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