gl_rsurf.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23
  24 #define MAX_LIGHTMAP_SIZE 256
  25
  26 static signed int blocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  27
  28 static byte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  29
  30 cvar_t r_ambient = {0, "r_ambient", "0"};
  31 cvar_t r_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
  32 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
  33 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  34 cvar_t r_testvis = {0, "r_testvis", "0"};
  35
  36 static void gl_surf_start(void)
  37 {
  38 }
  39
  40 static void gl_surf_shutdown(void)
  41 {
  42 }
  43
  44 static void gl_surf_newmap(void)
  45 {
  46 }
  47
  48 void GL_Surf_Init(void)
  49 {
  50         Cvar_RegisterVariable(&r_ambient);
  51         Cvar_RegisterVariable(&r_vertexsurfaces);
  52         Cvar_RegisterVariable(&r_dlightmap);
  53         Cvar_RegisterVariable(&r_drawportals);
  54         Cvar_RegisterVariable(&r_testvis);
  55
  56         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
  57 }
  58
  59 static int dlightdivtable[32768];
  60
  61 static int R_AddDynamicLights (msurface_t *surf)
  62 {
  63         int         sdtable[18], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract;
  64         unsigned int *bl;
  65         float       dist;
  66         vec3_t      impact, local;
  67
  68         // LordHavoc: use 64bit integer...  shame it's not very standardized...
  69 #if _MSC_VER || __BORLANDC__
  70         __int64     k;
  71 #else
  72         long long   k;
  73 #endif
  74
  75         lit = false;
  76
  77         if (!dlightdivtable[1])
  78         {
  79                 dlightdivtable[0] = 4194304;
  80                 for (s = 1; s < 32768; s++)
  81                         dlightdivtable[s] = 4194304 / (s << 7);
  82         }
  83
  84         smax = (surf->extents[0] >> 4) + 1;
  85         tmax = (surf->extents[1] >> 4) + 1;
  86
  87         for (lnum = 0; lnum < r_numdlights; lnum++)
  88         {
  89                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  90                         continue;                                       // not lit by this light
  91
  92                 softwareuntransform(r_dlight[lnum].origin, local);
  93 //              VectorSubtract (r_dlight[lnum].origin, currentrenderentity->origin, local);
  94                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  95
  96                 // for comparisons to minimum acceptable light
  97                 maxdist = (int) r_dlight[lnum].cullradius2;
  98
  99                 // already clamped, skip this
 100                 // clamp radius to avoid exceeding 32768 entry division table
 101                 //if (maxdist > 4194304)
 102                 //      maxdist = 4194304;
 103
 104                 dist2 = dist * dist;
 105                 dist2 += LIGHTOFFSET;
 106                 if (dist2 >= maxdist)
 107                         continue;
 108
 109                 impact[0] = local[0] - surf->plane->normal[0] * dist;
 110                 impact[1] = local[1] - surf->plane->normal[1] * dist;
 111                 impact[2] = local[2] - surf->plane->normal[2] * dist;
 112
 113                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 114                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 115
 116                 s = bound(0, impacts, smax * 16) - impacts;
 117                 t = bound(0, impactt, tmax * 16) - impactt;
 118                 i = s * s + t * t + dist2;
 119                 if (i > maxdist)
 120                         continue;
 121
 122                 // reduce calculations
 123                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 124                         sdtable[s] = i * i + dist2;
 125
 126                 maxdist3 = maxdist - dist2;
 127
 128                 // convert to 8.8 blocklights format
 129                 red = r_dlight[lnum].light[0];
 130                 green = r_dlight[lnum].light[1];
 131                 blue = r_dlight[lnum].light[2];
 132                 subtract = (int) (r_dlight[lnum].lightsubtract * 4194304.0f);
 133                 bl = blocklights;
 134                 smax3 = smax * 3;
 135
 136                 i = impactt;
 137                 for (t = 0;t < tmax;t++, i -= 16)
 138                 {
 139                         td = i * i;
 140                         // make sure some part of it is visible on this line
 141                         if (td < maxdist3)
 142                         {
 143                                 maxdist2 = maxdist - td;
 144                                 for (s = 0;s < smax;s++)
 145                                 {
 146                                         if (sdtable[s] < maxdist2)
 147                                         {
 148                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 149                                                 if (k > 0)
 150                                                 {
 151                                                         bl[0] += (red   * k) >> 8;
 152                                                         bl[1] += (green * k) >> 8;
 153                                                         bl[2] += (blue  * k) >> 8;
 154                                                         lit = true;
 155                                                 }
 156                                         }
 157                                         bl += 3;
 158                                 }
 159                         }
 160                         else // skip line
 161                                 bl += smax3;
 162                 }
 163         }
 164         return lit;
 165 }
 166
 167 /*
 168 ===============
 169 R_BuildLightMap
 170
 171 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 172 ===============
 173 */
 174 static void R_BuildLightMap (msurface_t *surf, int dlightchanged)
 175 {
 176         int             smax, tmax, i, j, size, size3, shift, scale, maps, *bl, stride, l;
 177         byte    *lightmap, *out;
 178
 179         // update cached lighting info
 180         surf->cached_dlight = 0;
 181         surf->cached_lightscalebit = lightscalebit;
 182         surf->cached_ambient = r_ambient.value;
 183         surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 184         surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 185         surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 186         surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 187
 188         smax = (surf->extents[0]>>4)+1;
 189         tmax = (surf->extents[1]>>4)+1;
 190         size = smax*tmax;
 191         size3 = size*3;
 192         lightmap = surf->samples;
 193
 194 // set to full bright if no light data
 195         if ((currentrenderentity->effects & EF_FULLBRIGHT) || !cl.worldmodel->lightdata)
 196         {
 197                 bl = blocklights;
 198                 for (i = 0;i < size;i++)
 199                 {
 200                         *bl++ = 255*256;
 201                         *bl++ = 255*256;
 202                         *bl++ = 255*256;
 203                 }
 204         }
 205         else
 206         {
 207 // clear to no light
 208                 j = r_ambient.value * 512.0f; // would be 256.0f logically, but using 512.0f to match winquake style
 209                 if (j)
 210                 {
 211                         bl = blocklights;
 212                         for (i = 0;i < size3;i++)
 213                                 *bl++ = j;
 214                 }
 215                 else
 216                         memset(&blocklights[0], 0, size*3*sizeof(int));
 217
 218                 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 219                 {
 220                         surf->cached_dlight = R_AddDynamicLights(surf);
 221                         if (surf->cached_dlight)
 222                                 c_light_polys++;
 223                         else if (dlightchanged)
 224                                 return; // don't upload if only updating dlights and none mattered
 225                 }
 226
 227 // add all the lightmaps
 228                 if (lightmap)
 229                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
 230                                 for (scale = d_lightstylevalue[surf->styles[maps]], bl = blocklights, i = 0;i < size3;i++)
 231                                         *bl++ += *lightmap++ * scale;
 232         }
 233
 234         bl = blocklights;
 235         out = templight;
 236         // deal with lightmap brightness scale
 237         shift = 7 + lightscalebit;
 238         if (currentrenderentity->model->lightmaprgba)
 239         {
 240                 stride = (surf->lightmaptexturestride - smax) * 4;
 241                 for (i = 0;i < tmax;i++, out += stride)
 242                 {
 243                         for (j = 0;j < smax;j++)
 244                         {
 245                                 l = *bl++ >> shift;*out++ = min(l, 255);
 246                                 l = *bl++ >> shift;*out++ = min(l, 255);
 247                                 l = *bl++ >> shift;*out++ = min(l, 255);
 248                                 *out++ = 255;
 249                         }
 250                 }
 251         }
 252         else
 253         {
 254                 stride = (surf->lightmaptexturestride - smax) * 3;
 255                 for (i = 0;i < tmax;i++, out += stride)
 256                 {
 257                         for (j = 0;j < smax;j++)
 258                         {
 259                                 l = *bl++ >> shift;*out++ = min(l, 255);
 260                                 l = *bl++ >> shift;*out++ = min(l, 255);
 261                                 l = *bl++ >> shift;*out++ = min(l, 255);
 262                         }
 263                 }
 264         }
 265
 266         R_UpdateTexture(surf->lightmaptexture, templight);
 267 }
 268
 269 /*
 270 ===============
 271 R_TextureAnimation
 272
 273 Returns the proper texture for a given time and base texture
 274 ===============
 275 */
 276 /*
 277 // note: this was manually inlined in R_PrepareSurfaces
 278 static texture_t *R_TextureAnimation (texture_t *base)
 279 {
 280         if (currentrenderentity->frame && base->alternate_anims != NULL)
 281                 base = base->alternate_anims;
 282
 283         if (base->anim_total < 2)
 284                 return base;
 285
 286         return base->anim_frames[(int)(cl.time * 5.0f) % base->anim_total];
 287 }
 288 */
 289
 290
 291 /*
 292 =============================================================
 293
 294         BRUSH MODELS
 295
 296 =============================================================
 297 */
 298
 299
 300 static float turbsin[256] =
 301 {
 302         #include "gl_warp_sin.h"
 303 };
 304 #define TURBSCALE (256.0 / (2 * M_PI))
 305
 306 #define MAX_SURFVERTS 1024
 307 typedef struct
 308 {
 309         float v[4];
 310         float st[2];
 311         float uv[2];
 312         float c[4];
 313 }
 314 surfvert_t;
 315 static surfvert_t svert[MAX_SURFVERTS]; // used by the following functions
 316
 317 static int RSurfShader_Sky(int stage, msurface_t *s)
 318 {
 319         int                             i;
 320         float                   number, length, dir[3], speedscale;
 321         surfvertex_t    *v;
 322         surfvert_t              *sv;
 323         rmeshinfo_t             m;
 324
 325         // LordHavoc: HalfLife maps have freaky skypolys...
 326         if (currentrenderentity->model->ishlbsp)
 327                 return true;
 328
 329         if (stage == 0)
 330         {
 331                 if (skyrendermasked)
 332                 {
 333                         if (skyrendernow)
 334                         {
 335                                 skyrendernow = false;
 336                                 R_Sky();
 337                         }
 338                         // draw depth-only polys
 339                         memset(&m, 0, sizeof(m));
 340                         m.transparent = false;
 341                         m.blendfunc1 = GL_ZERO;
 342                         m.blendfunc2 = GL_ONE;
 343                         m.depthwrite = true;
 344                         m.numtriangles = s->mesh.numtriangles;
 345                         m.numverts = s->mesh.numverts;
 346                         m.index = s->mesh.index;
 347                         //m.cr = 0;
 348                         //m.cg = 0;
 349                         //m.cb = 0;
 350                         //m.ca = 0;
 351                         if (softwaretransform_complexity)
 352                         {
 353                                 m.vertex = &svert[0].v[0];
 354                                 m.vertexstep = sizeof(surfvert_t);
 355                                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 356                                         softwaretransform(v->v, sv->v);
 357                         }
 358                         else
 359                         {
 360                                 m.vertex = &s->mesh.vertex[0].v[0];
 361                                 m.vertexstep = sizeof(surfvertex_t);
 362                         }
 363                         R_Mesh_Draw(&m);
 364                 }
 365                 else if (skyrenderglquake)
 366                 {
 367                         memset(&m, 0, sizeof(m));
 368                         m.transparent = false;
 369                         m.blendfunc1 = GL_ONE;
 370                         m.blendfunc2 = GL_ZERO;
 371                         m.numtriangles = s->mesh.numtriangles;
 372                         m.numverts = s->mesh.numverts;
 373                         m.index = s->mesh.index;
 374                         m.vertex = &svert[0].v[0];
 375                         m.vertexstep = sizeof(surfvert_t);
 376                         m.cr = 1;
 377                         m.cg = 1;
 378                         m.cb = 1;
 379                         m.ca = 1;
 380                         if (r_mergesky.integer)
 381                                 m.tex[0] = R_GetTexture(mergeskytexture);
 382                         else
 383                                 m.tex[0] = R_GetTexture(solidskytexture);
 384                         m.texcoords[0] = &svert[0].st[0];
 385                         m.texcoordstep[0] = sizeof(surfvert_t);
 386                         speedscale = cl.time * (8.0/128.0);
 387                         speedscale -= (int)speedscale;
 388                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 389                         {
 390                                 softwaretransform(v->v, sv->v);
 391                                 VectorSubtract (sv->v, r_origin, dir);
 392                                 // flatten the sphere
 393                                 dir[2] *= 3;
 394
 395                                 number = DotProduct(dir, dir);
 396                                 #if SLOWMATH
 397                                 length = 3.0f / sqrt(number);
 398                                 #else
 399                                 *((long *)&length) = 0x5f3759df - ((* (long *) &number) >> 1);
 400                                 length = 3.0f * (length * (1.5f - (number * 0.5f * length * length)));
 401                                 #endif
 402
 403                                 sv->st[0] = speedscale + dir[0] * length;
 404                                 sv->st[1] = speedscale + dir[1] * length;
 405                         }
 406                         R_Mesh_Draw(&m);
 407                 }
 408                 else
 409                 {
 410                         // flat color
 411                         memset(&m, 0, sizeof(m));
 412                         m.transparent = false;
 413                         m.blendfunc1 = GL_ONE;
 414                         m.blendfunc2 = GL_ZERO;
 415                         m.numtriangles = s->mesh.numtriangles;
 416                         m.numverts = s->mesh.numverts;
 417                         m.index = s->mesh.index;
 418                         m.cr = fogcolor[0];
 419                         m.cg = fogcolor[1];
 420                         m.cb = fogcolor[2];
 421                         m.ca = 1;
 422                         if (softwaretransform_complexity)
 423                         {
 424                                 m.vertex = &svert[0].v[0];
 425                                 m.vertexstep = sizeof(surfvert_t);
 426                                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 427                                         softwaretransform(v->v, sv->v);
 428                         }
 429                         else
 430                         {
 431                                 m.vertex = &s->mesh.vertex[0].v[0];
 432                                 m.vertexstep = sizeof(surfvertex_t);
 433                         }
 434                         R_Mesh_Draw(&m);
 435                 }
 436                 return false;
 437         }
 438         else if (stage == 1)
 439         {
 440                 if (skyrenderglquake && !r_mergesky.integer)
 441                 {
 442                         memset(&m, 0, sizeof(m));
 443                         m.transparent = false;
 444                         m.blendfunc1 = GL_SRC_ALPHA;
 445                         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 446                         m.numtriangles = s->mesh.numtriangles;
 447                         m.numverts = s->mesh.numverts;
 448                         m.index = s->mesh.index;
 449                         m.vertex = &svert[0].v[0];
 450                         m.vertexstep = sizeof(surfvert_t);
 451                         m.cr = 1;
 452                         m.cg = 1;
 453                         m.cb = 1;
 454                         m.ca = 1;
 455                         m.tex[0] = R_GetTexture(alphaskytexture);
 456                         m.texcoords[0] = &svert[0].st[0];
 457                         m.texcoordstep[0] = sizeof(surfvert_t);
 458                         speedscale = cl.time * (16.0/128.0);
 459                         speedscale -= (int)speedscale;
 460                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 461                         {
 462                                 softwaretransform(v->v, sv->v);
 463                                 VectorSubtract (sv->v, r_origin, dir);
 464                                 // flatten the sphere
 465                                 dir[2] *= 3;
 466
 467                                 number = DotProduct(dir, dir);
 468                                 #if SLOWMATH
 469                                 length = 3.0f / sqrt(number);
 470                                 #else
 471                                 *((long *)&length) = 0x5f3759df - ((* (long *) &number) >> 1);
 472                                 length = 3.0f * (length * (1.5f - (number * 0.5f * length * length)));
 473                                 #endif
 474
 475                                 sv->st[0] = speedscale + dir[0] * length;
 476                                 sv->st[1] = speedscale + dir[1] * length;
 477                         }
 478                         R_Mesh_Draw(&m);
 479                         return false;
 480                 }
 481                 return true;
 482         }
 483         else
 484                 return true;
 485 }
 486
 487 static int RSurf_Light(int *dlightbits, int numverts)
 488 {
 489         float           f;
 490         int                     i, l, lit = false;
 491         rdlight_t       *rd;
 492         vec3_t          lightorigin;
 493         surfvert_t      *sv;
 494         for (l = 0;l < r_numdlights;l++)
 495         {
 496                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 497                 {
 498                         rd = &r_dlight[l];
 499                         // FIXME: support softwareuntransform here and make bmodels use hardware transform?
 500                         VectorCopy(rd->origin, lightorigin);
 501                         for (i = 0, sv = svert;i < numverts;i++, sv++)
 502                         {
 503                                 f = VectorDistance2(sv->v, lightorigin) + LIGHTOFFSET;
 504                                 if (f < rd->cullradius2)
 505                                 {
 506                                         f = (1.0f / f) - rd->lightsubtract;
 507                                         sv->c[0] += rd->light[0] * f;
 508                                         sv->c[1] += rd->light[1] * f;
 509                                         sv->c[2] += rd->light[2] * f;
 510                                         lit = true;
 511                                 }
 512                         }
 513                 }
 514         }
 515         return lit;
 516 }
 517
 518 static void RSurfShader_Water_Pass_Base(msurface_t *s)
 519 {
 520         int                             i;
 521         float                   diff[3], alpha, ifog;
 522         surfvertex_t    *v;
 523         surfvert_t              *sv;
 524         rmeshinfo_t             m;
 525         alpha = s->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value;
 526
 527         memset(&m, 0, sizeof(m));
 528         if (alpha != 1 || s->currenttexture->fogtexture != NULL)
 529         {
 530                 m.transparent = true;
 531                 m.blendfunc1 = GL_SRC_ALPHA;
 532                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 533         }
 534         else
 535         {
 536                 m.transparent = false;
 537                 m.blendfunc1 = GL_SRC_ALPHA;
 538                 m.blendfunc2 = GL_ZERO;
 539         }
 540         m.numtriangles = s->mesh.numtriangles;
 541         m.numverts = s->mesh.numverts;
 542         m.index = s->mesh.index;
 543         m.vertex = &svert[0].v[0];
 544         m.vertexstep = sizeof(surfvert_t);
 545         m.color = &svert[0].c[0];
 546         m.colorstep = sizeof(surfvert_t);
 547         m.tex[0] = R_GetTexture(s->currenttexture->texture);
 548         m.texcoords[0] = &svert[0].st[0];
 549         m.texcoordstep[0] = sizeof(surfvert_t);
 550         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 551         {
 552                 softwaretransform(v->v, sv->v);
 553                 if (r_waterripple.value)
 554                         sv->v[2] += r_waterripple.value * (1.0f / 64.0f) * turbsin[(int)((v->v[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((v->v[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255];
 555                 if (s->flags & SURF_DRAWFULLBRIGHT)
 556                 {
 557                         sv->c[0] = 1;
 558                         sv->c[1] = 1;
 559                         sv->c[2] = 1;
 560                         sv->c[3] = alpha;
 561                 }
 562                 else
 563                 {
 564                         sv->c[0] = 0.5f;
 565                         sv->c[1] = 0.5f;
 566                         sv->c[2] = 0.5f;
 567                         sv->c[3] = alpha;
 568                 }
 569                 sv->st[0] = (v->st[0] + turbsin[(int)((v->st[1]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 570                 sv->st[1] = (v->st[1] + turbsin[(int)((v->st[0]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 571         }
 572         if (s->dlightframe == r_framecount && !(s->flags & SURF_DRAWFULLBRIGHT))
 573                 RSurf_Light(s->dlightbits, m.numverts);
 574         if (fogenabled)
 575         {
 576                 for (i = 0, sv = svert;i < m.numverts;i++, sv++)
 577                 {
 578                         VectorSubtract(sv->v, r_origin, diff);
 579                         ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 580                         sv->c[0] *= ifog;
 581                         sv->c[1] *= ifog;
 582                         sv->c[2] *= ifog;
 583                 }
 584         }
 585         R_Mesh_Draw(&m);
 586 }
 587
 588 static void RSurfShader_Water_Pass_Glow(msurface_t *s)
 589 {
 590         int                             i;
 591         float                   diff[3], alpha, ifog;
 592         surfvertex_t    *v;
 593         surfvert_t              *sv;
 594         rmeshinfo_t             m;
 595         alpha = s->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value;
 596
 597         memset(&m, 0, sizeof(m));
 598         m.transparent = alpha != 1 || s->currenttexture->fogtexture != NULL;
 599         m.blendfunc1 = GL_SRC_ALPHA;
 600         m.blendfunc2 = GL_ONE;
 601         m.numtriangles = s->mesh.numtriangles;
 602         m.numverts = s->mesh.numverts;
 603         m.index = s->mesh.index;
 604         m.vertex = &svert[0].v[0];
 605         m.vertexstep = sizeof(surfvert_t);
 606         m.cr = 1;
 607         m.cg = 1;
 608         m.cb = 1;
 609         m.ca = alpha;
 610         m.tex[0] = R_GetTexture(s->currenttexture->glowtexture);
 611         m.texcoords[0] = &svert[0].st[0];
 612         m.texcoordstep[0] = sizeof(surfvert_t);
 613         if (fogenabled)
 614         {
 615                 m.color = &svert[0].c[0];
 616                 m.colorstep = sizeof(surfvert_t);
 617                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 618                 {
 619                         softwaretransform(v->v, sv->v);
 620                         if (r_waterripple.value)
 621                                 sv->v[2] += r_waterripple.value * (1.0f / 64.0f) * turbsin[(int)((v->v[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((v->v[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255];
 622                         sv->st[0] = (v->st[0] + turbsin[(int)((v->st[1]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 623                         sv->st[1] = (v->st[1] + turbsin[(int)((v->st[0]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 624                         VectorSubtract(sv->v, r_origin, diff);
 625                         ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 626                         sv->c[0] = m.cr * ifog;
 627                         sv->c[1] = m.cg * ifog;
 628                         sv->c[2] = m.cb * ifog;
 629                         sv->c[3] = m.ca;
 630                 }
 631         }
 632         else
 633         {
 634                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 635                 {
 636                         softwaretransform(v->v, sv->v);
 637                         if (r_waterripple.value)
 638                                 sv->v[2] += r_waterripple.value * (1.0f / 64.0f) * turbsin[(int)((v->v[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((v->v[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255];
 639                         sv->st[0] = (v->st[0] + turbsin[(int)((v->st[1]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 640                         sv->st[1] = (v->st[1] + turbsin[(int)((v->st[0]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 641                 }
 642         }
 643         R_Mesh_Draw(&m);
 644 }
 645
 646 static void RSurfShader_Water_Pass_Fog(msurface_t *s)
 647 {
 648         int                             i;
 649         float                   alpha;
 650         surfvertex_t    *v;
 651         surfvert_t              *sv;
 652         rmeshinfo_t             m;
 653         vec3_t                  diff;
 654         alpha = s->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value;
 655
 656         memset(&m, 0, sizeof(m));
 657         m.transparent = alpha != 1 || s->currenttexture->fogtexture != NULL;
 658         m.blendfunc1 = GL_SRC_ALPHA;
 659         m.blendfunc2 = GL_ONE;
 660         m.numtriangles = s->mesh.numtriangles;
 661         m.numverts = s->mesh.numverts;
 662         m.index = s->mesh.index;
 663         m.vertex = &svert[0].v[0];
 664         m.vertexstep = sizeof(surfvert_t);
 665         m.color = &svert[0].c[0];
 666         m.colorstep = sizeof(surfvert_t);
 667         m.tex[0] = R_GetTexture(s->currenttexture->fogtexture);
 668         m.texcoords[0] = &svert[0].st[0];
 669         m.texcoordstep[0] = sizeof(surfvert_t);
 670
 671         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 672         {
 673                 softwaretransform(v->v, sv->v);
 674                 if (r_waterripple.value)
 675                         sv->v[2] += r_waterripple.value * (1.0f / 64.0f) * turbsin[(int)((v->v[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((v->v[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255];
 676                 if (m.tex[0])
 677                 {
 678                         sv->st[0] = (v->st[0] + turbsin[(int)((v->st[1]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 679                         sv->st[1] = (v->st[1] + turbsin[(int)((v->st[0]*0.125f+cl.time) * TURBSCALE) & 255]) * (1.0f / 64.0f);
 680                 }
 681                 VectorSubtract(sv->v, r_origin, diff);
 682                 sv->c[0] = fogcolor[0];
 683                 sv->c[1] = fogcolor[1];
 684                 sv->c[2] = fogcolor[2];
 685                 sv->c[3] = alpha * exp(fogdensity/DotProduct(diff, diff));
 686         }
 687         R_Mesh_Draw(&m);
 688 }
 689
 690 static int RSurfShader_Water(int stage, msurface_t *s)
 691 {
 692         switch(stage)
 693         {
 694         case 0:
 695                 RSurfShader_Water_Pass_Base(s);
 696                 return false;
 697         case 1:
 698                 if (s->currenttexture->glowtexture)
 699                         RSurfShader_Water_Pass_Glow(s);
 700                 return false;
 701         case 2:
 702                 if (fogenabled)
 703                 {
 704                         RSurfShader_Water_Pass_Fog(s);
 705                         return false;
 706                 }
 707                 else
 708                         return true;
 709         default:
 710                 return true;
 711         }
 712 }
 713
 714 static void RSurfShader_Wall_Pass_BaseMTex(msurface_t *s)
 715 {
 716         int                             i;
 717         float                   diff[3], ifog;
 718         surfvertex_t    *v;
 719         surfvert_t              *sv;
 720         rmeshinfo_t             m;
 721
 722         memset(&m, 0, sizeof(m));
 723         if (currentrenderentity->effects & EF_ADDITIVE)
 724         {
 725                 m.transparent = true;
 726                 m.blendfunc1 = GL_SRC_ALPHA;
 727                 m.blendfunc2 = GL_ONE;
 728         }
 729         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1))
 730         {
 731                 m.transparent = true;
 732                 m.blendfunc1 = GL_SRC_ALPHA;
 733                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 734         }
 735         else
 736         {
 737                 m.transparent = false;
 738                 m.blendfunc1 = GL_ONE;
 739                 m.blendfunc2 = GL_ZERO;
 740         }
 741         m.numtriangles = s->mesh.numtriangles;
 742         m.numverts = s->mesh.numverts;
 743         m.index = s->mesh.index;
 744         m.cr = 1;
 745         if (lighthalf)
 746                 m.cr *= 2;
 747         if (gl_combine.integer)
 748                 m.cr *= 4;
 749         m.cg = m.cr;
 750         m.cb = m.cr;
 751         m.ca = 1;
 752         m.tex[0] = R_GetTexture(s->currenttexture->texture);
 753         m.tex[1] = R_GetTexture(s->lightmaptexture);
 754         m.texcoords[0] = &s->mesh.vertex->st[0];
 755         m.texcoords[1] = &s->mesh.vertex->uv[0];
 756         m.texcoordstep[0] = sizeof(surfvertex_t);
 757         m.texcoordstep[1] = sizeof(surfvertex_t);
 758         if (fogenabled)
 759         {
 760                 m.color = &svert[0].c[0];
 761                 m.colorstep = sizeof(surfvert_t);
 762                 if (softwaretransform_complexity)
 763                 {
 764                         m.vertex = &svert[0].v[0];
 765                         m.vertexstep = sizeof(surfvert_t);
 766                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 767                         {
 768                                 softwaretransform(v->v, sv->v);
 769                                 VectorSubtract(sv->v, r_origin, diff);
 770                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 771                                 sv->c[0] = m.cr * ifog;
 772                                 sv->c[1] = m.cg * ifog;
 773                                 sv->c[2] = m.cb * ifog;
 774                                 sv->c[3] = m.ca;
 775                         }
 776                 }
 777                 else
 778                 {
 779                         m.vertex = &s->mesh.vertex->v[0];
 780                         m.vertexstep = sizeof(surfvertex_t);
 781                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 782                         {
 783                                 VectorSubtract(v->v, r_origin, diff);
 784                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 785                                 sv->c[0] = m.cr * ifog;
 786                                 sv->c[1] = m.cg * ifog;
 787                                 sv->c[2] = m.cb * ifog;
 788                                 sv->c[3] = m.ca;
 789                         }
 790                 }
 791         }
 792         else
 793         {
 794                 if (softwaretransform_complexity)
 795                 {
 796                         m.vertex = &svert[0].v[0];
 797                         m.vertexstep = sizeof(surfvert_t);
 798                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 799                                 softwaretransform(v->v, sv->v);
 800                 }
 801                 else
 802                 {
 803                         m.vertex = &s->mesh.vertex->v[0];
 804                         m.vertexstep = sizeof(surfvertex_t);
 805                 }
 806         }
 807         R_Mesh_Draw(&m);
 808 }
 809
 810 static void RSurfShader_Wall_Pass_BaseTexture(msurface_t *s)
 811 {
 812         int                             i;
 813         surfvertex_t    *v;
 814         surfvert_t              *sv;
 815         rmeshinfo_t             m;
 816
 817         memset(&m, 0, sizeof(m));
 818         m.transparent = false;
 819         m.blendfunc1 = GL_ONE;
 820         m.blendfunc2 = GL_ZERO;
 821         m.numtriangles = s->mesh.numtriangles;
 822         m.numverts = s->mesh.numverts;
 823         m.index = s->mesh.index;
 824         if (lighthalf)
 825         {
 826                 m.cr = 2;
 827                 m.cg = 2;
 828                 m.cb = 2;
 829         }
 830         else
 831         {
 832                 m.cr = 1;
 833                 m.cg = 1;
 834                 m.cb = 1;
 835         }
 836         m.ca = 1;
 837         m.tex[0] = R_GetTexture(s->currenttexture->texture);
 838         m.texcoords[0] = &s->mesh.vertex->st[0];
 839         m.texcoordstep[0] = sizeof(surfvertex_t);
 840         if (softwaretransform_complexity)
 841         {
 842                 m.vertex = &svert[0].v[0];
 843                 m.vertexstep = sizeof(surfvert_t);
 844                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 845                         softwaretransform(v->v, sv->v);
 846         }
 847         else
 848         {
 849                 m.vertex = &s->mesh.vertex->v[0];
 850                 m.vertexstep = sizeof(surfvertex_t);
 851         }
 852         R_Mesh_Draw(&m);
 853 }
 854
 855 static void RSurfShader_Wall_Pass_BaseLightmap(msurface_t *s)
 856 {
 857         int                             i;
 858         float                   diff[3], ifog;
 859         surfvertex_t    *v;
 860         surfvert_t              *sv;
 861         rmeshinfo_t             m;
 862
 863         memset(&m, 0, sizeof(m));
 864         m.transparent = false;
 865         m.blendfunc1 = GL_ZERO;
 866         m.blendfunc2 = GL_SRC_COLOR;
 867         m.numtriangles = s->mesh.numtriangles;
 868         m.numverts = s->mesh.numverts;
 869         m.index = s->mesh.index;
 870         m.cr = 1;
 871         if (lighthalf)
 872                 m.cr *= 2.0f;
 873         m.cg = m.cr;
 874         m.cb = m.cr;
 875         m.ca = 1;
 876         m.tex[0] = R_GetTexture(s->lightmaptexture);
 877         m.texcoords[0] = &s->mesh.vertex->uv[0];
 878         m.texcoordstep[0] = sizeof(surfvertex_t);
 879         if (fogenabled)
 880         {
 881                 m.color = &svert[0].c[0];
 882                 m.colorstep = sizeof(surfvert_t);
 883                 if (softwaretransform_complexity)
 884                 {
 885                         m.vertex = &svert[0].v[0];
 886                         m.vertexstep = sizeof(surfvert_t);
 887                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 888                         {
 889                                 softwaretransform(v->v, sv->v);
 890                                 VectorSubtract(sv->v, r_origin, diff);
 891                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 892                                 sv->c[0] = m.cr * ifog;
 893                                 sv->c[1] = m.cg * ifog;
 894                                 sv->c[2] = m.cb * ifog;
 895                                 sv->c[3] = m.ca;
 896                         }
 897                 }
 898                 else
 899                 {
 900                         m.vertex = &s->mesh.vertex->v[0];
 901                         m.vertexstep = sizeof(surfvertex_t);
 902                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 903                         {
 904                                 VectorSubtract(v->v, r_origin, diff);
 905                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
 906                                 sv->c[0] = m.cr * ifog;
 907                                 sv->c[1] = m.cg * ifog;
 908                                 sv->c[2] = m.cb * ifog;
 909                                 sv->c[3] = m.ca;
 910                         }
 911                 }
 912         }
 913         else
 914         {
 915                 if (softwaretransform_complexity)
 916                 {
 917                         m.vertex = &svert[0].v[0];
 918                         m.vertexstep = sizeof(surfvert_t);
 919                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 920                                 softwaretransform(v->v, sv->v);
 921                 }
 922                 else
 923                 {
 924                         m.vertex = &s->mesh.vertex->v[0];
 925                         m.vertexstep = sizeof(surfvertex_t);
 926                 }
 927         }
 928         R_Mesh_Draw(&m);
 929 }
 930
 931 static void RSurfShader_Wall_Pass_BaseVertex(msurface_t *s)
 932 {
 933         int                             i, size3;
 934         float                   c[3], base[3], scale, diff[3], ifog;
 935         surfvertex_t    *v;
 936         surfvert_t              *sv;
 937         rmeshinfo_t             m;
 938         byte                    *lm;
 939
 940         size3 = ((s->extents[0]>>4)+1)*((s->extents[1]>>4)+1)*3;
 941
 942         base[0] = base[1] = base[2] = r_ambient.value * (1.0f / 128.0f);
 943
 944         memset(&m, 0, sizeof(m));
 945         if (currentrenderentity->effects & EF_ADDITIVE)
 946         {
 947                 m.transparent = true;
 948                 m.blendfunc1 = GL_SRC_ALPHA;
 949                 m.blendfunc2 = GL_ONE;
 950         }
 951         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1))
 952         {
 953                 m.transparent = true;
 954                 m.blendfunc1 = GL_SRC_ALPHA;
 955                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 956         }
 957         else
 958         {
 959                 m.transparent = false;
 960                 m.blendfunc1 = GL_ONE;
 961                 m.blendfunc2 = GL_ZERO;
 962         }
 963         m.numtriangles = s->mesh.numtriangles;
 964         m.numverts = s->mesh.numverts;
 965         m.index = s->mesh.index;
 966         m.vertex = &svert[0].v[0];
 967         m.vertexstep = sizeof(surfvert_t);
 968         m.color = &svert[0].c[0];
 969         m.colorstep = sizeof(surfvert_t);
 970         m.tex[0] = R_GetTexture(s->currenttexture->texture);
 971         m.texcoords[0] = &s->mesh.vertex->st[0];
 972         m.texcoordstep[0] = sizeof(surfvertex_t);
 973         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
 974         {
 975                 softwaretransform(v->v, sv->v);
 976                 VectorCopy(base, c);
 977                 if (s->styles[0] != 255)
 978                 {
 979                         lm = s->samples + v->lightmapoffset;
 980                         scale = d_lightstylevalue[s->styles[0]] * (1.0f / 32768.0f);
 981                         VectorMA(c, scale, lm, c);
 982                         if (s->styles[1] != 255)
 983                         {
 984                                 lm += size3;
 985                                 scale = d_lightstylevalue[s->styles[1]] * (1.0f / 32768.0f);
 986                                 VectorMA(c, scale, lm, c);
 987                                 if (s->styles[2] != 255)
 988                                 {
 989                                         lm += size3;
 990                                         scale = d_lightstylevalue[s->styles[2]] * (1.0f / 32768.0f);
 991                                         VectorMA(c, scale, lm, c);
 992                                         if (s->styles[3] != 255)
 993                                         {
 994                                                 lm += size3;
 995                                                 scale = d_lightstylevalue[s->styles[3]] * (1.0f / 32768.0f);
 996                                                 VectorMA(c, scale, lm, c);
 997                                         }
 998                                 }
 999                         }
1000                 }
1001                 sv->c[0] = c[0];
1002                 sv->c[1] = c[1];
1003                 sv->c[2] = c[2];
1004                 sv->c[3] = currentrenderentity->alpha;
1005         }
1006         if (s->dlightframe == r_framecount)
1007                 RSurf_Light(s->dlightbits, m.numverts);
1008         if (fogenabled)
1009         {
1010                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1011                 {
1012                         VectorSubtract(sv->v, r_origin, diff);
1013                         ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
1014                         sv->c[0] *= ifog;
1015                         sv->c[1] *= ifog;
1016                         sv->c[2] *= ifog;
1017                 }
1018         }
1019         R_Mesh_Draw(&m);
1020 }
1021
1022 static void RSurfShader_Wall_Pass_Light(msurface_t *s)
1023 {
1024         int                             i;
1025         float                   diff[3], ifog;
1026         surfvertex_t    *v;
1027         surfvert_t              *sv;
1028         rmeshinfo_t             m;
1029
1030         memset(&m, 0, sizeof(m));
1031         if (currentrenderentity->effects & EF_ADDITIVE)
1032                 m.transparent = true;
1033         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1))
1034                 m.transparent = true;
1035         else
1036                 m.transparent = false;
1037         m.blendfunc1 = GL_SRC_ALPHA;
1038         m.blendfunc2 = GL_ONE;
1039         m.numtriangles = s->mesh.numtriangles;
1040         m.numverts = s->mesh.numverts;
1041         m.index = s->mesh.index;
1042         m.vertex = &svert[0].v[0];
1043         m.vertexstep = sizeof(surfvert_t);
1044         m.color = &svert[0].c[0];
1045         m.colorstep = sizeof(surfvert_t);
1046         m.tex[0] = R_GetTexture(s->currenttexture->texture);
1047         m.texcoords[0] = &s->mesh.vertex->st[0];
1048         m.texcoordstep[0] = sizeof(surfvertex_t);
1049         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1050         {
1051                 softwaretransform(v->v, sv->v);
1052                 sv->c[0] = 0;
1053                 sv->c[1] = 0;
1054                 sv->c[2] = 0;
1055                 sv->c[3] = currentrenderentity->alpha;
1056         }
1057         if (RSurf_Light(s->dlightbits, m.numverts))
1058         {
1059                 if (fogenabled)
1060                 {
1061                         for (i = 0, sv = svert;i < m.numverts;i++, sv++)
1062                         {
1063                                 VectorSubtract(sv->v, r_origin, diff);
1064                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
1065                                 sv->c[0] *= ifog;
1066                                 sv->c[1] *= ifog;
1067                                 sv->c[2] *= ifog;
1068                         }
1069                 }
1070                 R_Mesh_Draw(&m);
1071         }
1072 }
1073
1074 static void RSurfShader_Wall_Pass_Glow(msurface_t *s)
1075 {
1076         int                             i;
1077         float                   diff[3], ifog;
1078         surfvertex_t    *v;
1079         surfvert_t              *sv;
1080         rmeshinfo_t             m;
1081
1082         memset(&m, 0, sizeof(m));
1083         if (currentrenderentity->effects & EF_ADDITIVE)
1084                 m.transparent = true;
1085         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1))
1086                 m.transparent = true;
1087         else
1088                 m.transparent = false;
1089         m.blendfunc1 = GL_SRC_ALPHA;
1090         m.blendfunc2 = GL_ONE;
1091         m.numtriangles = s->mesh.numtriangles;
1092         m.numverts = s->mesh.numverts;
1093         m.index = s->mesh.index;
1094         m.cr = 1;
1095         m.cg = 1;
1096         m.cb = 1;
1097         m.ca = currentrenderentity->alpha;
1098         m.tex[0] = R_GetTexture(s->currenttexture->glowtexture);
1099         m.texcoords[0] = &s->mesh.vertex->st[0];
1100         m.texcoordstep[0] = sizeof(surfvertex_t);
1101         if (fogenabled)
1102         {
1103                 m.color = &svert[0].c[0];
1104                 m.colorstep = sizeof(surfvert_t);
1105                 if (softwaretransform_complexity)
1106                 {
1107                         m.vertex = &svert[0].v[0];
1108                         m.vertexstep = sizeof(surfvert_t);
1109                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1110                         {
1111                                 softwaretransform(v->v, sv->v);
1112                                 VectorSubtract(sv->v, r_origin, diff);
1113                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
1114                                 sv->c[0] = m.cr * ifog;
1115                                 sv->c[1] = m.cg * ifog;
1116                                 sv->c[2] = m.cb * ifog;
1117                                 sv->c[3] = m.ca;
1118                         }
1119                 }
1120                 else
1121                 {
1122                         m.vertex = &s->mesh.vertex->v[0];
1123                         m.vertexstep = sizeof(surfvertex_t);
1124                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1125                         {
1126                                 VectorSubtract(v->v, r_origin, diff);
1127                                 ifog = 1 - exp(fogdensity/DotProduct(diff, diff));
1128                                 sv->c[0] = m.cr * ifog;
1129                                 sv->c[1] = m.cg * ifog;
1130                                 sv->c[2] = m.cb * ifog;
1131                                 sv->c[3] = m.ca;
1132                         }
1133                 }
1134         }
1135         else
1136         {
1137                 if (softwaretransform_complexity)
1138                 {
1139                         m.vertex = &svert[0].v[0];
1140                         m.vertexstep = sizeof(surfvert_t);
1141                         for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1142                                 softwaretransform(v->v, sv->v);
1143                 }
1144                 else
1145                 {
1146                         m.vertex = &s->mesh.vertex->v[0];
1147                         m.vertexstep = sizeof(surfvertex_t);
1148                 }
1149         }
1150         R_Mesh_Draw(&m);
1151 }
1152
1153 static void RSurfShader_Wall_Pass_Fog(msurface_t *s)
1154 {
1155         int                             i;
1156         surfvertex_t    *v;
1157         surfvert_t              *sv;
1158         rmeshinfo_t             m;
1159         vec3_t                  diff;
1160
1161         memset(&m, 0, sizeof(m));
1162         if (currentrenderentity->effects & EF_ADDITIVE)
1163                 m.transparent = true;
1164         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1))
1165                 m.transparent = true;
1166         else
1167                 m.transparent = false;
1168         m.blendfunc1 = GL_SRC_ALPHA;
1169         m.blendfunc2 = GL_ONE;
1170         m.numtriangles = s->mesh.numtriangles;
1171         m.numverts = s->mesh.numverts;
1172         m.index = s->mesh.index;
1173         m.color = &svert[0].c[0];
1174         m.colorstep = sizeof(surfvert_t);
1175         m.tex[0] = R_GetTexture(s->currenttexture->fogtexture);
1176         m.texcoords[0] = &s->mesh.vertex->st[0];
1177         m.texcoordstep[0] = sizeof(surfvertex_t);
1178         if (softwaretransform_complexity)
1179         {
1180                 m.vertex = &svert[0].v[0];
1181                 m.vertexstep = sizeof(surfvert_t);
1182                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1183                 {
1184                         softwaretransform(v->v, sv->v);
1185                         VectorSubtract(sv->v, r_origin, diff);
1186                         sv->c[0] = fogcolor[0];
1187                         sv->c[1] = fogcolor[1];
1188                         sv->c[2] = fogcolor[2];
1189                         sv->c[3] = currentrenderentity->alpha * exp(fogdensity/DotProduct(diff,diff));
1190                 }
1191         }
1192         else
1193         {
1194                 m.vertex = &s->mesh.vertex->v[0];
1195                 m.vertexstep = sizeof(surfvertex_t);
1196                 for (i = 0, sv = svert, v = s->mesh.vertex;i < m.numverts;i++, sv++, v++)
1197                 {
1198                         VectorSubtract(v->v, r_origin, diff);
1199                         sv->c[0] = fogcolor[0];
1200                         sv->c[1] = fogcolor[1];
1201                         sv->c[2] = fogcolor[2];
1202                         sv->c[3] = currentrenderentity->alpha * exp(fogdensity/DotProduct(diff,diff));
1203                 }
1204         }
1205         R_Mesh_Draw(&m);
1206 }
1207
1208 static int RSurfShader_Wall_Vertex(int stage, msurface_t *s)
1209 {
1210         switch(stage)
1211         {
1212         case 0:
1213                 RSurfShader_Wall_Pass_BaseVertex(s);
1214                 return false;
1215         case 1:
1216                 if (s->currenttexture->glowtexture)
1217                         RSurfShader_Wall_Pass_Glow(s);
1218                 return false;
1219         default:
1220                 return true;
1221         }
1222 }
1223
1224 static int RSurfShader_Wall_Lightmap(int stage, msurface_t *s)
1225 {
1226         if (r_vertexsurfaces.integer)
1227         {
1228                 switch(stage)
1229                 {
1230                 case 0:
1231                         RSurfShader_Wall_Pass_BaseVertex(s);
1232                         return false;
1233                 case 1:
1234                         if (s->currenttexture->glowtexture)
1235                                 RSurfShader_Wall_Pass_Glow(s);
1236                         return false;
1237                 default:
1238                         return true;
1239                 }
1240         }
1241         else if (r_multitexture.integer)
1242         {
1243                 if (r_dlightmap.integer)
1244                 {
1245                         switch(stage)
1246                         {
1247                         case 0:
1248                                 RSurfShader_Wall_Pass_BaseMTex(s);
1249                                 return false;
1250                         case 1:
1251                                 if (s->currenttexture->glowtexture)
1252                                         RSurfShader_Wall_Pass_Glow(s);
1253                                 return false;
1254                         default:
1255                                 return true;
1256                         }
1257                 }
1258                 else
1259                 {
1260                         switch(stage)
1261                         {
1262                         case 0:
1263                                 RSurfShader_Wall_Pass_BaseMTex(s);
1264                                 return false;
1265                         case 1:
1266                                 if (s->dlightframe == r_framecount)
1267                                         RSurfShader_Wall_Pass_Light(s);
1268                                 return false;
1269                         case 2:
1270                                 if (s->currenttexture->glowtexture)
1271                                         RSurfShader_Wall_Pass_Glow(s);
1272                                 return false;
1273                         default:
1274                                 return true;
1275                         }
1276                 }
1277         }
1278         else if (currentrenderentity != &cl_entities[0].render && (s->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1 || currentrenderentity->effects & EF_ADDITIVE))
1279         {
1280                 switch(stage)
1281                 {
1282                 case 0:
1283                         RSurfShader_Wall_Pass_BaseVertex(s);
1284                         return false;
1285                 case 1:
1286                         if (s->currenttexture->glowtexture)
1287                                 RSurfShader_Wall_Pass_Glow(s);
1288                         return false;
1289                 default:
1290                         return true;
1291                 }
1292         }
1293         else
1294         {
1295                 if (r_dlightmap.integer)
1296                 {
1297                         switch(stage)
1298                         {
1299                         case 0:
1300                                 RSurfShader_Wall_Pass_BaseTexture(s);
1301                                 return false;
1302                         case 1:
1303                                 RSurfShader_Wall_Pass_BaseLightmap(s);
1304                                 return false;
1305                         case 2:
1306                                 if (s->currenttexture->glowtexture)
1307                                         RSurfShader_Wall_Pass_Glow(s);
1308                                 return false;
1309                         default:
1310                                 return true;
1311                         }
1312                 }
1313                 else
1314                 {
1315                         switch(stage)
1316                         {
1317                         case 0:
1318                                 RSurfShader_Wall_Pass_BaseTexture(s);
1319                                 return false;
1320                         case 1:
1321                                 RSurfShader_Wall_Pass_BaseLightmap(s);
1322                                 return false;
1323                         case 2:
1324                                 if (s->dlightframe == r_framecount)
1325                                         RSurfShader_Wall_Pass_Light(s);
1326                                 return false;
1327                         case 3:
1328                                 if (s->currenttexture->glowtexture)
1329                                         RSurfShader_Wall_Pass_Glow(s);
1330                                 return false;
1331                         default:
1332                                 return true;
1333                         }
1334                 }
1335         }
1336 }
1337
1338 static int RSurfShader_Wall_Fog(int stage, msurface_t *s)
1339 {
1340         if (stage == 0 && fogenabled)
1341         {
1342                 RSurfShader_Wall_Pass_Fog(s);
1343                 return false;
1344         }
1345         else
1346                 return true;
1347 }
1348
1349 /*
1350 =============================================================
1351
1352         WORLD MODEL
1353
1354 =============================================================
1355 */
1356
1357 static void RSurf_Callback(void *data, void *junk)
1358 {
1359         ((msurface_t *)data)->visframe = r_framecount;
1360 }
1361
1362 static void R_SolidWorldNode (void)
1363 {
1364         if (r_viewleaf->contents != CONTENTS_SOLID)
1365         {
1366                 int portalstack;
1367                 mportal_t *p, *pstack[8192];
1368                 msurface_t *surf, **mark, **endmark;
1369                 mleaf_t *leaf;
1370                 tinyplane_t plane;
1371                 // LordHavoc: portal-passage worldnode; follows portals leading
1372                 // outward from viewleaf, if a portal leads offscreen it is not
1373                 // followed, in indoor maps this can often cull a great deal of
1374                 // geometry away when pvs data is not present (useful with pvs as well)
1375
1376                 leaf = r_viewleaf;
1377                 leaf->worldnodeframe = r_framecount;
1378                 portalstack = 0;
1379         loc0:
1380                 c_leafs++;
1381
1382                 leaf->visframe = r_framecount;
1383
1384                 if (leaf->nummarksurfaces)
1385                 {
1386                         mark = leaf->firstmarksurface;
1387                         endmark = mark + leaf->nummarksurfaces;
1388                         if (r_ser.integer)
1389                         {
1390                                 do
1391                                 {
1392                                         surf = *mark++;
1393                                         // make sure surfaces are only processed once
1394                                         if (surf->worldnodeframe == r_framecount)
1395                                                 continue;
1396                                         surf->worldnodeframe = r_framecount;
1397                                         if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1398                                         {
1399                                                 if (surf->flags & SURF_PLANEBACK)
1400                                                 {
1401                                                         VectorNegate(surf->plane->normal, plane.normal);
1402                                                         plane.dist = -surf->plane->dist;
1403                                                         R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), (surf->flags & SURF_CLIPSOLID) != 0, RSurf_Callback, surf, NULL, &plane);
1404                                                 }
1405                                         }
1406                                         else
1407                                         {
1408                                                 if (!(surf->flags & SURF_PLANEBACK))
1409                                                         R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), (surf->flags & SURF_CLIPSOLID) != 0, RSurf_Callback, surf, NULL, (tinyplane_t *)surf->plane);
1410                                         }
1411                                 }
1412                                 while (mark < endmark);
1413                         }
1414                         else
1415                         {
1416                                 do
1417                                 {
1418                                         surf = *mark++;
1419                                         // make sure surfaces are only processed once
1420                                         if (surf->worldnodeframe == r_framecount)
1421                                                 continue;
1422                                         surf->worldnodeframe = r_framecount;
1423                                         if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1424                                         {
1425                                                 if (surf->flags & SURF_PLANEBACK)
1426                                                         surf->visframe = r_framecount;
1427                                         }
1428                                         else
1429                                         {
1430                                                 if (!(surf->flags & SURF_PLANEBACK))
1431                                                         surf->visframe = r_framecount;
1432                                         }
1433                                 }
1434                                 while (mark < endmark);
1435                         }
1436                 }
1437
1438                 // follow portals into other leafs
1439                 p = leaf->portals;
1440                 for (;p;p = p->next)
1441                 {
1442                         if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1443                         {
1444                                 leaf = p->past;
1445                                 if (leaf->worldnodeframe != r_framecount)
1446                                 {
1447                                         leaf->worldnodeframe = r_framecount;
1448                                         if (leaf->contents != CONTENTS_SOLID)
1449                                         {
1450                                                 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1451                                                 {
1452                                                         p->visframe = r_framecount;
1453                                                         pstack[portalstack++] = p;
1454                                                         goto loc0;
1455
1456         loc1:
1457                                                         p = pstack[--portalstack];
1458                                                 }
1459                                         }
1460                                 }
1461                         }
1462                 }
1463
1464                 if (portalstack)
1465                         goto loc1;
1466         }
1467         else
1468         {
1469                 mnode_t *nodestack[8192], *node = cl.worldmodel->nodes;
1470                 int nodestackpos = 0;
1471                 // LordHavoc: recursive descending worldnode; if portals are not
1472                 // available, this is a good last resort, can cull large amounts of
1473                 // geometry, but is more time consuming than portal-passage and renders
1474                 // things behind walls
1475
1476 loc2:
1477                 if (R_NotCulledBox(node->mins, node->maxs))
1478                 {
1479                         if (node->numsurfaces)
1480                         {
1481                                 if (r_ser.integer)
1482                                 {
1483                                         msurface_t *surf = cl.worldmodel->surfaces + node->firstsurface, *surfend = surf + node->numsurfaces;
1484                                         tinyplane_t plane;
1485                                         if (PlaneDiff (r_origin, node->plane) < 0)
1486                                         {
1487                                                 for (;surf < surfend;surf++)
1488                                                 {
1489                                                         if (surf->flags & SURF_PLANEBACK)
1490                                                         {
1491                                                                 VectorNegate(surf->plane->normal, plane.normal);
1492                                                                 plane.dist = -surf->plane->dist;
1493                                                                 R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), surf->flags & SURF_CLIPSOLID, RSurf_Callback, surf, NULL, &plane);
1494                                                         }
1495                                                 }
1496                                         }
1497                                         else
1498                                         {
1499                                                 for (;surf < surfend;surf++)
1500                                                 {
1501                                                         if (!(surf->flags & SURF_PLANEBACK))
1502                                                                 R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), surf->flags & SURF_CLIPSOLID, RSurf_Callback, surf, NULL, (tinyplane_t *)surf->plane);
1503                                                 }
1504                                         }
1505                                 }
1506                                 else
1507                                 {
1508                                         msurface_t *surf = cl.worldmodel->surfaces + node->firstsurface, *surfend = surf + node->numsurfaces;
1509                                         if (PlaneDiff (r_origin, node->plane) < 0)
1510                                         {
1511                                                 for (;surf < surfend;surf++)
1512                                                 {
1513                                                         if (surf->flags & SURF_PLANEBACK)
1514                                                                 surf->visframe = r_framecount;
1515                                                 }
1516                                         }
1517                                         else
1518                                         {
1519                                                 for (;surf < surfend;surf++)
1520                                                 {
1521                                                         if (!(surf->flags & SURF_PLANEBACK))
1522                                                                 surf->visframe = r_framecount;
1523                                                 }
1524                                         }
1525                                 }
1526                         }
1527
1528                         // recurse down the children
1529                         if (node->children[0]->contents >= 0)
1530                         {
1531                                 if (node->children[1]->contents >= 0)
1532                                 {
1533                                         if (nodestackpos < 8192)
1534                                                 nodestack[nodestackpos++] = node->children[1];
1535                                         node = node->children[0];
1536                                         goto loc2;
1537                                 }
1538                                 else
1539                                         ((mleaf_t *)node->children[1])->visframe = r_framecount;
1540                                 node = node->children[0];
1541                                 goto loc2;
1542                         }
1543                         else
1544                         {
1545                                 ((mleaf_t *)node->children[0])->visframe = r_framecount;
1546                                 if (node->children[1]->contents >= 0)
1547                                 {
1548                                         node = node->children[1];
1549                                         goto loc2;
1550                                 }
1551                                 else if (nodestackpos > 0)
1552                                 {
1553                                         ((mleaf_t *)node->children[1])->visframe = r_framecount;
1554                                         node = nodestack[--nodestackpos];
1555                                         goto loc2;
1556                                 }
1557                         }
1558                 }
1559                 else if (nodestackpos > 0)
1560                 {
1561                         node = nodestack[--nodestackpos];
1562                         goto loc2;
1563                 }
1564         }
1565 }
1566
1567 static int r_portalframecount = 0;
1568
1569 static void R_PVSWorldNode()
1570 {
1571         int portalstack, i;
1572         mportal_t *p, *pstack[8192];
1573         msurface_t *surf, **mark, **endmark;
1574         mleaf_t *leaf;
1575         tinyplane_t plane;
1576         byte *worldvis;
1577
1578         worldvis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
1579
1580         leaf = r_viewleaf;
1581         leaf->worldnodeframe = r_framecount;
1582         portalstack = 0;
1583 loc0:
1584         c_leafs++;
1585
1586         leaf->visframe = r_framecount;
1587
1588         if (leaf->nummarksurfaces)
1589         {
1590                 mark = leaf->firstmarksurface;
1591                 endmark = mark + leaf->nummarksurfaces;
1592                 if (r_ser.integer)
1593                 {
1594                         do
1595                         {
1596                                 surf = *mark++;
1597                                 // make sure surfaces are only processed once
1598                                 if (surf->worldnodeframe == r_framecount)
1599                                         continue;
1600                                 surf->worldnodeframe = r_framecount;
1601                                 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1602                                 {
1603                                         if (surf->flags & SURF_PLANEBACK)
1604                                         {
1605                                                 VectorNegate(surf->plane->normal, plane.normal);
1606                                                 plane.dist = -surf->plane->dist;
1607                                                 R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), (surf->flags & SURF_CLIPSOLID) != 0, RSurf_Callback, surf, NULL, &plane);
1608                                         }
1609                                 }
1610                                 else
1611                                 {
1612                                         if (!(surf->flags & SURF_PLANEBACK))
1613                                                 R_Clip_AddPolygon((float *)surf->poly_verts, surf->poly_numverts, sizeof(float[3]), (surf->flags & SURF_CLIPSOLID) != 0, RSurf_Callback, surf, NULL, (tinyplane_t *)surf->plane);
1614                                 }
1615                         }
1616                         while (mark < endmark);
1617                 }
1618                 else
1619                 {
1620                         do
1621                         {
1622                                 surf = *mark++;
1623                                 // make sure surfaces are only processed once
1624                                 if (surf->worldnodeframe == r_framecount)
1625                                         continue;
1626                                 surf->worldnodeframe = r_framecount;
1627                                 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1628                                 {
1629                                         if (surf->flags & SURF_PLANEBACK)
1630                                                 surf->visframe = r_framecount;
1631                                 }
1632                                 else
1633                                 {
1634                                         if (!(surf->flags & SURF_PLANEBACK))
1635                                                 surf->visframe = r_framecount;
1636                                 }
1637                         }
1638                         while (mark < endmark);
1639                 }
1640         }
1641
1642         // follow portals into other leafs
1643         for (p = leaf->portals;p;p = p->next)
1644         {
1645                 if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1646                 {
1647                         leaf = p->past;
1648                         if (leaf->worldnodeframe != r_framecount)
1649                         {
1650                                 leaf->worldnodeframe = r_framecount;
1651                                 if (leaf->contents != CONTENTS_SOLID)
1652                                 {
1653                                         i = (leaf - cl.worldmodel->leafs) - 1;
1654                                         if (worldvis[i>>3] & (1<<(i&7)))
1655                                         {
1656                                                 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1657                                                 {
1658                                                         pstack[portalstack++] = p;
1659                                                         goto loc0;
1660
1661 loc1:
1662                                                         p = pstack[--portalstack];
1663                                                 }
1664                                         }
1665                                 }
1666                         }
1667                 }
1668         }
1669
1670         if (portalstack)
1671                 goto loc1;
1672 }
1673
1674 Cshader_t Cshader_wall_vertex = {{NULL, RSurfShader_Wall_Vertex, RSurfShader_Wall_Fog}, NULL};
1675 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap, RSurfShader_Wall_Fog}, NULL};
1676 Cshader_t Cshader_water = {{NULL, RSurfShader_Water, NULL}, NULL};
1677 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL, NULL}, NULL};
1678
1679 int Cshader_count = 4;
1680 Cshader_t *Cshaders[4] =
1681 {
1682         &Cshader_wall_vertex,
1683         &Cshader_wall_lightmap,
1684         &Cshader_water,
1685         &Cshader_sky
1686 };
1687
1688 void R_PrepareSurfaces(void)
1689 {
1690         int i;
1691         texture_t *t;
1692         model_t *model;
1693         msurface_t *surf;
1694
1695         for (i = 0;i < Cshader_count;i++)
1696                 Cshaders[i]->chain = NULL;
1697
1698         model = currentrenderentity->model;
1699
1700         for (i = 0;i < model->nummodelsurfaces;i++)
1701         {
1702                 surf = model->modelsortedsurfaces[i];
1703                 if (surf->visframe == r_framecount)
1704                 {
1705                         if (surf->insertframe != r_framecount)
1706                         {
1707                                 surf->insertframe = r_framecount;
1708                                 c_faces++;
1709                                 // manually inlined R_TextureAnimation
1710                                 //t = R_TextureAnimation(surf->texinfo->texture);
1711                                 t = surf->texinfo->texture;
1712                                 if (t->alternate_anims != NULL && currentrenderentity->frame)
1713                                         t = t->alternate_anims;
1714                                 if (t->anim_total >= 2)
1715                                         t = t->anim_frames[(int)(cl.time * 5.0f) % t->anim_total];
1716                                 surf->currenttexture = t;
1717                         }
1718
1719                         surf->chain = surf->shader->chain;
1720                         surf->shader->chain = surf;
1721                 }
1722         }
1723 }
1724
1725 void R_DrawSurfaces (int type)
1726 {
1727         int                     i, stage;
1728         msurface_t      *surf;
1729         Cshader_t       *shader;
1730
1731         for (i = 0;i < Cshader_count;i++)
1732         {
1733                 shader = Cshaders[i];
1734                 if (shader->chain && shader->shaderfunc[type])
1735                         for (stage = 0;stage < 1000;stage++)
1736                                 for (surf = shader->chain;surf;surf = surf->chain)
1737                                         if (shader->shaderfunc[type](stage, surf))
1738                                                 goto done;
1739 done:;
1740         }
1741 }
1742
1743 void R_DrawSurfacesAll (void)
1744 {
1745         R_DrawSurfaces(SHADERSTAGE_SKY);
1746         R_DrawSurfaces(SHADERSTAGE_NORMAL);
1747         R_DrawSurfaces(SHADERSTAGE_FOG);
1748 }
1749
1750 static float portalpointbuffer[256][3];
1751
1752 void R_DrawPortals(void)
1753 {
1754         int drawportals, i;
1755 //      mleaf_t *leaf, *endleaf;
1756         mportal_t *portal, *endportal;
1757         mvertex_t *point/*, *endpoint*/;
1758         rmeshinfo_t m;
1759         drawportals = r_drawportals.integer;
1760         if (drawportals < 1)
1761                 return;
1762         /*
1763         leaf = cl.worldmodel->leafs;
1764         endleaf = leaf + cl.worldmodel->numleafs;
1765         for (;leaf < endleaf;leaf++)
1766         {
1767                 if (leaf->visframe == r_framecount && leaf->portals)
1768                 {
1769                         i = leaf - cl.worldmodel->leafs;
1770                         r = (i & 0x0007) << 5;
1771                         g = (i & 0x0038) << 2;
1772                         b = (i & 0x01C0) >> 1;
1773                         portal = leaf->portals;
1774                         while (portal)
1775                         {
1776                                 transpolybegin(0, 0, 0, TPOLYTYPE_ALPHA);
1777                                 point = portal->points + portal->numpoints - 1;
1778                                 endpoint = portal->points;
1779                                 for (;point >= endpoint;point--)
1780                                         transpolyvertub(point->position[0], point->position[1], point->position[2], 0, 0, r, g, b, 32);
1781                                 transpolyend();
1782                                 portal = portal->next;
1783                         }
1784                 }
1785         }
1786         */
1787         memset(&m, 0, sizeof(m));
1788         m.transparent = true;
1789         m.blendfunc1 = GL_SRC_ALPHA;
1790         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1791         m.vertex = &portalpointbuffer[0][0];
1792         m.vertexstep = sizeof(float[3]);
1793         m.ca = 0.125;
1794         for (portal = cl.worldmodel->portals, endportal = portal + cl.worldmodel->numportals;portal < endportal;portal++)
1795         {
1796                 if (portal->visframe == r_portalframecount)
1797                 {
1798                         if (portal->numpoints <= 256)
1799                         {
1800                                 i = portal - cl.worldmodel->portals;
1801                                 m.cr = ((i & 0x0007) >> 0) * (1.0f / 7.0f);
1802                                 m.cg = ((i & 0x0038) >> 3) * (1.0f / 7.0f);
1803                                 m.cb = ((i & 0x01C0) >> 6) * (1.0f / 7.0f);
1804                                 point = portal->points;
1805                                 if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1806                                 {
1807                                         for (i = portal->numpoints - 1;i >= 0;i--)
1808                                                 VectorCopy(point[i].position, portalpointbuffer[i]);
1809                                 }
1810                                 else
1811                                 {
1812                                         for (i = 0;i < portal->numpoints;i++)
1813                                                 VectorCopy(point[i].position, portalpointbuffer[i]);
1814                                 }
1815                                 R_Mesh_DrawPolygon(&m, portal->numpoints);
1816                         }
1817                 }
1818         }
1819 }
1820
1821 void R_SetupForBModelRendering(void)
1822 {
1823         int                     i;
1824         msurface_t      *s;
1825         model_t         *model;
1826         vec3_t          modelorg;
1827
1828         // because bmodels can be reused, we have to decide which things to render
1829         // from scratch every time
1830
1831         model = currentrenderentity->model;
1832
1833         softwaretransformforentity (currentrenderentity);
1834         softwareuntransform(r_origin, modelorg);
1835
1836         for (i = 0;i < model->nummodelsurfaces;i++)
1837         {
1838                 s = model->modelsortedsurfaces[i];
1839                 if (((s->flags & SURF_PLANEBACK) == 0) == (PlaneDiff(modelorg, s->plane) >= 0))
1840                         s->visframe = r_framecount;
1841                 else
1842                         s->visframe = -1;
1843                 s->worldnodeframe = -1;
1844                 s->lightframe = -1;
1845                 s->dlightframe = -1;
1846                 s->insertframe = -1;
1847         }
1848 }
1849
1850 void R_SetupForWorldRendering(void)
1851 {
1852         // there is only one instance of the world, but it can be rendered in
1853         // multiple stages
1854
1855         currentrenderentity = &cl_entities[0].render;
1856         softwaretransformidentity();
1857 }
1858
1859 static void R_SurfMarkLights (void)
1860 {
1861         int                     i;
1862         msurface_t      *s;
1863
1864         if (r_dynamic.integer)
1865                 R_MarkLights();
1866
1867         if (!r_vertexsurfaces.integer)
1868         {
1869                 for (i = 0;i < currentrenderentity->model->nummodelsurfaces;i++)
1870                 {
1871                         s = currentrenderentity->model->modelsortedsurfaces[i];
1872                         if (s->visframe == r_framecount && s->lightmaptexture != NULL)
1873                         {
1874                                 if (s->cached_dlight
1875                                  || s->cached_ambient != r_ambient.value
1876                                  || s->cached_lightscalebit != lightscalebit)
1877                                         R_BuildLightMap(s, false); // base lighting changed
1878                                 else if (r_dynamic.integer)
1879                                 {
1880                                         if  (s->styles[0] != 255 && (d_lightstylevalue[s->styles[0]] != s->cached_light[0]
1881                                          || (s->styles[1] != 255 && (d_lightstylevalue[s->styles[1]] != s->cached_light[1]
1882                                          || (s->styles[2] != 255 && (d_lightstylevalue[s->styles[2]] != s->cached_light[2]
1883                                          || (s->styles[3] != 255 && (d_lightstylevalue[s->styles[3]] != s->cached_light[3]))))))))
1884                                         //if (s->cached_light[0] != d_lightstylevalue[s->styles[0]]
1885                                         // || s->cached_light[1] != d_lightstylevalue[s->styles[1]]
1886                                         // || s->cached_light[2] != d_lightstylevalue[s->styles[2]]
1887                                         // || s->cached_light[3] != d_lightstylevalue[s->styles[3]])
1888                                                 R_BuildLightMap(s, false); // base lighting changed
1889                                         else if (s->dlightframe == r_framecount && r_dlightmap.integer)
1890                                                 R_BuildLightMap(s, true); // only dlights
1891                                 }
1892                         }
1893                 }
1894         }
1895 }
1896
1897 void R_MarkWorldLights(void)
1898 {
1899         R_SetupForWorldRendering();
1900         R_SurfMarkLights();
1901 }
1902
1903 /*
1904 =============
1905 R_DrawWorld
1906 =============
1907 */
1908 void R_DrawWorld (void)
1909 {
1910         R_SetupForWorldRendering();
1911
1912         if (r_viewleaf->contents == CONTENTS_SOLID || r_novis.integer || r_viewleaf->compressed_vis == NULL)
1913                 R_SolidWorldNode ();
1914         else
1915                 R_PVSWorldNode ();
1916 }
1917
1918 /*
1919 =================
1920 R_DrawBrushModel
1921 =================
1922 */
1923 void R_DrawBrushModelSky (void)
1924 {
1925         R_SetupForBModelRendering();
1926
1927         R_PrepareSurfaces();
1928         R_DrawSurfaces(SHADERSTAGE_SKY);
1929 }
1930
1931 void R_DrawBrushModelNormal (void)
1932 {
1933         c_bmodels++;
1934
1935         // have to flush queue because of possible lightmap reuse
1936         R_Mesh_Render();
1937
1938         R_SetupForBModelRendering();
1939
1940         R_SurfMarkLights();
1941
1942         R_PrepareSurfaces();
1943
1944         if (!skyrendermasked)
1945                 R_DrawSurfaces(SHADERSTAGE_SKY);
1946         R_DrawSurfaces(SHADERSTAGE_NORMAL);
1947         R_DrawSurfaces(SHADERSTAGE_FOG);
1948 }