gl_textures.c

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