gl_textures.c

   1
   2 #include "quakedef.h"
   3 #include "image.h"
   4 #include "jpeg.h"
   5
   6 cvar_t  gl_max_size = {CVAR_SAVE, "gl_max_size", "2048"};
   7 cvar_t  gl_max_scrapsize = {CVAR_SAVE, "gl_max_scrapsize", "256"};
   8 cvar_t  gl_picmip = {CVAR_SAVE, "gl_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", "1"};
  12
  13 int             gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
  14 int             gl_filter_mag = GL_LINEAR;
  15
  16
  17 static mempool_t *texturemempool;
  18 static mempool_t *texturedatamempool;
  19 static mempool_t *textureprocessingmempool;
  20
  21 // note: this must not conflict with TEXF_ flags in r_textures.h
  22 // cleared when a texture is uploaded
  23 #define GLTEXF_UPLOAD 0x00010000
  24 // bitmask for mismatch checking
  25 #define GLTEXF_IMPORTANTBITS (0)
  26 // set when image is uploaded and freed
  27 #define GLTEXF_DESTROYED 0x00040000
  28
  29 // size of images which hold fragment textures, ignores picmip and max_size
  30 static int block_size;
  31
  32 typedef struct
  33 {
  34         int textype;
  35         int inputbytesperpixel;
  36         int internalbytesperpixel;
  37         int glformat;
  38         int glinternalformat;
  39 }
  40 textypeinfo_t;
  41
  42 static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
  43 static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
  44 static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
  45 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
  46 static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
  47 static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
  48
  49 // a tiling texture (most common type)
  50 #define GLIMAGETYPE_TILE 0
  51 // a fragments texture (contains one or more fragment textures)
  52 #define GLIMAGETYPE_FRAGMENTS 1
  53
  54 #define GLTEXTURETYPE_1D 0
  55 #define GLTEXTURETYPE_2D 1
  56 #define GLTEXTURETYPE_3D 2
  57 #define GLTEXTURETYPE_CUBEMAP 3
  58
  59 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
  60 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
  61 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
  62 static int cubemapside[6] =
  63 {
  64         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  65         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  66         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  67         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  68         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  69         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  70 };
  71
  72 // a gltextureimage can have one (or more if fragments) gltextures inside
  73 typedef struct gltextureimage_s
  74 {
  75         struct gltextureimage_s *imagechain;
  76         int texturecount;
  77         int type; // one of the GLIMAGETYPE_ values
  78         int texturetype; // one of the GLTEXTURETYPE_ values
  79         int sides; // 1 or 6 depending on texturetype
  80         int texnum; // GL texture slot number
  81         int width, height, depth; // 3D texture support
  82         int bytesperpixel; // bytes per pixel
  83         int glformat; // GL_RGB or GL_RGBA
  84         int glinternalformat; // 3 or 4
  85         int flags;
  86         short *blockallocation; // fragment allocation (2D only)
  87 }
  88 gltextureimage_t;
  89
  90 typedef struct gltexture_s
  91 {
  92         // this field is exposed to the R_GetTexture macro, for speed reasons
  93         // (must be identical in rtexture_t)
  94         int texnum; // GL texture slot number
  95
  96         // pointer to texturepool (check this to see if the texture is allocated)
  97         struct gltexturepool_s *pool;
  98         // pointer to next texture in texturepool chain
  99         struct gltexture_s *chain;
 100         // pointer into gltextureimage array
 101         gltextureimage_t *image;
 102         // name of the texture (this might be removed someday), no duplicates
 103         char *identifier;
 104         // location in the image, and size
 105         int x, y, z, width, height, depth;
 106         // copy of the original texture(s) supplied to the upload function, for
 107         // delayed uploads (non-precached)
 108         qbyte *inputtexels;
 109         // original data size in *inputtexels
 110         int inputdatasize;
 111         // flags supplied to the LoadTexture function
 112         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 113         int flags;
 114         // pointer to one of the textype_ structs
 115         textypeinfo_t *textype;
 116         // one of the GLTEXTURETYPE_ values
 117         int texturetype;
 118         // palette if the texture is TEXTYPE_PALETTE
 119         const unsigned int *palette;
 120 }
 121 gltexture_t;
 122
 123 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 124
 125 typedef struct gltexturepool_s
 126 {
 127         unsigned int sentinel;
 128         struct gltextureimage_s *imagechain;
 129         struct gltexture_s *gltchain;
 130         struct gltexturepool_s *next;
 131 }
 132 gltexturepool_t;
 133
 134 static gltexturepool_t *gltexturepoolchain = NULL;
 135
 136 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
 137 static int resizebuffersize = 0;
 138 static qbyte *texturebuffer;
 139 static int texturebuffersize = 0;
 140
 141 static int realmaxsize = 0;
 142
 143 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 144 {
 145         if (flags & TEXF_ALPHA)
 146         {
 147                 switch(textype)
 148                 {
 149                 case TEXTYPE_PALETTE:
 150                         return &textype_palette_alpha;
 151                 case TEXTYPE_RGB:
 152                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
 153                         return NULL;
 154                 case TEXTYPE_RGBA:
 155                         return &textype_rgba_alpha;
 156                 default:
 157                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 158                         return NULL;
 159                 }
 160         }
 161         else
 162         {
 163                 switch(textype)
 164                 {
 165                 case TEXTYPE_PALETTE:
 166                         return &textype_palette;
 167                 case TEXTYPE_RGB:
 168                         return &textype_rgb;
 169                 case TEXTYPE_RGBA:
 170                         return &textype_rgba;
 171                 case TEXTYPE_DSDT:
 172                         return &textype_dsdt;
 173                 default:
 174                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
 175                         return NULL;
 176                 }
 177         }
 178 }
 179
 180 static void R_UploadTexture(gltexture_t *t);
 181
 182 static void R_PrecacheTexture(gltexture_t *glt)
 183 {
 184         int precache;
 185         precache = false;
 186         if (glt->flags & TEXF_ALWAYSPRECACHE)
 187                 precache = true;
 188         else if (r_precachetextures.integer >= 2)
 189                 precache = true;
 190         else if (r_precachetextures.integer >= 1)
 191                 if (glt->flags & TEXF_PRECACHE)
 192                         precache = true;
 193
 194         if (precache)
 195                 R_UploadTexture(glt);
 196 }
 197
 198 int R_RealGetTexture(rtexture_t *rt)
 199 {
 200         if (rt)
 201         {
 202                 gltexture_t *glt;
 203                 glt = (gltexture_t *)rt;
 204                 if (glt->flags & GLTEXF_UPLOAD)
 205                         R_UploadTexture(glt);
 206                 glt->texnum = glt->image->texnum;
 207                 return glt->image->texnum;
 208         }
 209         else
 210                 return 0;
 211 }
 212
 213 void R_FreeTexture(rtexture_t *rt)
 214 {
 215         gltexture_t *glt, **gltpointer;
 216         gltextureimage_t *image, **gltimagepointer;
 217
 218         glt = (gltexture_t *)rt;
 219         if (glt == NULL)
 220                 Host_Error("R_FreeTexture: texture == NULL\n");
 221
 222         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 223         if (*gltpointer == glt)
 224                 *gltpointer = glt->chain;
 225         else
 226                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
 227
 228         // note: if freeing a fragment texture, this will not make the claimed
 229         // space available for new textures unless all other fragments in the
 230         // image are also freed
 231         if (glt->image)
 232         {
 233                 image = glt->image;
 234                 image->texturecount--;
 235                 if (image->texturecount < 1)
 236                 {
 237                         for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
 238                         if (*gltimagepointer == image)
 239                                 *gltimagepointer = image->imagechain;
 240                         else
 241                                 Host_Error("R_FreeTexture: image not linked in pool\n");
 242                         if (image->texnum)
 243                                 qglDeleteTextures(1, &image->texnum);
 244                         if (image->blockallocation)
 245                                 Mem_Free(image->blockallocation);
 246                         Mem_Free(image);
 247                 }
 248         }
 249
 250         if (glt->identifier)
 251                 Mem_Free(glt->identifier);
 252         if (glt->inputtexels)
 253                 Mem_Free(glt->inputtexels);
 254         Mem_Free(glt);
 255 }
 256
 257 /*
 258 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
 259 {
 260         gltexture_t     *glt;
 261
 262         if (!identifier)
 263                 return NULL;
 264
 265         for (glt = pool->gltchain;glt;glt = glt->chain)
 266                 if (glt->identifier && !strcmp (identifier, glt->identifier))
 267                         return glt;
 268
 269         return NULL;
 270 }
 271 */
 272
 273 rtexturepool_t *R_AllocTexturePool(void)
 274 {
 275         gltexturepool_t *pool;
 276         if (texturemempool == NULL)
 277                 return NULL;
 278         pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 279         if (pool == NULL)
 280                 return NULL;
 281         pool->next = gltexturepoolchain;
 282         gltexturepoolchain = pool;
 283         pool->sentinel = TEXTUREPOOL_SENTINEL;
 284         return (rtexturepool_t *)pool;
 285 }
 286
 287 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 288 {
 289         gltexturepool_t *pool, **poolpointer;
 290         if (rtexturepool == NULL)
 291                 return;
 292         if (*rtexturepool == NULL)
 293                 return;
 294         pool = (gltexturepool_t *)(*rtexturepool);
 295         *rtexturepool = NULL;
 296         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 297                 Host_Error("R_FreeTexturePool: pool already freed\n");
 298         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 299         if (*poolpointer == pool)
 300                 *poolpointer = pool->next;
 301         else
 302                 Host_Error("R_FreeTexturePool: pool not linked\n");
 303         while (pool->gltchain)
 304                 R_FreeTexture((rtexture_t *)pool->gltchain);
 305         if (pool->imagechain)
 306                 Sys_Error("R_FreeTexturePool: not all images freed\n");
 307         Mem_Free(pool);
 308 }
 309
 310
 311 typedef struct
 312 {
 313         char *name;
 314         int minification, magnification;
 315 }
 316 glmode_t;
 317
 318 static glmode_t modes[] =
 319 {
 320         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 321         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 322         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 323         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 324         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 325         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 326 };
 327
 328 static void GL_TextureMode_f (void)
 329 {
 330         int i;
 331         GLint oldbindtexnum;
 332         gltextureimage_t *image;
 333         gltexturepool_t *pool;
 334
 335         if (Cmd_Argc() == 1)
 336         {
 337                 for (i = 0;i < 6;i++)
 338                 {
 339                         if (gl_filter_min == modes[i].minification)
 340                         {
 341                                 Con_Printf("%s\n", modes[i].name);
 342                                 return;
 343                         }
 344                 }
 345                 Con_Print("current filter is unknown???\n");
 346                 return;
 347         }
 348
 349         for (i = 0;i < 6;i++)
 350                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 351                         break;
 352         if (i == 6)
 353         {
 354                 Con_Print("bad filter name\n");
 355                 return;
 356         }
 357
 358         gl_filter_min = modes[i].minification;
 359         gl_filter_mag = modes[i].magnification;
 360
 361         // change all the existing mipmap texture objects
 362         // FIXME: force renderer(/client/something?) restart instead?
 363         for (pool = gltexturepoolchain;pool;pool = pool->next)
 364         {
 365                 for (image = pool->imagechain;image;image = image->imagechain)
 366                 {
 367                         // only update already uploaded images
 368                         if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 369                         {
 370                                 qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
 371                                 qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
 372                                 if (image->flags & TEXF_MIPMAP)
 373                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
 374                                 else
 375                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 376                                 qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 377                                 qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
 378                         }
 379                 }
 380         }
 381 }
 382
 383 static int R_CalcTexelDataSize (gltexture_t *glt)
 384 {
 385         int width2, height2, depth2, size;
 386         if (glt->flags & TEXF_FRAGMENT)
 387                 size = glt->width * glt->height * glt->depth;
 388         else
 389         {
 390                 if (gl_max_size.integer > realmaxsize)
 391                         Cvar_SetValue("gl_max_size", realmaxsize);
 392                 // calculate final size
 393                 for (width2 = 1;width2 < glt->width;width2 <<= 1);
 394                 for (height2 = 1;height2 < glt->height;height2 <<= 1);
 395                 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
 396                 for (width2 >>= gl_picmip.integer;width2 > gl_max_size.integer;width2 >>= 1);
 397                 for (height2 >>= gl_picmip.integer;height2 > gl_max_size.integer;height2 >>= 1);
 398                 for (depth2 >>= gl_picmip.integer;depth2 > gl_max_size.integer;depth2 >>= 1);
 399                 if (width2 < 1) width2 = 1;
 400                 if (height2 < 1) height2 = 1;
 401                 if (depth2 < 1) depth2 = 1;
 402
 403                 size = 0;
 404                 if (glt->flags & TEXF_MIPMAP)
 405                 {
 406                         while (width2 > 1 || height2 > 1 || depth2 > 1)
 407                         {
 408                                 size += width2 * height2 * depth2;
 409                                 if (width2 > 1)
 410                                         width2 >>= 1;
 411                                 if (height2 > 1)
 412                                         height2 >>= 1;
 413                                 if (depth2 > 1)
 414                                         depth2 >>= 1;
 415                         }
 416                         size++; // count the last 1x1 mipmap
 417                 }
 418                 else
 419                         size = width2 * height2 * depth2;
 420         }
 421         size *= glt->textype->internalbytesperpixel * glt->image->sides;
 422
 423         return size;
 424 }
 425
 426 void R_TextureStats_PrintTotal(void)
 427 {
 428         int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
 429         gltexture_t *glt;
 430         gltexturepool_t *pool;
 431         for (pool = gltexturepoolchain;pool;pool = pool->next)
 432         {
 433                 for (glt = pool->gltchain;glt;glt = glt->chain)
 434                 {
 435                         glsize = R_CalcTexelDataSize(glt);
 436                         total++;
 437                         totalt += glsize;
 438                         totalp += glt->inputdatasize;
 439                         if (!(glt->flags & GLTEXF_UPLOAD))
 440                         {
 441                                 loaded++;
 442                                 loadedt += glsize;
 443                                 loadedp += glt->inputdatasize;
 444                         }
 445                 }
 446         }
 447         Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
 448 }
 449
 450 static void R_TextureStats_f(void)
 451 {
 452         int loaded;
 453         gltexture_t *glt;
 454         gltexturepool_t *pool;
 455         Con_Print("glsize input loaded mip alpha name\n");
 456         for (pool = gltexturepoolchain;pool;pool = pool->next)
 457         {
 458                 for (glt = pool->gltchain;glt;glt = glt->chain)
 459                 {
 460                         loaded = !(glt->flags & GLTEXF_UPLOAD);
 461                         Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
 462                 }
 463                 Con_Printf("pool %10p\n", pool);
 464         }
 465         R_TextureStats_PrintTotal();
 466 }
 467
 468 char engineversion[40];
 469
 470 static void r_textures_start(void)
 471 {
 472         // deal with size limits of various drivers (3dfx in particular)
 473         qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
 474         CHECKGLERROR
 475         // LordHavoc: allow any alignment
 476         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 477         CHECKGLERROR
 478
 479         // use the largest scrap texture size we can (not sure if this is really a good idea)
 480         for (block_size = 1;block_size < realmaxsize && block_size < gl_max_scrapsize.integer;block_size <<= 1);
 481
 482         texturemempool = Mem_AllocPool("Texture Info");
 483         texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
 484         textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
 485
 486         // Disable JPEG screenshots if the DLL isn't loaded
 487         if (! JPEG_OpenLibrary ())
 488                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 489 }
 490
 491 static void r_textures_shutdown(void)
 492 {
 493         rtexturepool_t *temp;
 494
 495         JPEG_CloseLibrary ();
 496
 497         while(gltexturepoolchain)
 498         {
 499                 temp = (rtexturepool_t *) gltexturepoolchain;
 500                 R_FreeTexturePool(&temp);
 501         }
 502
 503         resizebuffersize = 0;
 504         texturebuffersize = 0;
 505         resizebuffer = NULL;
 506         colorconvertbuffer = NULL;
 507         texturebuffer = NULL;
 508         Mem_FreePool(&texturemempool);
 509         Mem_FreePool(&texturedatamempool);
 510         Mem_FreePool(&textureprocessingmempool);
 511 }
 512
 513 static void r_textures_newmap(void)
 514 {
 515 }
 516
 517 void R_Textures_Init (void)
 518 {
 519         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
 520         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
 521         Cvar_RegisterVariable (&gl_max_scrapsize);
 522         Cvar_RegisterVariable (&gl_max_size);
 523         Cvar_RegisterVariable (&gl_picmip);
 524         Cvar_RegisterVariable (&r_lerpimages);
 525         Cvar_RegisterVariable (&r_precachetextures);
 526         Cvar_RegisterVariable (&gl_texture_anisotropy);
 527
 528         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 529 }
 530
 531 void R_Textures_Frame (void)
 532 {
 533         static int old_aniso = 0;
 534
 535         // could do procedural texture animation here, if we keep track of which
 536         // textures were accessed this frame...
 537
 538         // free the resize buffers
 539         resizebuffersize = 0;
 540         if (resizebuffer)
 541         {
 542                 Mem_Free(resizebuffer);
 543                 resizebuffer = NULL;
 544         }
 545         if (colorconvertbuffer)
 546         {
 547                 Mem_Free(colorconvertbuffer);
 548                 colorconvertbuffer = NULL;
 549         }
 550
 551         if (old_aniso != gl_texture_anisotropy.integer)
 552         {
 553                 gltextureimage_t *image;
 554                 gltexturepool_t *pool;
 555                 GLint oldbindtexnum;
 556
 557                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 558
 559                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 560
 561                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 562                 {
 563                         for (image = pool->imagechain;image;image = image->imagechain)
 564                         {
 565                                 // only update already uploaded images
 566                                 if (!(image->flags & GLTEXF_UPLOAD))
 567                                 {
 568                                         qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
 569
 570                                         qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
 571                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 572
 573                                         qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
 574                                 }
 575                         }
 576                 }
 577         }
 578 }
 579
 580 void R_MakeResizeBufferBigger(int size)
 581 {
 582         if (resizebuffersize < size)
 583         {
 584                 resizebuffersize = size;
 585                 if (resizebuffer)
 586                         Mem_Free(resizebuffer);
 587                 if (colorconvertbuffer)
 588                         Mem_Free(colorconvertbuffer);
 589                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 590                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
 591                 if (!resizebuffer || !colorconvertbuffer)
 592                         Host_Error("R_Upload: out of memory\n");
 593         }
 594 }
 595
 596 static void GL_SetupTextureParameters(int flags, int texturetype)
 597 {
 598         int textureenum = gltexturetypeenums[texturetype];
 599         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 600
 601         CHECKGLERROR
 602
 603         if (gl_support_anisotropy)
 604         {
 605                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 606                 if (gl_texture_anisotropy.integer != aniso)
 607                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 608                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 609         }
 610         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 611         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 612         if (gltexturetypedimensions[texturetype] >= 3)
 613         {
 614                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 615         }
 616
 617         CHECKGLERROR
 618         if (flags & TEXF_FORCENEAREST)
 619         {
 620                 if (flags & TEXF_MIPMAP)
 621                 {
 622                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 623                 }
 624                 else
 625                 {
 626                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 627                 }
 628                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 629         }
 630         else if (flags & TEXF_FORCELINEAR)
 631         {
 632                 if (flags & TEXF_MIPMAP)
 633                 {
 634                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 635                         {
 636                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 637                         }
 638                         else
 639                         {
 640                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 641                         }
 642                 }
 643                 else
 644                 {
 645                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 646                 }
 647                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 648         }
 649         else
 650         {
 651                 if (flags & TEXF_MIPMAP)
 652                 {
 653                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 654                 }
 655                 else
 656                 {
 657                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 658                 }
 659                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 660         }
 661
 662         CHECKGLERROR
 663 }
 664
 665 static void R_Upload(gltexture_t *glt, qbyte *data)
 666 {
 667         int i, mip, width, height, depth;
 668         GLint oldbindtexnum;
 669         qbyte *prevbuffer;
 670         prevbuffer = data;
 671
 672         CHECKGLERROR
 673
 674         glt->texnum = glt->image->texnum;
 675         // we need to restore the texture binding after finishing the upload
 676         qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
 677         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
 678         CHECKGLERROR
 679         glt->flags &= ~GLTEXF_UPLOAD;
 680
 681         if (glt->flags & TEXF_FRAGMENT)
 682         {
 683                 if (glt->image->flags & GLTEXF_UPLOAD)
 684                 {
 685                         glt->image->flags &= ~GLTEXF_UPLOAD;
 686                         Con_DPrint("uploaded new fragments image\n");
 687                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 688                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 689                         switch(glt->image->texturetype)
 690                         {
 691                         case GLTEXTURETYPE_1D:
 692                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 693                                 CHECKGLERROR
 694                                 break;
 695                         case GLTEXTURETYPE_2D:
 696                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 697                                 CHECKGLERROR
 698                                 break;
 699                         case GLTEXTURETYPE_3D:
 700                                 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);
 701                                 CHECKGLERROR
 702                                 break;
 703                         default:
 704                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 705                                 break;
 706                         }
 707                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 708                 }
 709
 710                 if (prevbuffer == NULL)
 711                 {
 712                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 713                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
 714                         prevbuffer = resizebuffer;
 715                 }
 716                 else if (glt->textype->textype == TEXTYPE_PALETTE)
 717                 {
 718                         // promote paletted to RGBA, so we only have to worry about RGB and
 719                         // RGBA in the rest of this code
 720                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
 721                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
 722                         prevbuffer = colorconvertbuffer;
 723                 }
 724
 725                 switch(glt->image->texturetype)
 726                 {
 727                 case GLTEXTURETYPE_1D:
 728                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 729                         CHECKGLERROR
 730                         break;
 731                 case GLTEXTURETYPE_2D:
 732                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 733                         CHECKGLERROR
 734                         break;
 735                 case GLTEXTURETYPE_3D:
 736                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 737                         CHECKGLERROR
 738                         break;
 739                 default:
 740                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
 741                         break;
 742                 }
 743         }
 744         else
 745         {
 746                 glt->image->flags &= ~GLTEXF_UPLOAD;
 747
 748                 // these are rounded up versions of the size to do better resampling
 749                 for (width  = 1;width  < glt->width ;width  <<= 1);
 750                 for (height = 1;height < glt->height;height <<= 1);
 751                 for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 752
 753                 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
 754
 755                 if (prevbuffer == NULL)
 756                 {
 757                         width = glt->image->width;
 758                         height = glt->image->height;
 759                         depth = glt->image->depth;
 760                         memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
 761                         prevbuffer = resizebuffer;
 762                 }
 763                 else
 764                 {
 765                         if (glt->textype->textype == TEXTYPE_PALETTE)
 766                         {
 767                                 // promote paletted to RGBA, so we only have to worry about RGB and
 768                                 // RGBA in the rest of this code
 769                                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
 770                                 prevbuffer = colorconvertbuffer;
 771                         }
 772                 }
 773
 774                 // cubemaps contain multiple images and thus get processed a bit differently
 775                 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
 776                 {
 777                         if (glt->width != width || glt->height != height || glt->depth != depth)
 778                         {
 779                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 780                                 prevbuffer = resizebuffer;
 781                         }
 782                         // picmip/max_size
 783                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 784                         {
 785                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 786                                 prevbuffer = resizebuffer;
 787                         }
 788                 }
 789                 mip = 0;
 790                 switch(glt->image->texturetype)
 791                 {
 792                 case GLTEXTURETYPE_1D:
 793                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 794                         CHECKGLERROR
 795                         if (glt->flags & TEXF_MIPMAP)
 796                         {
 797                                 while (width > 1 || height > 1 || depth > 1)
 798                                 {
 799                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 800                                         prevbuffer = resizebuffer;
 801                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 802                                         CHECKGLERROR
 803                                 }
 804                         }
 805                         break;
 806                 case GLTEXTURETYPE_2D:
 807                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 808                         CHECKGLERROR
 809                         if (glt->flags & TEXF_MIPMAP)
 810                         {
 811                                 while (width > 1 || height > 1 || depth > 1)
 812                                 {
 813                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 814                                         prevbuffer = resizebuffer;
 815                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 816                                         CHECKGLERROR
 817                                 }
 818                         }
 819                         break;
 820                 case GLTEXTURETYPE_3D:
 821                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 822                         CHECKGLERROR
 823                         if (glt->flags & TEXF_MIPMAP)
 824                         {
 825                                 while (width > 1 || height > 1 || depth > 1)
 826                                 {
 827                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 828                                         prevbuffer = resizebuffer;
 829                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 830                                         CHECKGLERROR
 831                                 }
 832                         }
 833                         break;
 834                 case GLTEXTURETYPE_CUBEMAP:
 835                         // convert and upload each side in turn,
 836                         // from a continuous block of input texels
 837                         texturebuffer = prevbuffer;
 838                         for (i = 0;i < 6;i++)
 839                         {
 840                                 prevbuffer = texturebuffer;
 841                                 texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
 842                                 if (glt->width != width || glt->height != height || glt->depth != depth)
 843                                 {
 844                                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 845                                         prevbuffer = resizebuffer;
 846                                 }
 847                                 // picmip/max_size
 848                                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 849                                 {
 850                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 851                                         prevbuffer = resizebuffer;
 852                                 }
 853                                 mip = 0;
 854                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 855                                 CHECKGLERROR
 856                                 if (glt->flags & TEXF_MIPMAP)
 857                                 {
 858                                         while (width > 1 || height > 1 || depth > 1)
 859                                         {
 860                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 861                                                 prevbuffer = resizebuffer;
 862                                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 863                                                 CHECKGLERROR
 864                                         }
 865                                 }
 866                         }
 867                         break;
 868                 }
 869                 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 870         }
 871         qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
 872 }
 873
 874 static void R_FindImageForTexture(gltexture_t *glt)
 875 {
 876         int i, j, best, best2, x, y, z, w, h, d;
 877         textypeinfo_t *texinfo;
 878         gltexturepool_t *pool;
 879         gltextureimage_t *image, **imagechainpointer;
 880         texinfo = glt->textype;
 881         pool = glt->pool;
 882
 883         // remains -1 until uploaded
 884         glt->texnum = -1;
 885
 886         x = 0;
 887         y = 0;
 888         z = 0;
 889         w = glt->width;
 890         h = glt->height;
 891         d = glt->depth;
 892         if (glt->flags & TEXF_FRAGMENT)
 893         {
 894                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
 895                 {
 896                         image = *imagechainpointer;
 897                         if (image->type != GLIMAGETYPE_FRAGMENTS)
 898                                 continue;
 899                         if (image->texturetype != glt->texturetype)
 900                                 continue;
 901                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
 902                                 continue;
 903                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
 904                                 continue;
 905                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
 906                                 continue;
 907
 908                         // got a fragments texture, find a place in it if we can
 909                         for (best = image->width, i = 0;i < image->width - w;i++)
 910                         {
 911                                 for (best2 = 0, j = 0;j < w;j++)
 912                                 {
 913                                         if (image->blockallocation[i+j] >= best)
 914                                                 break;
 915                                         if (best2 < image->blockallocation[i+j])
 916                                                 best2 = image->blockallocation[i+j];
 917                                 }
 918                                 if (j == w)
 919                                 {
 920                                         // this is a valid spot
 921                                         x = i;
 922                                         y = best = best2;
 923                                 }
 924                         }
 925
 926                         if (best + h > image->height)
 927                                 continue;
 928
 929                         for (i = 0;i < w;i++)
 930                                 image->blockallocation[x + i] = best + h;
 931
 932                         glt->x = x;
 933                         glt->y = y;
 934                         glt->z = 0;
 935                         glt->image = image;
 936                         image->texturecount++;
 937                         return;
 938                 }
 939
 940                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 941                 if (image == NULL)
 942                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 943                 image->type = GLIMAGETYPE_FRAGMENTS;
 944                 // make sure the created image is big enough for the fragment
 945                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
 946                 image->height = 1;
 947                 if (gltexturetypedimensions[glt->texturetype] >= 2)
 948                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
 949                 image->depth = 1;
 950                 if (gltexturetypedimensions[glt->texturetype] >= 3)
 951                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
 952                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
 953                 memset(image->blockallocation, 0, image->width * sizeof(short));
 954
 955                 x = 0;
 956                 y = 0;
 957                 z = 0;
 958                 for (i = 0;i < w;i++)
 959                         image->blockallocation[x + i] = y + h;
 960         }
 961         else
 962         {
 963                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 964
 965                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 966                 if (image == NULL)
 967                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
 968                 image->type = GLIMAGETYPE_TILE;
 969                 image->blockallocation = NULL;
 970
 971                 // calculate final size
 972                 if (gl_max_size.integer > realmaxsize)
 973                         Cvar_SetValue("gl_max_size", realmaxsize);
 974                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
 975                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
 976                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
 977                 for (image->width >>= gl_picmip.integer;image->width > gl_max_size.integer;image->width >>= 1);
 978                 for (image->height >>= gl_picmip.integer;image->height > gl_max_size.integer;image->height >>= 1);
 979                 for (image->depth >>= gl_picmip.integer;image->depth > gl_max_size.integer;image->depth >>= 1);
 980                 if (image->width < 1) image->width = 1;
 981                 if (image->height < 1) image->height = 1;
 982                 if (image->depth < 1) image->depth = 1;
 983         }
 984         image->texturetype = glt->texturetype;
 985         image->glinternalformat = texinfo->glinternalformat;
 986         image->glformat = texinfo->glformat;
 987         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
 988         image->bytesperpixel = texinfo->internalbytesperpixel;
 989         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 990         // get a texture number to use
 991         qglGenTextures(1, &image->texnum);
 992         *imagechainpointer = image;
 993         image->texturecount++;
 994
 995         glt->x = x;
 996         glt->y = y;
 997         glt->y = z;
 998         glt->image = image;
 999 }
1000
1001 // note: R_FindImageForTexture must be called before this
1002 static void R_UploadTexture (gltexture_t *glt)
1003 {
1004         if (!(glt->flags & GLTEXF_UPLOAD))
1005                 return;
1006
1007         R_Upload(glt, glt->inputtexels);
1008         if (glt->inputtexels)
1009         {
1010                 Mem_Free(glt->inputtexels);
1011                 glt->inputtexels = NULL;
1012                 glt->flags |= GLTEXF_DESTROYED;
1013         }
1014         else if (glt->flags & GLTEXF_DESTROYED)
1015                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
1016 }
1017
1018 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)
1019 {
1020         int i, size;
1021         gltexture_t *glt;
1022         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1023         textypeinfo_t *texinfo;
1024
1025         if (cls.state == ca_dedicated)
1026                 return NULL;
1027
1028         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
1029                 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
1030         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
1031                 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
1032         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
1033                 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
1034
1035         /*
1036         glt = R_FindTexture (pool, identifier);
1037         if (glt)
1038         {
1039                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
1040                 R_FreeTexture((rtexture_t *)glt);
1041         }
1042         */
1043
1044         texinfo = R_GetTexTypeInfo(textype, flags);
1045         size = width * height * depth * sides * texinfo->inputbytesperpixel;
1046         if (size < 1)
1047                 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
1048
1049         // clear the alpha flag if the texture has no transparent pixels
1050         switch(textype)
1051         {
1052         case TEXTYPE_PALETTE:
1053                 if (flags & TEXF_ALPHA)
1054                 {
1055                         flags &= ~TEXF_ALPHA;
1056                         if (data)
1057                         {
1058                                 for (i = 0;i < size;i++)
1059                                 {
1060                                         if (((qbyte *)&palette[data[i]])[3] < 255)
1061                                         {
1062                                                 flags |= TEXF_ALPHA;
1063                                                 break;
1064                                         }
1065                                 }
1066                         }
1067                 }
1068                 break;
1069         case TEXTYPE_RGB:
1070                 if (flags & TEXF_ALPHA)
1071                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1072                 break;
1073         case TEXTYPE_RGBA:
1074                 if (flags & TEXF_ALPHA)
1075                 {
1076                         flags &= ~TEXF_ALPHA;
1077                         if (data)
1078                         {
1079                                 for (i = 3;i < size;i += 4)
1080                                 {
1081                                         if (data[i] < 255)
1082                                         {
1083                                                 flags |= TEXF_ALPHA;
1084                                                 break;
1085                                         }
1086                                 }
1087                         }
1088                 }
1089                 break;
1090         case TEXTYPE_DSDT:
1091                 break;
1092         default:
1093                 Host_Error("R_LoadTexture: unknown texture type\n");
1094         }
1095
1096         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1097         if (identifier)
1098         {
1099                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1100                 strcpy (glt->identifier, identifier);
1101         }
1102         else
1103                 glt->identifier = NULL;
1104         glt->pool = pool;
1105         glt->chain = pool->gltchain;
1106         pool->gltchain = glt;
1107         glt->width = width;
1108         glt->height = height;
1109         glt->depth = depth;
1110         glt->flags = flags | GLTEXF_UPLOAD;
1111         glt->textype = texinfo;
1112         glt->texturetype = texturetype;
1113         glt->inputdatasize = size;
1114         glt->palette = palette;
1115
1116         if (data)
1117         {
1118                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1119                 if (glt->inputtexels == NULL)
1120                         Sys_Error("R_LoadTexture: out of memory\n");
1121                 memcpy(glt->inputtexels, data, size);
1122         }
1123         else
1124                 glt->inputtexels = NULL;
1125
1126         R_FindImageForTexture(glt);
1127         R_PrecacheTexture(glt);
1128
1129         return (rtexture_t *)glt;
1130 }
1131
1132 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1133 {
1134         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1135 }
1136
1137 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)
1138 {
1139         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1140 }
1141
1142 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)
1143 {
1144         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1145 }
1146
1147 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1148 {
1149         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1150 }
1151
1152 int R_TextureHasAlpha(rtexture_t *rt)
1153 {
1154         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1155 }
1156
1157 int R_TextureWidth(rtexture_t *rt)
1158 {
1159         return rt ? ((gltexture_t *)rt)->width : 0;
1160 }
1161
1162 int R_TextureHeight(rtexture_t *rt)
1163 {
1164         return rt ? ((gltexture_t *)rt)->height : 0;
1165 }
1166
1167 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1168 {
1169         gltexture_t *glt;
1170         float iwidth, iheight, idepth;
1171         if (cls.state == ca_dedicated)
1172         {
1173                 if (x)
1174                         *x = 0;
1175                 if (y)
1176                         *y = 0;
1177                 if (z)
1178                         *z = 0;
1179                 if (fx1 || fy1 || fx2 || fy2)
1180                 {
1181                         if (fx1)
1182                                 *fx1 = 0;
1183                         if (fy1)
1184                                 *fy1 = 0;
1185                         if (fz1)
1186                                 *fz1 = 0;
1187                         if (fx2)
1188                                 *fx2 = 1;
1189                         if (fy2)
1190                                 *fy2 = 1;
1191                         if (fz2)
1192                                 *fz2 = 1;
1193                 }
1194                 return;
1195         }
1196         if (!rt)
1197                 Host_Error("R_FragmentLocation: no texture supplied\n");
1198         glt = (gltexture_t *)rt;
1199         if (glt->flags & TEXF_FRAGMENT)
1200         {
1201                 if (x)
1202                         *x = glt->x;
1203                 if (y)
1204                         *y = glt->y;
1205                 if (fx1 || fy1 || fx2 || fy2)
1206                 {
1207                         iwidth = 1.0f / glt->image->width;
1208                         iheight = 1.0f / glt->image->height;
1209                         idepth = 1.0f / glt->image->depth;
1210                         if (fx1)
1211                                 *fx1 = glt->x * iwidth;
1212                         if (fy1)
1213                                 *fy1 = glt->y * iheight;
1214                         if (fz1)
1215                                 *fz1 = glt->z * idepth;
1216                         if (fx2)
1217                                 *fx2 = (glt->x + glt->width) * iwidth;
1218                         if (fy2)
1219                                 *fy2 = (glt->y + glt->height) * iheight;
1220                         if (fz2)
1221                                 *fz2 = (glt->z + glt->depth) * idepth;
1222                 }
1223         }
1224         else
1225         {
1226                 if (x)
1227                         *x = 0;
1228                 if (y)
1229                         *y = 0;
1230                 if (z)
1231                         *z = 0;
1232                 if (fx1 || fy1 || fx2 || fy2)
1233                 {
1234                         if (fx1)
1235                                 *fx1 = 0;
1236                         if (fy1)
1237                                 *fy1 = 0;
1238                         if (fz1)
1239                                 *fz1 = 0;
1240                         if (fx2)
1241                                 *fx2 = 1;
1242                         if (fy2)
1243                                 *fy2 = 1;
1244                         if (fz2)
1245                                 *fz2 = 1;
1246                 }
1247         }
1248 }
1249
1250 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1251 {
1252         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1253 }
1254
1255 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1256 {
1257         return width;
1258 }
1259
1260 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1261 {
1262         gltexture_t *glt;
1263         if (rt == NULL)
1264                 Host_Error("R_UpdateTexture: no texture supplied\n");
1265         if (data == NULL)
1266                 Host_Error("R_UpdateTexture: no data supplied\n");
1267         glt = (gltexture_t *)rt;
1268
1269         // if it has not been uploaded yet, update the data that will be used when it is
1270         if (glt->inputtexels)
1271                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1272         else
1273                 R_Upload(glt, data);
1274 }
1275