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 int             lightmap_textures;
  25
  26 signed blocklights[18*18*3]; // LordHavoc: *3 for colored lighting
  27
  28 // LordHavoc: skinny but tall lightmaps for quicker subimage uploads
  29 #define BLOCK_WIDTH             128
  30 #define BLOCK_HEIGHT    128
  31 // LordHavoc: increased lightmap limit from 64 to 1024
  32 #define MAX_LIGHTMAPS   1024
  33 #define LIGHTMAPSIZE    (BLOCK_WIDTH*BLOCK_HEIGHT*4)
  34
  35 int                     active_lightmaps;
  36
  37 short allocated[MAX_LIGHTMAPS][BLOCK_WIDTH];
  38
  39 byte *lightmaps[MAX_LIGHTMAPS];
  40 short lightmapupdate[MAX_LIGHTMAPS][2];
  41
  42 int lightmapalign, lightmapalignmask; // LordHavoc: NVIDIA's broken subimage fix, see BuildLightmaps for notes
  43 cvar_t gl_lightmapalign = {"gl_lightmapalign", "4"};
  44 cvar_t gl_lightmaprgba = {"gl_lightmaprgba", "0"};
  45 cvar_t gl_nosubimagefragments = {"gl_nosubimagefragments", "0"};
  46 cvar_t gl_nosubimage = {"gl_nosubimage", "0"};
  47 cvar_t r_ambient = {"r_ambient", "0"};
  48 cvar_t gl_vertex = {"gl_vertex", "0"};
  49 cvar_t gl_texsort = {"gl_texsort", "1"};
  50 //cvar_t gl_funnywalls = {"gl_funnywalls", "0"}; // LordHavoc: see BuildSurfaceDisplayList
  51
  52 qboolean lightmaprgba, nosubimagefragments, nosubimage, skyisvisible;
  53 int lightmapbytes;
  54
  55 extern qboolean gl_arrays;
  56
  57 extern int r_dlightframecount;
  58
  59 void gl_surf_start()
  60 {
  61 }
  62
  63 void gl_surf_shutdown()
  64 {
  65 }
  66
  67 void GL_Surf_Init()
  68 {
  69         int i;
  70         for (i = 0;i < MAX_LIGHTMAPS;i++)
  71                 lightmaps[i] = NULL;
  72         Cvar_RegisterVariable(&gl_lightmapalign);
  73         Cvar_RegisterVariable(&gl_lightmaprgba);
  74         Cvar_RegisterVariable(&gl_nosubimagefragments);
  75         Cvar_RegisterVariable(&gl_nosubimage);
  76         Cvar_RegisterVariable(&r_ambient);
  77 //      Cvar_RegisterVariable(&gl_funnywalls);
  78         Cvar_RegisterVariable(&gl_vertex);
  79         Cvar_RegisterVariable(&gl_texsort);
  80         // check if it's the glquake minigl driver
  81         if (strncasecmp(gl_vendor,"3Dfx",4)==0)
  82         if (!gl_arrays)
  83         {
  84 //              Cvar_SetValue("gl_nosubimagefragments", 1);
  85 //              Cvar_SetValue("gl_nosubimage", 1);
  86                 Cvar_SetValue("gl_lightmode", 0);
  87         }
  88
  89         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown);
  90 }
  91
  92 /*
  93 ===============
  94 R_BuildLightMap
  95
  96 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  97 ===============
  98 */
  99 void R_BuildLightMap (msurface_t *surf, byte *dest, int stride)
 100 {
 101         int                     smax, tmax;
 102         int                     t;
 103         int                     i, j, size;
 104         byte            *lightmap;
 105         int                     scale;
 106         int                     maps;
 107         int                     *bl;
 108
 109         surf->cached_lighthalf = lighthalf;
 110         surf->cached_ambient = r_ambient.value;
 111
 112         smax = (surf->extents[0]>>4)+1;
 113         tmax = (surf->extents[1]>>4)+1;
 114         size = smax*tmax;
 115         lightmap = surf->samples;
 116
 117 // set to full bright if no light data
 118         if (currententity->effects & EF_FULLBRIGHT || !cl.worldmodel->lightdata)
 119         {
 120                 bl = blocklights;
 121                 for (i=0 ; i<size ; i++)
 122                 {
 123                         *bl++ = 255*256;
 124                         *bl++ = 255*256;
 125                         *bl++ = 255*256;
 126                 }
 127         }
 128         else
 129         {
 130 // clear to no light
 131                 bl = blocklights;
 132                 j = r_ambient.value * 512.0f; // would be 256.0f logically, but using 512.0f to match winquake style
 133                 for (i=0 ; i<size ; i++)
 134                 {
 135                         *bl++ = j;
 136                         *bl++ = j;
 137                         *bl++ = j;
 138                 }
 139
 140 // add all the lightmaps
 141                 if (lightmap)
 142                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
 143                         {
 144                                 scale = d_lightstylevalue[surf->styles[maps]];
 145                                 surf->cached_light[maps] = scale;       // 8.8 fraction
 146                                 bl = blocklights;
 147                                 for (i=0 ; i<size ; i++)
 148                                 {
 149                                         *bl++ += *lightmap++ * scale;
 150                                         *bl++ += *lightmap++ * scale;
 151                                         *bl++ += *lightmap++ * scale;
 152                                 }
 153                         }
 154         }
 155         stride -= (smax*lightmapbytes);
 156         bl = blocklights;
 157         if (lighthalf)
 158         {
 159                 // LordHavoc: I shift down by 8 unlike GLQuake's 7,
 160                 // the image is brightened as a processing pass
 161                 if (lightmaprgba)
 162                 {
 163                         for (i=0 ; i<tmax ; i++, dest += stride)
 164                         {
 165                                 for (j=0 ; j<smax ; j++)
 166                                 {
 167                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 168                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 169                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 170                                         *dest++ = 255;
 171                                 }
 172                         }
 173                 }
 174                 else
 175                 {
 176                         for (i=0 ; i<tmax ; i++, dest += stride)
 177                         {
 178                                 for (j=0 ; j<smax ; j++)
 179                                 {
 180                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 181                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 182                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 183                                 }
 184                         }
 185                 }
 186         }
 187         else
 188         {
 189                 if (lightmaprgba)
 190                 {
 191                         for (i=0 ; i<tmax ; i++, dest += stride)
 192                         {
 193                                 for (j=0 ; j<smax ; j++)
 194                                 {
 195                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 196                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 197                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 198                                         *dest++ = 255;
 199                                 }
 200                         }
 201                 }
 202                 else
 203                 {
 204                         for (i=0 ; i<tmax ; i++, dest += stride)
 205                         {
 206                                 for (j=0 ; j<smax ; j++)
 207                                 {
 208                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 209                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 210                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 211                                 }
 212                         }
 213                 }
 214         }
 215 }
 216
 217 byte templight[32*32*4];
 218
 219 void R_UpdateLightmap(msurface_t *s, int lnum)
 220 {
 221         int smax, tmax;
 222         // upload the new lightmap texture fragment
 223         if(r_upload.value)
 224                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + lnum);
 225         if (nosubimage || nosubimagefragments)
 226         {
 227                 if (lightmapupdate[lnum][0] > s->light_t)
 228                         lightmapupdate[lnum][0] = s->light_t;
 229                 if (lightmapupdate[lnum][1] < (s->light_t + ((s->extents[1]>>4)+1)))
 230                         lightmapupdate[lnum][1] = (s->light_t + ((s->extents[1]>>4)+1));
 231                 if (lightmaprgba)
 232                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 4, BLOCK_WIDTH * 4);
 233                 else
 234                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 3, BLOCK_WIDTH * 3);
 235         }
 236         else
 237         {
 238                 smax = ((s->extents[0]>>4)+lightmapalign) & lightmapalignmask;
 239                 tmax = (s->extents[1]>>4)+1;
 240                 if (lightmaprgba)
 241                 {
 242                         R_BuildLightMap (s, templight, smax * 4);
 243                         if(r_upload.value)
 244                                 glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
 245                 }
 246                 else
 247                 {
 248                         R_BuildLightMap (s, templight, smax * 3);
 249                         if(r_upload.value)
 250                                 glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
 251                 }
 252         }
 253 }
 254
 255
 256 /*
 257 ===============
 258 R_TextureAnimation
 259
 260 Returns the proper texture for a given time and base texture
 261 ===============
 262 */
 263 texture_t *R_TextureAnimation (texture_t *base)
 264 {
 265         texture_t *original;
 266         int             relative;
 267         int             count;
 268
 269         if (currententity->frame)
 270         {
 271                 if (base->alternate_anims)
 272                         base = base->alternate_anims;
 273         }
 274
 275         if (!base->anim_total)
 276                 return base;
 277
 278         original = base;
 279
 280         relative = (int)(cl.time*10) % base->anim_total;
 281
 282         count = 0;
 283         while (base->anim_min > relative || base->anim_max <= relative)
 284         {
 285                 base = base->anim_next;
 286                 if (!base)
 287                 {
 288                         Con_Printf("R_TextureAnimation: broken cycle");
 289                         return original;
 290                 }
 291                 if (++count > 100)
 292                 {
 293                         Con_Printf("R_TextureAnimation: infinite cycle");
 294                         return original;
 295                 }
 296         }
 297
 298         return base;
 299 }
 300
 301
 302 /*
 303 =============================================================
 304
 305         BRUSH MODELS
 306
 307 =============================================================
 308 */
 309
 310
 311 extern  int             solidskytexture;
 312 extern  int             alphaskytexture;
 313 extern  float   speedscale;             // for top sky and bottom sky
 314
 315 extern char skyname[];
 316
 317 void R_DynamicLightPoint(vec3_t color, vec3_t org, int *dlightbits);
 318 float   turbsin[256] =
 319 {
 320         #include "gl_warp_sin.h"
 321 };
 322 #define TURBSCALE (256.0 / (2 * M_PI))
 323
 324
 325 void UploadLightmaps()
 326 {
 327         int i;
 328         if (nosubimage || nosubimagefragments)
 329         {
 330                 for (i = 0;i < MAX_LIGHTMAPS;i++)
 331                 {
 332                         if (lightmapupdate[i][0] < lightmapupdate[i][1])
 333                         {
 334                                 if(r_upload.value)
 335                                 {
 336                                         glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
 337                                         if (nosubimage)
 338                                         {
 339                                                 if (lightmaprgba)
 340                                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
 341                                                 else
 342                                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
 343                                         }
 344                                         else
 345                                         {
 346                                                 if (lightmaprgba)
 347                                                         glTexSubImage2D(GL_TEXTURE_2D, 0, 0, lightmapupdate[i][0], BLOCK_WIDTH, lightmapupdate[i][1] - lightmapupdate[i][0], GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i] + (BLOCK_WIDTH * 4 * lightmapupdate[i][0]));
 348                                                 else
 349                                                         glTexSubImage2D(GL_TEXTURE_2D, 0, 0, lightmapupdate[i][0], BLOCK_WIDTH, lightmapupdate[i][1] - lightmapupdate[i][0], GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i] + (BLOCK_WIDTH * 3 * lightmapupdate[i][0]));
 350                                         }
 351                                 }
 352                         }
 353                         lightmapupdate[i][0] = BLOCK_HEIGHT;
 354                         lightmapupdate[i][1] = 0;
 355                 }
 356         }
 357 }
 358
 359 float   wvert[1024*6]; // used by the following functions
 360
 361 void RSurf_DrawSky(msurface_t *s, int transform)
 362 {
 363         glpoly_t *p;
 364         int i;
 365         float *v;
 366         for (p=s->polys ; p ; p=p->next)
 367         {
 368                 if (currentskypoly < MAX_SKYPOLYS && currentskyvert + p->numverts <= MAX_SKYVERTS)
 369                 {
 370                         skypoly[currentskypoly].firstvert = currentskyvert;
 371                         skypoly[currentskypoly++].verts = p->numverts;
 372                         if (transform)
 373                         {
 374                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 375                                 {
 376                                         softwaretransform(v, skyvert[currentskyvert].v);
 377                                         currentskyvert++;
 378                                 }
 379                         }
 380                         else
 381                         {
 382                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 383                                 {
 384                                         skyvert[currentskyvert].v[0] = v[0];
 385                                         skyvert[currentskyvert].v[1] = v[1];
 386                                         skyvert[currentskyvert++].v[2] = v[2];
 387                                 }
 388                         }
 389                 }
 390         }
 391 }
 392
 393 int RSurf_Light(int *dlightbits, glpoly_t *polys)
 394 {
 395         float           cr, cg, cb, radius, radius2, f, *v, *wv;
 396         int                     i, a, b, lit = false;
 397         unsigned int c, d;
 398         dlight_t        *light;
 399         vec_t           *lightorigin;
 400         glpoly_t        *p;
 401         for (a = 0;a < 8;a++)
 402         {
 403                 if ((c = dlightbits[a]))
 404                 {
 405                         for (b = 0, d = 1;c;b++, d <<= 1)
 406                         {
 407                                 if (c & d)
 408                                 {
 409                                         c -= d;
 410                                         light = &cl_dlights[a * 32 + b];
 411                                         lightorigin = light->origin;
 412                                         cr = light->color[0];
 413                                         cg = light->color[1];
 414                                         cb = light->color[2];
 415                                         radius = light->radius*light->radius*LIGHTSCALE;
 416                                         radius2 = radius * (256.0f / LIGHTSCALE);
 417                                         wv = wvert;
 418                                         for (p = polys;p;p = p->next)
 419                                         {
 420                                                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 421                                                 {
 422                                                         f = VectorDistance2(wv, lightorigin);
 423                                                         if (f < radius)
 424                                                         {
 425                                                                 f = radius2 / (f + LIGHTOFFSET);
 426                                                                 wv[3] += cr * f;
 427                                                                 wv[4] += cg * f;
 428                                                                 wv[5] += cb * f;
 429                                                                 lit = true;
 430                                                         }
 431                                                         wv += 6;
 432                                                 }
 433                                         }
 434                                 }
 435                         }
 436                 }
 437         }
 438         return lit;
 439 }
 440
 441 void RSurf_DrawWater(msurface_t *s, texture_t *t, int transform, int alpha)
 442 {
 443         int             i;
 444         float   os = turbsin[(int)(realtime * TURBSCALE) & 255], ot = turbsin[(int)(realtime * TURBSCALE + 96.0) & 255];
 445         glpoly_t *p;
 446         float   *wv, *v;
 447         wv = wvert;
 448         for (p = s->polys;p;p = p->next)
 449         {
 450                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 451                 {
 452                         if (transform)
 453                                 softwaretransform(v, wv);
 454                         else
 455                                 VectorCopy(v, wv);
 456                         if (r_waterripple.value)
 457                                 wv[2] += r_waterripple.value * turbsin[(int)((wv[0]*(1.0f/32.0f)+realtime) * TURBSCALE) & 255] * turbsin[(int)((wv[1]*(1.0f/32.0f)+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 458                         wv[3] = wv[4] = wv[5] = 128.0f;
 459                         wv += 6;
 460                 }
 461         }
 462         if (s->dlightframe == r_dlightframecount && r_dynamic.value)
 463                 RSurf_Light(s->dlightbits, s->polys);
 464         wv = wvert;
 465         // FIXME: make fog texture if water texture is transparent?
 466         for (p=s->polys ; p ; p=p->next)
 467         {
 468                 transpolybegin(t->gl_texturenum, t->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 469                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 470                         transpolyvert(wv[0], wv[1], wv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), wv[3], wv[4], wv[5], alpha);
 471                 transpolyend();
 472         }
 473 }
 474
 475 void RSurf_DrawWall(msurface_t *s, texture_t *t, int transform)
 476 {
 477         int             i, lit = false, polys = 0, verts = 0;
 478         float   *v, *wv;
 479         glpoly_t *p;
 480         wallpoly_t *wp;
 481         wallvert_t *out;
 482         // check for lightmap modification
 483         if (r_dynamic.value)
 484         {
 485                 if (r_ambient.value != s->cached_ambient || lighthalf != s->cached_lighthalf
 486                 || (s->styles[0] != 255 && d_lightstylevalue[s->styles[0]] != s->cached_light[0])
 487                 || (s->styles[1] != 255 && d_lightstylevalue[s->styles[1]] != s->cached_light[1])
 488                 || (s->styles[2] != 255 && d_lightstylevalue[s->styles[2]] != s->cached_light[2])
 489                 || (s->styles[3] != 255 && d_lightstylevalue[s->styles[3]] != s->cached_light[3]))
 490                         R_UpdateLightmap(s, s->lightmaptexturenum);
 491         }
 492         wv = wvert;
 493         for (p = s->polys;p;p = p->next)
 494         {
 495                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 496                 {
 497                         if (transform)
 498                                 softwaretransform(v, wv);
 499                         else
 500                                 VectorCopy(v, wv);
 501                         wv[3] = wv[4] = wv[5] = 0.0f;
 502                         wv += 6;
 503                 }
 504                 verts += p->numverts;
 505                 polys++;
 506         }
 507         if ((currentwallpoly + polys > MAX_WALLPOLYS) || (currentwallvert+verts > MAX_WALLVERTS))
 508                 return;
 509         if (s->dlightframe == r_dlightframecount && r_dynamic.value)
 510                 lit = RSurf_Light(s->dlightbits, s->polys);
 511         wv = wvert;
 512         wp = &wallpoly[currentwallpoly];
 513         out = &wallvert[currentwallvert];
 514         currentwallpoly += polys;
 515         for (p = s->polys;p;p = p->next)
 516         {
 517                 v = p->verts[0];
 518                 wp->texnum = (unsigned short) t->gl_texturenum;
 519                 wp->lighttexnum = (unsigned short) (lightmap_textures + s->lightmaptexturenum);
 520                 wp->glowtexnum = (unsigned short) t->gl_glowtexturenum;
 521                 wp->firstvert = currentwallvert;
 522                 wp->numverts = p->numverts;
 523                 wp->lit = lit;
 524                 wp++;
 525                 currentwallvert += p->numverts;
 526                 for (i = 0;i < p->numverts;i++, v += VERTEXSIZE, wv += 6, out++)
 527                 {
 528                         if (lit)
 529                         {
 530                                 if (lighthalf)
 531                                 {
 532                                         out->r = (byte) (bound(0, (int) wv[3] >> 1, 255));
 533                                         out->g = (byte) (bound(0, (int) wv[4] >> 1, 255));
 534                                         out->b = (byte) (bound(0, (int) wv[5] >> 1, 255));
 535                                         out->a = 255;
 536                                 }
 537                                 else
 538                                 {
 539                                         out->r = (byte) (bound(0, (int) wv[3], 255));
 540                                         out->g = (byte) (bound(0, (int) wv[4], 255));
 541                                         out->b = (byte) (bound(0, (int) wv[5], 255));
 542                                         out->a = 255;
 543                                 }
 544                         }
 545                         out->vert[0] = wv[0];
 546                         out->vert[1] = wv[1];
 547                         out->vert[2] = wv[2];
 548                         out->s = v[3];
 549                         out->t = v[4];
 550                         out->u = v[5];
 551                         out->v = v[6];
 552                 }
 553         }
 554 }
 555
 556 // LordHavoc: transparent brush models
 557 extern int r_dlightframecount;
 558 extern float modelalpha;
 559
 560 void RSurf_DrawWallVertex(msurface_t *s, texture_t *t, int transform, int isbmodel)
 561 {
 562         int i, alpha, size3;
 563         float *v, *wv, scale;
 564         glpoly_t *p;
 565         byte *lm;
 566         alpha = (int) (modelalpha * 255.0f);
 567         size3 = ((s->extents[0]>>4)+1)*((s->extents[1]>>4)+1)*3; // *3 for colored lighting
 568         wv = wvert;
 569         for (p = s->polys;p;p = p->next)
 570         {
 571                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 572                 {
 573                         if (transform)
 574                                 softwaretransform(v, wv);
 575                         else
 576                                 VectorCopy(v, wv);
 577                         wv[3] = wv[4] = wv[5] = r_ambient.value * 2.0f;
 578                         if (s->styles[0] != 255)
 579                         {
 580                                 lm = (byte *)((long) s->samples + (int) v[7]);
 581                                 scale = d_lightstylevalue[s->styles[0]] * (1.0f / 128.0f);wv[3] += lm[size3*0+0] * scale;wv[4] += lm[size3*0+1] * scale;wv[5] += lm[size3*0+2] * scale;
 582                                 if (s->styles[1] != 255)
 583                                 {
 584                                         scale = d_lightstylevalue[s->styles[1]] * (1.0f / 128.0f);wv[3] += lm[size3*1+0] * scale;wv[4] += lm[size3*1+1] * scale;wv[5] += lm[size3*1+2] * scale;
 585                                         if (s->styles[2] != 255)
 586                                         {
 587                                                 scale = d_lightstylevalue[s->styles[2]] * (1.0f / 128.0f);wv[3] += lm[size3*2+0] * scale;wv[4] += lm[size3*2+1] * scale;wv[5] += lm[size3*2+2] * scale;
 588                                                 if (s->styles[3] != 255)
 589                                                 {
 590                                                         scale = d_lightstylevalue[s->styles[3]] * (1.0f / 128.0f);wv[3] += lm[size3*3+0] * scale;wv[4] += lm[size3*3+1] * scale;wv[5] += lm[size3*3+2] * scale;
 591                                                 }
 592                                         }
 593                                 }
 594                         }
 595                         wv += 6;
 596                 }
 597         }
 598         if (s->dlightframe == r_dlightframecount && r_dynamic.value)
 599                 RSurf_Light(s->dlightbits, s->polys);
 600         wv = wvert;
 601         if (isbmodel && (currententity->colormod[0] != 1 || currententity->colormod[1] != 1 || currententity->colormod[2] != 1))
 602         {
 603                 for (p = s->polys;p;p = p->next)
 604                 {
 605                         v = p->verts[0];
 606                         transpolybegin(t->gl_texturenum, t->gl_glowtexturenum, 0, currententity->effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 607                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 608                                 transpolyvert(wv[0], wv[1], wv[2], v[3], v[4], wv[3] * currententity->colormod[0], wv[4] * currententity->colormod[1], wv[5] * currententity->colormod[2], alpha);
 609                         transpolyend();
 610                 }
 611         }
 612         else
 613         {
 614                 for (p = s->polys;p;p = p->next)
 615                 {
 616                         v = p->verts[0];
 617                         transpolybegin(t->gl_texturenum, t->gl_glowtexturenum, 0, currententity->effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 618                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 619                                 transpolyvert(wv[0], wv[1], wv[2], v[3], v[4], wv[3], wv[4], wv[5], alpha);
 620                         transpolyend();
 621                 }
 622         }
 623 }
 624
 625 /*
 626 ================
 627 DrawTextureChains
 628 ================
 629 */
 630 extern qboolean hlbsp;
 631 extern char skyname[];
 632 void R_DrawSurf(msurface_t *s, int isbmodel, int vertexlit)
 633 {
 634         texture_t *t;
 635         if (s->flags & SURF_DRAWSKY)
 636         {
 637                 skyisvisible = true;
 638                 if (!hlbsp) // LordHavoc: HalfLife maps have freaky skypolys...
 639                         RSurf_DrawSky(s, false);
 640                 return;
 641         }
 642         t = R_TextureAnimation (s->texinfo->texture);
 643         if (s->flags & SURF_DRAWTURB)
 644         {
 645                 RSurf_DrawWater(s, t, false, s->flags & SURF_DRAWNOALPHA ? 255 : r_wateralpha.value*255.0f);
 646                 return;
 647         }
 648         if (vertexlit)
 649                 RSurf_DrawWallVertex(s, t, false, false);
 650         else
 651                 RSurf_DrawWall(s, t, false);
 652 }
 653
 654 void DrawTextureChains (void)
 655 {
 656         int                     n;
 657         msurface_t      *s;
 658         texture_t       *t;
 659
 660         for (n = 0;n < cl.worldmodel->numtextures;n++)
 661         {
 662                 if (!cl.worldmodel->textures[n] || !(s = cl.worldmodel->textures[n]->texturechain))
 663                         continue;
 664                 cl.worldmodel->textures[n]->texturechain = NULL;
 665 //              for (;s;s = s->texturechain)
 666 //                      R_DrawSurf(s, false, gl_vertex.value);
 667                 // LordHavoc: decide the render type only once, because the surface properties were determined by texture anyway
 668                 // sky
 669                 if (s->flags & SURF_DRAWSKY)
 670                 {
 671                         skyisvisible = true;
 672                         if (!hlbsp) // LordHavoc: HalfLife maps have freaky skypolys...
 673                                 for (;s;s = s->texturechain)
 674                                         RSurf_DrawSky(s, false);
 675                         continue;
 676                 }
 677                 t = R_TextureAnimation (cl.worldmodel->textures[n]);
 678                 // subdivided water surface warp
 679                 if (s->flags & SURF_DRAWTURB)
 680                 {
 681                         int alpha = s->flags & SURF_DRAWNOALPHA ? 255 : r_wateralpha.value*255.0f;
 682                         for (;s;s = s->texturechain)
 683                                 RSurf_DrawWater(s, t, false, alpha);
 684                         continue;
 685                 }
 686                 if (gl_vertex.value)
 687                         for (;s;s = s->texturechain)
 688                                 RSurf_DrawWallVertex(s, t, false, false);
 689                 else
 690                         for (;s;s = s->texturechain)
 691                                 RSurf_DrawWall(s, t, false);
 692         }
 693 }
 694
 695 void R_NoVisMarkLights (vec3_t lightorigin, dlight_t *light, int bit, int bitindex, model_t *model);
 696
 697 /*
 698 =================
 699 R_DrawBrushModel
 700 =================
 701 */
 702 void R_DrawBrushModel (entity_t *e)
 703 {
 704         int                     i;
 705         vec3_t          mins, maxs;
 706         msurface_t      *s;
 707         model_t         *clmodel;
 708         int     rotated, vertexlit = false;
 709         texture_t       *t;
 710         vec3_t          org;
 711
 712         currententity = e;
 713
 714         clmodel = e->model;
 715
 716         if (e->angles[0] || e->angles[1] || e->angles[2])
 717         {
 718                 rotated = true;
 719                 for (i=0 ; i<3 ; i++)
 720                 {
 721                         mins[i] = e->origin[i] - clmodel->radius;
 722                         maxs[i] = e->origin[i] + clmodel->radius;
 723                 }
 724         }
 725         else
 726         {
 727                 rotated = false;
 728                 VectorAdd (e->origin, clmodel->mins, mins);
 729                 VectorAdd (e->origin, clmodel->maxs, maxs);
 730         }
 731
 732         if (R_CullBox (mins, maxs))
 733                 return;
 734
 735         VectorSubtract (r_refdef.vieworg, e->origin, modelorg);
 736         if (rotated)
 737         {
 738                 vec3_t  temp;
 739                 vec3_t  forward, right, up;
 740
 741                 VectorCopy (modelorg, temp);
 742                 AngleVectors (e->angles, forward, right, up);
 743                 modelorg[0] = DotProduct (temp, forward);
 744                 modelorg[1] = -DotProduct (temp, right);
 745                 modelorg[2] = DotProduct (temp, up);
 746         }
 747
 748         s = &clmodel->surfaces[clmodel->firstmodelsurface];
 749
 750 // calculate dynamic lighting for bmodel if it's not an
 751 // instanced model
 752         for (i = 0;i < MAX_DLIGHTS;i++)
 753         {
 754                 if ((cl_dlights[i].die < cl.time) || (!cl_dlights[i].radius))
 755                         continue;
 756
 757                 VectorSubtract(cl_dlights[i].origin, currententity->origin, org);
 758                 R_NoVisMarkLights (org, &cl_dlights[i], 1<<(i&31), i >> 5, clmodel);
 759         }
 760         vertexlit = modelalpha != 1 || clmodel->firstmodelsurface == 0 || (currententity->effects & EF_FULLBRIGHT) || currententity->colormod[0] != 1 || currententity->colormod[2] != 1 || currententity->colormod[2] != 1;
 761
 762 e->angles[0] = -e->angles[0];   // stupid quake bug
 763         softwaretransformforentity (e);
 764 e->angles[0] = -e->angles[0];   // stupid quake bug
 765
 766         // draw texture
 767         for (i = 0;i < clmodel->nummodelsurfaces;i++, s++)
 768         {
 769                 if (((s->flags & SURF_PLANEBACK) == 0) == (PlaneDiff(modelorg, s->plane) >= 0))
 770                 {
 771 //                      R_DrawSurf(s, true, vertexlit || s->texinfo->texture->transparent);
 772                         if (s->flags & SURF_DRAWSKY)
 773                         {
 774                                 RSurf_DrawSky(s, true);
 775                                 continue;
 776                         }
 777                         t = R_TextureAnimation (s->texinfo->texture);
 778                         if (s->flags & SURF_DRAWTURB)
 779                         {
 780                                 RSurf_DrawWater(s, t, true, s->flags & SURF_DRAWNOALPHA ? 255 : r_wateralpha.value*255.0f);
 781                                 continue;
 782                         }
 783                         if (vertexlit || s->texinfo->texture->transparent)
 784                                 RSurf_DrawWallVertex(s, t, true, true);
 785                         else
 786                                 RSurf_DrawWall(s, t, true);
 787                 }
 788         }
 789         UploadLightmaps();
 790 }
 791
 792 /*
 793 =============================================================
 794
 795         WORLD MODEL
 796
 797 =============================================================
 798 */
 799
 800 void R_StoreEfrags (efrag_t **ppefrag);
 801
 802 struct nodestack_s
 803 {
 804         int side;
 805         mnode_t *node;
 806 } nodestack[8192];
 807
 808 /*
 809 ================
 810 R_WorldNode
 811 ================
 812 */
 813 void R_WorldNode ()
 814 {
 815         int side, texsort, vertex;
 816         struct nodestack_s *nstack;
 817         mnode_t *node;
 818         mleaf_t *pleaf;
 819         msurface_t *surf, *endsurf, **mark, **endmark;
 820         nstack = nodestack;
 821         texsort = gl_texsort.value;
 822         vertex = gl_vertex.value;
 823
 824         if (!(node = cl.worldmodel->nodes))
 825                 return;
 826
 827         while(1)
 828         {
 829         // if a leaf node, draw stuff
 830                 if (node->contents < 0)
 831                 {
 832                         if (node->contents != CONTENTS_SOLID)
 833                         {
 834                                 pleaf = (mleaf_t *)node;
 835
 836                                 c_leafs++;
 837                                 if (pleaf->nummarksurfaces)
 838                                 {
 839                                         mark = pleaf->firstmarksurface;
 840                                         endmark = mark + pleaf->nummarksurfaces;
 841                                         do
 842                                         {
 843                                                 (*mark)->visframe = r_framecount;
 844                                                 mark++;
 845                                         }
 846                                         while (mark < endmark);
 847                                 }
 848
 849                                 // deal with model fragments in this leaf
 850                                 if (pleaf->efrags)
 851                                         R_StoreEfrags (&pleaf->efrags);
 852                         }
 853
 854                         if (nstack <= nodestack)
 855                                 break;
 856                         nstack--;
 857                         node = nstack->node;
 858                         side = nstack->side;
 859                         goto loc0;
 860                 }
 861
 862                 c_nodes++;
 863
 864                 // node is just a decision point, so go down the apropriate sides
 865
 866                 // find which side of the node we are on
 867                 side = PlaneDist(modelorg, node->plane) < node->plane->dist;
 868
 869                 // recurse down the children, front side first
 870                 if (node->children[side]->visframe == r_visframecount && R_NotCulledBox(node->children[side]->minmaxs, node->children[side]->minmaxs+3))
 871                 {
 872                         nstack->node = node;
 873                         nstack->side = !side; // go down back side when we come back up
 874                         nstack++;
 875                         node = node->children[side];
 876                         continue;
 877                 }
 878                 side = !side;
 879 loc0:
 880
 881         // draw stuff
 882                 if (node->numsurfaces)
 883                 {
 884                         surf = cl.worldmodel->surfaces + node->firstsurface;
 885                         endsurf = surf + node->numsurfaces;
 886
 887                         if (texsort)
 888                         {
 889                                 if (side)
 890                                 {
 891                                         do
 892                                         {
 893                                                 if (surf->visframe == r_framecount && !(surf->flags & SURF_PLANEBACK))
 894                                                 {
 895                                                         surf->texturechain = surf->texinfo->texture->texturechain;
 896                                                         surf->texinfo->texture->texturechain = surf;
 897                                                 }
 898                                                 surf++;
 899                                         }
 900                                         while (surf < endsurf);
 901                                 }
 902                                 else
 903                                 {
 904                                         do
 905                                         {
 906                                                 if (surf->visframe == r_framecount && (surf->flags & SURF_PLANEBACK))
 907                                                 {
 908                                                         surf->texturechain = surf->texinfo->texture->texturechain;
 909                                                         surf->texinfo->texture->texturechain = surf;
 910                                                 }
 911                                                 surf++;
 912                                         }
 913                                         while (surf < endsurf);
 914                                 }
 915                         }
 916                         else
 917                         {
 918                                 if (side)
 919                                 {
 920                                         do
 921                                         {
 922                                                 if (surf->visframe == r_framecount && !(surf->flags & SURF_PLANEBACK))
 923                                                         R_DrawSurf(surf, false, vertex);
 924                                                 surf++;
 925                                         }
 926                                         while (surf < endsurf);
 927                                 }
 928                                 else
 929                                 {
 930                                         do
 931                                         {
 932                                                 if (surf->visframe == r_framecount && (surf->flags & SURF_PLANEBACK))
 933                                                         R_DrawSurf(surf, false, vertex);
 934                                                 surf++;
 935                                         }
 936                                         while (surf < endsurf);
 937                                 }
 938                         }
 939                 }
 940
 941         // recurse down the back side
 942                 if (node->children[side]->visframe == r_visframecount && R_NotCulledBox(node->children[side]->minmaxs, node->children[side]->minmaxs+3))
 943                 {
 944                         node = node->children[side];
 945                         continue;
 946                 }
 947
 948                 if (nstack <= nodestack)
 949                         break;
 950                 nstack--;
 951                 node = nstack->node;
 952                 side = nstack->side;
 953                 goto loc0;
 954         }
 955 }
 956
 957
 958 /*
 959 =============
 960 R_DrawWorld
 961 =============
 962 */
 963 void R_DrawWorld (void)
 964 {
 965         entity_t        ent;
 966
 967         memset (&ent, 0, sizeof(ent));
 968         ent.model = cl.worldmodel;
 969         ent.colormod[0] = ent.colormod[1] = ent.colormod[2] = 1;
 970         modelalpha = ent.alpha = 1;
 971         ent.scale = 1;
 972
 973         VectorCopy (r_refdef.vieworg, modelorg);
 974
 975         currententity = &ent;
 976
 977         softwaretransformidentity(); // LordHavoc: clear transform
 978
 979         if (cl.worldmodel)
 980                 R_WorldNode ();
 981
 982         R_PushDlights (); // now mark the lit surfaces
 983
 984         DrawTextureChains ();
 985 }
 986
 987
 988 /*
 989 ===============
 990 R_MarkLeaves
 991 ===============
 992 */
 993 void R_MarkLeaves (void)
 994 {
 995         byte    *vis;
 996         mnode_t *node;
 997         int             i;
 998
 999         if (r_oldviewleaf == r_viewleaf && !r_novis.value)
1000                 return;
1001
1002         r_visframecount++;
1003         r_oldviewleaf = r_viewleaf;
1004
1005         if (r_novis.value)
1006         {
1007                 for (i=0 ; i<cl.worldmodel->numleafs ; i++)
1008                 {
1009                         node = (mnode_t *)&cl.worldmodel->leafs[i+1];
1010                         do
1011                         {
1012                                 if (node->visframe == r_visframecount)
1013                                         break;
1014                                 node->visframe = r_visframecount;
1015                                 node = node->parent;
1016                         } while (node);
1017                 }
1018         }
1019         else
1020         {
1021                 vis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
1022
1023                 for (i=0 ; i<cl.worldmodel->numleafs ; i++)
1024                 {
1025                         if (vis[i>>3] & (1<<(i&7)))
1026                         {
1027                                 node = (mnode_t *)&cl.worldmodel->leafs[i+1];
1028                                 do
1029                                 {
1030                                         if (node->visframe == r_visframecount)
1031                                                 break;
1032                                         node->visframe = r_visframecount;
1033                                         node = node->parent;
1034                                 } while (node);
1035                         }
1036                 }
1037         }
1038 }
1039
1040
1041
1042 /*
1043 =============================================================================
1044
1045   LIGHTMAP ALLOCATION
1046
1047 =============================================================================
1048 */
1049
1050 // returns a texture number and the position inside it
1051 int AllocBlock (int w, int h, short *x, short *y)
1052 {
1053         int             i, j;
1054         int             best, best2;
1055         int             texnum;
1056
1057         for (texnum=0 ; texnum<MAX_LIGHTMAPS ; texnum++)
1058         {
1059                 best = BLOCK_HEIGHT;
1060
1061                 for (i=0 ; i<BLOCK_WIDTH-w ; i+=lightmapalign) // LordHavoc: NVIDIA has broken subimage, so align the lightmaps
1062                 {
1063                         best2 = 0;
1064
1065                         for (j=0 ; j<w ; j++)
1066                         {
1067                                 if (allocated[texnum][i+j] >= best)
1068                                         break;
1069                                 if (allocated[texnum][i+j] > best2)
1070                                         best2 = allocated[texnum][i+j];
1071                         }
1072                         if (j == w)
1073                         {       // this is a valid spot
1074                                 *x = i;
1075                                 *y = best = best2;
1076                         }
1077                 }
1078
1079                 if (best + h > BLOCK_HEIGHT)
1080                         continue;
1081
1082                 if (nosubimagefragments || nosubimage)
1083                 {
1084                         if (!lightmaps[texnum])
1085                         {
1086                                 lightmaps[texnum] = qmalloc(BLOCK_WIDTH*BLOCK_HEIGHT*4);
1087                                 memset(lightmaps[texnum], 0, BLOCK_WIDTH*BLOCK_HEIGHT*4);
1088                         }
1089                 }
1090                 // LordHavoc: clear texture to blank image, fragments are uploaded using subimage
1091                 else if (!allocated[texnum][0])
1092                 {
1093                         byte blank[BLOCK_WIDTH*BLOCK_HEIGHT*3];
1094                         memset(blank, 0, sizeof(blank));
1095                         if(r_upload.value)
1096                         {
1097                                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + texnum);
1098                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1099                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1100                                 if (lightmaprgba)
1101                                         glTexImage2D (GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, blank);
1102                                 else
1103                                         glTexImage2D (GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, blank);
1104                         }
1105                 }
1106
1107                 for (i=0 ; i<w ; i++)
1108                         allocated[texnum][*x + i] = best + h;
1109
1110                 return texnum;
1111         }
1112
1113         Sys_Error ("AllocBlock: full");
1114         return 0;
1115 }
1116
1117
1118 mvertex_t       *r_pcurrentvertbase;
1119 model_t         *currentmodel;
1120
1121 int     nColinElim;
1122
1123 /*
1124 ================
1125 BuildSurfaceDisplayList
1126 ================
1127 */
1128 void BuildSurfaceDisplayList (msurface_t *fa)
1129 {
1130         int                     i, j, lindex, lnumverts;
1131         medge_t         *pedges, *r_pedge;
1132         int                     vertpage;
1133         float           *vec;
1134         float           s, t;
1135         glpoly_t        *poly;
1136
1137 // reconstruct the polygon
1138         pedges = currentmodel->edges;
1139         lnumverts = fa->numedges;
1140         vertpage = 0;
1141
1142         //
1143         // draw texture
1144         //
1145         poly = Hunk_Alloc (sizeof(glpoly_t) + (lnumverts-4) * VERTEXSIZE*sizeof(float));
1146         poly->next = fa->polys;
1147         poly->flags = fa->flags;
1148         fa->polys = poly;
1149         poly->numverts = lnumverts;
1150
1151         for (i=0 ; i<lnumverts ; i++)
1152         {
1153                 lindex = currentmodel->surfedges[fa->firstedge + i];
1154
1155                 if (lindex > 0)
1156                 {
1157                         r_pedge = &pedges[lindex];
1158                         vec = r_pcurrentvertbase[r_pedge->v[0]].position;
1159                 }
1160                 else
1161                 {
1162                         r_pedge = &pedges[-lindex];
1163                         vec = r_pcurrentvertbase[r_pedge->v[1]].position;
1164                 }
1165                 s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
1166                 t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
1167
1168                 VectorCopy (vec, poly->verts[i]);
1169                 poly->verts[i][3] = s / fa->texinfo->texture->width;
1170                 poly->verts[i][4] = t / fa->texinfo->texture->height;
1171
1172                 //
1173                 // lightmap texture coordinates
1174                 //
1175                 s -= fa->texturemins[0];
1176                 t -= fa->texturemins[1];
1177                 s += 8;
1178                 t += 8;
1179                 // LordHavoc: calc lightmap data offset
1180                 j = (bound(0l, (int)t>>4, fa->extents[1]>>4) * ((fa->extents[0]>>4)+1) + bound(0l, (int)s>>4, fa->extents[0]>>4)) * 3;
1181                 poly->verts[i][7] = j;
1182                 s += fa->light_s*16;
1183                 s /= BLOCK_WIDTH*16; //fa->texinfo->texture->width;
1184
1185                 t += fa->light_t*16;
1186                 t /= BLOCK_HEIGHT*16; //fa->texinfo->texture->height;
1187
1188                 poly->verts[i][5] = s;
1189                 poly->verts[i][6] = t;
1190         }
1191
1192         //
1193         // remove co-linear points - Ed
1194         //
1195         /*
1196         if (!gl_keeptjunctions.value)
1197         {
1198                 for (i = 0 ; i < lnumverts ; ++i)
1199                 {
1200                         vec3_t v1, v2;
1201                         float *prev, *this, *next;
1202
1203                         prev = poly->verts[(i + lnumverts - 1) % lnumverts];
1204                         this = poly->verts[i];
1205                         next = poly->verts[(i + 1) % lnumverts];
1206
1207                         VectorSubtract( this, prev, v1 );
1208                         VectorNormalize( v1 );
1209                         VectorSubtract( next, prev, v2 );
1210                         VectorNormalize( v2 );
1211
1212                         // skip co-linear points
1213                         #define COLINEAR_EPSILON 0.001
1214                         if ((fabs( v1[0] - v2[0] ) <= COLINEAR_EPSILON) &&
1215                                 (fabs( v1[1] - v2[1] ) <= COLINEAR_EPSILON) &&
1216                                 (fabs( v1[2] - v2[2] ) <= COLINEAR_EPSILON))
1217                         {
1218                                 int j;
1219                                 for (j = i + 1; j < lnumverts; ++j)
1220                                 {
1221                                         int k;
1222                                         for (k = 0; k < VERTEXSIZE; ++k)
1223                                                 poly->verts[j - 1][k] = poly->verts[j][k];
1224                                 }
1225                                 --lnumverts;
1226                                 ++nColinElim;
1227                                 // retry next vertex next time, which is now current vertex
1228                                 --i;
1229                         }
1230                 }
1231         }
1232         */
1233         poly->numverts = lnumverts;
1234 }
1235
1236 /*
1237 ========================
1238 GL_CreateSurfaceLightmap
1239 ========================
1240 */
1241 void GL_CreateSurfaceLightmap (msurface_t *surf)
1242 {
1243         int             smax, tmax;
1244
1245         if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
1246                 return;
1247
1248         smax = (surf->extents[0]>>4)+1;
1249         tmax = (surf->extents[1]>>4)+1;
1250
1251         surf->lightmaptexturenum = AllocBlock (smax, tmax, &surf->light_s, &surf->light_t);
1252         if (nosubimage || nosubimagefragments)
1253                 return;
1254         glBindTexture(GL_TEXTURE_2D, lightmap_textures + surf->lightmaptexturenum);
1255         smax = ((surf->extents[0]>>4)+lightmapalign) & lightmapalignmask;
1256         if (lightmaprgba)
1257         {
1258                 R_BuildLightMap (surf, templight, smax * 4);
1259                 if(r_upload.value)
1260                         glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
1261         }
1262         else
1263         {
1264                 R_BuildLightMap (surf, templight, smax * 3);
1265                 if(r_upload.value)
1266                         glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
1267         }
1268 }
1269
1270
1271 /*
1272 ==================
1273 GL_BuildLightmaps
1274
1275 Builds the lightmap texture
1276 with all the surfaces from all brush models
1277 ==================
1278 */
1279 void GL_BuildLightmaps (void)
1280 {
1281         int             i, j;
1282         model_t *m;
1283
1284         memset (allocated, 0, sizeof(allocated));
1285
1286         r_framecount = 1;               // no dlightcache
1287
1288         if (gl_nosubimagefragments.value)
1289                 nosubimagefragments = 1;
1290         else
1291                 nosubimagefragments = 0;
1292
1293         if (gl_nosubimage.value)
1294                 nosubimage = 1;
1295         else
1296                 nosubimage = 0;
1297
1298         if (gl_lightmaprgba.value)
1299         {
1300                 lightmaprgba = true;
1301                 lightmapbytes = 4;
1302         }
1303         else
1304         {
1305                 lightmaprgba = false;
1306                 lightmapbytes = 3;
1307         }
1308
1309         // LordHavoc: NVIDIA seems to have a broken glTexSubImage2D,
1310         //            it needs to be aligned on 4 pixel boundaries...
1311         //            so I implemented an adjustable lightmap alignment
1312         if (gl_lightmapalign.value < 1)
1313                 gl_lightmapalign.value = 1;
1314         if (gl_lightmapalign.value > 16)
1315                 gl_lightmapalign.value = 16;
1316         lightmapalign = 1;
1317         while (lightmapalign < gl_lightmapalign.value)
1318                 lightmapalign <<= 1;
1319         gl_lightmapalign.value = lightmapalign;
1320         lightmapalignmask = ~(lightmapalign - 1);
1321         if (nosubimagefragments || nosubimage)
1322         {
1323                 lightmapalign = 1;
1324                 lightmapalignmask = ~0;
1325         }
1326
1327         if (!lightmap_textures)
1328         {
1329                 lightmap_textures = texture_extension_number;
1330                 texture_extension_number += MAX_LIGHTMAPS;
1331         }
1332
1333         for (j=1 ; j<MAX_MODELS ; j++)
1334         {
1335                 m = cl.model_precache[j];
1336                 if (!m)
1337                         break;
1338                 if (m->name[0] == '*')
1339                         continue;
1340                 r_pcurrentvertbase = m->vertexes;
1341                 currentmodel = m;
1342                 for (i=0 ; i<m->numsurfaces ; i++)
1343                 {
1344                         if ( m->surfaces[i].flags & SURF_DRAWTURB )
1345                                 continue;
1346                         if ( m->surfaces[i].flags & SURF_DRAWSKY )
1347                                 continue;
1348                         GL_CreateSurfaceLightmap (m->surfaces + i);
1349                         BuildSurfaceDisplayList (m->surfaces + i);
1350                 }
1351         }
1352
1353         if (nosubimage || nosubimagefragments)
1354         {
1355                 if(r_upload.value)
1356                         if (gl_mtexable)
1357                                 qglSelectTexture(gl_mtex_enum+1);
1358                 for (i = 0;i < MAX_LIGHTMAPS;i++)
1359                 {
1360                         if (!allocated[i][0])
1361                                 break;
1362                         lightmapupdate[i][0] = BLOCK_HEIGHT;
1363                         lightmapupdate[i][1] = 0;
1364                         if(r_upload.value)
1365                         {
1366                                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
1367                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1368                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1369                                 if (lightmaprgba)
1370                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
1371                                 else
1372                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
1373                         }
1374                 }
1375                 if(r_upload.value)
1376                         if (gl_mtexable)
1377                                 qglSelectTexture(gl_mtex_enum+0);
1378         }
1379 }
1380