1013 {
1014         const msurface_t *surf;
1015         rmeshstate_t m;
1016         int lightmaptexturenum;
1017         memset(&m, 0, sizeof(m));
1018         GL_BlendFunc(GL_ONE, GL_ZERO);
1019         GL_DepthMask(true);
1020         GL_DepthTest(true);
1021         m.tex[0] = R_GetTexture(texture->skin.base);
1022         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1023         if (gl_combine.integer)
1024                 m.texrgbscale[1] = 4;
1025         GL_Color(1, 1, 1, 1);
1026         while((surf = *surfchain++) != NULL)
1027         {
1028                 if (surf->visframe == r_framecount)
1029                 {
1030                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1031                         //if (m.tex[1] != lightmaptexturenum)
1032                         //{
1033                                 m.tex[1] = lightmaptexturenum;
1034                         //      R_Mesh_State_Texture(&m);
1035                         //}
1036                         GL_VertexPointer(surf->mesh.data_vertex3f);
1037                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1038                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1039                         R_Mesh_State_Texture(&m);
1040                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1041                 }
1042         }
1043 }
1044
1045 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1046 {
1047         const msurface_t *surf;
1048         rmeshstate_t m;
1049         memset(&m, 0, sizeof(m));
1050         GL_DepthMask(true);
1051         GL_DepthTest(true);
1052         GL_BlendFunc(GL_ONE, GL_ZERO);
1053         m.tex[0] = R_GetTexture(texture->skin.base);
1054         GL_Color(1, 1, 1, 1);
1055         while((surf = *surfchain++) != NULL)
1056         {
1057                 if (surf->visframe == r_framecount)
1058                 {
1059                         GL_VertexPointer(surf->mesh.data_vertex3f);
1060                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1061                         R_Mesh_State_Texture(&m);
1062                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1063                 }
1064         }
1065 }
1066
1067 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1068 {
1069         const msurface_t *surf;
1070         rmeshstate_t m;
1071         int lightmaptexturenum;
1072         memset(&m, 0, sizeof(m));
1073         GL_BlendFunc(GL_ZERO, GL_SRC_COLOR);
1074         GL_DepthMask(false);
1075         GL_DepthTest(true);
1076         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1077         if (gl_combine.integer)
1078                 m.texrgbscale[0] = 4;
1079         GL_Color(1, 1, 1, 1);
1080         while((surf = *surfchain++) != NULL)
1081         {
1082                 if (surf->visframe == r_framecount)
1083                 {
1084                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1085                         //if (m.tex[0] != lightmaptexturenum)
1086                         //{
1087                                 m.tex[0] = lightmaptexturenum;
1088                         //      R_Mesh_State_Texture(&m);
1089                         //}
1090                         GL_VertexPointer(surf->mesh.data_vertex3f);
1091                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1092                         R_Mesh_State_Texture(&m);
1093                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1094                 }
1095         }
1096 }
1097
1098 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1099 {
1100         const msurface_t *surf;
1101         rmeshstate_t m;
1102         float modelorg[3];
1103         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1104         memset(&m, 0, sizeof(m));
1105         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1106         GL_DepthMask(false);
1107         GL_DepthTest(true);
1108         GL_ColorPointer(varray_color4f);
1109         while((surf = *surfchain++) != NULL)
1110         {
1111                 if (surf->visframe == r_framecount)
1112                 {
1113                         GL_VertexPointer(surf->mesh.data_vertex3f);
1114                         if (m.tex[0])
1115                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1116                         R_Mesh_State_Texture(&m);
1117                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surf->mesh.num_vertices, modelorg);
1118                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1119                 }
1120         }
1121 }
1122
1123 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1124 {
1125         const msurface_t *surf;
1126         rmeshstate_t m;
1127         memset(&m, 0, sizeof(m));
1128         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1129         GL_DepthMask(false);
1130         GL_DepthTest(true);
1131         m.tex[0] = R_GetTexture(texture->skin.detail);
1132         GL_Color(1, 1, 1, 1);
1133         while((surf = *surfchain++) != NULL)
1134         {
1135                 if (surf->visframe == r_framecount)
1136                 {
1137                         GL_VertexPointer(surf->mesh.data_vertex3f);
1138                         m.pointer_texcoord[0] = surf->mesh.data_texcoorddetail2f;
1139                         R_Mesh_State_Texture(&m);
1140                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1141                 }
1142         }
1143 }
1144
1145 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1146 {
1147         const msurface_t *surf;
1148         rmeshstate_t m;
1149         memset(&m, 0, sizeof(m));
1150         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1151         GL_DepthMask(false);
1152         GL_DepthTest(true);
1153         m.tex[0] = R_GetTexture(texture->skin.glow);
1154         GL_Color(1, 1, 1, 1);
1155         while((surf = *surfchain++) != NULL)
1156         {
1157                 if (surf->visframe == r_framecount)
1158                 {
1159                         GL_VertexPointer(surf->mesh.data_vertex3f);
1160                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1161                         R_Mesh_State_Texture(&m);
1162                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1163                 }
1164         }
1165 }
1166
1167 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1168 {
1169         const msurface_t *surf;
1170         rmeshstate_t m;
1171         memset(&m, 0, sizeof(m));
1172         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1173         GL_DepthMask(true);
1174         m.tex[0] = R_GetTexture(texture->skin.glow);
1175         if (m.tex[0])
1176                 GL_Color(1, 1, 1, 1);
1177         else
1178                 GL_Color(0, 0, 0, 1);
1179         while((surf = *surfchain++) != NULL)
1180         {
1181                 if (surf->visframe == r_framecount)
1182                 {
1183                         GL_VertexPointer(surf->mesh.data_vertex3f);
1184                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1185                         R_Mesh_State_Texture(&m);
1186                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1187                 }
1188         }
1189 }
1190
1191 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1192 {
1193         const entity_render_t *ent = calldata1;
1194         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
1195         int rendertype;
1196         float currentalpha;
1197         texture_t *texture;
1198         R_Mesh_Matrix(&ent->matrix);
1199
1200         texture = surf->texinfo->texture;
1201         if (texture->animated)
1202                 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];
1203
1204         currentalpha = ent->alpha;
1205         if (ent->effects & EF_ADDITIVE)
1206                 rendertype = SURFRENDER_ADD;
1207         else if (currentalpha < 1 || texture->skin.fog != NULL)
1208                 rendertype = SURFRENDER_ALPHA;
1209         else
1210                 rendertype = SURFRENDER_OPAQUE;
1211
1212         RSurfShader_Wall_Pass_BaseVertex(ent, surf, texture, rendertype, currentalpha);
1213         if (texture->skin.glow)
1214                 RSurfShader_Wall_Pass_Glow(ent, surf, texture, rendertype, currentalpha);
1215         if (fogenabled)
1216                 RSurfShader_Wall_Pass_Fog(ent, surf, texture, rendertype, currentalpha);
1217 }
1218
1219 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1220 {
1221         const msurface_t *surf;
1222         msurface_t **chain;
1223         vec3_t center;
1224         if (texture->rendertype != SURFRENDER_OPAQUE)
1225         {
1226                 // transparent vertex shaded from lightmap
1227                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1228                 {
1229                         if (surf->visframe == r_framecount)
1230                         {
1231                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1232                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->brushq1.surfaces);
1233                         }
1234                 }
1235         }
1236         else if (r_shadow_realtime_world.integer)
1237         {
1238                 // opaque base lighting
1239                 RSurfShader_OpaqueWall_Pass_OpaqueGlow(ent, texture, surfchain);
1240                 if (fogenabled)
1241                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1242         }
1243         else
1244         {
1245                 // opaque lightmapped
1246                 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1247                         RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(ent, texture, surfchain);
1248                 else if (r_textureunits.integer >= 2)
1249                 {
1250                         RSurfShader_OpaqueWall_Pass_BaseDoubleTex(ent, texture, surfchain);
1251                         if (r_detailtextures.integer)
1252                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1253                 }
1254                 else
1255                 {
1256                         RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1257                         RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1258                         if (r_detailtextures.integer)
1259                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1260                 }
1261                 if (texture->skin.glow)
1262                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1263                 if (fogenabled)
1264                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1265         }
1266 }
1267
1268 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1269 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1270 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1271
1272 int Cshader_count = 3;
1273 Cshader_t *Cshaders[3] =
1274 {
1275         &Cshader_wall_lightmap,
1276         &Cshader_water,
1277         &Cshader_sky
1278 };
1279
1280 void R_UpdateTextureInfo(entity_render_t *ent)
1281 {
1282         int i, texframe, alttextures;
1283         texture_t *t;
1284
1285         if (!ent->model)
1286                 return;
1287
1288         alttextures = ent->frame != 0;
1289         texframe = (int)(cl.time * 5.0f);
1290         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1291         {
1292                 t = ent->model->brushq1.textures + i;
1293                 t->currentalpha = ent->alpha;
1294                 if (t->flags & SURF_WATERALPHA)
1295                         t->currentalpha *= r_wateralpha.value;
1296                 if (ent->effects & EF_ADDITIVE)
1297                         t->rendertype = SURFRENDER_ADD;
1298                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1299                         t->rendertype = SURFRENDER_ALPHA;
1300                 else
1301                         t->rendertype = SURFRENDER_OPAQUE;
1302                 // we don't need to set currentframe if t->animated is false because
1303                 // it was already set up by the texture loader for non-animating
1304                 if (t->animated)
1305                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1306         }
1307 }
1308
1309 void R_PrepareSurfaces(entity_render_t *ent)
1310 {
1311         int i, numsurfaces, *surfacevisframes;
1312         model_t *model;
1313         msurface_t *surf, *surfaces, **surfchain;
1314         vec3_t modelorg;
1315
1316         if (!ent->model)
1317                 return;
1318
1319         model = ent->model;
1320         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1321         numsurfaces = model->brushq1.nummodelsurfaces;
1322         surfaces = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1323         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1324
1325         R_UpdateTextureInfo(ent);
1326
1327         if (r_dynamic.integer && !r_shadow_realtime_dlight.integer)
1328                 R_MarkLights(ent);
1329
1330         if (model->brushq1.light_ambient != r_ambient.value || model->brushq1.light_scalebit != r_lightmapscalebit)
1331         {
1332                 model->brushq1.light_ambient = r_ambient.value;
1333                 model->brushq1.light_scalebit = r_lightmapscalebit;
1334                 for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
1335                         model->brushq1.surfaces[i + model->brushq1.firstmodelsurface].cached_dlight = true;
1336         }
1337         else
1338         {
1339                 for (i = 0;i < model->brushq1.light_styles;i++)
1340                 {
1341                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1342                         {
1343                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1344                                 for (surfchain = model->brushq1.light_styleupdatechains[i];*surfchain;surfchain++)
1345                                         (**surfchain).cached_dlight = true;
1346                         }
1347                 }
1348         }
1349
1350         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1351         {
1352                 if (surfacevisframes[i] == r_framecount)
1353                 {
1354 #if !WORLDNODECULLBACKFACES
1355                         // mark any backface surfaces as not visible
1356                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1357                         {
1358                                 if (!(surf->flags & SURF_PLANEBACK))
1359                                         surfacevisframes[i] = -1;
1360                         }
1361                         else
1362                         {
1363                                 if ((surf->flags & SURF_PLANEBACK))
1364                                         surfacevisframes[i] = -1;
1365                         }
1366                         if (surfacevisframes[i] == r_framecount)
1367 #endif
1368                         {
1369                                 c_faces++;
1370                                 surf->visframe = r_framecount;
1371                                 if (surf->cached_dlight && surf->lightmaptexture != NULL)
1372                                         R_BuildLightMap(ent, surf);
1373                         }
1374                 }
1375         }
1376 }
1377
1378 void R_DrawSurfaces(entity_render_t *ent, int type, msurface_t ***chains)
1379 {
1380         int i;
1381         texture_t *t;
1382         if (ent->model == NULL)
1383                 return;
1384         R_Mesh_Matrix(&ent->matrix);
1385         for (i = 0, t = ent->model->brushq1.textures;i < ent->model->brushq1.numtextures;i++, t++)
1386                 if (t->shader->shaderfunc[type] && t->currentframe && chains[i] != NULL)
1387                         t->shader->shaderfunc[type](ent, t->currentframe, chains[i]);
1388 }
1389
1390 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1391 {
1392         int i;
1393         float *v;
1394         rmeshstate_t m;
1395         const entity_render_t *ent = calldata1;
1396         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1397         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1398         GL_DepthMask(false);
1399         GL_DepthTest(true);
1400         R_Mesh_Matrix(&ent->matrix);
1401         GL_VertexPointer(varray_vertex3f);
1402
1403         memset(&m, 0, sizeof(m));
1404         R_Mesh_State_Texture(&m);
1405
1406         i = portal - ent->model->brushq1.portals;
1407         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1408                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1409                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1410                          0.125f);
1411         if (PlaneDiff(r_origin, (&portal->plane)) < 0)
1412         {
1413                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1414                         VectorCopy(portal->points[i].position, v);
1415         }
1416         else
1417                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1418                         VectorCopy(portal->points[i].position, v);
1419         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1420 }
1421
1422 // LordHavoc: this is just a nice debugging tool, very slow
1423 static void R_DrawPortals(entity_render_t *ent)
1424 {
1425         int i;
1426         mportal_t *portal, *endportal;
1427         float temp[3], center[3], f;
1428         if (ent->model == NULL)
1429                 return;
1430         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1431         {
1432                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1433                 {
1434                         VectorClear(temp);
1435                         for (i = 0;i < portal->numpoints;i++)
1436                                 VectorAdd(temp, portal->points[i].position, temp);
1437                         f = ixtable[portal->numpoints];
1438                         VectorScale(temp, f, temp);
1439                         Matrix4x4_Transform(&ent->matrix, temp, center);
1440                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1441                 }
1442         }
1443 }
1444
1445 void R_PrepareBrushModel(entity_render_t *ent)
1446 {
1447         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1448         msurface_t *surf;
1449         model_t *model;
1450 #if WORLDNODECULLBACKFACES
1451         vec3_t modelorg;
1452 #endif
1453
1454         // because bmodels can be reused, we have to decide which things to render
1455         // from scratch every time
1456         model = ent->model;
1457         if (model == NULL)
1458                 return;
1459 #if WORLDNODECULLBACKFACES
1460         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1461 #endif
1462         numsurfaces = model->brushq1.nummodelsurfaces;
1463         surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1464         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1465         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1466         for (i = 0;i < numsurfaces;i++, surf++)
1467         {
1468 #if WORLDNODECULLBACKFACES
1469                 // mark any backface surfaces as not visible
1470                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1471                 {
1472                         if ((surf->flags & SURF_PLANEBACK))
1473                                 surfacevisframes[i] = r_framecount;
1474                 }
1475                 else if (!(surf->flags & SURF_PLANEBACK))
1476                         surfacevisframes[i] = r_framecount;
1477 #else
1478                 surfacevisframes[i] = r_framecount;
1479 #endif
1480                 surf->dlightframe = -1;
1481         }
1482         R_PrepareSurfaces(ent);
1483 }
1484
1485 void R_SurfaceWorldNode (entity_render_t *ent)
1486 {
1487         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1488         msurface_t *surf;
1489         mleaf_t *leaf;
1490         model_t *model;
1491         vec3_t modelorg;
1492
1493         // equivilant to quake's RecursiveWorldNode but faster and more effective
1494         model = ent->model;
1495         if (model == NULL)
1496                 return;
1497         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1498         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1499         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1500
1501         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1502         {
1503                 if (!R_CullBox (leaf->mins, leaf->maxs))
1504                 {
1505                         c_leafs++;
1506                         leaf->visframe = r_framecount;
1507                 }
1508         }
1509
1510         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1511         {
1512                 surfnum = model->brushq1.pvssurflist[i];
1513                 surf = model->brushq1.surfaces + surfnum;
1514 #if WORLDNODECULLBACKFACES
1515                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1516                 {
1517                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1518                                 surfacevisframes[surfnum] = r_framecount;
1519                 }
1520                 else
1521                 {
1522                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1523                                 surfacevisframes[surfnum] = r_framecount;
1524                 }
1525 #else
1526                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1527                         surfacevisframes[surfnum] = r_framecount;
1528 #endif
1529         }
1530 }
1531
1532 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1533 {
1534         int c, leafstackpos, *mark, *surfacevisframes, bitnum;
1535 #if WORLDNODECULLBACKFACES
1536         int n;
1537         msurface_t *surf;
1538 #endif
1539         mleaf_t *leaf, *leafstack[8192];
1540         mportal_t *p;
1541         vec3_t modelorg;
1542         msurface_t *surfaces;
1543         if (ent->model == NULL)
1544                 return;
1545         // LordHavoc: portal-passage worldnode with PVS;
1546         // follows portals leading outward from viewleaf, does not venture
1547         // offscreen or into leafs that are not visible, faster than Quake's
1548         // RecursiveWorldNode
1549         surfaces = ent->model->brushq1.surfaces;
1550         surfacevisframes = ent->model->brushq1.surfacevisframes;
1551         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1552         viewleaf->worldnodeframe = r_framecount;
1553         leafstack[0] = viewleaf;
1554         leafstackpos = 1;
1555         while (leafstackpos)
1556         {
1557                 c_leafs++;
1558                 leaf = leafstack[--leafstackpos];
1559                 leaf->visframe = r_framecount;
1560                 // draw any surfaces bounding this leaf
1561                 if (leaf->nummarksurfaces)
1562                 {
1563                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1564                         {
1565 #if WORLDNODECULLBACKFACES
1566                                 n = *mark++;
1567                                 if (surfacevisframes[n] != r_framecount)
1568                                 {
1569                                         surf = surfaces + n;
1570                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1571                                         {
1572                                                 if ((surf->flags & SURF_PLANEBACK))
1573                                                         surfacevisframes[n] = r_framecount;
1574                                         }
1575                                         else
1576                                         {
1577                                                 if (!(surf->flags & SURF_PLANEBACK))
1578                                                         surfacevisframes[n] = r_framecount;
1579                                         }
1580                                 }
1581 #else
1582                                 surfacevisframes[*mark++] = r_framecount;
1583 #endif
1584                         }
1585                 }
1586                 // follow portals into other leafs
1587                 for (p = leaf->portals;p;p = p->next)
1588                 {
1589                         // LordHavoc: this DotProduct hurts less than a cache miss
1590                         // (which is more likely to happen if backflowing through leafs)
1591                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1592                         {
1593                                 leaf = p->past;
1594                                 if (leaf->worldnodeframe != r_framecount)
1595                                 {
1596                                         leaf->worldnodeframe = r_framecount;
1597                                         // FIXME: R_CullBox is absolute, should be done relative
1598                                         bitnum = (leaf - ent->model->brushq1.leafs) - 1;
1599                                         if ((r_pvsbits[bitnum >> 3] & (1 << (bitnum & 7))) && !R_CullBox(leaf->mins, leaf->maxs))
1600                                                 leafstack[leafstackpos++] = leaf;
1601                                 }
1602                         }
1603                 }
1604         }
1605 }
1606
1607 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1608 {
1609         int j, c, *surfacepvsframes, *mark;
1610         mleaf_t *leaf;
1611         model_t *model;
1612
1613         model = ent->model;
1614         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1615         {
1616                 model->brushq1.pvsframecount++;
1617                 model->brushq1.pvsviewleaf = viewleaf;
1618                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1619                 model->brushq1.pvsleafchain = NULL;
1620                 model->brushq1.pvssurflistlength = 0;
1621                 if (viewleaf)
1622                 {
1623                         surfacepvsframes = model->brushq1.surfacepvsframes;
1624                         for (j = 0;j < model->brushq1.visleafs;j++)
1625                         {
1626                                 if (r_pvsbits[j >> 3] & (1 << (j & 7)))
1627                                 {
1628                                         leaf = model->brushq1.leafs + j + 1;
1629                                         leaf->pvsframe = model->brushq1.pvsframecount;
1630                                         leaf->pvschain = model->brushq1.pvsleafchain;
1631                                         model->brushq1.pvsleafchain = leaf;
1632                                         // mark surfaces bounding this leaf as visible
1633                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1634                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1635                                 }
1636                         }
1637                         model->brushq1.BuildPVSTextureChains(model);
1638                 }
1639         }
1640 }
1641
1642 void R_WorldVisibility(entity_render_t *ent)
1643 {
1644         vec3_t modelorg;
1645         mleaf_t *viewleaf;
1646
1647         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1648         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1649         R_PVSUpdate(ent, viewleaf);
1650
1651         if (!viewleaf)
1652                 return;
1653
1654         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1655                 R_SurfaceWorldNode (ent);
1656         else
1657                 R_PortalWorldNode (ent, viewleaf);
1658 }
1659
1660 void R_DrawWorld(entity_render_t *ent)
1661 {
1662         if (ent->model == NULL)
1663                 return;
1664         if (!ent->model->brushq1.numleafs)
1665         {
1666                 if (ent->model->DrawSky)
1667                         ent->model->DrawSky(ent);
1668                 if (ent->model->Draw)
1669                         ent->model->Draw(ent);
1670         }
1671         else
1672         {
1673                 R_PrepareSurfaces(ent);
1674                 R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1675                 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1676                 if (r_drawportals.integer)
1677                         R_DrawPortals(ent);
1678         }
1679 }
1680
1681 void R_Model_Brush_DrawSky(entity_render_t *ent)
1682 {
1683         if (ent->model == NULL)
1684                 return;
1685         if (ent != &cl_entities[0].render)
1686                 R_PrepareBrushModel(ent);
1687         R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1688 }
1689
1690 void R_Model_Brush_Draw(entity_render_t *ent)
1691 {
1692         if (ent->model == NULL)
1693                 return;
1694         c_bmodels++;
1695         if (ent != &cl_entities[0].render)
1696                 R_PrepareBrushModel(ent);
1697         R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1698 }
1699
1700 void R_Model_Brush_DrawShadowVolume (entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1701 {
1702         int i;
1703         msurface_t *surf;
1704         float projectdistance, f, temp[3], lightradius2;
1705         if (ent->model == NULL)
1706                 return;
1707         R_Mesh_Matrix(&ent->matrix);
1708         lightradius2 = lightradius * lightradius;
1709         R_UpdateTextureInfo(ent);
1710         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1711         for (i = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;i < ent->model->brushq1.nummodelsurfaces;i++, surf++)
1712         {
1713                 if (surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && surf->flags & SURF_SHADOWCAST)
1714                 {
1715                         f = PlaneDiff(relativelightorigin, surf->plane);
1716                         if (surf->flags & SURF_PLANEBACK)
1717                                 f = -f;
1718                         // draw shadows only for frontfaces and only if they are close
1719                         if (f >= 0.1 && f < lightradius)
1720                         {
1721                                 temp[0] = bound(surf->poly_mins[0], relativelightorigin[0], surf->poly_maxs[0]) - relativelightorigin[0];
1722                                 temp[1] = bound(surf->poly_mins[1], relativelightorigin[1], surf->poly_maxs[1]) - relativelightorigin[1];
1723                                 temp[2] = bound(surf->poly_mins[2], relativelightorigin[2], surf->poly_maxs[2]) - relativelightorigin[2];
1724                                 if (DotProduct(temp, temp) < lightradius2)
1725                                         R_Shadow_Volume(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_vertex3f, surf->mesh.data_element3i, surf->mesh.data_neighbor3i, relativelightorigin, lightradius, projectdistance);
1726                         }
1727                 }
1728         }
1729 }
1730
1731 void R_Model_Brush_DrawLightForSurfaceList(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, msurface_t **surflist, int numsurfaces, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1732 {
1733         int surfnum;
1734         msurface_t *surf;
1735         texture_t *t;
1736         if (ent->model == NULL)
1737                 return;
1738         R_Mesh_Matrix(&ent->matrix);
1739         R_UpdateTextureInfo(ent);
1740         for (surfnum = 0;surfnum < numsurfaces;surfnum++)
1741         {
1742                 surf = surflist[surfnum];
1743                 if (surf->visframe == r_framecount)
1744                 {
1745                         t = surf->texinfo->texture->currentframe;
1746                         if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1747                         {
1748                                 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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1749                                 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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1750                         }
1751                 }
1752         }
1753 }
1754
1755 void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1756 {
1757         int surfnum;
1758         msurface_t *surf;
1759         texture_t *t;
1760         float f, lightmins[3], lightmaxs[3];
1761         if (ent->model == NULL)
1762                 return;
1763         R_Mesh_Matrix(&ent->matrix);
1764         lightmins[0] = relativelightorigin[0] - lightradius;
1765         lightmins[1] = relativelightorigin[1] - lightradius;
1766         lightmins[2] = relativelightorigin[2] - lightradius;
1767         lightmaxs[0] = relativelightorigin[0] + lightradius;
1768         lightmaxs[1] = relativelightorigin[1] + lightradius;
1769         lightmaxs[2] = relativelightorigin[2] + lightradius;
1770         R_UpdateTextureInfo(ent);
1771         for (surfnum = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;surfnum < ent->model->brushq1.nummodelsurfaces;surfnum++, surf++)
1772         {
1773                 if ((ent != &cl_entities[0].render || surf->visframe == r_framecount) && BoxesOverlap(surf->poly_mins, surf->poly_maxs, lightmins, lightmaxs))
1774                 {
1775                         f = PlaneDiff(relativelightorigin, surf->plane);
1776                         if (surf->flags & SURF_PLANEBACK)
1777                                 f = -f;
1778                         if (f >= -0.1 && f < lightradius)
1779                         {
1780                                 t = surf->texinfo->texture->currentframe;
1781                                 if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1782                                 {
1783                                         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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1784                                         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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1785                                 }
1786                         }
1787                 }
1788         }
1789 }
1790
1791 void R_DrawCollisionBrush(colbrushf_t *brush)
1792 {
1793         int i;
1794         i = ((int)brush) / sizeof(colbrushf_t);
1795         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1796         GL_VertexPointer(brush->points->v);
1797         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1798 }
1799
1800 void R_Q3BSP_DrawSkyFace(entity_render_t *ent, q3mface_t *face)
1801 {
1802         rmeshstate_t m;
1803         if (!face->num_triangles)
1804                 return;
1805         if (skyrendernow)
1806         {
1807                 skyrendernow = false;
1808                 if (skyrendermasked)
1809                         R_Sky();
1810         }
1811
1812         R_Mesh_Matrix(&ent->matrix);
1813
1814         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1815         if (skyrendermasked)
1816         {
1817                 // depth-only (masking)
1818                 qglColorMask(0,0,0,0);
1819                 // just to make sure that braindead drivers don't draw anything
1820                 // despite that colormask...
1821                 GL_BlendFunc(GL_ZERO, GL_ONE);
1822         }
1823         else
1824         {
1825                 // fog sky
1826                 GL_BlendFunc(GL_ONE, GL_ZERO);
1827         }
1828         GL_DepthMask(true);
1829         GL_DepthTest(true);
1830
1831         memset(&m, 0, sizeof(m));
1832         R_Mesh_State_Texture(&m);
1833
1834         GL_VertexPointer(face->data_vertex3f);
1835         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1836         qglColorMask(1,1,1,1);
1837 }
1838
1839 void R_Q3BSP_DrawFace(entity_render_t *ent, q3mface_t *face)
1840 {
1841         rmeshstate_t m;
1842         if (!face->num_triangles)
1843                 return;
1844         if (face->texture->renderflags)
1845         {
1846                 if (face->texture->renderflags & Q3MTEXTURERENDERFLAGS_SKY)
1847                         return;
1848                 if (face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW)
1849                         return;
1850         }
1851         R_Mesh_Matrix(&ent->matrix);
1852         face->visframe = r_framecount;
1853         memset(&m, 0, sizeof(m));
1854         GL_BlendFunc(GL_ONE, GL_ZERO);
1855         GL_DepthMask(true);
1856         GL_DepthTest(true);
1857         m.tex[0] = R_GetTexture(face->texture->skin.base);
1858         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1859         if (face->lightmaptexture)
1860         {
1861                 m.tex[1] = R_GetTexture(face->lightmaptexture);
1862                 m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
1863                 m.texrgbscale[1] = 2;
1864                 GL_Color(1, 1, 1, 1);
1865         }
1866         else
1867         {
1868                 m.texrgbscale[0] = 2;
1869                 GL_ColorPointer(face->data_color4f);
1870         }
1871         R_Mesh_State_Texture(&m);
1872         GL_VertexPointer(face->data_vertex3f);
1873         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1874 }
1875
1876 void R_Q3BSP_RecursiveWorldNode(entity_render_t *ent, q3mnode_t *node, const vec3_t modelorg, qbyte *pvs, int markframe)
1877 {
1878         int i;
1879         q3mleaf_t *leaf;
1880         while (node->isnode)
1881         {
1882                 if (R_CullBox(node->mins, node->maxs))
1883                         return;
1884                 R_Q3BSP_RecursiveWorldNode(ent, node->children[0], modelorg, pvs, markframe);
1885                 node = node->children[1];
1886         }
1887         if (R_CullBox(node->mins, node->maxs))
1888                 return;
1889         leaf = (q3mleaf_t *)node;
1890         if (pvs[leaf->clusterindex >> 3] & (1 << (leaf->clusterindex & 7)))
1891                 for (i = 0;i < leaf->numleaffaces;i++)
1892                         leaf->firstleafface[i]->markframe = markframe;
1893 }
1894
1895 static int r_q3bsp_framecount = -1;
1896
1897 void R_Q3BSP_DrawSky(entity_render_t *ent)
1898 {
1899         int i;
1900         q3mface_t *face;
1901         vec3_t modelorg;
1902         model_t *model;
1903         qbyte *pvs;
1904         R_Mesh_Matrix(&ent->matrix);
1905         model = ent->model;
1906         if (r_drawcollisionbrushes.integer < 2)
1907         {
1908                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1909                 if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1910                 {
1911                         if (r_q3bsp_framecount != r_framecount)
1912                         {
1913                                 r_q3bsp_framecount = r_framecount;
1914                                 R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, r_framecount);
1915                         }
1916                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1917                                 if (face->markframe == r_framecount && (face->texture->renderflags & Q3MTEXTURERENDERFLAGS_SKY) && !R_CullBox(face->mins, face->maxs))
1918                                         R_Q3BSP_DrawSkyFace(ent, face);
1919                 }
1920                 else
1921                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1922                                 if ((face->texture->renderflags & Q3MTEXTURERENDERFLAGS_SKY))
1923                                         R_Q3BSP_DrawSkyFace(ent, face);
1924         }
1925 }
1926
1927 void R_Q3BSP_Draw(entity_render_t *ent)
1928 {
1929         int i;
1930         q3mface_t *face;
1931         vec3_t modelorg;
1932         model_t *model;
1933         qbyte *pvs;
1934         R_Mesh_Matrix(&ent->matrix);
1935         model = ent->model;
1936         if (r_drawcollisionbrushes.integer < 2)
1937         {
1938                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1939                 if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1940                 {
1941                         if (r_q3bsp_framecount != r_framecount)
1942                         {
1943                                 r_q3bsp_framecount = r_framecount;
1944                                 R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, r_framecount);
1945                         }
1946                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1947                                 if (face->markframe == r_framecount && !R_CullBox(face->mins, face->maxs))
1948                                         R_Q3BSP_DrawFace(ent, face);
1949                 }
1950                 else
1951                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1952                                 R_Q3BSP_DrawFace(ent, face);
1953         }
1954         if (r_drawcollisionbrushes.integer >= 1)
1955         {
1956                 rmeshstate_t m;
1957                 memset(&m, 0, sizeof(m));
1958                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1959                 GL_DepthMask(false);
1960                 GL_DepthTest(true);
1961                 R_Mesh_State_Texture(&m);
1962                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
1963                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
1964                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
1965         }
1966 }
1967
1968 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1969 {
1970         int i;
1971         q3mface_t *face;
1972         vec3_t modelorg, lightmins, lightmaxs;
1973         model_t *model;
1974         float projectdistance;
1975         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1976         if (r_drawcollisionbrushes.integer < 2)
1977         {
1978                 model = ent->model;
1979                 R_Mesh_Matrix(&ent->matrix);
1980                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1981                 lightmins[0] = relativelightorigin[0] - lightradius;
1982                 lightmins[1] = relativelightorigin[1] - lightradius;
1983                 lightmins[2] = relativelightorigin[2] - lightradius;
1984                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1985                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1986                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1987                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1988                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
1989                 //else
1990                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1991                                 if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
1992                                         R_Shadow_Volume(face->num_vertices, face->num_triangles, face->data_vertex3f, face->data_element3i, face->data_neighbor3i, relativelightorigin, lightradius, projectdistance);
1993         }
1994 }
1995
1996 void R_Q3BSP_DrawFaceLight(entity_render_t *ent, q3mface_t *face, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1997 {
1998         if ((face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW) || !face->num_triangles)
1999                 return;
2000         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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.base, face->texture->skin.nmap, NULL);
2001         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, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.gloss, face->texture->skin.nmap, NULL);
2002 }
2003
2004 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
2005 {
2006         int i;
2007         q3mface_t *face;
2008         vec3_t modelorg, lightmins, lightmaxs;
2009         model_t *model;
2010         //qbyte *pvs;
2011         //static int markframe = 0;
2012         if (r_drawcollisionbrushes.integer < 2)
2013         {
2014                 model = ent->model;
2015                 R_Mesh_Matrix(&ent->matrix);
2016                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
2017                 lightmins[0] = relativelightorigin[0] - lightradius;
2018                 lightmins[1] = relativelightorigin[1] - lightradius;
2019                 lightmins[2] = relativelightorigin[2] - lightradius;
2020                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2021                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2022                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2023                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
2024                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
2025                 //else
2026                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2027                                 if ((ent != &cl_entities[0].render || face->visframe == r_framecount) && BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2028                                         R_Q3BSP_DrawFaceLight(ent, face, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz);
2029         }
2030 }
2031
2032 static void gl_surf_start(void)
2033 {
2034 }
2035
2036 static void gl_surf_shutdown(void)
2037 {
2038 }
2039
2040 static void gl_surf_newmap(void)
2041 {
2042 }
2043
2044 void GL_Surf_Init(void)
2045 {
2046         int i;
2047         dlightdivtable[0] = 4194304;
2048         for (i = 1;i < 32768;i++)
2049                 dlightdivtable[i] = 4194304 / (i << 7);
2050
2051         Cvar_RegisterVariable(&r_ambient);
2052         Cvar_RegisterVariable(&r_drawportals);
2053         Cvar_RegisterVariable(&r_testvis);
2054         Cvar_RegisterVariable(&r_floatbuildlightmap);
2055         Cvar_RegisterVariable(&r_detailtextures);
2056         Cvar_RegisterVariable(&r_surfaceworldnode);
2057         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2058
2059         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2060 }
2061