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         JPEG_OpenLibrary ();
 482 }
 483
 484 static void r_textures_shutdown(void)
 485 {
 486         rtexturepool_t *temp;
 487
 488         JPEG_CloseLibrary ();
 489
 490         while(gltexturepoolchain)
 491         {
 492                 temp = (rtexturepool_t *) gltexturepoolchain;
 493                 R_FreeTexturePool(&temp);
 494         }
 495
 496         resizebuffersize = 0;
 497         texturebuffersize = 0;
 498         resizebuffer = NULL;
 499         colorconvertbuffer = NULL;
 500         texturebuffer = NULL;
 501         Mem_FreePool(&texturemempool);
 502         Mem_FreePool(&texturedatamempool);
 503         Mem_FreePool(&textureprocessingmempool);
 504 }
 505
 506 static void r_textures_newmap(void)
 507 {
 508 }
 509
 510 void R_Textures_Init (void)
 511 {
 512         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
 513         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
 514         Cvar_RegisterVariable (&r_max_scrapsize);
 515         Cvar_RegisterVariable (&r_max_size);
 516         Cvar_RegisterVariable (&r_picmip);
 517         Cvar_RegisterVariable (&r_lerpimages);
 518         Cvar_RegisterVariable (&r_precachetextures);
 519
 520         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 521 }
 522
 523 void R_Textures_Frame (void)
 524 {
 525         // could do procedural texture animation here, if we keep track of which
 526         // textures were accessed this frame...
 527
 528         // free the resize buffers
 529         resizebuffersize = 0;
 530         if (resizebuffer)
 531         {
 532                 Mem_Free(resizebuffer);
 533                 resizebuffer = NULL;
 534         }
 535         if (colorconvertbuffer)
 536         {
 537                 Mem_Free(colorconvertbuffer);
 538                 colorconvertbuffer = NULL;
 539         }
 540 }
 541
 542 void R_MakeResizeBufferBigger(int size)
 543 {
 544         if (resizebuffersize < size)
 545         {
 546                 resizebuffersize = size;
 547                 if (resizebuffer)
 548                         Mem_Free(resizebuffer);
 549                 if (colorconvertbuffer)
 550                         Mem_Free(colorconvertbuffer);
 551                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 552                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 553                 if (!resizebuffer || !colorconvertbuffer)
 554                         Host_Error("R_Upload: out of memory\n");
 555         }
 556 }
 557
 558 static void GL_SetupTextureParameters(int flags, int texturetype)
 559 {
 560         int textureenum = gltexturetypeenums[texturetype];
 561         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 562
 563         CHECKGLERROR
 564
 565         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
 566         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
 567         if (gltexturetypedimensions[texturetype] >= 3)
 568                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
 569
 570         if (flags & TEXF_FORCENEAREST)
 571         {
 572                 if (flags & TEXF_MIPMAP)
 573                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
 574                 else
 575                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 576                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 577         }
 578         else if (flags & TEXF_FORCELINEAR)
 579         {
 580                 if (flags & TEXF_MIPMAP)
 581                 {
 582                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 583                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
 584                         else
 585                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
 586                 }
 587                 else
 588                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 589                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 590         }
 591         else
 592         {
 593                 if (flags & TEXF_MIPMAP)
 594                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
 595                 else
 596                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 597                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 598         }
 599
 600         CHECKGLERROR
 601 }
 602
 603 static void R_Upload(gltexture_t *glt, qbyte *data)
 604 {
 605         int i, mip, width, height, depth, internalformat;
 606         qbyte *prevbuffer;
 607         prevbuffer = data;
 608
 609         CHECKGLERROR
 610
 611         glt->texnum = glt->image->texnum;
 612         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
 613         CHECKGLERROR
 614         glt->flags &= ~GLTEXF_UPLOAD;
 615         gl_backend_rebindtextures = true;
 616
 617         if (glt->flags & TEXF_FRAGMENT)
 618         {
 619                 if (glt->image->flags & GLTEXF_UPLOAD)
 620                 {
 621                         glt->image->flags &= ~GLTEXF_UPLOAD;
 622                         Con_DPrintf("uploaded new fragments image\n");
 623                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 624                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 625                         switch(glt->image->texturetype)
 626                         {
 627                         case GLTEXTURETYPE_1D:
 628                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 629                                 CHECKGLERROR
 630                                 break;
 631                         case GLTEXTURETYPE_2D:
 632                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 633                                 CHECKGLERROR
 634                                 break;
 635                         case GLTEXTURETYPE_3D:
 636                                 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);
 637                                 CHECKGLERROR
 638                                 break;
 639                         default:
 640                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 641                                 break;
 642                         }
 643                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 644                 }
 645
 646                 if (prevbuffer == NULL)
 647                 {
 648                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 649                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
 650                         prevbuffer = resizebuffer;
 651                 }
 652                 else if (glt->textype->textype == TEXTYPE_PALETTE)
 653                 {
 654                         // promote paletted to RGBA, so we only have to worry about RGB and
 655                         // RGBA in the rest of this code
 656                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
 657                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
 658                         prevbuffer = colorconvertbuffer;
 659                 }
 660
 661                 switch(glt->image->texturetype)
 662                 {
 663                 case GLTEXTURETYPE_1D:
 664                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 665                         CHECKGLERROR
 666                         break;
 667                 case GLTEXTURETYPE_2D:
 668                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 669                         CHECKGLERROR
 670                         break;
 671                 case GLTEXTURETYPE_3D:
 672                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 673                         CHECKGLERROR
 674                         break;
 675                 default:
 676                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 677                         break;
 678                 }
 679                 glt->texnum = glt->image->texnum;
 680                 return;
 681         }
 682
 683         glt->image->flags &= ~GLTEXF_UPLOAD;
 684
 685         // these are rounded up versions of the size to do better resampling
 686         for (width  = 1;width  < glt->width ;width  <<= 1);
 687         for (height = 1;height < glt->height;height <<= 1);
 688         for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 689
 690         R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
 691
 692         if (prevbuffer == NULL)
 693         {
 694                 width = glt->image->width;
 695                 height = glt->image->height;
 696                 depth = glt->image->depth;
 697                 memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
 698                 prevbuffer = resizebuffer;
 699         }
 700         else
 701         {
 702                 if (glt->textype->textype == TEXTYPE_PALETTE)
 703                 {
 704                         // promote paletted to RGBA, so we only have to worry about RGB and
 705                         // RGBA in the rest of this code
 706                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
 707                         prevbuffer = colorconvertbuffer;
 708                 }
 709         }
 710
 711         // 3 and 4 are converted by the driver to it's preferred format for the current display mode
 712         internalformat = 3;
 713         if (glt->flags & TEXF_ALPHA)
 714                 internalformat = 4;
 715
 716         // cubemaps contain multiple images and thus get processed a bit differently
 717         if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
 718         {
 719                 if (glt->width != width || glt->height != height || glt->depth != depth)
 720                 {
 721                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 722                         prevbuffer = resizebuffer;
 723                 }
 724                 // picmip/max_size
 725                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 726                 {
 727                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 728                         prevbuffer = resizebuffer;
 729                 }
 730         }
 731         mip = 0;
 732         switch(glt->image->texturetype)
 733         {
 734         case GLTEXTURETYPE_1D:
 735                 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 736                 CHECKGLERROR
 737                 if (glt->flags & TEXF_MIPMAP)
 738                 {
 739                         while (width > 1 || height > 1 || depth > 1)
 740                         {
 741                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 742                                 prevbuffer = resizebuffer;
 743                                 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 744                                 CHECKGLERROR
 745                         }
 746                 }
 747                 break;
 748         case GLTEXTURETYPE_2D:
 749                 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 750                 CHECKGLERROR
 751                 if (glt->flags & TEXF_MIPMAP)
 752                 {
 753                         while (width > 1 || height > 1 || depth > 1)
 754                         {
 755                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 756                                 prevbuffer = resizebuffer;
 757                                 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 758                                 CHECKGLERROR
 759                         }
 760                 }
 761                 break;
 762         case GLTEXTURETYPE_3D:
 763                 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 764                 CHECKGLERROR
 765                 if (glt->flags & TEXF_MIPMAP)
 766                 {
 767                         while (width > 1 || height > 1 || depth > 1)
 768                         {
 769                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 770                                 prevbuffer = resizebuffer;
 771                                 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 772                                 CHECKGLERROR
 773                         }
 774                 }
 775                 break;
 776         case GLTEXTURETYPE_CUBEMAP:
 777                 // convert and upload each side in turn,
 778                 // from a continuous block of input texels
 779                 texturebuffer = prevbuffer;
 780                 for (i = 0;i < 6;i++)
 781                 {
 782                         prevbuffer = texturebuffer;
 783                         texturebuffer += width * height * depth * glt->textype->inputbytesperpixel;
 784                         if (glt->width != width || glt->height != height || glt->depth != depth)
 785                         {
 786                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 787                                 prevbuffer = resizebuffer;
 788                         }
 789                         // picmip/max_size
 790                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 791                         {
 792                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 793                                 prevbuffer = resizebuffer;
 794                         }
 795                         mip = 0;
 796                         qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 797                         CHECKGLERROR
 798                         if (glt->flags & TEXF_MIPMAP)
 799                         {
 800                                 while (width > 1 || height > 1 || depth > 1)
 801                                 {
 802                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 803                                         prevbuffer = resizebuffer;
 804                                         qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 805                                         CHECKGLERROR
 806                                 }
 807                         }
 808                 }
 809                 break;
 810         }
 811         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 812 }
 813
 814 static void R_FindImageForTexture(gltexture_t *glt)
 815 {
 816         int i, j, best, best2, x, y, z, w, h, d;
 817         textypeinfo_t *texinfo;
 818         gltexturepool_t *pool;
 819         gltextureimage_t *image, **imagechainpointer;
 820         texinfo = glt->textype;
 821         pool = glt->pool;
 822
 823         // remains -1 until uploaded
 824         glt->texnum = -1;
 825
 826         x = 0;
 827         y = 0;
 828         z = 0;
 829         w = glt->width;
 830         h = glt->height;
 831         d = glt->depth;
 832         if (glt->flags & TEXF_FRAGMENT)
 833         {
 834                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
 835                 {
 836                         image = *imagechainpointer;
 837                         if (image->type != GLIMAGETYPE_FRAGMENTS)
 838                                 continue;
 839                         if (image->texturetype != glt->texturetype)
 840                                 continue;
 841                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
 842                                 continue;
 843                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
 844                                 continue;
 845                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
 846                                 continue;
 847
 848                         // got a fragments texture, find a place in it if we can
 849                         for (best = image->width, i = 0;i < image->width - w;i++)
 850                         {
 851                                 for (best2 = 0, j = 0;j < w;j++)
 852                                 {
 853                                         if (image->blockallocation[i+j] >= best)
 854                                                 break;
 855                                         if (best2 < image->blockallocation[i+j])
 856                                                 best2 = image->blockallocation[i+j];
 857                                 }
 858                                 if (j == w)
 859                                 {
 860                                         // this is a valid spot
 861                                         x = i;
 862                                         y = best = best2;
 863                                 }
 864                         }
 865
 866                         if (best + h > image->height)
 867                                 continue;
 868
 869                         for (i = 0;i < w;i++)
 870                                 image->blockallocation[x + i] = best + h;
 871
 872                         glt->x = x;
 873                         glt->y = y;
 874                         glt->z = 0;
 875                         glt->image = image;
 876                         image->texturecount++;
 877                         return;
 878                 }
 879
 880                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 881                 if (image == NULL)
 882                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 883                 image->type = GLIMAGETYPE_FRAGMENTS;
 884                 // make sure the created image is big enough for the fragment
 885                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
 886                 image->height = 1;
 887                 if (gltexturetypedimensions[glt->texturetype] >= 2)
 888                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
 889                 image->depth = 1;
 890                 if (gltexturetypedimensions[glt->texturetype] >= 3)
 891                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
 892                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
 893                 memset(image->blockallocation, 0, image->width * sizeof(short));
 894
 895                 x = 0;
 896                 y = 0;
 897                 z = 0;
 898                 for (i = 0;i < w;i++)
 899                         image->blockallocation[x + i] = y + h;
 900         }
 901         else
 902         {
 903                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 904
 905                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 906                 if (image == NULL)
 907                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 908                 image->type = GLIMAGETYPE_TILE;
 909                 image->blockallocation = NULL;
 910
 911                 // calculate final size
 912                 if (r_max_size.integer > realmaxsize)
 913                         Cvar_SetValue("r_max_size", realmaxsize);
 914                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
 915                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
 916                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
 917                 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
 918                 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
 919                 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
 920                 if (image->width < 1) image->width = 1;
 921                 if (image->height < 1) image->height = 1;
 922                 if (image->depth < 1) image->depth = 1;
 923         }
 924         image->texturetype = glt->texturetype;
 925         image->glinternalformat = texinfo->glinternalformat;
 926         image->glformat = texinfo->glformat;
 927         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
 928         image->bytesperpixel = texinfo->internalbytesperpixel;
 929         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 930         // get a texture number to use
 931         qglGenTextures(1, &image->texnum);
 932         *imagechainpointer = image;
 933         image->texturecount++;
 934
 935         glt->x = x;
 936         glt->y = y;
 937         glt->y = z;
 938         glt->image = image;
 939 }
 940
 941 // note: R_FindImageForTexture must be called before this
 942 static void R_UploadTexture (gltexture_t *glt)
 943 {
 944         if (!(glt->flags & GLTEXF_UPLOAD))
 945                 return;
 946
 947         R_Upload(glt, glt->inputtexels);
 948         if (glt->inputtexels)
 949         {
 950                 Mem_Free(glt->inputtexels);
 951                 glt->inputtexels = NULL;
 952                 glt->flags |= GLTEXF_DESTROYED;
 953         }
 954         else if (glt->flags & GLTEXF_DESTROYED)
 955                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 956 }
 957
 958 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)
 959 {
 960         int i, size;
 961         gltexture_t *glt;
 962         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 963         textypeinfo_t *texinfo;
 964
 965         if (cls.state == ca_dedicated)
 966                 return NULL;
 967
 968         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
 969                 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
 970         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 971                 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
 972         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 973                 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
 974
 975         /*
 976         glt = R_FindTexture (pool, identifier);
 977         if (glt)
 978         {
 979                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
 980                 R_FreeTexture((rtexture_t *)glt);
 981         }
 982         */
 983
 984         texinfo = R_GetTexTypeInfo(textype, flags);
 985         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 986         if (size < 1)
 987                 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
 988
 989         // clear the alpha flag if the texture has no transparent pixels
 990         switch(textype)
 991         {
 992         case TEXTYPE_PALETTE:
 993                 if (flags & TEXF_ALPHA)
 994                 {
 995                         flags &= ~TEXF_ALPHA;
 996                         if (data)
 997                         {
 998                                 for (i = 0;i < size;i++)
 999                                 {
1000                                         if (((qbyte *)&palette[data[i]])[3] < 255)
1001                                         {
1002                                                 flags |= TEXF_ALPHA;
1003                                                 break;
1004                                         }
1005                                 }
1006                         }
1007                 }
1008                 break;
1009         case TEXTYPE_RGB:
1010                 if (flags & TEXF_ALPHA)
1011                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1012                 break;
1013         case TEXTYPE_RGBA:
1014                 if (flags & TEXF_ALPHA)
1015                 {
1016                         flags &= ~TEXF_ALPHA;
1017                         if (data)
1018                         {
1019                                 for (i = 3;i < size;i += 4)
1020                                 {
1021                                         if (data[i] < 255)
1022                                         {
1023                                                 flags |= TEXF_ALPHA;
1024                                                 break;
1025                                         }
1026                                 }
1027                         }
1028                 }
1029                 break;
1030         default:
1031                 Host_Error("R_LoadTexture: unknown texture type\n");
1032         }
1033
1034         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1035         if (identifier)
1036         {
1037                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1038                 strcpy (glt->identifier, identifier);
1039         }
1040         else
1041                 glt->identifier = NULL;
1042         glt->pool = pool;
1043         glt->chain = pool->gltchain;
1044         pool->gltchain = glt;
1045         glt->width = width;
1046         glt->height = height;
1047         glt->depth = depth;
1048         glt->flags = flags | GLTEXF_UPLOAD;
1049         glt->textype = texinfo;
1050         glt->texturetype = texturetype;
1051         glt->inputdatasize = size;
1052         glt->palette = palette;
1053
1054         if (data)
1055         {
1056                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1057                 if (glt->inputtexels == NULL)
1058                         Sys_Error("R_LoadTexture: out of memory\n");
1059                 memcpy(glt->inputtexels, data, size);
1060         }
1061         else
1062                 glt->inputtexels = NULL;
1063
1064         R_FindImageForTexture(glt);
1065         R_PrecacheTexture(glt);
1066
1067         return (rtexture_t *)glt;
1068 }
1069
1070 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1071 {
1072         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1073 }
1074
1075 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)
1076 {
1077         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1078 }
1079
1080 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)
1081 {
1082         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1083 }
1084
1085 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1086 {
1087         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1088 }
1089
1090 int R_TextureHasAlpha(rtexture_t *rt)
1091 {
1092         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1093 }
1094
1095 int R_TextureWidth(rtexture_t *rt)
1096 {
1097         return rt ? ((gltexture_t *)rt)->width : 0;
1098 }
1099
1100 int R_TextureHeight(rtexture_t *rt)
1101 {
1102         return rt ? ((gltexture_t *)rt)->height : 0;
1103 }
1104
1105 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1106 {
1107         gltexture_t *glt;
1108         float iwidth, iheight, idepth;
1109         if (cls.state == ca_dedicated)
1110         {
1111                 if (x)
1112                         *x = 0;
1113                 if (y)
1114                         *y = 0;
1115                 if (z)
1116                         *z = 0;
1117                 if (fx1 || fy1 || fx2 || fy2)
1118                 {
1119                         if (fx1)
1120                                 *fx1 = 0;
1121                         if (fy1)
1122                                 *fy1 = 0;
1123                         if (fz1)
1124                                 *fz1 = 0;
1125                         if (fx2)
1126                                 *fx2 = 1;
1127                         if (fy2)
1128                                 *fy2 = 1;
1129                         if (fz2)
1130                                 *fz2 = 1;
1131                 }
1132                 return;
1133         }
1134         if (!rt)
1135                 Host_Error("R_FragmentLocation: no texture supplied\n");
1136         glt = (gltexture_t *)rt;
1137         if (glt->flags & TEXF_FRAGMENT)
1138         {
1139                 if (x)
1140                         *x = glt->x;
1141                 if (y)
1142                         *y = glt->y;
1143                 if (fx1 || fy1 || fx2 || fy2)
1144                 {
1145                         iwidth = 1.0f / glt->image->width;
1146                         iheight = 1.0f / glt->image->height;
1147                         idepth = 1.0f / glt->image->depth;
1148                         if (fx1)
1149                                 *fx1 = glt->x * iwidth;
1150                         if (fy1)
1151                                 *fy1 = glt->y * iheight;
1152                         if (fz1)
1153                                 *fz1 = glt->z * idepth;
1154                         if (fx2)
1155                                 *fx2 = (glt->x + glt->width) * iwidth;
1156                         if (fy2)
1157                                 *fy2 = (glt->y + glt->height) * iheight;
1158                         if (fz2)
1159                                 *fz2 = (glt->z + glt->depth) * idepth;
1160                 }
1161         }
1162         else
1163         {
1164                 if (x)
1165                         *x = 0;
1166                 if (y)
1167                         *y = 0;
1168                 if (z)
1169                         *z = 0;
1170                 if (fx1 || fy1 || fx2 || fy2)
1171                 {
1172                         if (fx1)
1173                                 *fx1 = 0;
1174                         if (fy1)
1175                                 *fy1 = 0;
1176                         if (fz1)
1177                                 *fz1 = 0;
1178                         if (fx2)
1179                                 *fx2 = 1;
1180                         if (fy2)
1181                                 *fy2 = 1;
1182                         if (fz2)
1183                                 *fz2 = 1;
1184                 }
1185         }
1186 }
1187
1188 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1189 {
1190         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1191 }
1192
1193 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1194 {
1195         return width;
1196 }
1197
1198 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1199 {
1200         gltexture_t *glt;
1201         if (rt == NULL)
1202                 Host_Error("R_UpdateTexture: no texture supplied\n");
1203         if (data == NULL)
1204                 Host_Error("R_UpdateTexture: no data supplied\n");
1205         glt = (gltexture_t *)rt;
1206
1207         // if it has not been uploaded yet, update the data that will be used when it is
1208         if (glt->inputtexels)
1209                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1210         else
1211                 R_Upload(glt, data);
1212 }
1213