gl_textures.c

   1
   2 #include "quakedef.h"
   3 #include "image.h"
   4 #include "jpeg.h"
   5
   6 cvar_t  r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
   7 cvar_t  r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
   8 cvar_t  r_picmip = {CVAR_SAVE, "r_picmip", "0"};
   9 cvar_t  r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
  10 cvar_t  r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
  11 cvar_t  gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "0"};
  12
  13 int             gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
  14 int             gl_filter_mag = GL_LINEAR;
  15
  16
  17 static mempool_t *texturemempool;
  18 static mempool_t *texturedatamempool;
  19 static mempool_t *textureprocessingmempool;
  20
  21 // note: this must not conflict with TEXF_ flags in r_textures.h
  22 // cleared when a texture is uploaded
  23 #define GLTEXF_UPLOAD 0x00010000
  24 // bitmask for mismatch checking
  25 #define GLTEXF_IMPORTANTBITS (0)
  26 // set when image is uploaded and freed
  27 #define GLTEXF_DESTROYED 0x00040000
  28
  29 // size of images which hold fragment textures, ignores picmip and max_size
  30 static int block_size;
  31
  32 typedef struct
  33 {
  34         int textype;
  35         int inputbytesperpixel;
  36         int internalbytesperpixel;
  37         int glformat;
  38         int glinternalformat;
  39 }
  40 textypeinfo_t;
  41
  42 static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
  43 static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
  44 static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
  45 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
  46 static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
  47 static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
  48
  49 // a tiling texture (most common type)
  50 #define GLIMAGETYPE_TILE 0
  51 // a fragments texture (contains one or more fragment textures)
  52 #define GLIMAGETYPE_FRAGMENTS 1
  53
  54 #define GLTEXTURETYPE_1D 0
  55 #define GLTEXTURETYPE_2D 1
  56 #define GLTEXTURETYPE_3D 2
  57 #define GLTEXTURETYPE_CUBEMAP 3
  58
  59 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
  60 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
  61 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
  62 static int cubemapside[6] =
  63 {
  64         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  65         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  66         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  67         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  68         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  69         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  70 };
  71
  72 // a gltextureimage can have one (or more if fragments) gltextures inside
  73 typedef struct gltextureimage_s
  74 {
  75         struct gltextureimage_s *imagechain;
  76         int texturecount;
  77         int type; // one of the GLIMAGETYPE_ values
  78         int texturetype; // one of the GLTEXTURETYPE_ values
  79         int sides; // 1 or 6 depending on texturetype
  80         int texnum; // GL texture slot number
  81         int width, height, depth; // 3D texture support
  82         int bytesperpixel; // bytes per pixel
  83         int glformat; // GL_RGB or GL_RGBA
  84         int glinternalformat; // 3 or 4
  85         int flags;
  86         short *blockallocation; // fragment allocation (2D only)
  87 }
  88 gltextureimage_t;
  89
  90 typedef struct gltexture_s
  91 {
  92         // this field is exposed to the R_GetTexture macro, for speed reasons
  93         // (must be identical in rtexture_t)
  94         int texnum; // GL texture slot number
  95
  96         // pointer to texturepool (check this to see if the texture is allocated)
  97         struct gltexturepool_s *pool;
  98         // pointer to next texture in texturepool chain
  99         struct gltexture_s *chain;
 100         // pointer into gltextureimage array
 101         gltextureimage_t *image;
 102         // name of the texture (this might be removed someday), no duplicates
 103         char *identifier;
 104         // location in the image, and size
 105         int x, y, z, width, height, depth;
 106         // copy of the original texture(s) supplied to the upload function, for
 107         // delayed uploads (non-precached)
 108         qbyte *inputtexels;
 109         // original data size in *inputtexels
 110         int inputdatasize;
 111         // flags supplied to the LoadTexture function
 112         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 113         int flags;
 114         // pointer to one of the textype_ structs
 115         textypeinfo_t *textype;
 116         // one of the GLTEXTURETYPE_ values
 117         int texturetype;
 118         // palette if the texture is TEXTYPE_PALETTE
 119         const unsigned int *palette;
 120 }
 121 gltexture_t;
 122
 123 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 124
 125 typedef struct gltexturepool_s
 126 {
 127         unsigned int sentinel;
 128         struct gltextureimage_s *imagechain;
 129         struct gltexture_s *gltchain;
 130         struct gltexturepool_s *next;
 131 }
 132 gltexturepool_t;
 133
 134 static gltexturepool_t *gltexturepoolchain = NULL;
 135
 136 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
 137 static int resizebuffersize = 0;
 138 static qbyte *texturebuffer;
 139 static int texturebuffersize = 0;
 140
 141 static int realmaxsize = 0;
 142
 143 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 144 {
 145         if (flags & TEXF_ALPHA)
 146         {
 147                 switch(textype)
 148                 {
 149                 case TEXTYPE_PALETTE:
 150                         return &textype_palette_alpha;
 151                 case TEXTYPE_RGB:
 152                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
 153                         return NULL;
 154                 case TEXTYPE_RGBA:
 155                         return &textype_rgba_alpha;
 156                 default:
 157                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 158                         return NULL;
 159                 }
 160         }
 161         else
 162         {
 163                 switch(textype)
 164                 {
 165                 case TEXTYPE_PALETTE:
 166                         return &textype_palette;
 167                 case TEXTYPE_RGB:
 168                         return &textype_rgb;
 169                 case TEXTYPE_RGBA:
 170                         return &textype_rgba;
 171                 case TEXTYPE_DSDT:
 172                         return &textype_dsdt;
 173                 default:
 174                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 175                         return NULL;
 176                 }
 177         }
 178 }
 179
 180 static void R_UploadTexture(gltexture_t *t);
 181
 182 static void R_PrecacheTexture(gltexture_t *glt)
 183 {
 184         int precache;
 185         precache = false;
 186         if (glt->flags & TEXF_ALWAYSPRECACHE)
 187                 precache = true;
 188         else if (r_precachetextures.integer >= 2)
 189                 precache = true;
 190         else if (r_precachetextures.integer >= 1)
 191                 if (glt->flags & TEXF_PRECACHE)
 192                         precache = true;
 193
 194         if (precache)
 195                 R_UploadTexture(glt);
 196 }
 197
 198 int R_RealGetTexture(rtexture_t *rt)
 199 {
 200         if (rt)
 201         {
 202                 gltexture_t *glt;
 203                 glt = (gltexture_t *)rt;
 204                 if (glt->flags & GLTEXF_UPLOAD)
 205                         R_UploadTexture(glt);
 206                 glt->texnum = glt->image->texnum;
 207                 return glt->image->texnum;
 208         }
 209         else
 210                 return 0;
 211 }
 212
 213 void R_FreeTexture(rtexture_t *rt)
 214 {
 215         gltexture_t *glt, **gltpointer;
 216         gltextureimage_t *image, **gltimagepointer;
 217
 218         glt = (gltexture_t *)rt;
 219         if (glt == NULL)
 220                 Host_Error("R_FreeTexture: texture == NULL\n");
 221
 222         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 223         if (*gltpointer == glt)
 224                 *gltpointer = glt->chain;
 225         else
 226                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
 227
 228         // note: if freeing a fragment texture, this will not make the claimed
 229         // space available for new textures unless all other fragments in the
 230         // image are also freed
 231         if (glt->image)
 232         {
 233                 image = glt->image;
 234                 image->texturecount--;
 235                 if (image->texturecount < 1)
 236                 {
 237                         for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
 238                         if (*gltimagepointer == image)
 239                                 *gltimagepointer = image->imagechain;
 240                         else
 241                                 Host_Error("R_FreeTexture: image not linked in pool\n");
 242                         if (image->texnum)
 243                                 qglDeleteTextures(1, &image->texnum);
 244                         if (image->blockallocation)
 245                                 Mem_Free(image->blockallocation);
 246                         Mem_Free(image);
 247                 }
 248         }
 249
 250         if (glt->identifier)
 251                 Mem_Free(glt->identifier);
 252         if (glt->inputtexels)
 253                 Mem_Free(glt->inputtexels);
 254         Mem_Free(glt);
 255 }
 256
 257 /*
 258 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
 259 {
 260         gltexture_t     *glt;
 261
 262         if (!identifier)
 263                 return NULL;
 264
 265         for (glt = pool->gltchain;glt;glt = glt->chain)
 266                 if (glt->identifier && !strcmp (identifier, glt->identifier))
 267                         return glt;
 268
 269         return NULL;
 270 }
 271 */
 272
 273 rtexturepool_t *R_AllocTexturePool(void)
 274 {
 275         gltexturepool_t *pool;
 276         if (texturemempool == NULL)
 277                 return NULL;
 278         pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 279         if (pool == NULL)
 280                 return NULL;
 281         pool->next = gltexturepoolchain;
 282         gltexturepoolchain = pool;
 283         pool->sentinel = TEXTUREPOOL_SENTINEL;
 284         return (rtexturepool_t *)pool;
 285 }
 286
 287 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 288 {
 289         gltexturepool_t *pool, **poolpointer;
 290         if (rtexturepool == NULL)
 291                 return;
 292         if (*rtexturepool == NULL)
 293                 return;
 294         pool = (gltexturepool_t *)(*rtexturepool);
 295         *rtexturepool = NULL;
 296         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 297                 Host_Error("R_FreeTexturePool: pool already freed\n");
 298         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 299         if (*poolpointer == pool)
 300                 *poolpointer = pool->next;
 301         else
 302                 Host_Error("R_FreeTexturePool: pool not linked\n");
 303         while (pool->gltchain)
 304                 R_FreeTexture((rtexture_t *)pool->gltchain);
 305         if (pool->imagechain)
 306                 Sys_Error("R_FreeTexturePool: not all images freed\n");
 307         Mem_Free(pool);
 308 }
 309
 310
 311 typedef struct
 312 {
 313         char *name;
 314         int minification, magnification;
 315 }
 316 glmode_t;
 317
 318 static glmode_t modes[] =
 319 {
 320         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 321         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 322         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 323         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 324         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 325         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 326 };
 327
 328 static void GL_TextureMode_f (void)
 329 {
 330         int i;
 331         GLint oldbindtexnum;
 332         gltextureimage_t *image;
 333         gltexturepool_t *pool;
 334
 335         if (Cmd_Argc() == 1)
 336         {
 337                 for (i = 0;i < 6;i++)
 338                 {
 339                         if (gl_filter_min == modes[i].minification)
 340                         {
 341                                 Con_Printf("%s\n", modes[i].name);
 342                                 return;
 343                         }
 344                 }
 345                 Con_Print("current filter is unknown???\n");
 346                 return;
 347         }
 348
 349         for (i = 0;i < 6;i++)
 350                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 351                         break;
 352         if (i == 6)
 353         {
 354                 Con_Print("bad filter name\n");
 355                 return;
 356         }
 357
 358         gl_filter_min = modes[i].minification;
 359         gl_filter_mag = modes[i].magnification;
 360
 361         // change all the existing mipmap texture objects
 362         // FIXME: force renderer(/client/something?) restart instead?
 363         for (pool = gltexturepoolchain;pool;pool = pool->next)
 364         {
 365                 for (image = pool->imagechain;image;image = image->imagechain)
 366                 {
 367                         // only update already uploaded images
 368                         if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 369                         {
 370                                 qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
 371                                 qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
 372                                 if (image->flags & TEXF_MIPMAP)
 373                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
 374                                 else
 375                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 376                                 qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 377                                 qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
 378                         }
 379                 }
 380         }
 381 }
 382
 383 static int R_CalcTexelDataSize (gltexture_t *glt)
 384 {
 385         int width2, height2, depth2, size;
 386         if (glt->flags & TEXF_FRAGMENT)
 387                 size = glt->width * glt->height * glt->depth;
 388         else
 389         {
 390                 if (r_max_size.integer > realmaxsize)
 391                         Cvar_SetValue("r_max_size", realmaxsize);
 392                 // calculate final size
 393                 for (width2 = 1;width2 < glt->width;width2 <<= 1);
 394                 for (height2 = 1;height2 < glt->height;height2 <<= 1);
 395                 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
 396                 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
 397                 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
 398                 for (depth2 >>= r_picmip.integer;depth2 > r_max_size.integer;depth2 >>= 1);
 399                 if (width2 < 1) width2 = 1;
 400                 if (height2 < 1) height2 = 1;
 401                 if (depth2 < 1) depth2 = 1;
 402
 403                 size = 0;
 404                 if (glt->flags & TEXF_MIPMAP)
 405                 {
 406                         while (width2 > 1 || height2 > 1 || depth2 > 1)
 407                         {
 408                                 size += width2 * height2 * depth2;
 409                                 if (width2 > 1)
 410                                         width2 >>= 1;
 411                                 if (height2 > 1)
 412                                         height2 >>= 1;
 413                                 if (depth2 > 1)
 414                                         depth2 >>= 1;
 415                         }
 416                         size++; // count the last 1x1 mipmap
 417                 }
 418                 else
 419                         size = width2 * height2 * depth2;
 420         }
 421         size *= glt->textype->internalbytesperpixel * glt->image->sides;
 422
 423         return size;
 424 }
 425
 426 void R_TextureStats_PrintTotal(void)
 427 {
 428         int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
 429         gltexture_t *glt;
 430         gltexturepool_t *pool;
 431         for (pool = gltexturepoolchain;pool;pool = pool->next)
 432         {
 433                 for (glt = pool->gltchain;glt;glt = glt->chain)
 434                 {
 435                         glsize = R_CalcTexelDataSize(glt);
 436                         total++;
 437                         totalt += glsize;
 438                         totalp += glt->inputdatasize;
 439                         if (!(glt->flags & GLTEXF_UPLOAD))
 440                         {
 441                                 loaded++;
 442                                 loadedt += glsize;
 443                                 loadedp += glt->inputdatasize;
 444                         }
 445                 }
 446         }
 447         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);
 448 }
 449
 450 static void R_TextureStats_f(void)
 451 {
 452         int loaded;
 453         gltexture_t *glt;
 454         gltexturepool_t *pool;
 455         Con_Print("glsize input loaded mip alpha name\n");
 456         for (pool = gltexturepoolchain;pool;pool = pool->next)
 457         {
 458                 for (glt = pool->gltchain;glt;glt = glt->chain)
 459                 {
 460                         loaded = !(glt->flags & GLTEXF_UPLOAD);
 461                         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>");
 462                 }
 463                 Con_Printf("pool %10p\n", pool);
 464         }
 465         R_TextureStats_PrintTotal();
 466 }
 467
 468 char engineversion[40];
 469
 470 static void r_textures_start(void)
 471 {
 472         // deal with size limits of various drivers (3dfx in particular)
 473         qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
 474         CHECKGLERROR
 475         // LordHavoc: allow any alignment
 476         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 477         CHECKGLERROR
 478
 479         // use the largest scrap texture size we can (not sure if this is really a good idea)
 480         for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
 481
 482         texturemempool = Mem_AllocPool("Texture Info");
 483         texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
 484         textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
 485
 486         // Disable JPEG screenshots if the DLL isn't loaded
 487         if (! JPEG_OpenLibrary ())
 488                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 489 }
 490
 491 static void r_textures_shutdown(void)
 492 {
 493         rtexturepool_t *temp;
 494
 495         JPEG_CloseLibrary ();
 496
 497         while(gltexturepoolchain)
 498         {
 499                 temp = (rtexturepool_t *) gltexturepoolchain;
 500                 R_FreeTexturePool(&temp);
 501         }
 502
 503         resizebuffersize = 0;
 504         texturebuffersize = 0;
 505         resizebuffer = NULL;
 506         colorconvertbuffer = NULL;
 507         texturebuffer = NULL;
 508         Mem_FreePool(&texturemempool);
 509         Mem_FreePool(&texturedatamempool);
 510         Mem_FreePool(&textureprocessingmempool);
 511 }
 512
 513 static void r_textures_newmap(void)
 514 {
 515 }
 516
 517 void R_Textures_Init (void)
 518 {
 519         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
 520         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
 521         Cvar_RegisterVariable (&r_max_scrapsize);
 522         Cvar_RegisterVariable (&r_max_size);
 523         Cvar_RegisterVariable (&r_picmip);
 524         Cvar_RegisterVariable (&r_lerpimages);
 525         Cvar_RegisterVariable (&r_precachetextures);
 526         Cvar_RegisterVariable (&gl_texture_anisotropy);
 527
 528         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 529 }
 530
 531 void R_Textures_Frame (void)
 532 {
 533         // could do procedural texture animation here, if we keep track of which
 534         // textures were accessed this frame...
 535
 536         // free the resize buffers
 537         resizebuffersize = 0;
 538         if (resizebuffer)
 539         {
 540                 Mem_Free(resizebuffer);
 541                 resizebuffer = NULL;
 542         }
 543         if (colorconvertbuffer)
 544         {
 545                 Mem_Free(colorconvertbuffer);
 546                 colorconvertbuffer = NULL;
 547         }
 548 }
 549
 550 void R_MakeResizeBufferBigger(int size)
 551 {
 552         if (resizebuffersize < size)
 553         {
 554                 resizebuffersize = size;
 555                 if (resizebuffer)
 556                         Mem_Free(resizebuffer);
 557                 if (colorconvertbuffer)
 558                         Mem_Free(colorconvertbuffer);
 559                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 560                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 561                 if (!resizebuffer || !colorconvertbuffer)
 562                         Host_Error("R_Upload: out of memory\n");
 563         }
 564 }
 565
 566 static void GL_SetupTextureParameters(int flags, int texturetype)
 567 {
 568         int textureenum = gltexturetypeenums[texturetype];
 569         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 570
 571         CHECKGLERROR
 572
 573         if (gl_support_anisotropy)
 574                 qglTexParameterf(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_anisotropy.value);
 575         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
 576         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
 577         if (gltexturetypedimensions[texturetype] >= 3)
 578                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
 579
 580         if (flags & TEXF_FORCENEAREST)
 581         {
 582                 if (flags & TEXF_MIPMAP)
 583                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
 584                 else
 585                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 586                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 587         }
 588         else if (flags & TEXF_FORCELINEAR)
 589         {
 590                 if (flags & TEXF_MIPMAP)
 591                 {
 592                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 593                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
 594                         else
 595                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
 596                 }
 597                 else
 598                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 599                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 600         }
 601         else
 602         {
 603                 if (flags & TEXF_MIPMAP)
 604                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 605                 else
 606                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 607                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 608         }
 609
 610         CHECKGLERROR
 611 }
 612
 613 static void R_Upload(gltexture_t *glt, qbyte *data)
 614 {
 615         int i, mip, width, height, depth;
 616         GLint oldbindtexnum;
 617         qbyte *prevbuffer;
 618         prevbuffer = data;
 619
 620         CHECKGLERROR
 621
 622         glt->texnum = glt->image->texnum;
 623         // we need to restore the texture binding after finishing the upload
 624         qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
 625         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
 626         CHECKGLERROR
 627         glt->flags &= ~GLTEXF_UPLOAD;
 628
 629         if (glt->flags & TEXF_FRAGMENT)
 630         {
 631                 if (glt->image->flags & GLTEXF_UPLOAD)
 632                 {
 633                         glt->image->flags &= ~GLTEXF_UPLOAD;
 634                         Con_DPrint("uploaded new fragments image\n");
 635                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 636                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 637                         switch(glt->image->texturetype)
 638                         {
 639                         case GLTEXTURETYPE_1D:
 640                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 641                                 CHECKGLERROR
 642                                 break;
 643                         case GLTEXTURETYPE_2D:
 644                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 645                                 CHECKGLERROR
 646                                 break;
 647                         case GLTEXTURETYPE_3D:
 648                                 qglTexImage3D(GL_TEXTURE_3D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 649                                 CHECKGLERROR
 650                                 break;
 651                         default:
 652                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 653                                 break;
 654                         }
 655                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 656                 }
 657
 658                 if (prevbuffer == NULL)
 659                 {
 660                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 661                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
 662                         prevbuffer = resizebuffer;
 663                 }
 664                 else if (glt->textype->textype == TEXTYPE_PALETTE)
 665                 {
 666                         // promote paletted to RGBA, so we only have to worry about RGB and
 667                         // RGBA in the rest of this code
 668                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
 669                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
 670                         prevbuffer = colorconvertbuffer;
 671                 }
 672
 673                 switch(glt->image->texturetype)
 674                 {
 675                 case GLTEXTURETYPE_1D:
 676                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 677                         CHECKGLERROR
 678                         break;
 679                 case GLTEXTURETYPE_2D:
 680                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 681                         CHECKGLERROR
 682                         break;
 683                 case GLTEXTURETYPE_3D:
 684                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 685                         CHECKGLERROR
 686                         break;
 687                 default:
 688                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 689                         break;
 690                 }
 691         }
 692         else
 693         {
 694                 glt->image->flags &= ~GLTEXF_UPLOAD;
 695
 696                 // these are rounded up versions of the size to do better resampling
 697                 for (width  = 1;width  < glt->width ;width  <<= 1);
 698                 for (height = 1;height < glt->height;height <<= 1);
 699                 for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 700
 701                 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
 702
 703                 if (prevbuffer == NULL)
 704                 {
 705                         width = glt->image->width;
 706                         height = glt->image->height;
 707                         depth = glt->image->depth;
 708                         memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
 709                         prevbuffer = resizebuffer;
 710                 }
 711                 else
 712                 {
 713                         if (glt->textype->textype == TEXTYPE_PALETTE)
 714                         {
 715                                 // promote paletted to RGBA, so we only have to worry about RGB and
 716                                 // RGBA in the rest of this code
 717                                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
 718                                 prevbuffer = colorconvertbuffer;
 719                         }
 720                 }
 721
 722                 // cubemaps contain multiple images and thus get processed a bit differently
 723                 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
 724                 {
 725                         if (glt->width != width || glt->height != height || glt->depth != depth)
 726                         {
 727                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 728                                 prevbuffer = resizebuffer;
 729                         }
 730                         // picmip/max_size
 731                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 732                         {
 733                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 734                                 prevbuffer = resizebuffer;
 735                         }
 736                 }
 737                 mip = 0;
 738                 switch(glt->image->texturetype)
 739                 {
 740                 case GLTEXTURETYPE_1D:
 741                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 742                         CHECKGLERROR
 743                         if (glt->flags & TEXF_MIPMAP)
 744                         {
 745                                 while (width > 1 || height > 1 || depth > 1)
 746                                 {
 747                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 748                                         prevbuffer = resizebuffer;
 749                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 750                                         CHECKGLERROR
 751                                 }
 752                         }
 753                         break;
 754                 case GLTEXTURETYPE_2D:
 755                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 756                         CHECKGLERROR
 757                         if (glt->flags & TEXF_MIPMAP)
 758                         {
 759                                 while (width > 1 || height > 1 || depth > 1)
 760                                 {
 761                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 762                                         prevbuffer = resizebuffer;
 763                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 764                                         CHECKGLERROR
 765                                 }
 766                         }
 767                         break;
 768                 case GLTEXTURETYPE_3D:
 769                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 770                         CHECKGLERROR
 771                         if (glt->flags & TEXF_MIPMAP)
 772                         {
 773                                 while (width > 1 || height > 1 || depth > 1)
 774                                 {
 775                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 776                                         prevbuffer = resizebuffer;
 777                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 778                                         CHECKGLERROR
 779                                 }
 780                         }
 781                         break;
 782                 case GLTEXTURETYPE_CUBEMAP:
 783                         // convert and upload each side in turn,
 784                         // from a continuous block of input texels
 785                         texturebuffer = prevbuffer;
 786                         for (i = 0;i < 6;i++)
 787                         {
 788                                 prevbuffer = texturebuffer;
 789                                 texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
 790                                 if (glt->width != width || glt->height != height || glt->depth != depth)
 791                                 {
 792                                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 793                                         prevbuffer = resizebuffer;
 794                                 }
 795                                 // picmip/max_size
 796                                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 797                                 {
 798                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 799                                         prevbuffer = resizebuffer;
 800                                 }
 801                                 mip = 0;
 802                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 803                                 CHECKGLERROR
 804                                 if (glt->flags & TEXF_MIPMAP)
 805                                 {
 806                                         while (width > 1 || height > 1 || depth > 1)
 807                                         {
 808                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 809                                                 prevbuffer = resizebuffer;
 810                                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 811                                                 CHECKGLERROR
 812                                         }
 813                                 }
 814                         }
 815                         break;
 816                 }
 817                 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 818         }
 819         qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
 820 }
 821
 822 static void R_FindImageForTexture(gltexture_t *glt)
 823 {
 824         int i, j, best, best2, x, y, z, w, h, d;
 825         textypeinfo_t *texinfo;
 826         gltexturepool_t *pool;
 827         gltextureimage_t *image, **imagechainpointer;
 828         texinfo = glt->textype;
 829         pool = glt->pool;
 830
 831         // remains -1 until uploaded
 832         glt->texnum = -1;
 833
 834         x = 0;
 835         y = 0;
 836         z = 0;
 837         w = glt->width;
 838         h = glt->height;
 839         d = glt->depth;
 840         if (glt->flags & TEXF_FRAGMENT)
 841         {
 842                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
 843                 {
 844                         image = *imagechainpointer;
 845                         if (image->type != GLIMAGETYPE_FRAGMENTS)
 846                                 continue;
 847                         if (image->texturetype != glt->texturetype)
 848                                 continue;
 849                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
 850                                 continue;
 851                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
 852                                 continue;
 853                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
 854                                 continue;
 855
 856                         // got a fragments texture, find a place in it if we can
 857                         for (best = image->width, i = 0;i < image->width - w;i++)
 858                         {
 859                                 for (best2 = 0, j = 0;j < w;j++)
 860                                 {
 861                                         if (image->blockallocation[i+j] >= best)
 862                                                 break;
 863                                         if (best2 < image->blockallocation[i+j])
 864                                                 best2 = image->blockallocation[i+j];
 865                                 }
 866                                 if (j == w)
 867                                 {
 868                                         // this is a valid spot
 869                                         x = i;
 870                                         y = best = best2;
 871                                 }
 872                         }
 873
 874                         if (best + h > image->height)
 875                                 continue;
 876
 877                         for (i = 0;i < w;i++)
 878                                 image->blockallocation[x + i] = best + h;
 879
 880                         glt->x = x;
 881                         glt->y = y;
 882                         glt->z = 0;
 883                         glt->image = image;
 884                         image->texturecount++;
 885                         return;
 886                 }
 887
 888                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 889                 if (image == NULL)
 890                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 891                 image->type = GLIMAGETYPE_FRAGMENTS;
 892                 // make sure the created image is big enough for the fragment
 893                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
 894                 image->height = 1;
 895                 if (gltexturetypedimensions[glt->texturetype] >= 2)
 896                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
 897                 image->depth = 1;
 898                 if (gltexturetypedimensions[glt->texturetype] >= 3)
 899                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
 900                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
 901                 memset(image->blockallocation, 0, image->width * sizeof(short));
 902
 903                 x = 0;
 904                 y = 0;
 905                 z = 0;
 906                 for (i = 0;i < w;i++)
 907                         image->blockallocation[x + i] = y + h;
 908         }
 909         else
 910         {
 911                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 912
 913                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 914                 if (image == NULL)
 915                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 916                 image->type = GLIMAGETYPE_TILE;
 917                 image->blockallocation = NULL;
 918
 919                 // calculate final size
 920                 if (r_max_size.integer > realmaxsize)
 921                         Cvar_SetValue("r_max_size", realmaxsize);
 922                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
 923                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
 924                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
 925                 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
 926                 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
 927                 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
 928                 if (image->width < 1) image->width = 1;
 929                 if (image->height < 1) image->height = 1;
 930                 if (image->depth < 1) image->depth = 1;
 931         }
 932         image->texturetype = glt->texturetype;
 933         image->glinternalformat = texinfo->glinternalformat;
 934         image->glformat = texinfo->glformat;
 935         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
 936         image->bytesperpixel = texinfo->internalbytesperpixel;
 937         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 938         // get a texture number to use
 939         qglGenTextures(1, &image->texnum);
 940         *imagechainpointer = image;
 941         image->texturecount++;
 942
 943         glt->x = x;
 944         glt->y = y;
 945         glt->y = z;
 946         glt->image = image;
 947 }
 948
 949 // note: R_FindImageForTexture must be called before this
 950 static void R_UploadTexture (gltexture_t *glt)
 951 {
 952         if (!(glt->flags & GLTEXF_UPLOAD))
 953                 return;
 954
 955         R_Upload(glt, glt->inputtexels);
 956         if (glt->inputtexels)
 957         {
 958                 Mem_Free(glt->inputtexels);
 959                 glt->inputtexels = NULL;
 960                 glt->flags |= GLTEXF_DESTROYED;
 961         }
 962         else if (glt->flags & GLTEXF_DESTROYED)
 963                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 964 }
 965
 966 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const qbyte *data, const unsigned int *palette)
 967 {
 968         int i, size;
 969         gltexture_t *glt;
 970         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 971         textypeinfo_t *texinfo;
 972
 973         if (cls.state == ca_dedicated)
 974                 return NULL;
 975
 976         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
 977                 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
 978         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 979                 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
 980         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 981                 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
 982
 983         /*
 984         glt = R_FindTexture (pool, identifier);
 985         if (glt)
 986         {
 987                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
 988                 R_FreeTexture((rtexture_t *)glt);
 989         }
 990         */
 991
 992         texinfo = R_GetTexTypeInfo(textype, flags);
 993         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 994         if (size < 1)
 995                 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
 996
 997         // clear the alpha flag if the texture has no transparent pixels
 998         switch(textype)
 999         {
1000         case TEXTYPE_PALETTE:
1001                 if (flags & TEXF_ALPHA)
1002                 {
1003                         flags &= ~TEXF_ALPHA;
1004                         if (data)
1005                         {
1006                                 for (i = 0;i < size;i++)
1007                                 {
1008                                         if (((qbyte *)&palette[data[i]])[3] < 255)
1009                                         {
1010                                                 flags |= TEXF_ALPHA;
1011                                                 break;
1012                                         }
1013                                 }
1014                         }
1015                 }
1016                 break;
1017         case TEXTYPE_RGB:
1018                 if (flags & TEXF_ALPHA)
1019                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1020                 break;
1021         case TEXTYPE_RGBA:
1022                 if (flags & TEXF_ALPHA)
1023                 {
1024                         flags &= ~TEXF_ALPHA;
1025                         if (data)
1026                         {
1027                                 for (i = 3;i < size;i += 4)
1028                                 {
1029                                         if (data[i] < 255)
1030                                         {
1031                                                 flags |= TEXF_ALPHA;
1032                                                 break;
1033                                         }
1034                                 }
1035                         }
1036                 }
1037                 break;
1038         case TEXTYPE_DSDT:
1039                 break;
1040         default:
1041                 Host_Error("R_LoadTexture: unknown texture type\n");
1042         }
1043
1044         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1045         if (identifier)
1046         {
1047                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1048                 strcpy (glt->identifier, identifier);
1049         }
1050         else
1051                 glt->identifier = NULL;
1052         glt->pool = pool;
1053         glt->chain = pool->gltchain;
1054         pool->gltchain = glt;
1055         glt->width = width;
1056         glt->height = height;
1057         glt->depth = depth;
1058         glt->flags = flags | GLTEXF_UPLOAD;
1059         glt->textype = texinfo;
1060         glt->texturetype = texturetype;
1061         glt->inputdatasize = size;
1062         glt->palette = palette;
1063
1064         if (data)
1065         {
1066                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1067                 if (glt->inputtexels == NULL)
1068                         Sys_Error("R_LoadTexture: out of memory\n");
1069                 memcpy(glt->inputtexels, data, size);
1070         }
1071         else
1072                 glt->inputtexels = NULL;
1073
1074         R_FindImageForTexture(glt);
1075         R_PrecacheTexture(glt);
1076
1077         return (rtexture_t *)glt;
1078 }
1079
1080 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1081 {
1082         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1083 }
1084
1085 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette)
1086 {
1087         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1088 }
1089
1090 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette)
1091 {
1092         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1093 }
1094
1095 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1096 {
1097         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1098 }
1099
1100 int R_TextureHasAlpha(rtexture_t *rt)
1101 {
1102         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1103 }
1104
1105 int R_TextureWidth(rtexture_t *rt)
1106 {
1107         return rt ? ((gltexture_t *)rt)->width : 0;
1108 }
1109
1110 int R_TextureHeight(rtexture_t *rt)
1111 {
1112         return rt ? ((gltexture_t *)rt)->height : 0;
1113 }
1114
1115 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1116 {
1117         gltexture_t *glt;
1118         float iwidth, iheight, idepth;
1119         if (cls.state == ca_dedicated)
1120         {
1121                 if (x)
1122                         *x = 0;
1123                 if (y)
1124                         *y = 0;
1125                 if (z)
1126                         *z = 0;
1127                 if (fx1 || fy1 || fx2 || fy2)
1128                 {
1129                         if (fx1)
1130                                 *fx1 = 0;
1131                         if (fy1)
1132                                 *fy1 = 0;
1133                         if (fz1)
1134                                 *fz1 = 0;
1135                         if (fx2)
1136                                 *fx2 = 1;
1137                         if (fy2)
1138                                 *fy2 = 1;
1139                         if (fz2)
1140                                 *fz2 = 1;
1141                 }
1142                 return;
1143         }
1144         if (!rt)
1145                 Host_Error("R_FragmentLocation: no texture supplied\n");
1146         glt = (gltexture_t *)rt;
1147         if (glt->flags & TEXF_FRAGMENT)
1148         {
1149                 if (x)
1150                         *x = glt->x;
1151                 if (y)
1152                         *y = glt->y;
1153                 if (fx1 || fy1 || fx2 || fy2)
1154                 {
1155                         iwidth = 1.0f / glt->image->width;
1156                         iheight = 1.0f / glt->image->height;
1157                         idepth = 1.0f / glt->image->depth;
1158                         if (fx1)
1159                                 *fx1 = glt->x * iwidth;
1160                         if (fy1)
1161                                 *fy1 = glt->y * iheight;
1162                         if (fz1)
1163                                 *fz1 = glt->z * idepth;
1164                         if (fx2)
1165                                 *fx2 = (glt->x + glt->width) * iwidth;
1166                         if (fy2)
1167                                 *fy2 = (glt->y + glt->height) * iheight;
1168                         if (fz2)
1169                                 *fz2 = (glt->z + glt->depth) * idepth;
1170                 }
1171         }
1172         else
1173         {
1174                 if (x)
1175                         *x = 0;
1176                 if (y)
1177                         *y = 0;
1178                 if (z)
1179                         *z = 0;
1180                 if (fx1 || fy1 || fx2 || fy2)
1181                 {
1182                         if (fx1)
1183                                 *fx1 = 0;
1184                         if (fy1)
1185                                 *fy1 = 0;
1186                         if (fz1)
1187                                 *fz1 = 0;
1188                         if (fx2)
1189                                 *fx2 = 1;
1190                         if (fy2)
1191                                 *fy2 = 1;
1192                         if (fz2)
1193                                 *fz2 = 1;
1194                 }
1195         }
1196 }
1197
1198 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1199 {
1200         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1201 }
1202
1203 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1204 {
1205         return width;
1206 }
1207
1208 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1209 {
1210         gltexture_t *glt;
1211         if (rt == NULL)
1212                 Host_Error("R_UpdateTexture: no texture supplied\n");
1213         if (data == NULL)
1214                 Host_Error("R_UpdateTexture: no data supplied\n");
1215         glt = (gltexture_t *)rt;
1216
1217         // if it has not been uploaded yet, update the data that will be used when it is
1218         if (glt->inputtexels)
1219                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1220         else
1221                 R_Upload(glt, data);
1222 }
1223