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_shadowmap16            = {TEXTYPE_SHADOWMAP,2,2, 2.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16_ARB, GL_UNSIGNED_SHORT};
  64 static textypeinfo_t textype_shadowmap24            = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
  65
  66 typedef enum gltexturetype_e
  67 {
  68         GLTEXTURETYPE_1D,
  69         GLTEXTURETYPE_2D,
  70         GLTEXTURETYPE_3D,
  71         GLTEXTURETYPE_CUBEMAP,
  72         GLTEXTURETYPE_RECTANGLE,
  73         GLTEXTURETYPE_TOTAL
  74 }
  75 gltexturetype_t;
  76
  77 static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
  78 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};
  79 static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {1, 2, 3, 2, 2};
  80 static int cubemapside[6] =
  81 {
  82         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  83         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  84         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  85         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  86         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  87         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  88 };
  89
  90 typedef struct gltexture_s
  91 {
  92         // this field is exposed to the R_GetTexture macro, for speed reasons
  93         // (must be identical in rtexture_t)
  94         int texnum; // GL texture slot number
  95
  96         // dynamic texture stuff [11/22/2007 Black]
  97         // used to hold the texture number of dirty textures
  98         int dirtytexnum;
  99         updatecallback_t updatecallback;
 100         void *updatacallback_data;
 101         // --- [11/22/2007 Black]
 102
 103         // pointer to texturepool (check this to see if the texture is allocated)
 104         struct gltexturepool_s *pool;
 105         // pointer to next texture in texturepool chain
 106         struct gltexture_s *chain;
 107         // name of the texture (this might be removed someday), no duplicates
 108         char identifier[MAX_QPATH + 32];
 109         // original data size in *inputtexels
 110         int inputwidth, inputheight, inputdepth;
 111         // copy of the original texture(s) supplied to the upload function, for
 112         // delayed uploads (non-precached)
 113         unsigned char *inputtexels;
 114         // original data size in *inputtexels
 115         int inputdatasize;
 116         // flags supplied to the LoadTexture function
 117         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 118         int flags;
 119         // pointer to one of the textype_ structs
 120         textypeinfo_t *textype;
 121         // one of the GLTEXTURETYPE_ values
 122         int texturetype;
 123         // palette if the texture is TEXTYPE_PALETTE
 124         const unsigned int *palette;
 125         // actual stored texture size after gl_picmip and gl_max_size are applied
 126         // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
 127         int tilewidth, tileheight, tiledepth;
 128         // 1 or 6 depending on texturetype
 129         int sides;
 130         // bytes per pixel
 131         int bytesperpixel;
 132         // GL_RGB or GL_RGBA or GL_DEPTH_COMPONENT
 133         int glformat;
 134         // 3 or 4
 135         int glinternalformat;
 136         // GL_UNSIGNED_BYTE or GL_UNSIGNED_INT or GL_UNSIGNED_SHORT or GL_FLOAT
 137         int gltype;
 138 }
 139 gltexture_t;
 140
 141 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 142
 143 typedef struct gltexturepool_s
 144 {
 145         unsigned int sentinel;
 146         struct gltexture_s *gltchain;
 147         struct gltexturepool_s *next;
 148 }
 149 gltexturepool_t;
 150
 151 static gltexturepool_t *gltexturepoolchain = NULL;
 152
 153 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 154 static int resizebuffersize = 0;
 155 static const unsigned char *texturebuffer;
 156 static int texturebuffersize = 0;
 157
 158 static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
 159 {
 160         if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
 161         {
 162                 if (flags & TEXF_ALPHA)
 163                 {
 164                         switch(textype)
 165                         {
 166                         case TEXTYPE_PALETTE:
 167                                 return &textype_palette_alpha_compress;
 168                         case TEXTYPE_RGBA:
 169                                 return &textype_rgba_alpha_compress;
 170                         case TEXTYPE_BGRA:
 171                                 return &textype_bgra_alpha_compress;
 172                         default:
 173                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 174                                 return NULL;
 175                         }
 176                 }
 177                 else
 178                 {
 179                         switch(textype)
 180                         {
 181                         case TEXTYPE_PALETTE:
 182                                 return &textype_palette_compress;
 183                         case TEXTYPE_RGBA:
 184                                 return &textype_rgba_compress;
 185                         case TEXTYPE_BGRA:
 186                                 return &textype_bgra_compress;
 187                         default:
 188                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 189                                 return NULL;
 190                         }
 191                 }
 192         }
 193         else
 194         {
 195                 if (flags & TEXF_ALPHA)
 196                 {
 197                         switch(textype)
 198                         {
 199                         case TEXTYPE_PALETTE:
 200                                 return &textype_palette_alpha;
 201                         case TEXTYPE_RGBA:
 202                                 return &textype_rgba_alpha;
 203                         case TEXTYPE_BGRA:
 204                                 return &textype_bgra_alpha;
 205                         default:
 206                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 207                                 return NULL;
 208                         }
 209                 }
 210                 else
 211                 {
 212                         switch(textype)
 213                         {
 214                         case TEXTYPE_PALETTE:
 215                                 return &textype_palette;
 216                         case TEXTYPE_RGBA:
 217                                 return &textype_rgba;
 218                         case TEXTYPE_BGRA:
 219                                 return &textype_bgra;
 220                         case TEXTYPE_SHADOWMAP:
 221                                 return (flags & TEXF_LOWPRECISION) ? &textype_shadowmap16 : &textype_shadowmap24;
 222                         default:
 223                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 224                                 return NULL;
 225                         }
 226                 }
 227         }
 228         return NULL; // this line only to hush compiler warnings
 229 }
 230
 231 // dynamic texture code [11/22/2007 Black]
 232 void R_MarkDirtyTexture(rtexture_t *rt) {
 233         gltexture_t *glt = (gltexture_t*) rt;
 234         if( !glt ) {
 235                 return;
 236         }
 237
 238         // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
 239         if( !glt->dirtytexnum && glt->flags & GLTEXF_DYNAMIC ) {
 240                 glt->dirtytexnum = glt->texnum;
 241                 // mark it as dirty, so R_RealGetTexture gets called
 242                 glt->texnum = 0;
 243         }
 244 }
 245
 246 void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
 247         gltexture_t *glt = (gltexture_t*) rt;
 248         if( !glt ) {
 249                 return;
 250         }
 251
 252         glt->flags |= GLTEXF_DYNAMIC;
 253         glt->updatecallback = updatecallback;
 254         glt->updatacallback_data = data;
 255         glt->dirtytexnum = 0;
 256 }
 257
 258 static void R_UpdateDynamicTexture(gltexture_t *glt) {
 259         glt->texnum = glt->dirtytexnum;
 260         // reset dirtytexnum again (not dirty anymore)
 261         glt->dirtytexnum = 0;
 262         // TODO: now assert that t->texnum != 0 ?
 263         if( glt->updatecallback ) {
 264                 glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
 265         }
 266 }
 267
 268 void R_PurgeTexture(rtexture_t *rt)
 269 {
 270         if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
 271                 R_FreeTexture(rt);
 272         }
 273 }
 274
 275 void R_FreeTexture(rtexture_t *rt)
 276 {
 277         gltexture_t *glt, **gltpointer;
 278
 279         glt = (gltexture_t *)rt;
 280         if (glt == NULL)
 281                 Host_Error("R_FreeTexture: texture == NULL");
 282
 283         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 284         if (*gltpointer == glt)
 285                 *gltpointer = glt->chain;
 286         else
 287                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 288
 289         if (!(glt->flags & GLTEXF_UPLOAD))
 290         {
 291                 CHECKGLERROR
 292                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 293         }
 294
 295         if (glt->inputtexels)
 296                 Mem_Free(glt->inputtexels);
 297         Mem_Free(glt);
 298 }
 299
 300 rtexturepool_t *R_AllocTexturePool(void)
 301 {
 302         gltexturepool_t *pool;
 303         if (texturemempool == NULL)
 304                 return NULL;
 305         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 306         if (pool == NULL)
 307                 return NULL;
 308         pool->next = gltexturepoolchain;
 309         gltexturepoolchain = pool;
 310         pool->sentinel = TEXTUREPOOL_SENTINEL;
 311         return (rtexturepool_t *)pool;
 312 }
 313
 314 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 315 {
 316         gltexturepool_t *pool, **poolpointer;
 317         if (rtexturepool == NULL)
 318                 return;
 319         if (*rtexturepool == NULL)
 320                 return;
 321         pool = (gltexturepool_t *)(*rtexturepool);
 322         *rtexturepool = NULL;
 323         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 324                 Host_Error("R_FreeTexturePool: pool already freed");
 325         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 326         if (*poolpointer == pool)
 327                 *poolpointer = pool->next;
 328         else
 329                 Host_Error("R_FreeTexturePool: pool not linked");
 330         while (pool->gltchain)
 331                 R_FreeTexture((rtexture_t *)pool->gltchain);
 332         Mem_Free(pool);
 333 }
 334
 335
 336 typedef struct glmode_s
 337 {
 338         char *name;
 339         int minification, magnification;
 340 }
 341 glmode_t;
 342
 343 static glmode_t modes[6] =
 344 {
 345         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 346         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 347         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 348         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 349         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 350         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 351 };
 352
 353 static void GL_TextureMode_f (void)
 354 {
 355         int i;
 356         GLint oldbindtexnum;
 357         gltexture_t *glt;
 358         gltexturepool_t *pool;
 359
 360         if (Cmd_Argc() == 1)
 361         {
 362                 for (i = 0;i < 6;i++)
 363                 {
 364                         if (gl_filter_min == modes[i].minification)
 365                         {
 366                                 Con_Printf("%s\n", modes[i].name);
 367                                 return;
 368                         }
 369                 }
 370                 Con_Print("current filter is unknown???\n");
 371                 return;
 372         }
 373
 374         for (i = 0;i < 6;i++)
 375                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 376                         break;
 377         if (i == 6)
 378         {
 379                 Con_Print("bad filter name\n");
 380                 return;
 381         }
 382
 383         gl_filter_min = modes[i].minification;
 384         gl_filter_mag = modes[i].magnification;
 385
 386         // change all the existing mipmap texture objects
 387         // FIXME: force renderer(/client/something?) restart instead?
 388         CHECKGLERROR
 389         for (pool = gltexturepoolchain;pool;pool = pool->next)
 390         {
 391                 for (glt = pool->gltchain;glt;glt = glt->chain)
 392                 {
 393                         // only update already uploaded images
 394                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 395                         {
 396                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 397                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 398                                 if (glt->flags & TEXF_MIPMAP)
 399                                 {
 400                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 401                                 }
 402                                 else
 403                                 {
 404                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 405                                 }
 406                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 407                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 408                         }
 409                 }
 410         }
 411 }
 412
 413 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 414 {
 415         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 416
 417         if (gl_max_size.integer > gl_max_texture_size)
 418                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 419
 420         switch (texturetype)
 421         {
 422         default:
 423         case GLTEXTURETYPE_1D:
 424         case GLTEXTURETYPE_2D:
 425                 maxsize = gl_max_texture_size;
 426                 break;
 427         case GLTEXTURETYPE_3D:
 428                 maxsize = gl_max_3d_texture_size;
 429                 break;
 430         case GLTEXTURETYPE_CUBEMAP:
 431                 maxsize = gl_max_cube_map_texture_size;
 432                 break;
 433         }
 434
 435         if (flags & TEXF_PICMIP)
 436         {
 437                 maxsize = min(maxsize, gl_max_size.integer);
 438                 picmip = gl_picmip.integer;
 439         }
 440
 441         if (outwidth)
 442         {
 443                 if (gl_support_arb_texture_non_power_of_two)
 444                         width2 = min(inwidth >> picmip, maxsize);
 445                 else
 446                 {
 447                         for (width2 = 1;width2 < inwidth;width2 <<= 1);
 448                         for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 449                 }
 450                 *outwidth = max(1, width2);
 451         }
 452         if (outheight)
 453         {
 454                 if (gl_support_arb_texture_non_power_of_two)
 455                         height2 = min(inheight >> picmip, maxsize);
 456                 else
 457                 {
 458                         for (height2 = 1;height2 < inheight;height2 <<= 1);
 459                         for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 460                 }
 461                 *outheight = max(1, height2);
 462         }
 463         if (outdepth)
 464         {
 465                 if (gl_support_arb_texture_non_power_of_two)
 466                         depth2 = min(indepth >> picmip, maxsize);
 467                 else
 468                 {
 469                         for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 470                         for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 471                 }
 472                 *outdepth = max(1, depth2);
 473         }
 474 }
 475
 476
 477 static int R_CalcTexelDataSize (gltexture_t *glt)
 478 {
 479         int width2, height2, depth2, size;
 480
 481         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 482
 483         size = width2 * height2 * depth2;
 484
 485         if (glt->flags & TEXF_MIPMAP)
 486         {
 487                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 488                 {
 489                         if (width2 > 1)
 490                                 width2 >>= 1;
 491                         if (height2 > 1)
 492                                 height2 >>= 1;
 493                         if (depth2 > 1)
 494                                 depth2 >>= 1;
 495                         size += width2 * height2 * depth2;
 496                 }
 497         }
 498
 499         return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 500 }
 501
 502 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 503 {
 504         int glsize;
 505         int isloaded;
 506         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 507         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 508         gltexture_t *glt;
 509         gltexturepool_t *pool;
 510         if (printeach)
 511                 Con_Print("glsize input loaded mip alpha name\n");
 512         for (pool = gltexturepoolchain;pool;pool = pool->next)
 513         {
 514                 pooltotal = 0;
 515                 pooltotalt = 0;
 516                 pooltotalp = 0;
 517                 poolloaded = 0;
 518                 poolloadedt = 0;
 519                 poolloadedp = 0;
 520                 for (glt = pool->gltchain;glt;glt = glt->chain)
 521                 {
 522                         glsize = R_CalcTexelDataSize(glt);
 523                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 524                         pooltotal++;
 525                         pooltotalt += glsize;
 526                         pooltotalp += glt->inputdatasize;
 527                         if (isloaded)
 528                         {
 529                                 poolloaded++;
 530                                 poolloadedt += glsize;
 531                                 poolloadedp += glt->inputdatasize;
 532                         }
 533                         if (printeach)
 534                                 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);
 535                 }
 536                 if (printpool)
 537                         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);
 538                 sumtotal += pooltotal;
 539                 sumtotalt += pooltotalt;
 540                 sumtotalp += pooltotalp;
 541                 sumloaded += poolloaded;
 542                 sumloadedt += poolloadedt;
 543                 sumloadedp += poolloadedp;
 544         }
 545         if (printtotal)
 546                 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);
 547 }
 548
 549 static void R_TextureStats_f(void)
 550 {
 551         R_TextureStats_Print(true, true, true);
 552 }
 553
 554 static void r_textures_start(void)
 555 {
 556         // LordHavoc: allow any alignment
 557         CHECKGLERROR
 558         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 559         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 560
 561         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 562
 563         // Disable JPEG screenshots if the DLL isn't loaded
 564         if (! JPEG_OpenLibrary ())
 565                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 566         // TODO: support png screenshots?
 567         PNG_OpenLibrary ();
 568 }
 569
 570 static void r_textures_shutdown(void)
 571 {
 572         rtexturepool_t *temp;
 573
 574         JPEG_CloseLibrary ();
 575
 576         while(gltexturepoolchain)
 577         {
 578                 temp = (rtexturepool_t *) gltexturepoolchain;
 579                 R_FreeTexturePool(&temp);
 580         }
 581
 582         resizebuffersize = 0;
 583         texturebuffersize = 0;
 584         resizebuffer = NULL;
 585         colorconvertbuffer = NULL;
 586         texturebuffer = NULL;
 587         Mem_FreePool(&texturemempool);
 588 }
 589
 590 static void r_textures_newmap(void)
 591 {
 592 }
 593
 594 void R_Textures_Init (void)
 595 {
 596         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 597         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 598         Cvar_RegisterVariable (&gl_max_size);
 599         Cvar_RegisterVariable (&gl_picmip);
 600         Cvar_RegisterVariable (&r_lerpimages);
 601         Cvar_RegisterVariable (&r_precachetextures);
 602         Cvar_RegisterVariable (&gl_texture_anisotropy);
 603         Cvar_RegisterVariable (&gl_texturecompression);
 604         Cvar_RegisterVariable (&gl_texturecompression_color);
 605         Cvar_RegisterVariable (&gl_texturecompression_normal);
 606         Cvar_RegisterVariable (&gl_texturecompression_gloss);
 607         Cvar_RegisterVariable (&gl_texturecompression_glow);
 608         Cvar_RegisterVariable (&gl_texturecompression_2d);
 609         Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
 610         Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
 611         Cvar_RegisterVariable (&gl_texturecompression_sky);
 612         Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
 613
 614         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 615 }
 616
 617 void R_Textures_Frame (void)
 618 {
 619         static int old_aniso = 0;
 620
 621         // could do procedural texture animation here, if we keep track of which
 622         // textures were accessed this frame...
 623
 624         // free the resize buffers
 625         resizebuffersize = 0;
 626         if (resizebuffer)
 627         {
 628                 Mem_Free(resizebuffer);
 629                 resizebuffer = NULL;
 630         }
 631         if (colorconvertbuffer)
 632         {
 633                 Mem_Free(colorconvertbuffer);
 634                 colorconvertbuffer = NULL;
 635         }
 636
 637         if (old_aniso != gl_texture_anisotropy.integer)
 638         {
 639                 gltexture_t *glt;
 640                 gltexturepool_t *pool;
 641                 GLint oldbindtexnum;
 642
 643                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 644
 645                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 646
 647                 CHECKGLERROR
 648                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 649                 {
 650                         for (glt = pool->gltchain;glt;glt = glt->chain)
 651                         {
 652                                 // only update already uploaded images
 653                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 654                                 {
 655                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 656
 657                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 658                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 659
 660                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 661                                 }
 662                         }
 663                 }
 664         }
 665 }
 666
 667 void R_MakeResizeBufferBigger(int size)
 668 {
 669         if (resizebuffersize < size)
 670         {
 671                 resizebuffersize = size;
 672                 if (resizebuffer)
 673                         Mem_Free(resizebuffer);
 674                 if (colorconvertbuffer)
 675                         Mem_Free(colorconvertbuffer);
 676                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 677                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 678                 if (!resizebuffer || !colorconvertbuffer)
 679                         Host_Error("R_Upload: out of memory");
 680         }
 681 }
 682
 683 static void GL_SetupTextureParameters(int flags, textype_t textype, int texturetype)
 684 {
 685         int textureenum = gltexturetypeenums[texturetype];
 686         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 687
 688         CHECKGLERROR
 689
 690         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 691         {
 692                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 693                 if (gl_texture_anisotropy.integer != aniso)
 694                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 695                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 696         }
 697         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 698         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 699         if (gltexturetypedimensions[texturetype] >= 3)
 700         {
 701                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 702         }
 703
 704         CHECKGLERROR
 705         if (flags & TEXF_FORCENEAREST)
 706         {
 707                 if (flags & TEXF_MIPMAP)
 708                 {
 709                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 710                 }
 711                 else
 712                 {
 713                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 714                 }
 715                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 716         }
 717         else if (flags & TEXF_FORCELINEAR)
 718         {
 719                 if (flags & TEXF_MIPMAP)
 720                 {
 721                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 722                         {
 723                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 724                         }
 725                         else
 726                         {
 727                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 728                         }
 729                 }
 730                 else
 731                 {
 732                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 733                 }
 734                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 735         }
 736         else
 737         {
 738                 if (flags & TEXF_MIPMAP)
 739                 {
 740                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 741                 }
 742                 else
 743                 {
 744                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 745                 }
 746                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 747         }
 748
 749         if (textype == TEXTYPE_SHADOWMAP)
 750         {
 751                 if (gl_support_arb_shadow)
 752                 {
 753                         if (flags & TEXF_COMPARE)
 754                         {
 755                                 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
 756                         }
 757                         else
 758                         {
 759                                 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
 760                         }
 761                         qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
 762                 }
 763                 qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);CHECKGLERROR
 764         }
 765
 766         CHECKGLERROR
 767 }
 768
 769 static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 770 {
 771         int i, mip, width, height, depth;
 772         GLint oldbindtexnum;
 773         const unsigned char *prevbuffer;
 774         prevbuffer = data;
 775
 776         CHECKGLERROR
 777
 778         // we need to restore the texture binding after finishing the upload
 779         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 780         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 781
 782         // these are rounded up versions of the size to do better resampling
 783         if (gl_support_arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
 784         {
 785                 width = glt->inputwidth;
 786                 height = glt->inputheight;
 787                 depth = glt->inputdepth;
 788         }
 789         else
 790         {
 791                 for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 792                 for (height = 1;height < glt->inputheight;height <<= 1);
 793                 for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 794         }
 795
 796         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 797         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 798
 799         if (prevbuffer == NULL)
 800         {
 801                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 802                 prevbuffer = resizebuffer;
 803         }
 804         else if (glt->textype->textype == TEXTYPE_PALETTE)
 805         {
 806                 // promote paletted to BGRA, so we only have to worry about BGRA in the rest of this code
 807                 Image_Copy8bitBGRA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 808                 prevbuffer = colorconvertbuffer;
 809         }
 810
 811         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 812         {
 813                 // update a portion of the image
 814                 switch(glt->texturetype)
 815                 {
 816                 case GLTEXTURETYPE_1D:
 817                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 818                         break;
 819                 case GLTEXTURETYPE_2D:
 820                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 821                         break;
 822                 case GLTEXTURETYPE_3D:
 823                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 824                         break;
 825                 default:
 826                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 827                         break;
 828                 }
 829         }
 830         else
 831         {
 832                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 833                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 834
 835                 // upload the image for the first time
 836                 glt->flags &= ~GLTEXF_UPLOAD;
 837
 838                 // cubemaps contain multiple images and thus get processed a bit differently
 839                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 840                 {
 841                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 842                         {
 843                                 Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 844                                 prevbuffer = resizebuffer;
 845                         }
 846                         // picmip/max_size
 847                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 848                         {
 849                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 850                                 prevbuffer = resizebuffer;
 851                         }
 852                 }
 853                 mip = 0;
 854                 if (gl_support_texture_compression)
 855                 {
 856                         if (gl_texturecompression.integer >= 2)
 857                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
 858                         else
 859                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
 860                         CHECKGLERROR
 861                 }
 862                 switch(glt->texturetype)
 863                 {
 864                 case GLTEXTURETYPE_1D:
 865                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 866                         if (glt->flags & TEXF_MIPMAP)
 867                         {
 868                                 while (width > 1 || height > 1 || depth > 1)
 869                                 {
 870                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 871                                         prevbuffer = resizebuffer;
 872                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 873                                 }
 874                         }
 875                         break;
 876                 case GLTEXTURETYPE_2D:
 877                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 878                         if (glt->flags & TEXF_MIPMAP)
 879                         {
 880                                 while (width > 1 || height > 1 || depth > 1)
 881                                 {
 882                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 883                                         prevbuffer = resizebuffer;
 884                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 885                                 }
 886                         }
 887                         break;
 888                 case GLTEXTURETYPE_3D:
 889                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 890                         if (glt->flags & TEXF_MIPMAP)
 891                         {
 892                                 while (width > 1 || height > 1 || depth > 1)
 893                                 {
 894                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 895                                         prevbuffer = resizebuffer;
 896                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 897                                 }
 898                         }
 899                         break;
 900                 case GLTEXTURETYPE_CUBEMAP:
 901                         // convert and upload each side in turn,
 902                         // from a continuous block of input texels
 903                         texturebuffer = (unsigned char *)prevbuffer;
 904                         for (i = 0;i < 6;i++)
 905                         {
 906                                 prevbuffer = texturebuffer;
 907                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 908                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 909                                 {
 910                                         Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 911                                         prevbuffer = resizebuffer;
 912                                 }
 913                                 // picmip/max_size
 914                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 915                                 {
 916                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 917                                         prevbuffer = resizebuffer;
 918                                 }
 919                                 mip = 0;
 920                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 921                                 if (glt->flags & TEXF_MIPMAP)
 922                                 {
 923                                         while (width > 1 || height > 1 || depth > 1)
 924                                         {
 925                                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 926                                                 prevbuffer = resizebuffer;
 927                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
 928                                         }
 929                                 }
 930                         }
 931                         break;
 932                 case GLTEXTURETYPE_RECTANGLE:
 933                         qglTexImage2D(GL_TEXTURE_RECTANGLE_ARB, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, NULL);CHECKGLERROR
 934                         break;
 935                 }
 936                 GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
 937         }
 938         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 939 }
 940
 941 int R_RealGetTexture(rtexture_t *rt)
 942 {
 943         if (rt)
 944         {
 945                 gltexture_t *glt;
 946                 glt = (gltexture_t *)rt;
 947                 if (glt->flags & GLTEXF_DYNAMIC)
 948                         R_UpdateDynamicTexture(glt);
 949                 if (glt->flags & GLTEXF_UPLOAD)
 950                 {
 951                         CHECKGLERROR
 952                         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 953                         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 954                         if (glt->inputtexels)
 955                         {
 956                                 Mem_Free(glt->inputtexels);
 957                                 glt->inputtexels = NULL;
 958                                 glt->flags |= GLTEXF_DESTROYED;
 959                         }
 960                         else if (glt->flags & GLTEXF_DESTROYED)
 961                                 Con_Printf("R_GetTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 962                 }
 963
 964                 return glt->texnum;
 965         }
 966         else
 967                 return 0;
 968 }
 969
 970 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)
 971 {
 972         int i, size;
 973         gltexture_t *glt;
 974         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 975         textypeinfo_t *texinfo;
 976         int precache;
 977
 978         if (cls.state == ca_dedicated)
 979                 return NULL;
 980
 981         if (texturetype == GLTEXTURETYPE_RECTANGLE && !gl_texturerectangle)
 982         {
 983                 Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
 984                 return NULL;
 985         }
 986         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 987         {
 988                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
 989                 return NULL;
 990         }
 991         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 992         {
 993                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
 994                 return NULL;
 995         }
 996
 997         texinfo = R_GetTexTypeInfo(textype, flags);
 998         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 999         if (size < 1)
1000         {
1001                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
1002                 return NULL;
1003         }
1004
1005         // clear the alpha flag if the texture has no transparent pixels
1006         switch(textype)
1007         {
1008         case TEXTYPE_PALETTE:
1009                 if (flags & TEXF_ALPHA)
1010                 {
1011                         flags &= ~TEXF_ALPHA;
1012                         if (data)
1013                         {
1014                                 for (i = 0;i < size;i++)
1015                                 {
1016                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
1017                                         {
1018                                                 flags |= TEXF_ALPHA;
1019                                                 break;
1020                                         }
1021                                 }
1022                         }
1023                 }
1024                 break;
1025         case TEXTYPE_RGBA:
1026         case TEXTYPE_BGRA:
1027                 if (flags & TEXF_ALPHA)
1028                 {
1029                         flags &= ~TEXF_ALPHA;
1030                         if (data)
1031                         {
1032                                 for (i = 3;i < size;i += 4)
1033                                 {
1034                                         if (data[i] < 255)
1035                                         {
1036                                                 flags |= TEXF_ALPHA;
1037                                                 break;
1038                                         }
1039                                 }
1040                         }
1041                 }
1042                 break;
1043         case TEXTYPE_SHADOWMAP:
1044                 break;
1045         default:
1046                 Host_Error("R_LoadTexture: unknown texture type");
1047         }
1048
1049         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
1050         if (identifier)
1051                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
1052         glt->pool = pool;
1053         glt->chain = pool->gltchain;
1054         pool->gltchain = glt;
1055         glt->inputwidth = width;
1056         glt->inputheight = height;
1057         glt->inputdepth = depth;
1058         glt->flags = flags | GLTEXF_UPLOAD;
1059         glt->textype = texinfo;
1060         glt->texturetype = texturetype;
1061         glt->inputdatasize = size;
1062         glt->palette = palette;
1063         glt->glinternalformat = texinfo->glinternalformat;
1064         glt->glformat = texinfo->glformat;
1065         glt->gltype = texinfo->gltype;
1066         glt->bytesperpixel = texinfo->internalbytesperpixel;
1067         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
1068         glt->texnum = 0;
1069         // init the dynamic texture attributes, too [11/22/2007 Black]
1070         glt->dirtytexnum = 0;
1071         glt->updatecallback = NULL;
1072         glt->updatacallback_data = NULL;
1073
1074         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1075
1076         precache = false;
1077         if (glt->flags & TEXF_ALWAYSPRECACHE)
1078                 precache = true;
1079         else if (r_precachetextures.integer >= 2)
1080                 precache = true;
1081         else if (r_precachetextures.integer >= 1)
1082                 if (glt->flags & TEXF_PRECACHE)
1083                         precache = true;
1084
1085         if (precache)
1086         {
1087                 // immediate upload (most common case)
1088                 // data may be NULL (blank texture for dynamic rendering)
1089                 CHECKGLERROR
1090                 qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
1091                 R_Upload(glt, data, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
1092         }
1093         else if (data)
1094         {
1095                 // deferred texture upload (menu graphics)
1096                 // optimize first if possible
1097                 if ((textype == TEXTYPE_BGRA || textype == TEXTYPE_RGBA) && glt->inputwidth * glt->inputheight * glt->inputdepth > glt->tilewidth * glt->tileheight * glt->tiledepth)
1098                 {
1099                         glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, glt->tilewidth*glt->tileheight*glt->tiledepth*glt->sides*glt->bytesperpixel);
1100                         Image_Resample32(data, glt->inputwidth, glt->inputheight, glt->inputdepth, glt->inputtexels, glt->tilewidth, glt->tileheight, glt->tiledepth, r_lerpimages.integer);
1101                         // change texture size accordingly
1102                         glt->inputwidth = glt->tilewidth;
1103                         glt->inputheight = glt->tileheight;
1104                         glt->inputdepth = glt->tiledepth;
1105                         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1106                 }
1107                 else
1108                 {
1109                         glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1110                         memcpy(glt->inputtexels, data, size);
1111                 }
1112         }
1113
1114         // texture converting and uploading can take a while, so make sure we're sending keepalives
1115         CL_KeepaliveMessage(false);
1116
1117         return (rtexture_t *)glt;
1118 }
1119
1120 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)
1121 {
1122         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1123 }
1124
1125 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)
1126 {
1127         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1128 }
1129
1130 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)
1131 {
1132         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1133 }
1134
1135 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)
1136 {
1137         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1138 }
1139
1140 static int R_ShadowMapTextureFlags(int precision, qboolean filter)
1141 {
1142         int flags = TEXF_ALWAYSPRECACHE | TEXF_CLAMP;
1143         if (filter)
1144                 flags |= TEXF_FORCELINEAR | TEXF_COMPARE;
1145         else
1146                 flags |= TEXF_FORCENEAREST;
1147         if (precision <= 16)
1148                 flags |= TEXF_LOWPRECISION;
1149         return flags;
1150 }
1151
1152 rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
1153 {
1154         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
1155 }
1156
1157 rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
1158 {
1159         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_2D, NULL, NULL);
1160 }
1161
1162 rtexture_t *R_LoadTextureShadowMapCube(rtexturepool_t *rtexturepool, const char *identifier, int width, int precision, qboolean filter)
1163 {
1164     return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
1165 }
1166
1167 int R_TextureHasAlpha(rtexture_t *rt)
1168 {
1169         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1170 }
1171
1172 int R_TextureWidth(rtexture_t *rt)
1173 {
1174         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1175 }
1176
1177 int R_TextureHeight(rtexture_t *rt)
1178 {
1179         return rt ? ((gltexture_t *)rt)->inputheight : 0;
1180 }
1181
1182 void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height)
1183 {
1184         gltexture_t *glt;
1185         if (rt == NULL)
1186                 Host_Error("R_UpdateTexture: no texture supplied");
1187         if (data == NULL)
1188                 Host_Error("R_UpdateTexture: no data supplied");
1189
1190         // we need it to be uploaded before we can update a part of it
1191         R_RealGetTexture(rt);
1192
1193         // update part of the texture
1194         glt = (gltexture_t *)rt;
1195         R_Upload(glt, data, x, y, 0, width, height, 1);
1196 }
1197
1198 void R_ClearTexture (rtexture_t *rt)
1199 {
1200         gltexture_t *glt = (gltexture_t *)rt;
1201
1202         R_Upload( glt, NULL, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth );
1203 }