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