gl_textures.c

   1
   2 #include "quakedef.h"
   3
   4 cvar_t  r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
   5 cvar_t  r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
   6 cvar_t  r_picmip = {CVAR_SAVE, "r_picmip", "0"};
   7 cvar_t  r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
   8 cvar_t  r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
   9
  10 int             gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
  11 int             gl_filter_mag = GL_LINEAR;
  12
  13
  14 static mempool_t *texturemempool;
  15 static mempool_t *texturedatamempool;
  16 static mempool_t *textureprocessingmempool;
  17
  18 // note: this must not conflict with TEXF_ flags in r_textures.h
  19 // cleared when a texture is uploaded
  20 #define GLTEXF_UPLOAD 0x00010000
  21 // bitmask for mismatch checking
  22 #define GLTEXF_IMPORTANTBITS (0)
  23 // set when image is uploaded and freed
  24 #define GLTEXF_DESTROYED 0x00040000
  25
  26 // size of images which hold fragment textures, ignores picmip and max_size
  27 static int block_size;
  28
  29 typedef struct
  30 {
  31         int textype;
  32         int inputbytesperpixel;
  33         int internalbytesperpixel;
  34         int glformat;
  35         int glinternalformat;
  36 }
  37 textypeinfo_t;
  38
  39 static textypeinfo_t textype_qpalette       = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 3};
  40 static textypeinfo_t textype_rgb            = {TEXTYPE_RGB     , 3, 3, GL_RGB , 3};
  41 static textypeinfo_t textype_rgba           = {TEXTYPE_RGBA    , 4, 4, GL_RGBA, 3};
  42 static textypeinfo_t textype_qpalette_alpha = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 4};
  43 static textypeinfo_t textype_rgba_alpha     = {TEXTYPE_RGBA    , 4, 4, GL_RGBA, 4};
  44
  45 // a tiling texture (most common type)
  46 #define GLIMAGETYPE_TILE 0
  47 // a fragments texture (contains one or more fragment textures)
  48 #define GLIMAGETYPE_FRAGMENTS 1
  49
  50 #define GLTEXTURETYPE_1D 0
  51 #define GLTEXTURETYPE_2D 1
  52 #define GLTEXTURETYPE_3D 2
  53 #define GLTEXTURETYPE_CUBEMAP 3
  54
  55 static int cubemapside[6] =
  56 {
  57         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  58         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  59         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  60         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  61         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  62         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  63 };
  64
  65 // a gltextureimage can have one (or more if fragments) gltextures inside
  66 typedef struct gltextureimage_s
  67 {
  68         struct gltextureimage_s *imagechain;
  69         int texturecount;
  70         int type; // one of the GLIMAGETYPE_ values
  71         int texturetype; // one of the GLTEXTURETYPE_ values
  72         int sides; // 1 or 6 depending on texturetype
  73         int texnum; // GL texture slot number
  74         int width, height, depth; // 3D texture support
  75         int bytesperpixel; // bytes per pixel
  76         int glformat; // GL_RGB or GL_RGBA
  77         int glinternalformat; // 3 or 4
  78         int flags;
  79         short *blockallocation; // fragment allocation (2D only)
  80 }
  81 gltextureimage_t;
  82
  83 typedef struct gltexture_s
  84 {
  85         // this field is exposed to the R_GetTexture macro, for speed reasons
  86         // (must be identical in rtexture_t)
  87         int texnum; // GL texture slot number
  88
  89         // pointer to texturepool (check this to see if the texture is allocated)
  90         struct gltexturepool_s *pool;
  91         // pointer to next texture in texturepool chain
  92         struct gltexture_s *chain;
  93         // pointer into gltextureimage array
  94         gltextureimage_t *image;
  95         // name of the texture (this might be removed someday), no duplicates
  96         char *identifier;
  97         // location in the image, and size
  98         int x, y, z, width, height, depth;
  99         // copy of the original texture(s) supplied to the upload function, for
 100         // delayed uploads (non-precached)
 101         qbyte *inputtexels;
 102         // original data size in *inputtexels
 103         int inputdatasize;
 104         // flags supplied to the LoadTexture function
 105         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 106         int flags;
 107         // pointer to one of the textype_ structs
 108         textypeinfo_t *textype;
 109         // one of the GLTEXTURETYPE_ values
 110         int texturetype;
 111 }
 112 gltexture_t;
 113
 114 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 115
 116 typedef struct gltexturepool_s
 117 {
 118         int sentinel;
 119         struct gltextureimage_s *imagechain;
 120         struct gltexture_s *gltchain;
 121         struct gltexturepool_s *next;
 122 }
 123 gltexturepool_t;
 124
 125 static gltexturepool_t *gltexturepoolchain = NULL;
 126
 127 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
 128 static int resizebuffersize = 0;
 129 static qbyte *texturebuffer;
 130 static int texturebuffersize = 0;
 131
 132 static int realmaxsize = 0;
 133
 134 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 135 {
 136         if (flags & TEXF_ALPHA)
 137         {
 138                 switch(textype)
 139                 {
 140                 case TEXTYPE_QPALETTE:
 141                         return &textype_qpalette_alpha;
 142                 case TEXTYPE_RGB:
 143                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
 144                         return NULL;
 145                 case TEXTYPE_RGBA:
 146                         return &textype_rgba_alpha;
 147                 default:
 148                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 149                         return NULL;
 150                 }
 151         }
 152         else
 153         {
 154                 switch(textype)
 155                 {
 156                 case TEXTYPE_QPALETTE:
 157                         return &textype_qpalette;
 158                 case TEXTYPE_RGB:
 159                         return &textype_rgb;
 160                 case TEXTYPE_RGBA:
 161                         return &textype_rgba;
 162                 default:
 163                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 164                         return NULL;
 165                 }
 166         }
 167 }
 168
 169 static void R_UploadTexture(gltexture_t *t);
 170
 171 static void R_PrecacheTexture(gltexture_t *glt)
 172 {
 173         int precache;
 174         precache = false;
 175         if (glt->flags & TEXF_ALWAYSPRECACHE)
 176                 precache = true;
 177         else if (r_precachetextures.integer >= 2)
 178                 precache = true;
 179         else if (r_precachetextures.integer >= 1)
 180                 if (glt->flags & TEXF_PRECACHE)
 181                         precache = true;
 182
 183         if (precache)
 184                 R_UploadTexture(glt);
 185 }
 186
 187 int R_RealGetTexture(rtexture_t *rt)
 188 {
 189         if (rt)
 190         {
 191                 gltexture_t *glt;
 192                 glt = (gltexture_t *)rt;
 193                 if (glt->flags & GLTEXF_UPLOAD)
 194                         R_UploadTexture(glt);
 195                 glt->texnum = glt->image->texnum;
 196                 return glt->image->texnum;
 197         }
 198         else
 199                 return 0;
 200 }
 201
 202 void R_FreeTexture(rtexture_t *rt)
 203 {
 204         gltexture_t *glt, **gltpointer;
 205         gltextureimage_t *image, **gltimagepointer;
 206
 207         glt = (gltexture_t *)rt;
 208         if (glt == NULL)
 209                 Host_Error("R_FreeTexture: texture == NULL\n");
 210
 211         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 212         if (*gltpointer == glt)
 213                 *gltpointer = glt->chain;
 214         else
 215                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
 216
 217         // note: if freeing a fragment texture, this will not make the claimed
 218         // space available for new textures unless all other fragments in the
 219         // image are also freed
 220         image = glt->image;
 221         image->texturecount--;
 222         if (image->texturecount < 1)
 223         {
 224                 for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
 225                 if (*gltimagepointer == image)
 226                         *gltimagepointer = image->imagechain;
 227                 else
 228                         Host_Error("R_FreeTexture: image not linked in pool\n");
 229                 if (image->texnum)
 230                         qglDeleteTextures(1, &image->texnum);
 231                 if (image->blockallocation)
 232                         Mem_Free(image->blockallocation);
 233                 Mem_Free(image);
 234         }
 235
 236         if (glt->identifier)
 237                 Mem_Free(glt->identifier);
 238         if (glt->inputtexels)
 239                 Mem_Free(glt->inputtexels);
 240         Mem_Free(glt);
 241 }
 242
 243 /*
 244 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
 245 {
 246         gltexture_t     *glt;
 247
 248         if (!identifier)
 249                 return NULL;
 250
 251         for (glt = pool->gltchain;glt;glt = glt->chain)
 252                 if (glt->identifier && !strcmp (identifier, glt->identifier))
 253                         return glt;
 254
 255         return NULL;
 256 }
 257 */
 258
 259 rtexturepool_t *R_AllocTexturePool(void)
 260 {
 261         gltexturepool_t *pool;
 262         if (texturemempool == NULL)
 263                 return NULL;
 264         pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 265         if (pool == NULL)
 266                 return NULL;
 267         pool->next = gltexturepoolchain;
 268         gltexturepoolchain = pool;
 269         pool->sentinel = TEXTUREPOOL_SENTINEL;
 270         return (rtexturepool_t *)pool;
 271 }
 272
 273 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 274 {
 275         gltexturepool_t *pool, **poolpointer;
 276         if (rtexturepool == NULL)
 277                 return;
 278         if (*rtexturepool == NULL)
 279                 return;
 280         pool = (gltexturepool_t *)(*rtexturepool);
 281         *rtexturepool = NULL;
 282         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 283                 Host_Error("R_FreeTexturePool: pool already freed\n");
 284         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 285         if (*poolpointer == pool)
 286                 *poolpointer = pool->next;
 287         else
 288                 Host_Error("R_FreeTexturePool: pool not linked\n");
 289         while (pool->gltchain)
 290                 R_FreeTexture((rtexture_t *)pool->gltchain);
 291         if (pool->imagechain)
 292                 Sys_Error("R_FreeTexturePool: not all images freed\n");
 293         Mem_Free(pool);
 294 }
 295
 296
 297 typedef struct
 298 {
 299         char *name;
 300         int minification, magnification;
 301 }
 302 glmode_t;
 303
 304 static glmode_t modes[] =
 305 {
 306         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 307         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 308         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 309         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 310         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 311         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 312 };
 313
 314 extern int gl_backend_rebindtextures;
 315
 316 static void GL_TextureMode_f (void)
 317 {
 318         int i;
 319         gltextureimage_t *image;
 320         gltexturepool_t *pool;
 321
 322         if (Cmd_Argc() == 1)
 323         {
 324                 for (i = 0;i < 6;i++)
 325                 {
 326                         if (gl_filter_min == modes[i].minification)
 327                         {
 328                                 Con_Printf ("%s\n", modes[i].name);
 329                                 return;
 330                         }
 331                 }
 332                 Con_Printf ("current filter is unknown???\n");
 333                 return;
 334         }
 335
 336         for (i = 0;i < 6;i++)
 337                 if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 338                         break;
 339         if (i == 6)
 340         {
 341                 Con_Printf ("bad filter name\n");
 342                 return;
 343         }
 344
 345         gl_filter_min = modes[i].minification;
 346         gl_filter_mag = modes[i].magnification;
 347
 348         // change all the existing mipmap texture objects
 349         // FIXME: force renderer(/client/something?) restart instead?
 350         for (pool = gltexturepoolchain;pool;pool = pool->next)
 351         {
 352                 for (image = pool->imagechain;image;image = image->imagechain)
 353                 {
 354                         // only update already uploaded images
 355                         if (!(image->flags & GLTEXF_UPLOAD))
 356                         {
 357                                 qglBindTexture(GL_TEXTURE_2D, image->texnum);
 358                                 if (image->flags & TEXF_MIPMAP)
 359                                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 360                                 else
 361                                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 362                                 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 363                         }
 364                 }
 365         }
 366         gl_backend_rebindtextures = true;
 367 }
 368
 369 static int R_CalcTexelDataSize (gltexture_t *glt)
 370 {
 371         int width2, height2, depth2, size;
 372         if (glt->flags & TEXF_FRAGMENT)
 373                 size = glt->width * glt->height * glt->depth;
 374         else
 375         {
 376                 if (r_max_size.integer > realmaxsize)
 377                         Cvar_SetValue("r_max_size", realmaxsize);
 378                 // calculate final size
 379                 for (width2 = 1;width2 < glt->width;width2 <<= 1);
 380                 for (height2 = 1;height2 < glt->height;height2 <<= 1);
 381                 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
 382                 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
 383                 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
 384                 for (depth2 >>= r_picmip.integer;depth2 > r_max_size.integer;depth2 >>= 1);
 385                 if (width2 < 1) width2 = 1;
 386                 if (height2 < 1) height2 = 1;
 387                 if (depth2 < 1) depth2 = 1;
 388
 389                 size = 0;
 390                 if (glt->flags & TEXF_MIPMAP)
 391                 {
 392                         while (width2 > 1 || height2 > 1 || depth2 > 1)
 393                         {
 394                                 size += width2 * height2 * depth2;
 395                                 if (width2 > 1)
 396                                         width2 >>= 1;
 397                                 if (height2 > 1)
 398                                         height2 >>= 1;
 399                                 if (depth2 > 1)
 400                                         depth2 >>= 1;
 401                         }
 402                         size++; // count the last 1x1 mipmap
 403                 }
 404                 else
 405                         size = width2 * height2 * depth2;
 406         }
 407         size *= glt->textype->internalbytesperpixel * glt->image->sides;
 408
 409         return size;
 410 }
 411
 412 void R_TextureStats_PrintTotal(void)
 413 {
 414         int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
 415         gltexture_t *glt;
 416         gltexturepool_t *pool;
 417         for (pool = gltexturepoolchain;pool;pool = pool->next)
 418         {
 419                 for (glt = pool->gltchain;glt;glt = glt->chain)
 420                 {
 421                         glsize = R_CalcTexelDataSize(glt);
 422                         total++;
 423                         totalt += glsize;
 424                         totalp += glt->inputdatasize;
 425                         if (!(glt->flags & GLTEXF_UPLOAD))
 426                         {
 427                                 loaded++;
 428                                 loadedt += glsize;
 429                                 loadedp += glt->inputdatasize;
 430                         }
 431                 }
 432         }
 433         Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
 434 }
 435
 436 static void R_TextureStats_f(void)
 437 {
 438         int loaded;
 439         gltexture_t *glt;
 440         gltexturepool_t *pool;
 441         Con_Printf("glsize input loaded mip alpha name\n");
 442         for (pool = gltexturepoolchain;pool;pool = pool->next)
 443         {
 444                 for (glt = pool->gltchain;glt;glt = glt->chain)
 445                 {
 446                         loaded = !(glt->flags & GLTEXF_UPLOAD);
 447                         Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
 448                 }
 449                 Con_Printf("pool %10p\n", pool);
 450         }
 451         R_TextureStats_PrintTotal();
 452 }
 453
 454 char engineversion[40];
 455
 456 static void r_textures_start(void)
 457 {
 458         // deal with size limits of various drivers (3dfx in particular)
 459         qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
 460         CHECKGLERROR
 461         // LordHavoc: allow any alignment
 462         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 463         CHECKGLERROR
 464
 465         // use the largest scrap texture size we can (not sure if this is really a good idea)
 466         for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
 467
 468         texturemempool = Mem_AllocPool("Texture Info");
 469         texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
 470         textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
 471 }
 472
 473 static void r_textures_shutdown(void)
 474 {
 475         rtexturepool_t *temp;
 476         while(gltexturepoolchain)
 477         {
 478                 temp = (rtexturepool_t *) gltexturepoolchain;
 479                 R_FreeTexturePool(&temp);
 480         }
 481
 482         resizebuffersize = 0;
 483         texturebuffersize = 0;
 484         resizebuffer = NULL;
 485         colorconvertbuffer = NULL;
 486         texturebuffer = NULL;
 487         Mem_FreePool(&texturemempool);
 488         Mem_FreePool(&texturedatamempool);
 489         Mem_FreePool(&textureprocessingmempool);
 490 }
 491
 492 static void r_textures_newmap(void)
 493 {
 494 }
 495
 496 void R_Textures_Init (void)
 497 {
 498         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
 499         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
 500         Cvar_RegisterVariable (&r_max_scrapsize);
 501         Cvar_RegisterVariable (&r_max_size);
 502         Cvar_RegisterVariable (&r_picmip);
 503         Cvar_RegisterVariable (&r_lerpimages);
 504         Cvar_RegisterVariable (&r_precachetextures);
 505
 506         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 507 }
 508
 509 void R_Textures_Frame (void)
 510 {
 511         // could do procedural texture animation here, if we keep track of which
 512         // textures were accessed this frame...
 513
 514         // free the resize buffers
 515         resizebuffersize = 0;
 516         if (resizebuffer)
 517         {
 518                 Mem_Free(resizebuffer);
 519                 resizebuffer = NULL;
 520         }
 521         if (colorconvertbuffer)
 522         {
 523                 Mem_Free(colorconvertbuffer);
 524                 colorconvertbuffer = NULL;
 525         }
 526 }
 527
 528 void R_MakeResizeBufferBigger(int size)
 529 {
 530         if (resizebuffersize < size)
 531         {
 532                 resizebuffersize = size;
 533                 if (resizebuffer)
 534                         Mem_Free(resizebuffer);
 535                 if (colorconvertbuffer)
 536                         Mem_Free(colorconvertbuffer);
 537                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 538                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 539                 if (!resizebuffer || !colorconvertbuffer)
 540                         Host_Error("R_Upload: out of memory\n");
 541         }
 542 }
 543
 544 static void R_Upload(gltexture_t *glt, qbyte *data)
 545 {
 546         int i, mip, width, height, depth, internalformat;
 547         qbyte *prevbuffer;
 548         prevbuffer = data;
 549
 550         glt->texnum = glt->image->texnum;
 551         qglBindTexture(GL_TEXTURE_2D, glt->image->texnum);
 552         CHECKGLERROR
 553         glt->flags &= ~GLTEXF_UPLOAD;
 554         gl_backend_rebindtextures = true;
 555
 556         if (glt->flags & TEXF_FRAGMENT)
 557         {
 558                 if (glt->image->flags & GLTEXF_UPLOAD)
 559                 {
 560                         glt->image->flags &= ~GLTEXF_UPLOAD;
 561                         Con_DPrintf("uploaded new fragments image\n");
 562                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 563                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 564                         switch(glt->image->texturetype)
 565                         {
 566                         case GLTEXTURETYPE_1D:
 567                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 568                                 CHECKGLERROR
 569                                 qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 570                                 CHECKGLERROR
 571                                 qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 572                                 CHECKGLERROR
 573                                 break;
 574                         case GLTEXTURETYPE_2D:
 575                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 576                                 CHECKGLERROR
 577                                 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 578                                 CHECKGLERROR
 579                                 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 580                                 CHECKGLERROR
 581                                 break;
 582                         case GLTEXTURETYPE_3D:
 583                                 qglTexImage3DEXT(GL_TEXTURE_3D_EXT, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 584                                 CHECKGLERROR
 585                                 qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 586                                 CHECKGLERROR
 587                                 qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 588                                 CHECKGLERROR
 589                                 break;
 590                         default:
 591                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 592                                 break;
 593                         }
 594                 }
 595
 596                 if (prevbuffer == NULL)
 597                 {
 598                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 599                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
 600                         prevbuffer = resizebuffer;
 601                 }
 602                 else if (glt->textype->textype == TEXTYPE_QPALETTE)
 603                 {
 604                         // promote paletted to RGBA, so we only have to worry about RGB and
 605                         // RGBA in the rest of this code
 606                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 607                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, d_8to24table);
 608                         prevbuffer = colorconvertbuffer;
 609                 }
 610
 611                 switch(glt->image->texturetype)
 612                 {
 613                 case GLTEXTURETYPE_1D:
 614                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 615                         CHECKGLERROR
 616                         break;
 617                 case GLTEXTURETYPE_2D:
 618                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 619                         CHECKGLERROR
 620                         break;
 621                 case GLTEXTURETYPE_3D:
 622                         qglTexSubImage3DEXT(GL_TEXTURE_3D_EXT, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 623                         CHECKGLERROR
 624                         break;
 625                 default:
 626                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 627                         break;
 628                 }
 629                 glt->texnum = glt->image->texnum;
 630                 return;
 631         }
 632
 633         glt->image->flags &= ~GLTEXF_UPLOAD;
 634
 635         // these are rounded up versions of the size to do better resampling
 636         for (width  = 1;width  < glt->width ;width  <<= 1);
 637         for (height = 1;height < glt->height;height <<= 1);
 638         for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 639
 640         R_MakeResizeBufferBigger(width * height * depth * glt->image->bytesperpixel);
 641
 642         if (prevbuffer == NULL)
 643         {
 644                 width = glt->image->width;
 645                 height = glt->image->height;
 646                 depth = glt->image->depth;
 647                 memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
 648                 prevbuffer = resizebuffer;
 649         }
 650         else
 651         {
 652                 if (glt->textype->textype == TEXTYPE_QPALETTE)
 653                 {
 654                         // promote paletted to RGBA, so we only have to worry about RGB and
 655                         // RGBA in the rest of this code
 656                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, d_8to24table);
 657                         prevbuffer = colorconvertbuffer;
 658                 }
 659
 660                 if (glt->width != width || glt->height != height || glt->depth != depth)
 661                 {
 662                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 663                         prevbuffer = resizebuffer;
 664                 }
 665
 666                 // apply picmip/max_size limitations
 667                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 668                 {
 669                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 670                         prevbuffer = resizebuffer;
 671                 }
 672         }
 673
 674         // 3 and 4 are converted by the driver to it's preferred format for the current display mode
 675         internalformat = 3;
 676         if (glt->flags & TEXF_ALPHA)
 677                 internalformat = 4;
 678
 679         mip = 0;
 680         switch(glt->image->texturetype)
 681         {
 682         case GLTEXTURETYPE_1D:
 683                 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 684                 CHECKGLERROR
 685                 if (glt->flags & TEXF_MIPMAP)
 686                 {
 687                         while (width > 1 || height > 1 || depth > 1)
 688                         {
 689                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 690                                 prevbuffer = resizebuffer;
 691                                 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 692                                 CHECKGLERROR
 693                         }
 694                         qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 695                         CHECKGLERROR
 696                         qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 697                         CHECKGLERROR
 698                 }
 699                 else
 700                 {
 701                         qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 702                         CHECKGLERROR
 703                         qglTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 704                         CHECKGLERROR
 705                 }
 706                 break;
 707         case GLTEXTURETYPE_2D:
 708                 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 709                 CHECKGLERROR
 710                 if (glt->flags & TEXF_MIPMAP)
 711                 {
 712                         while (width > 1 || height > 1 || depth > 1)
 713                         {
 714                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 715                                 prevbuffer = resizebuffer;
 716                                 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 717                                 CHECKGLERROR
 718                         }
 719                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 720                         CHECKGLERROR
 721                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 722                         CHECKGLERROR
 723                 }
 724                 else
 725                 {
 726                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 727                         CHECKGLERROR
 728                         qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 729                         CHECKGLERROR
 730                 }
 731                 break;
 732         case GLTEXTURETYPE_3D:
 733                 qglTexImage3DEXT(GL_TEXTURE_3D_EXT, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 734                 CHECKGLERROR
 735                 if (glt->flags & TEXF_MIPMAP)
 736                 {
 737                         while (width > 1 || height > 1 || depth > 1)
 738                         {
 739                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 740                                 prevbuffer = resizebuffer;
 741                                 qglTexImage3DEXT(GL_TEXTURE_3D_EXT, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 742                                 CHECKGLERROR
 743                         }
 744                         qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 745                         CHECKGLERROR
 746                         qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 747                         CHECKGLERROR
 748                 }
 749                 else
 750                 {
 751                         qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 752                         CHECKGLERROR
 753                         qglTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 754                         CHECKGLERROR
 755                 }
 756                 break;
 757         case GLTEXTURETYPE_CUBEMAP:
 758                 // convert and upload each side in turn,
 759                 // from a continuous block of input texels
 760                 texturebuffer = prevbuffer;
 761                 for (i = 0;i < 6;i++)
 762                 {
 763                         prevbuffer = texturebuffer;
 764                         texturebuffer += width * height * depth * glt->textype->inputbytesperpixel;
 765                         qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 766                         CHECKGLERROR
 767                         if (glt->flags & TEXF_MIPMAP)
 768                         {
 769                                 while (width > 1 || height > 1 || depth > 1)
 770                                 {
 771                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 772                                         prevbuffer = resizebuffer;
 773                                         qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 774                                         CHECKGLERROR
 775                                 }
 776                                 qglTexParameteri(cubemapside[i], GL_TEXTURE_MIN_FILTER, gl_filter_min);
 777                                 CHECKGLERROR
 778                                 qglTexParameteri(cubemapside[i], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 779                                 CHECKGLERROR
 780                         }
 781                         else
 782                         {
 783                                 qglTexParameteri(cubemapside[i], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 784                                 CHECKGLERROR
 785                                 qglTexParameteri(cubemapside[i], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 786                                 CHECKGLERROR
 787                         }
 788                 }
 789                 break;
 790         }
 791 }
 792
 793 static void R_FindImageForTexture(gltexture_t *glt)
 794 {
 795         int i, j, best, best2, x, y, z, w, h, d;
 796         textypeinfo_t *texinfo;
 797         gltexturepool_t *pool;
 798         gltextureimage_t *image, **imagechainpointer;
 799         texinfo = glt->textype;
 800         pool = glt->pool;
 801
 802         // remains -1 until uploaded
 803         glt->texnum = -1;
 804
 805         x = 0;
 806         y = 0;
 807         z = 0;
 808         w = glt->width;
 809         h = glt->height;
 810         d = glt->depth;
 811         if (glt->flags & TEXF_FRAGMENT)
 812         {
 813                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
 814                 {
 815                         image = *imagechainpointer;
 816                         if (image->type != GLIMAGETYPE_FRAGMENTS)
 817                                 continue;
 818                         if (image->texturetype != glt->texturetype)
 819                                 continue;
 820                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
 821                                 continue;
 822                         if (glt->width > image->width || glt->height > image->height)
 823                                 continue;
 824
 825                         // got a fragments texture, find a place in it if we can
 826                         for (best = image->width, i = 0;i < image->width - w;i++)
 827                         {
 828                                 for (best2 = 0, j = 0;j < w;j++)
 829                                 {
 830                                         if (image->blockallocation[i+j] >= best)
 831                                                 break;
 832                                         if (best2 < image->blockallocation[i+j])
 833                                                 best2 = image->blockallocation[i+j];
 834                                 }
 835                                 if (j == w)
 836                                 {
 837                                         // this is a valid spot
 838                                         x = i;
 839                                         y = best = best2;
 840                                 }
 841                         }
 842
 843                         if (best + h > image->height)
 844                                 continue;
 845
 846                         for (i = 0;i < w;i++)
 847                                 image->blockallocation[x + i] = best + h;
 848
 849                         glt->x = x;
 850                         glt->y = y;
 851                         glt->z = 0;
 852                         glt->image = image;
 853                         image->texturecount++;
 854                         return;
 855                 }
 856
 857                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 858                 if (image == NULL)
 859                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 860                 image->type = GLIMAGETYPE_FRAGMENTS;
 861                 // make sure the created image is big enough for the fragment
 862                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
 863                 for (image->height = block_size;image->height < glt->height;image->height <<= 1);
 864                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
 865                 memset(image->blockallocation, 0, image->width * sizeof(short));
 866
 867                 x = 0;
 868                 y = 0;
 869                 z = 0;
 870                 for (i = 0;i < w;i++)
 871                         image->blockallocation[x + i] = y + h;
 872         }
 873         else
 874         {
 875                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 876
 877                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 878                 if (image == NULL)
 879                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 880                 image->type = GLIMAGETYPE_TILE;
 881                 image->blockallocation = NULL;
 882
 883                 // calculate final size
 884                 if (r_max_size.integer > realmaxsize)
 885                         Cvar_SetValue("r_max_size", realmaxsize);
 886                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
 887                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
 888                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
 889                 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
 890                 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
 891                 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
 892                 if (image->width < 1) image->width = 1;
 893                 if (image->height < 1) image->height = 1;
 894                 if (image->depth < 1) image->depth = 1;
 895         }
 896         image->texturetype = glt->texturetype;
 897         image->glinternalformat = texinfo->glinternalformat;
 898         image->glformat = texinfo->glformat;
 899         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA)) | GLTEXF_UPLOAD;
 900         image->bytesperpixel = texinfo->internalbytesperpixel;
 901         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 902         // get a texture number to use
 903         qglGenTextures(1, &image->texnum);
 904         *imagechainpointer = image;
 905         image->texturecount++;
 906
 907         glt->x = x;
 908         glt->y = y;
 909         glt->y = z;
 910         glt->image = image;
 911 }
 912
 913 // note: R_FindImageForTexture must be called before this
 914 static void R_UploadTexture (gltexture_t *glt)
 915 {
 916         if (!(glt->flags & GLTEXF_UPLOAD))
 917                 return;
 918
 919         R_Upload(glt, glt->inputtexels);
 920         if (glt->inputtexels)
 921         {
 922                 Mem_Free(glt->inputtexels);
 923                 glt->inputtexels = NULL;
 924                 glt->flags |= GLTEXF_DESTROYED;
 925         }
 926         else if (glt->flags & GLTEXF_DESTROYED)
 927                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 928 }
 929
 930 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, qbyte *data)
 931 {
 932         int i, size;
 933         gltexture_t *glt;
 934         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 935         textypeinfo_t *texinfo;
 936
 937         if (cls.state == ca_dedicated)
 938                 return NULL;
 939
 940         if (texturetype == GLTEXTURETYPE_CUBEMAP)
 941         {
 942                 if (flags & TEXF_FRAGMENT)
 943                         Sys_Error("R_LoadTexture: fragment cubemap texture??\n");
 944                 if (!gl_texturecubemap)
 945                         Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
 946         }
 947         if (texturetype == GLTEXTURETYPE_3D)
 948                 if (!gl_texture3d)
 949                         Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
 950
 951         /*
 952         glt = R_FindTexture (pool, identifier);
 953         if (glt)
 954         {
 955                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
 956                 R_FreeTexture((rtexture_t *)glt);
 957         }
 958         */
 959
 960         texinfo = R_GetTexTypeInfo(textype, flags);
 961         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 962
 963         // clear the alpha flag if the texture has no transparent pixels
 964         switch(textype)
 965         {
 966         case TEXTYPE_QPALETTE:
 967                 if (flags & TEXF_ALPHA)
 968                 {
 969                         flags &= ~TEXF_ALPHA;
 970                         if (data)
 971                         {
 972                                 for (i = 0;i < size;i++)
 973                                 {
 974                                         if (data[i] == 255)
 975                                         {
 976                                                 flags |= TEXF_ALPHA;
 977                                                 break;
 978                                         }
 979                                 }
 980                         }
 981                 }
 982                 break;
 983         case TEXTYPE_RGB:
 984                 if (flags & TEXF_ALPHA)
 985                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
 986                 break;
 987         case TEXTYPE_RGBA:
 988                 if (flags & TEXF_ALPHA)
 989                 {
 990                         flags &= ~TEXF_ALPHA;
 991                         if (data)
 992                         {
 993                                 for (i = 3;i < size;i += 4)
 994                                 {
 995                                         if (data[i] < 255)
 996                                         {
 997                                                 flags |= TEXF_ALPHA;
 998                                                 break;
 999                                         }
1000                                 }
1001                         }
1002                 }
1003                 break;
1004         default:
1005                 Host_Error("R_LoadTexture: unknown texture type\n");
1006         }
1007
1008         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1009         if (identifier)
1010         {
1011                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1012                 strcpy (glt->identifier, identifier);
1013         }
1014         else
1015                 glt->identifier = NULL;
1016         glt->pool = pool;
1017         glt->chain = pool->gltchain;
1018         pool->gltchain = glt;
1019         glt->width = width;
1020         glt->height = height;
1021         glt->depth = depth;
1022         glt->flags = flags | GLTEXF_UPLOAD;
1023         glt->textype = texinfo;
1024         glt->texturetype = texturetype;
1025         glt->inputdatasize = size;
1026
1027         if (data)
1028         {
1029                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1030                 if (glt->inputtexels == NULL)
1031                         Sys_Error("R_SetupTexture: out of memory\n");
1032                 memcpy(glt->inputtexels, data, size);
1033         }
1034         else
1035                 glt->inputtexels = NULL;
1036
1037         R_FindImageForTexture(glt);
1038         R_PrecacheTexture(glt);
1039
1040         return (rtexture_t *)glt;
1041 }
1042
1043 rtexture_t *R_LoadTexture(rtexturepool_t *rtexturepool, char *identifier, int width, int height, qbyte *data, int textype, int flags)
1044 {
1045         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data);
1046 }
1047
1048 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, char *identifier, int width, qbyte *data, int textype, int flags)
1049 {
1050         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data);
1051 }
1052
1053 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, char *identifier, int width, int height, qbyte *data, int textype, int flags)
1054 {
1055         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data);
1056 }
1057
1058 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, char *identifier, int width, int height, int depth, qbyte *data, int textype, int flags)
1059 {
1060         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data);
1061 }
1062
1063 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, char *identifier, int width, qbyte *data, int textype, int flags)
1064 {
1065         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data);
1066 }
1067
1068 int R_TextureHasAlpha(rtexture_t *rt)
1069 {
1070         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1071 }
1072
1073 int R_TextureWidth(rtexture_t *rt)
1074 {
1075         return rt ? ((gltexture_t *)rt)->width : 0;
1076 }
1077
1078 int R_TextureHeight(rtexture_t *rt)
1079 {
1080         return rt ? ((gltexture_t *)rt)->height : 0;
1081 }
1082
1083 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1084 {
1085         gltexture_t *glt;
1086         float iwidth, iheight, idepth;
1087         if (cls.state == ca_dedicated)
1088         {
1089                 if (x)
1090                         *x = 0;
1091                 if (y)
1092                         *y = 0;
1093                 if (z)
1094                         *z = 0;
1095                 if (fx1 || fy1 || fx2 || fy2)
1096                 {
1097                         if (fx1)
1098                                 *fx1 = 0;
1099                         if (fy1)
1100                                 *fy1 = 0;
1101                         if (fz1)
1102                                 *fz1 = 0;
1103                         if (fx2)
1104                                 *fx2 = 1;
1105                         if (fy2)
1106                                 *fy2 = 1;
1107                         if (fz2)
1108                                 *fz2 = 1;
1109                 }
1110                 return;
1111         }
1112         if (!rt)
1113                 Host_Error("R_FragmentLocation: no texture supplied\n");
1114         glt = (gltexture_t *)rt;
1115         if (glt->flags & TEXF_FRAGMENT)
1116         {
1117                 if (x)
1118                         *x = glt->x;
1119                 if (y)
1120                         *y = glt->y;
1121                 if (fx1 || fy1 || fx2 || fy2)
1122                 {
1123                         iwidth = 1.0f / glt->image->width;
1124                         iheight = 1.0f / glt->image->height;
1125                         idepth = 1.0f / glt->image->depth;
1126                         if (fx1)
1127                                 *fx1 = glt->x * iwidth;
1128                         if (fy1)
1129                                 *fy1 = glt->y * iheight;
1130                         if (fz1)
1131                                 *fz1 = glt->z * idepth;
1132                         if (fx2)
1133                                 *fx2 = (glt->x + glt->width) * iwidth;
1134                         if (fy2)
1135                                 *fy2 = (glt->y + glt->height) * iheight;
1136                         if (fz2)
1137                                 *fz2 = (glt->z + glt->depth) * idepth;
1138                 }
1139         }
1140         else
1141         {
1142                 if (x)
1143                         *x = 0;
1144                 if (y)
1145                         *y = 0;
1146                 if (z)
1147                         *z = 0;
1148                 if (fx1 || fy1 || fx2 || fy2)
1149                 {
1150                         if (fx1)
1151                                 *fx1 = 0;
1152                         if (fy1)
1153                                 *fy1 = 0;
1154                         if (fz1)
1155                                 *fz1 = 0;
1156                         if (fx2)
1157                                 *fx2 = 1;
1158                         if (fy2)
1159                                 *fy2 = 1;
1160                         if (fz2)
1161                                 *fz2 = 1;
1162                 }
1163         }
1164 }
1165
1166 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1167 {
1168         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1169 }
1170
1171 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1172 {
1173         return width;
1174 }
1175
1176 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1177 {
1178         gltexture_t *glt;
1179         if (rt == NULL)
1180                 Host_Error("R_UpdateTexture: no texture supplied\n");
1181         if (data == NULL)
1182                 Host_Error("R_UpdateTexture: no data supplied\n");
1183         glt = (gltexture_t *)rt;
1184
1185         // if it has not been uploaded yet, update the data that will be used when it is
1186         if (glt->inputtexels)
1187                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1188         else
1189                 R_Upload(glt, data);
1190 }
1191