gl_textures.c

   1
   2 #include "quakedef.h"
   3 #include "image.h"
   4 #include "jpeg.h"
   5 #include "image_png.h"
   6
   7 cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, note: this is automatically reduced to match video card capabilities (such as 256 on 3Dfx cards before Voodoo4/5)"};
   8 cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0", "reduces resolution of textures by powers of 2, for example 1 will halve width/height, reducing texture memory usage by 75%"};
   9 cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1", "bilinear filters images when scaling them up to power of 2 size (mode 1), looks better than glquake (mode 0)"};
  10 cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1", "0 = never upload textures until used, 1 = upload most textures before use (exceptions: rarely used skin colormap layers), 2 = upload all textures before use (can increase texture memory usage significantly)"};
  11 cvar_t gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1", "anisotropic filtering quality (if supported by hardware), 1 sample (no anisotropy) and 8 sample (8 tap anisotropy) are recommended values"};
  12 cvar_t gl_texturecompression = {CVAR_SAVE, "gl_texturecompression", "0", "whether to compress textures, a value of 0 disables compression (even if the individual cvars are 1), 1 enables fast (low quality) compression at startup, 2 enables slow (high quality) compression at startup"};
  13 cvar_t gl_texturecompression_color = {CVAR_SAVE, "gl_texturecompression_color", "1", "whether to compress colormap (diffuse) textures"};
  14 cvar_t gl_texturecompression_normal = {CVAR_SAVE, "gl_texturecompression_normal", "0", "whether to compress normalmap (normalmap) textures"};
  15 cvar_t gl_texturecompression_gloss = {CVAR_SAVE, "gl_texturecompression_gloss", "1", "whether to compress glossmap (specular) textures"};
  16 cvar_t gl_texturecompression_glow = {CVAR_SAVE, "gl_texturecompression_glow", "1", "whether to compress glowmap (luma) textures"};
  17 cvar_t gl_texturecompression_2d = {CVAR_SAVE, "gl_texturecompression_2d", "0", "whether to compress 2d (hud/menu) textures other than the font"};
  18 cvar_t gl_texturecompression_q3bsplightmaps = {CVAR_SAVE, "gl_texturecompression_q3bsplightmaps", "0", "whether to compress lightmaps in q3bsp format levels"};
  19 cvar_t gl_texturecompression_q3bspdeluxemaps = {CVAR_SAVE, "gl_texturecompression_q3bspdeluxemaps", "0", "whether to compress deluxemaps in q3bsp format levels (only levels compiled with q3map2 -deluxe have these)"};
  20 cvar_t gl_texturecompression_sky = {CVAR_SAVE, "gl_texturecompression_sky", "0", "whether to compress sky textures"};
  21 cvar_t gl_texturecompression_lightcubemaps = {CVAR_SAVE, "gl_texturecompression_lightcubemaps", "1", "whether to compress light cubemaps (spotlights and other light projection images)"};
  22
  23 int             gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
  24 int             gl_filter_mag = GL_LINEAR;
  25
  26
  27 static mempool_t *texturemempool;
  28
  29 // note: this must not conflict with TEXF_ flags in r_textures.h
  30 // cleared when a texture is uploaded
  31 #define GLTEXF_UPLOAD           0x00010000
  32 // bitmask for mismatch checking
  33 #define GLTEXF_IMPORTANTBITS (0)
  34 // set when image is uploaded and freed
  35 #define GLTEXF_DESTROYED        0x00040000
  36 // dynamic texture (treat texnum == 0 differently)
  37 #define GLTEXF_DYNAMIC          0x00080000
  38
  39 typedef struct textypeinfo_s
  40 {
  41         textype_t textype;
  42         int inputbytesperpixel;
  43         int internalbytesperpixel;
  44         float glinternalbytesperpixel;
  45         int glformat;
  46         int glinternalformat;
  47         int gltype;
  48 }
  49 textypeinfo_t;
  50
  51 static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 3, GL_UNSIGNED_BYTE};
  52 static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 4, GL_UNSIGNED_BYTE};
  53 static textypeinfo_t textype_palette_compress       = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
  54 static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
  55 static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 3, GL_UNSIGNED_BYTE};
  56 static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 4, GL_UNSIGNED_BYTE};
  57 static textypeinfo_t textype_rgba_compress          = {TEXTYPE_RGBA   , 4, 4, 0.5f, GL_RGBA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
  58 static textypeinfo_t textype_rgba_alpha_compress    = {TEXTYPE_RGBA   , 4, 4, 1.0f, GL_RGBA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
  59 static textypeinfo_t textype_bgra                   = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 3, GL_UNSIGNED_BYTE};
  60 static textypeinfo_t textype_bgra_alpha             = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 4, GL_UNSIGNED_BYTE};
  61 static textypeinfo_t textype_bgra_compress          = {TEXTYPE_BGRA   , 4, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
  62 static textypeinfo_t textype_bgra_alpha_compress    = {TEXTYPE_BGRA   , 4, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
  63 static textypeinfo_t textype_shadowmap              = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
  64 static textypeinfo_t textype_alpha                  = {TEXTYPE_ALPHA  , 1, 4, 4.0f, GL_ALPHA  , 4, GL_UNSIGNED_BYTE};
  65 static textypeinfo_t textype_alpha_compress         = {TEXTYPE_ALPHA  , 1, 4, 1.0f, GL_ALPHA  , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
  66
  67 typedef enum gltexturetype_e
  68 {
  69         GLTEXTURETYPE_1D,
  70         GLTEXTURETYPE_2D,
  71         GLTEXTURETYPE_3D,
  72         GLTEXTURETYPE_CUBEMAP,
  73         GLTEXTURETYPE_RECTANGLE,
  74         GLTEXTURETYPE_TOTAL
  75 }
  76 gltexturetype_t;
  77
  78 static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
  79 static int gltexturetypebindingenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB};
  80 static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {1, 2, 3, 2, 2};
  81 static int cubemapside[6] =
  82 {
  83         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  84         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  85         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  86         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  87         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  88         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  89 };
  90
  91 typedef struct gltexture_s
  92 {
  93         // this field is exposed to the R_GetTexture macro, for speed reasons
  94         // (must be identical in rtexture_t)
  95         int texnum; // GL texture slot number
  96
  97         // dynamic texture stuff [11/22/2007 Black]
  98         // used to hold the texture number of dirty textures
  99         int dirtytexnum;
 100         updatecallback_t updatecallback;
 101         void *updatacallback_data;
 102         // --- [11/22/2007 Black]
 103
 104         // pointer to texturepool (check this to see if the texture is allocated)
 105         struct gltexturepool_s *pool;
 106         // pointer to next texture in texturepool chain
 107         struct gltexture_s *chain;
 108         // name of the texture (this might be removed someday), no duplicates
 109         char identifier[MAX_QPATH + 32];
 110         // original data size in *inputtexels
 111         int inputwidth, inputheight, inputdepth;
 112         // copy of the original texture(s) supplied to the upload function, for
 113         // delayed uploads (non-precached)
 114         unsigned char *inputtexels;
 115         // original data size in *inputtexels
 116         int inputdatasize;
 117         // flags supplied to the LoadTexture function
 118         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 119         int flags;
 120         // pointer to one of the textype_ structs
 121         textypeinfo_t *textype;
 122         // one of the GLTEXTURETYPE_ values
 123         int texturetype;
 124         // palette if the texture is TEXTYPE_PALETTE
 125         const unsigned int *palette;
 126         // actual stored texture size after gl_picmip and gl_max_size are applied
 127         // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
 128         int tilewidth, tileheight, tiledepth;
 129         // 1 or 6 depending on texturetype
 130         int sides;
 131         // bytes per pixel
 132         int bytesperpixel;
 133         // GL_RGB or GL_RGBA or GL_DEPTH_COMPONENT
 134         int glformat;
 135         // 3 or 4
 136         int glinternalformat;
 137         // GL_UNSIGNED_BYTE or GL_UNSIGNED_INT or GL_UNSIGNED_SHORT or GL_FLOAT
 138         int gltype;
 139 }
 140 gltexture_t;
 141
 142 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 143
 144 typedef struct gltexturepool_s
 145 {
 146         unsigned int sentinel;
 147         struct gltexture_s *gltchain;
 148         struct gltexturepool_s *next;
 149 }
 150 gltexturepool_t;
 151
 152 static gltexturepool_t *gltexturepoolchain = NULL;
 153
 154 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 155 static int resizebuffersize = 0;
 156 static const unsigned char *texturebuffer;
 157 static int texturebuffersize = 0;
 158
 159 static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
 160 {
 161         if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
 162         {
 163                 if (flags & TEXF_ALPHA)
 164                 {
 165                         switch(textype)
 166                         {
 167                         case TEXTYPE_PALETTE:
 168                                 return &textype_palette_alpha_compress;
 169                         case TEXTYPE_RGBA:
 170                                 return &textype_rgba_alpha_compress;
 171                         case TEXTYPE_BGRA:
 172                                 return &textype_bgra_alpha_compress;
 173                         case TEXTYPE_ALPHA:
 174                                 return &textype_alpha_compress;
 175                         default:
 176                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 177                                 return NULL;
 178                         }
 179                 }
 180                 else
 181                 {
 182                         switch(textype)
 183                         {
 184                         case TEXTYPE_PALETTE:
 185                                 return &textype_palette_compress;
 186                         case TEXTYPE_RGBA:
 187                                 return &textype_rgba_compress;
 188                         case TEXTYPE_BGRA:
 189                                 return &textype_bgra_compress;
 190                         case TEXTYPE_ALPHA:
 191                                 return &textype_alpha_compress;
 192                         default:
 193                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 194                                 return NULL;
 195                         }
 196                 }
 197         }
 198         else
 199         {
 200                 if (flags & TEXF_ALPHA)
 201                 {
 202                         switch(textype)
 203                         {
 204                         case TEXTYPE_PALETTE:
 205                                 return &textype_palette_alpha;
 206                         case TEXTYPE_RGBA:
 207                                 return &textype_rgba_alpha;
 208                         case TEXTYPE_BGRA:
 209                                 return &textype_bgra_alpha;
 210                         case TEXTYPE_ALPHA:
 211                                 return &textype_alpha;
 212                         default:
 213                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 214                                 return NULL;
 215                         }
 216                 }
 217                 else
 218                 {
 219                         switch(textype)
 220                         {
 221                         case TEXTYPE_PALETTE:
 222                                 return &textype_palette;
 223                         case TEXTYPE_RGBA:
 224                                 return &textype_rgba;
 225                         case TEXTYPE_BGRA:
 226                                 return &textype_bgra;
 227                         case TEXTYPE_SHADOWMAP:
 228                                 return &textype_shadowmap;
 229                         case TEXTYPE_ALPHA:
 230                                 return &textype_alpha;
 231                         default:
 232                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 233                                 return NULL;
 234                         }
 235                 }
 236         }
 237         return NULL; // this line only to hush compiler warnings
 238 }
 239
 240 // dynamic texture code [11/22/2007 Black]
 241 void R_MarkDirtyTexture(rtexture_t *rt) {
 242         gltexture_t *glt = (gltexture_t*) rt;
 243         if( !glt ) {
 244                 return;
 245         }
 246
 247         // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
 248         if( !glt->dirtytexnum && glt->flags & GLTEXF_DYNAMIC ) {
 249                 glt->dirtytexnum = glt->texnum;
 250                 // mark it as dirty, so R_RealGetTexture gets called
 251                 glt->texnum = 0;
 252         }
 253 }
 254
 255 void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
 256         gltexture_t *glt = (gltexture_t*) rt;
 257         if( !glt ) {
 258                 return;
 259         }
 260
 261         glt->flags |= GLTEXF_DYNAMIC;
 262         glt->updatecallback = updatecallback;
 263         glt->updatacallback_data = data;
 264         glt->dirtytexnum = 0;
 265 }
 266
 267 static void R_UpdateDynamicTexture(gltexture_t *glt) {
 268         glt->texnum = glt->dirtytexnum;
 269         // reset dirtytexnum again (not dirty anymore)
 270         glt->dirtytexnum = 0;
 271         // TODO: now assert that t->texnum != 0 ?
 272         if( glt->updatecallback ) {
 273                 glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
 274         }
 275 }
 276
 277 static void R_UploadTexture(gltexture_t *t);
 278
 279 static void R_PrecacheTexture(gltexture_t *glt)
 280 {
 281         int precache;
 282         precache = false;
 283         if (glt->flags & TEXF_ALWAYSPRECACHE)
 284                 precache = true;
 285         else if (r_precachetextures.integer >= 2)
 286                 precache = true;
 287         else if (r_precachetextures.integer >= 1)
 288                 if (glt->flags & TEXF_PRECACHE)
 289                         precache = true;
 290
 291         if (precache)
 292                 R_UploadTexture(glt);
 293 }
 294
 295 int R_RealGetTexture(rtexture_t *rt)
 296 {
 297         if (rt)
 298         {
 299                 gltexture_t *glt;
 300                 glt = (gltexture_t *)rt;
 301                 if (glt->flags & GLTEXF_DYNAMIC)
 302                         R_UpdateDynamicTexture(glt);
 303                 if (glt->flags & GLTEXF_UPLOAD)
 304                         R_UploadTexture(glt);
 305
 306                 return glt->texnum;
 307         }
 308         else
 309                 return 0;
 310 }
 311
 312 void R_PurgeTexture(rtexture_t *rt)
 313 {
 314         if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
 315                 R_FreeTexture(rt);
 316         }
 317 }
 318
 319 void R_FreeTexture(rtexture_t *rt)
 320 {
 321         gltexture_t *glt, **gltpointer;
 322
 323         glt = (gltexture_t *)rt;
 324         if (glt == NULL)
 325                 Host_Error("R_FreeTexture: texture == NULL");
 326
 327         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 328         if (*gltpointer == glt)
 329                 *gltpointer = glt->chain;
 330         else
 331                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 332
 333         if (!(glt->flags & GLTEXF_UPLOAD))
 334         {
 335                 CHECKGLERROR
 336                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 337         }
 338
 339         if (glt->inputtexels)
 340                 Mem_Free(glt->inputtexels);
 341         Mem_Free(glt);
 342 }
 343
 344 rtexturepool_t *R_AllocTexturePool(void)
 345 {
 346         gltexturepool_t *pool;
 347         if (texturemempool == NULL)
 348                 return NULL;
 349         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 350         if (pool == NULL)
 351                 return NULL;
 352         pool->next = gltexturepoolchain;
 353         gltexturepoolchain = pool;
 354         pool->sentinel = TEXTUREPOOL_SENTINEL;
 355         return (rtexturepool_t *)pool;
 356 }
 357
 358 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 359 {
 360         gltexturepool_t *pool, **poolpointer;
 361         if (rtexturepool == NULL)
 362                 return;
 363         if (*rtexturepool == NULL)
 364                 return;
 365         pool = (gltexturepool_t *)(*rtexturepool);
 366         *rtexturepool = NULL;
 367         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 368                 Host_Error("R_FreeTexturePool: pool already freed");
 369         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 370         if (*poolpointer == pool)
 371                 *poolpointer = pool->next;
 372         else
 373                 Host_Error("R_FreeTexturePool: pool not linked");
 374         while (pool->gltchain)
 375                 R_FreeTexture((rtexture_t *)pool->gltchain);
 376         Mem_Free(pool);
 377 }
 378
 379
 380 typedef struct glmode_s
 381 {
 382         char *name;
 383         int minification, magnification;
 384 }
 385 glmode_t;
 386
 387 static glmode_t modes[6] =
 388 {
 389         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 390         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 391         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 392         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 393         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 394         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 395 };
 396
 397 static void GL_TextureMode_f (void)
 398 {
 399         int i;
 400         GLint oldbindtexnum;
 401         gltexture_t *glt;
 402         gltexturepool_t *pool;
 403
 404         if (Cmd_Argc() == 1)
 405         {
 406                 for (i = 0;i < 6;i++)
 407                 {
 408                         if (gl_filter_min == modes[i].minification)
 409                         {
 410                                 Con_Printf("%s\n", modes[i].name);
 411                                 return;
 412                         }
 413                 }
 414                 Con_Print("current filter is unknown???\n");
 415                 return;
 416         }
 417
 418         for (i = 0;i < 6;i++)
 419                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 420                         break;
 421         if (i == 6)
 422         {
 423                 Con_Print("bad filter name\n");
 424                 return;
 425         }
 426
 427         gl_filter_min = modes[i].minification;
 428         gl_filter_mag = modes[i].magnification;
 429
 430         // change all the existing mipmap texture objects
 431         // FIXME: force renderer(/client/something?) restart instead?
 432         CHECKGLERROR
 433         for (pool = gltexturepoolchain;pool;pool = pool->next)
 434         {
 435                 for (glt = pool->gltchain;glt;glt = glt->chain)
 436                 {
 437                         // only update already uploaded images
 438                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 439                         {
 440                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 441                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 442                                 if (glt->flags & TEXF_MIPMAP)
 443                                 {
 444                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 445                                 }
 446                                 else
 447                                 {
 448                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 449                                 }
 450                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 451                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 452                         }
 453                 }
 454         }
 455 }
 456
 457 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 458 {
 459         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 460
 461         if (gl_max_size.integer > gl_max_texture_size)
 462                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 463
 464         switch (texturetype)
 465         {
 466         default:
 467         case GLTEXTURETYPE_1D:
 468         case GLTEXTURETYPE_2D:
 469                 maxsize = gl_max_texture_size;
 470                 break;
 471         case GLTEXTURETYPE_3D:
 472                 maxsize = gl_max_3d_texture_size;
 473                 break;
 474         case GLTEXTURETYPE_CUBEMAP:
 475                 maxsize = gl_max_cube_map_texture_size;
 476                 break;
 477         }
 478
 479         if (flags & TEXF_PICMIP)
 480         {
 481                 maxsize = min(maxsize, gl_max_size.integer);
 482                 picmip = gl_picmip.integer;
 483         }
 484
 485         if (outwidth)
 486         {
 487                 if (gl_support_arb_texture_non_power_of_two)
 488                         width2 = min(inwidth >> picmip, maxsize);
 489                 else
 490                 {
 491                         for (width2 = 1;width2 < inwidth;width2 <<= 1);
 492                         for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 493                 }
 494                 *outwidth = max(1, width2);
 495         }
 496         if (outheight)
 497         {
 498                 if (gl_support_arb_texture_non_power_of_two)
 499                         height2 = min(inheight >> picmip, maxsize);
 500                 else
 501                 {
 502                         for (height2 = 1;height2 < inheight;height2 <<= 1);
 503                         for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 504                 }
 505                 *outheight = max(1, height2);
 506         }
 507         if (outdepth)
 508         {
 509                 if (gl_support_arb_texture_non_power_of_two)
 510                         depth2 = min(indepth >> picmip, maxsize);
 511                 else
 512                 {
 513                         for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 514                         for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 515                 }
 516                 *outdepth = max(1, depth2);
 517         }
 518 }
 519
 520
 521 static int R_CalcTexelDataSize (gltexture_t *glt)
 522 {
 523         int width2, height2, depth2, size;
 524
 525         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 526
 527         size = width2 * height2 * depth2;
 528
 529         if (glt->flags & TEXF_MIPMAP)
 530         {
 531                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 532                 {
 533                         if (width2 > 1)
 534                                 width2 >>= 1;
 535                         if (height2 > 1)
 536                                 height2 >>= 1;
 537                         if (depth2 > 1)
 538                                 depth2 >>= 1;
 539                         size += width2 * height2 * depth2;
 540                 }
 541         }
 542
 543         return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 544 }
 545
 546 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 547 {
 548         int glsize;
 549         int isloaded;
 550         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 551         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 552         gltexture_t *glt;
 553         gltexturepool_t *pool;
 554         if (printeach)
 555                 Con_Print("glsize input loaded mip alpha name\n");
 556         for (pool = gltexturepoolchain;pool;pool = pool->next)
 557         {
 558                 pooltotal = 0;
 559                 pooltotalt = 0;
 560                 pooltotalp = 0;
 561                 poolloaded = 0;
 562                 poolloadedt = 0;
 563                 poolloadedp = 0;
 564                 for (glt = pool->gltchain;glt;glt = glt->chain)
 565                 {
 566                         glsize = R_CalcTexelDataSize(glt);
 567                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 568                         pooltotal++;
 569                         pooltotalt += glsize;
 570                         pooltotalp += glt->inputdatasize;
 571                         if (isloaded)
 572                         {
 573                                 poolloaded++;
 574                                 poolloadedt += glsize;
 575                                 poolloadedp += glt->inputdatasize;
 576                         }
 577                         if (printeach)
 578                                 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);
 579                 }
 580                 if (printpool)
 581                         Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", (void *)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);
 582                 sumtotal += pooltotal;
 583                 sumtotalt += pooltotalt;
 584                 sumtotalp += pooltotalp;
 585                 sumloaded += poolloaded;
 586                 sumloadedt += poolloadedt;
 587                 sumloadedp += poolloadedp;
 588         }
 589         if (printtotal)
 590                 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);
 591 }
 592
 593 static void R_TextureStats_f(void)
 594 {
 595         R_TextureStats_Print(true, true, true);
 596 }
 597
 598 static void r_textures_start(void)
 599 {
 600         // LordHavoc: allow any alignment
 601         CHECKGLERROR
 602         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 603         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 604
 605         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 606
 607         // Disable JPEG screenshots if the DLL isn't loaded
 608         if (! JPEG_OpenLibrary ())
 609                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 610         // TODO: support png screenshots?
 611         PNG_OpenLibrary ();
 612 }
 613
 614 static void r_textures_shutdown(void)
 615 {
 616         rtexturepool_t *temp;
 617
 618         JPEG_CloseLibrary ();
 619
 620         while(gltexturepoolchain)
 621         {
 622                 temp = (rtexturepool_t *) gltexturepoolchain;
 623                 R_FreeTexturePool(&temp);
 624         }
 625
 626         resizebuffersize = 0;
 627         texturebuffersize = 0;
 628         resizebuffer = NULL;
 629         colorconvertbuffer = NULL;
 630         texturebuffer = NULL;
 631         Mem_FreePool(&texturemempool);
 632 }
 633
 634 static void r_textures_newmap(void)
 635 {
 636 }
 637
 638 void R_Textures_Init (void)
 639 {
 640         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 641         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 642         Cvar_RegisterVariable (&gl_max_size);
 643         Cvar_RegisterVariable (&gl_picmip);
 644         Cvar_RegisterVariable (&r_lerpimages);
 645         Cvar_RegisterVariable (&r_precachetextures);
 646         Cvar_RegisterVariable (&gl_texture_anisotropy);
 647         Cvar_RegisterVariable (&gl_texturecompression);
 648         Cvar_RegisterVariable (&gl_texturecompression_color);
 649         Cvar_RegisterVariable (&gl_texturecompression_normal);
 650         Cvar_RegisterVariable (&gl_texturecompression_gloss);
 651         Cvar_RegisterVariable (&gl_texturecompression_glow);
 652         Cvar_RegisterVariable (&gl_texturecompression_2d);
 653         Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
 654         Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
 655         Cvar_RegisterVariable (&gl_texturecompression_sky);
 656         Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
 657
 658         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 659 }
 660
 661 void R_Textures_Frame (void)
 662 {
 663         static int old_aniso = 0;
 664
 665         // could do procedural texture animation here, if we keep track of which
 666         // textures were accessed this frame...
 667
 668         // free the resize buffers
 669         resizebuffersize = 0;
 670         if (resizebuffer)
 671         {
 672                 Mem_Free(resizebuffer);
 673                 resizebuffer = NULL;
 674         }
 675         if (colorconvertbuffer)
 676         {
 677                 Mem_Free(colorconvertbuffer);
 678                 colorconvertbuffer = NULL;
 679         }
 680
 681         if (old_aniso != gl_texture_anisotropy.integer)
 682         {
 683                 gltexture_t *glt;
 684                 gltexturepool_t *pool;
 685                 GLint oldbindtexnum;
 686
 687                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 688
 689                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 690
 691                 CHECKGLERROR
 692                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 693                 {
 694                         for (glt = pool->gltchain;glt;glt = glt->chain)
 695                         {
 696                                 // only update already uploaded images
 697                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 698                                 {
 699                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 700
 701                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 702                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 703
 704                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 705                                 }
 706                         }
 707                 }
 708         }
 709 }
 710
 711 void R_MakeResizeBufferBigger(int size)
 712 {
 713         if (resizebuffersize < size)
 714         {
 715                 resizebuffersize = size;
 716                 if (resizebuffer)
 717                         Mem_Free(resizebuffer);
 718                 if (colorconvertbuffer)
 719                         Mem_Free(colorconvertbuffer);
 720                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 721                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 722                 if (!resizebuffer || !colorconvertbuffer)
 723                         Host_Error("R_Upload: out of memory");
 724         }
 725 }
 726
 727 static void GL_SetupTextureParameters(int flags, textype_t textype, int texturetype)
 728 {
 729         int textureenum = gltexturetypeenums[texturetype];
 730         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 731
 732         CHECKGLERROR
 733
 734         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 735         {
 736                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 737                 if (gl_texture_anisotropy.integer != aniso)
 738                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 739                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 740         }
 741         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 742         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 743         if (gltexturetypedimensions[texturetype] >= 3)
 744         {
 745                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 746         }
 747
 748         CHECKGLERROR
 749         if (flags & TEXF_FORCENEAREST)
 750         {
 751                 if (flags & TEXF_MIPMAP)
 752                 {
 753                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 754                 }
 755                 else
 756                 {
 757                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 758                 }
 759                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 760         }
 761         else if (flags & TEXF_FORCELINEAR)
 762         {
 763                 if (flags & TEXF_MIPMAP)
 764                 {
 765                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 766                         {
 767                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 768                         }
 769                         else
 770                         {
 771                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 772                         }
 773                 }
 774                 else
 775                 {
 776                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 777                 }
 778                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 779         }
 780         else
 781         {
 782                 if (flags & TEXF_MIPMAP)
 783                 {
 784                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 785                 }
 786                 else
 787                 {
 788                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 789                 }
 790                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 791         }
 792
 793         if (textype == TEXTYPE_SHADOWMAP)
 794         {
 795                 if (gl_support_arb_shadow)
 796                 {
 797                         if (flags & TEXF_COMPARE)
 798                         {
 799                                 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
 800                         }
 801                         else
 802                         {
 803                                 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
 804                         }
 805                         qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
 806                 }
 807                 qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);CHECKGLERROR
 808         }
 809
 810         CHECKGLERROR
 811 }
 812
 813 static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 814 {
 815         int i, mip, width, height, depth;
 816         GLint oldbindtexnum;
 817         const unsigned char *prevbuffer;
 818         prevbuffer = data;
 819
 820         CHECKGLERROR
 821
 822         // we need to restore the texture binding after finishing the upload
 823         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 824         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 825
 826         // these are rounded up versions of the size to do better resampling
 827         if (gl_support_arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
 828         {
 829                 width = glt->inputwidth;
 830                 height = glt->inputheight;
 831                 depth = glt->inputdepth;
 832         }
 833         else
 834         {
 835                 for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 836                 for (height = 1;height < glt->inputheight;height <<= 1);
 837                 for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 838         }
 839
 840         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 841         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 842
 843         if (prevbuffer == NULL)
 844         {
 845                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 846                 prevbuffer = resizebuffer;
 847         }
 848         else if (glt->textype->textype == TEXTYPE_PALETTE)
 849         {
 850                 // promote paletted to BGRA, so we only have to worry about BGRA in the rest of this code
 851                 Image_Copy8bitBGRA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 852                 prevbuffer = colorconvertbuffer;
 853         }
 854
 855         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 856         {
 857                 // update a portion of the image
 858                 switch(glt->texturetype)
 859                 {
 860                 case GLTEXTURETYPE_1D:
 861                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 862                         break;
 863                 case GLTEXTURETYPE_2D:
 864                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 865                         break;
 866                 case GLTEXTURETYPE_3D:
 867                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 868                         break;
 869                 default:
 870                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 871                         break;
 872                 }
 873         }
 874         else
 875         {
 876                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 877                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 878
 879                 // upload the image for the first time
 880                 glt->flags &= ~GLTEXF_UPLOAD;
 881
 882                 // cubemaps contain multiple images and thus get processed a bit differently
 883                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 884                 {
 885                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 886                         {
 887                                 Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 888                                 prevbuffer = resizebuffer;
 889                         }
 890                         // picmip/max_size
 891                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 892                         {
 893                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 894                                 prevbuffer = resizebuffer;
 895                         }
 896                 }
 897                 mip = 0;
 898                 if (gl_support_texture_compression)
 899                 {
 900                         if (gl_texturecompression.integer >= 2)
 901                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
 902                         else
 903                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
 904                         CHECKGLERROR
 905                 }
 906                 switch(glt->texturetype)
 907                 {
 908                 case GLTEXTURETYPE_1D:
 909                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 910                         if (glt->flags & TEXF_MIPMAP)
 911                         {
 912                                 while (width > 1 || height > 1 || depth > 1)
 913                                 {
 914                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 915                                         prevbuffer = resizebuffer;
 916                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 917                                 }
 918                         }
 919                         break;
 920                 case GLTEXTURETYPE_2D:
 921                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 922                         if (glt->flags & TEXF_MIPMAP)
 923                         {
 924                                 while (width > 1 || height > 1 || depth > 1)
 925                                 {
 926                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 927                                         prevbuffer = resizebuffer;
 928                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 929                                 }
 930                         }
 931                         break;
 932                 case GLTEXTURETYPE_3D:
 933                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 934                         if (glt->flags & TEXF_MIPMAP)
 935                         {
 936                                 while (width > 1 || height > 1 || depth > 1)
 937                                 {
 938                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 939                                         prevbuffer = resizebuffer;
 940                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 941                                 }
 942                         }
 943                         break;
 944                 case GLTEXTURETYPE_CUBEMAP:
 945                         // convert and upload each side in turn,
 946                         // from a continuous block of input texels
 947                         texturebuffer = (unsigned char *)prevbuffer;
 948                         for (i = 0;i < 6;i++)
 949                         {
 950                                 prevbuffer = texturebuffer;
 951                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 952                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 953                                 {
 954                                         Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 955                                         prevbuffer = resizebuffer;
 956                                 }
 957                                 // picmip/max_size
 958                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 959                                 {
 960                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 961                                         prevbuffer = resizebuffer;
 962                                 }
 963                                 mip = 0;
 964                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 965                                 if (glt->flags & TEXF_MIPMAP)
 966                                 {
 967                                         while (width > 1 || height > 1 || depth > 1)
 968                                         {
 969                                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 970                                                 prevbuffer = resizebuffer;
 971                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 972                                         }
 973                                 }
 974                         }
 975                         break;
 976                 case GLTEXTURETYPE_RECTANGLE:
 977                         qglTexImage2D(GL_TEXTURE_RECTANGLE_ARB, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, NULL);CHECKGLERROR
 978                         break;
 979                 }
 980                 GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
 981         }
 982         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 983 }
 984
 985 static void R_UploadTexture (gltexture_t *glt)
 986 {
 987         if (!(glt->flags & GLTEXF_UPLOAD))
 988                 return;
 989
 990         CHECKGLERROR
 991         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 992         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 993         if (glt->inputtexels)
 994         {
 995                 Mem_Free(glt->inputtexels);
 996                 glt->inputtexels = NULL;
 997                 glt->flags |= GLTEXF_DESTROYED;
 998         }
 999         else if (glt->flags & GLTEXF_DESTROYED)
1000                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
1001 }
1002
1003 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, textype_t textype, int texturetype, const unsigned char *data, const unsigned int *palette)
1004 {
1005         int i, size;
1006         gltexture_t *glt;
1007         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1008         textypeinfo_t *texinfo;
1009
1010         if (cls.state == ca_dedicated)
1011                 return NULL;
1012
1013         if (texturetype == GLTEXTURETYPE_RECTANGLE && !gl_texturerectangle)
1014         {
1015                 Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
1016                 return NULL;
1017         }
1018         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
1019         {
1020                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
1021                 return NULL;
1022         }
1023         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
1024         {
1025                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
1026                 return NULL;
1027         }
1028
1029         texinfo = R_GetTexTypeInfo(textype, flags);
1030         size = width * height * depth * sides * texinfo->inputbytesperpixel;
1031         if (size < 1)
1032         {
1033                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
1034                 return NULL;
1035         }
1036
1037         // clear the alpha flag if the texture has no transparent pixels
1038         switch(textype)
1039         {
1040         case TEXTYPE_PALETTE:
1041                 if (flags & TEXF_ALPHA)
1042                 {
1043                         flags &= ~TEXF_ALPHA;
1044                         if (data)
1045                         {
1046                                 for (i = 0;i < size;i++)
1047                                 {
1048                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
1049                                         {
1050                                                 flags |= TEXF_ALPHA;
1051                                                 break;
1052                                         }
1053                                 }
1054                         }
1055                 }
1056                 break;
1057         case TEXTYPE_RGBA:
1058         case TEXTYPE_BGRA:
1059                 if (flags & TEXF_ALPHA)
1060                 {
1061                         flags &= ~TEXF_ALPHA;
1062                         if (data)
1063                         {
1064                                 for (i = 3;i < size;i += 4)
1065                                 {
1066                                         if (data[i] < 255)
1067                                         {
1068                                                 flags |= TEXF_ALPHA;
1069                                                 break;
1070                                         }
1071                                 }
1072                         }
1073                 }
1074                 break;
1075         case TEXTYPE_SHADOWMAP:
1076                 break;
1077         case TEXTYPE_ALPHA:
1078                 flags |= TEXF_ALPHA;
1079                 break;
1080         default:
1081                 Host_Error("R_LoadTexture: unknown texture type");
1082         }
1083
1084         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
1085         if (identifier)
1086                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
1087         glt->pool = pool;
1088         glt->chain = pool->gltchain;
1089         pool->gltchain = glt;
1090         glt->inputwidth = width;
1091         glt->inputheight = height;
1092         glt->inputdepth = depth;
1093         glt->flags = flags | GLTEXF_UPLOAD;
1094         glt->textype = texinfo;
1095         glt->texturetype = texturetype;
1096         glt->inputdatasize = size;
1097         glt->palette = palette;
1098         glt->glinternalformat = texinfo->glinternalformat;
1099         glt->glformat = texinfo->glformat;
1100         glt->gltype = texinfo->gltype;
1101         glt->bytesperpixel = texinfo->internalbytesperpixel;
1102         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
1103         glt->texnum = 0;
1104         // init the dynamic texture attributes, too [11/22/2007 Black]
1105         glt->dirtytexnum = 0;
1106         glt->updatecallback = NULL;
1107         glt->updatacallback_data = NULL;
1108
1109         if (data)
1110         {
1111                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1112                 memcpy(glt->inputtexels, data, size);
1113         }
1114         else
1115                 glt->inputtexels = NULL;
1116
1117         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1118         R_PrecacheTexture(glt);
1119
1120         // texture converting and uploading can take a while, so make sure we're sending keepalives
1121         CL_KeepaliveMessage(false);
1122
1123         return (rtexture_t *)glt;
1124 }
1125
1126 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1127 {
1128         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1129 }
1130
1131 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1132 {
1133         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1134 }
1135
1136 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1137 {
1138         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1139 }
1140
1141 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1142 {
1143         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1144 }
1145
1146 rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter)
1147 {
1148         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
1149 }
1150
1151 rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter)
1152 {
1153         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_2D, NULL, NULL);
1154 }
1155
1156 rtexture_t *R_LoadTextureShadowMapCube(rtexturepool_t *rtexturepool, const char *identifier, int width, qboolean filter)
1157 {
1158     return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
1159 }
1160
1161 int R_TextureHasAlpha(rtexture_t *rt)
1162 {
1163         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1164 }
1165
1166 int R_TextureWidth(rtexture_t *rt)
1167 {
1168         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1169 }
1170
1171 int R_TextureHeight(rtexture_t *rt)
1172 {
1173         return rt ? ((gltexture_t *)rt)->inputheight : 0;
1174 }
1175
1176 void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height)
1177 {
1178         gltexture_t *glt;
1179         if (rt == NULL)
1180                 Host_Error("R_UpdateTexture: no texture supplied");
1181         if (data == NULL)
1182                 Host_Error("R_UpdateTexture: no data supplied");
1183         glt = (gltexture_t *)rt;
1184
1185         // we need it to be uploaded before we can update a part of it
1186         if (glt->flags & GLTEXF_UPLOAD)
1187                 R_UploadTexture(glt);
1188
1189         // update part of the texture
1190         R_Upload(glt, data, x, y, 0, width, height, 1);
1191 }
1192
1193 void R_ClearTexture (rtexture_t *rt)
1194 {
1195         gltexture_t *glt = (gltexture_t *)rt;
1196
1197         R_Upload( glt, NULL, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth );
1198 }