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