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", "1", "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", "1", "whether to compress 2d (hud/menu) textures other than the font"};
  18 cvar_t gl_texturecompression_q3bsplightmaps = {CVAR_SAVE, "gl_texturecompression_q3bsplightmaps", "1", "whether to compress lightmaps in q3bsp format levels"};
  19 cvar_t gl_texturecompression_q3bspdeluxemaps = {CVAR_SAVE, "gl_texturecompression_q3bspdeluxemaps", "1", "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
  37 typedef struct textypeinfo_s
  38 {
  39         int textype;
  40         int inputbytesperpixel;
  41         int internalbytesperpixel;
  42         float glinternalbytesperpixel;
  43         int glformat;
  44         int glinternalformat;
  45 }
  46 textypeinfo_t;
  47
  48 static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_RGBA   , 3};
  49 static textypeinfo_t textype_rgb                    = {TEXTYPE_RGB    , 3, 3, 4.0f, GL_RGB    , 3};
  50 static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 3};
  51 static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_RGBA   , 4};
  52 static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 4};
  53 static textypeinfo_t textype_palette_compress       = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_RGBA   , GL_COMPRESSED_RGB_ARB};
  54 static textypeinfo_t textype_rgb_compress           = {TEXTYPE_RGB    , 3, 3, 0.5f, GL_RGB    , GL_COMPRESSED_RGB_ARB};
  55 static textypeinfo_t textype_rgba_compress          = {TEXTYPE_RGBA   , 4, 4, 0.5f, GL_RGBA   , GL_COMPRESSED_RGB_ARB};
  56 static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_RGBA   , GL_COMPRESSED_RGBA_ARB};
  57 static textypeinfo_t textype_rgba_alpha_compress    = {TEXTYPE_RGBA   , 4, 4, 1.0f, GL_RGBA   , GL_COMPRESSED_RGBA_ARB};
  58
  59 #define GLTEXTURETYPE_1D 0
  60 #define GLTEXTURETYPE_2D 1
  61 #define GLTEXTURETYPE_3D 2
  62 #define GLTEXTURETYPE_CUBEMAP 3
  63
  64 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
  65 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
  66 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
  67 static int cubemapside[6] =
  68 {
  69         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  70         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  71         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  72         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  73         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  74         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  75 };
  76
  77 typedef struct gltexture_s
  78 {
  79         // this field is exposed to the R_GetTexture macro, for speed reasons
  80         // (must be identical in rtexture_t)
  81         int texnum; // GL texture slot number
  82
  83         // pointer to texturepool (check this to see if the texture is allocated)
  84         struct gltexturepool_s *pool;
  85         // pointer to next texture in texturepool chain
  86         struct gltexture_s *chain;
  87         // name of the texture (this might be removed someday), no duplicates
  88         char identifier[MAX_QPATH + 32];
  89         // original data size in *inputtexels
  90         int inputwidth, inputheight, inputdepth;
  91         // copy of the original texture(s) supplied to the upload function, for
  92         // delayed uploads (non-precached)
  93         unsigned char *inputtexels;
  94         // original data size in *inputtexels
  95         int inputdatasize;
  96         // flags supplied to the LoadTexture function
  97         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
  98         int flags;
  99         // pointer to one of the textype_ structs
 100         textypeinfo_t *textype;
 101         // one of the GLTEXTURETYPE_ values
 102         int texturetype;
 103         // palette if the texture is TEXTYPE_PALETTE
 104         const unsigned int *palette;
 105         // actual stored texture size after gl_picmip and gl_max_size are applied
 106         // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
 107         int tilewidth, tileheight, tiledepth;
 108         // 1 or 6 depending on texturetype
 109         int sides;
 110         // bytes per pixel
 111         int bytesperpixel;
 112         // GL_RGB or GL_RGBA
 113         int glformat;
 114         // 3 or 4
 115         int glinternalformat;
 116 }
 117 gltexture_t;
 118
 119 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 120
 121 typedef struct gltexturepool_s
 122 {
 123         unsigned int sentinel;
 124         struct gltexture_s *gltchain;
 125         struct gltexturepool_s *next;
 126 }
 127 gltexturepool_t;
 128
 129 static gltexturepool_t *gltexturepoolchain = NULL;
 130
 131 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 132 static int resizebuffersize = 0;
 133 static unsigned char *texturebuffer;
 134 static int texturebuffersize = 0;
 135
 136 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 137 {
 138         if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
 139         {
 140                 if (flags & TEXF_ALPHA)
 141                 {
 142                         switch(textype)
 143                         {
 144                         case TEXTYPE_PALETTE:
 145                                 return &textype_palette_alpha_compress;
 146                         case TEXTYPE_RGB:
 147                                 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
 148                                 return NULL;
 149                         case TEXTYPE_RGBA:
 150                                 return &textype_rgba_alpha_compress;
 151                         default:
 152                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 153                                 return NULL;
 154                         }
 155                 }
 156                 else
 157                 {
 158                         switch(textype)
 159                         {
 160                         case TEXTYPE_PALETTE:
 161                                 return &textype_palette_compress;
 162                         case TEXTYPE_RGB:
 163                                 return &textype_rgb_compress;
 164                         case TEXTYPE_RGBA:
 165                                 return &textype_rgba_compress;
 166                         default:
 167                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 168                                 return NULL;
 169                         }
 170                 }
 171         }
 172         else
 173         {
 174                 if (flags & TEXF_ALPHA)
 175                 {
 176                         switch(textype)
 177                         {
 178                         case TEXTYPE_PALETTE:
 179                                 return &textype_palette_alpha;
 180                         case TEXTYPE_RGB:
 181                                 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
 182                                 return NULL;
 183                         case TEXTYPE_RGBA:
 184                                 return &textype_rgba_alpha;
 185                         default:
 186                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 187                                 return NULL;
 188                         }
 189                 }
 190                 else
 191                 {
 192                         switch(textype)
 193                         {
 194                         case TEXTYPE_PALETTE:
 195                                 return &textype_palette;
 196                         case TEXTYPE_RGB:
 197                                 return &textype_rgb;
 198                         case TEXTYPE_RGBA:
 199                                 return &textype_rgba;
 200                         default:
 201                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 202                                 return NULL;
 203                         }
 204                 }
 205         }
 206 }
 207
 208 static void R_UploadTexture(gltexture_t *t);
 209
 210 static void R_PrecacheTexture(gltexture_t *glt)
 211 {
 212         int precache;
 213         precache = false;
 214         if (glt->flags & TEXF_ALWAYSPRECACHE)
 215                 precache = true;
 216         else if (r_precachetextures.integer >= 2)
 217                 precache = true;
 218         else if (r_precachetextures.integer >= 1)
 219                 if (glt->flags & TEXF_PRECACHE)
 220                         precache = true;
 221
 222         if (precache)
 223                 R_UploadTexture(glt);
 224 }
 225
 226 int R_RealGetTexture(rtexture_t *rt)
 227 {
 228         if (rt)
 229         {
 230                 gltexture_t *glt;
 231                 glt = (gltexture_t *)rt;
 232                 if (glt->flags & GLTEXF_UPLOAD)
 233                         R_UploadTexture(glt);
 234                 return glt->texnum;
 235         }
 236         else
 237                 return 0;
 238 }
 239
 240 void R_FreeTexture(rtexture_t *rt)
 241 {
 242         gltexture_t *glt, **gltpointer;
 243
 244         glt = (gltexture_t *)rt;
 245         if (glt == NULL)
 246                 Host_Error("R_FreeTexture: texture == NULL");
 247
 248         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 249         if (*gltpointer == glt)
 250                 *gltpointer = glt->chain;
 251         else
 252                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 253
 254         if (glt->texnum)
 255         {
 256                 CHECKGLERROR
 257                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 258         }
 259
 260         if (glt->inputtexels)
 261                 Mem_Free(glt->inputtexels);
 262         Mem_Free(glt);
 263 }
 264
 265 rtexturepool_t *R_AllocTexturePool(void)
 266 {
 267         gltexturepool_t *pool;
 268         if (texturemempool == NULL)
 269                 return NULL;
 270         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 271         if (pool == NULL)
 272                 return NULL;
 273         pool->next = gltexturepoolchain;
 274         gltexturepoolchain = pool;
 275         pool->sentinel = TEXTUREPOOL_SENTINEL;
 276         return (rtexturepool_t *)pool;
 277 }
 278
 279 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 280 {
 281         gltexturepool_t *pool, **poolpointer;
 282         if (rtexturepool == NULL)
 283                 return;
 284         if (*rtexturepool == NULL)
 285                 return;
 286         pool = (gltexturepool_t *)(*rtexturepool);
 287         *rtexturepool = NULL;
 288         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 289                 Host_Error("R_FreeTexturePool: pool already freed");
 290         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 291         if (*poolpointer == pool)
 292                 *poolpointer = pool->next;
 293         else
 294                 Host_Error("R_FreeTexturePool: pool not linked");
 295         while (pool->gltchain)
 296                 R_FreeTexture((rtexture_t *)pool->gltchain);
 297         Mem_Free(pool);
 298 }
 299
 300
 301 typedef struct glmode_s
 302 {
 303         char *name;
 304         int minification, magnification;
 305 }
 306 glmode_t;
 307
 308 static glmode_t modes[6] =
 309 {
 310         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 311         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 312         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 313         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 314         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 315         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 316 };
 317
 318 static void GL_TextureMode_f (void)
 319 {
 320         int i;
 321         GLint oldbindtexnum;
 322         gltexture_t *glt;
 323         gltexturepool_t *pool;
 324
 325         if (Cmd_Argc() == 1)
 326         {
 327                 for (i = 0;i < 6;i++)
 328                 {
 329                         if (gl_filter_min == modes[i].minification)
 330                         {
 331                                 Con_Printf("%s\n", modes[i].name);
 332                                 return;
 333                         }
 334                 }
 335                 Con_Print("current filter is unknown???\n");
 336                 return;
 337         }
 338
 339         for (i = 0;i < 6;i++)
 340                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 341                         break;
 342         if (i == 6)
 343         {
 344                 Con_Print("bad filter name\n");
 345                 return;
 346         }
 347
 348         gl_filter_min = modes[i].minification;
 349         gl_filter_mag = modes[i].magnification;
 350
 351         // change all the existing mipmap texture objects
 352         // FIXME: force renderer(/client/something?) restart instead?
 353         CHECKGLERROR
 354         for (pool = gltexturepoolchain;pool;pool = pool->next)
 355         {
 356                 for (glt = pool->gltchain;glt;glt = glt->chain)
 357                 {
 358                         // only update already uploaded images
 359                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 360                         {
 361                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 362                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 363                                 if (glt->flags & TEXF_MIPMAP)
 364                                 {
 365                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 366                                 }
 367                                 else
 368                                 {
 369                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 370                                 }
 371                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 372                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 373                         }
 374                 }
 375         }
 376 }
 377
 378 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 379 {
 380         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 381
 382         if (gl_max_size.integer > gl_max_texture_size)
 383                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 384
 385         switch (texturetype)
 386         {
 387         default:
 388         case GLTEXTURETYPE_1D:
 389         case GLTEXTURETYPE_2D:
 390                 maxsize = gl_max_texture_size;
 391                 break;
 392         case GLTEXTURETYPE_3D:
 393                 maxsize = gl_max_3d_texture_size;
 394                 break;
 395         case GLTEXTURETYPE_CUBEMAP:
 396                 maxsize = gl_max_cube_map_texture_size;
 397                 break;
 398         }
 399
 400         if (flags & TEXF_PICMIP)
 401         {
 402                 maxsize = min(maxsize, gl_max_size.integer);
 403                 picmip = gl_picmip.integer;
 404         }
 405
 406         if (outwidth)
 407         {
 408                 if (gl_support_arb_texture_non_power_of_two)
 409                         width2 = min(inwidth >> picmip, maxsize);
 410                 else
 411                 {
 412                         for (width2 = 1;width2 < inwidth;width2 <<= 1);
 413                         for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 414                 }
 415                 *outwidth = max(1, width2);
 416         }
 417         if (outheight)
 418         {
 419                 if (gl_support_arb_texture_non_power_of_two)
 420                         height2 = min(inheight >> picmip, maxsize);
 421                 else
 422                 {
 423                         for (height2 = 1;height2 < inheight;height2 <<= 1);
 424                         for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 425                 }
 426                 *outheight = max(1, height2);
 427         }
 428         if (outdepth)
 429         {
 430                 if (gl_support_arb_texture_non_power_of_two)
 431                         depth2 = min(indepth >> picmip, maxsize);
 432                 else
 433                 {
 434                         for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 435                         for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 436                 }
 437                 *outdepth = max(1, depth2);
 438         }
 439 }
 440
 441
 442 static int R_CalcTexelDataSize (gltexture_t *glt)
 443 {
 444         int width2, height2, depth2, size;
 445
 446         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 447
 448         size = width2 * height2 * depth2;
 449
 450         if (glt->flags & TEXF_MIPMAP)
 451         {
 452                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 453                 {
 454                         if (width2 > 1)
 455                                 width2 >>= 1;
 456                         if (height2 > 1)
 457                                 height2 >>= 1;
 458                         if (depth2 > 1)
 459                                 depth2 >>= 1;
 460                         size += width2 * height2 * depth2;
 461                 }
 462         }
 463
 464         return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 465 }
 466
 467 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 468 {
 469         int glsize;
 470         int isloaded;
 471         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 472         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 473         gltexture_t *glt;
 474         gltexturepool_t *pool;
 475         if (printeach)
 476                 Con_Print("glsize input loaded mip alpha name\n");
 477         for (pool = gltexturepoolchain;pool;pool = pool->next)
 478         {
 479                 pooltotal = 0;
 480                 pooltotalt = 0;
 481                 pooltotalp = 0;
 482                 poolloaded = 0;
 483                 poolloadedt = 0;
 484                 poolloadedp = 0;
 485                 for (glt = pool->gltchain;glt;glt = glt->chain)
 486                 {
 487                         glsize = R_CalcTexelDataSize(glt);
 488                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 489                         pooltotal++;
 490                         pooltotalt += glsize;
 491                         pooltotalp += glt->inputdatasize;
 492                         if (isloaded)
 493                         {
 494                                 poolloaded++;
 495                                 poolloadedt += glsize;
 496                                 poolloadedp += glt->inputdatasize;
 497                         }
 498                         if (printeach)
 499                                 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);
 500                 }
 501                 if (printpool)
 502                         Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", pool, pooltotal, pooltotalt / 1048576.0, pooltotalp / 1048576.0, poolloaded, poolloadedt / 1048576.0, poolloadedp / 1048576.0, pooltotal - poolloaded, (pooltotalt - poolloadedt) / 1048576.0, (pooltotalp - poolloadedp) / 1048576.0);
 503                 sumtotal += pooltotal;
 504                 sumtotalt += pooltotalt;
 505                 sumtotalp += pooltotalp;
 506                 sumloaded += poolloaded;
 507                 sumloadedt += poolloadedt;
 508                 sumloadedp += poolloadedp;
 509         }
 510         if (printtotal)
 511                 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);
 512 }
 513
 514 static void R_TextureStats_f(void)
 515 {
 516         R_TextureStats_Print(true, true, true);
 517 }
 518
 519 static void r_textures_start(void)
 520 {
 521         // LordHavoc: allow any alignment
 522         CHECKGLERROR
 523         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 524         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 525
 526         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 527
 528         // Disable JPEG screenshots if the DLL isn't loaded
 529         if (! JPEG_OpenLibrary ())
 530                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 531         // TODO: support png screenshots?
 532         PNG_OpenLibrary ();
 533 }
 534
 535 static void r_textures_shutdown(void)
 536 {
 537         rtexturepool_t *temp;
 538
 539         JPEG_CloseLibrary ();
 540
 541         while(gltexturepoolchain)
 542         {
 543                 temp = (rtexturepool_t *) gltexturepoolchain;
 544                 R_FreeTexturePool(&temp);
 545         }
 546
 547         resizebuffersize = 0;
 548         texturebuffersize = 0;
 549         resizebuffer = NULL;
 550         colorconvertbuffer = NULL;
 551         texturebuffer = NULL;
 552         Mem_FreePool(&texturemempool);
 553 }
 554
 555 static void r_textures_newmap(void)
 556 {
 557 }
 558
 559 void R_Textures_Init (void)
 560 {
 561         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 562         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 563         Cvar_RegisterVariable (&gl_max_size);
 564         Cvar_RegisterVariable (&gl_picmip);
 565         Cvar_RegisterVariable (&r_lerpimages);
 566         Cvar_RegisterVariable (&r_precachetextures);
 567         Cvar_RegisterVariable (&gl_texture_anisotropy);
 568         Cvar_RegisterVariable (&gl_texturecompression);
 569         Cvar_RegisterVariable (&gl_texturecompression_color);
 570         Cvar_RegisterVariable (&gl_texturecompression_normal);
 571         Cvar_RegisterVariable (&gl_texturecompression_gloss);
 572         Cvar_RegisterVariable (&gl_texturecompression_glow);
 573         Cvar_RegisterVariable (&gl_texturecompression_2d);
 574         Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
 575         Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
 576         Cvar_RegisterVariable (&gl_texturecompression_sky);
 577         Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
 578
 579         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 580 }
 581
 582 void R_Textures_Frame (void)
 583 {
 584         static int old_aniso = 0;
 585
 586         // could do procedural texture animation here, if we keep track of which
 587         // textures were accessed this frame...
 588
 589         // free the resize buffers
 590         resizebuffersize = 0;
 591         if (resizebuffer)
 592         {
 593                 Mem_Free(resizebuffer);
 594                 resizebuffer = NULL;
 595         }
 596         if (colorconvertbuffer)
 597         {
 598                 Mem_Free(colorconvertbuffer);
 599                 colorconvertbuffer = NULL;
 600         }
 601
 602         if (old_aniso != gl_texture_anisotropy.integer)
 603         {
 604                 gltexture_t *glt;
 605                 gltexturepool_t *pool;
 606                 GLint oldbindtexnum;
 607
 608                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 609
 610                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 611
 612                 CHECKGLERROR
 613                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 614                 {
 615                         for (glt = pool->gltchain;glt;glt = glt->chain)
 616                         {
 617                                 // only update already uploaded images
 618                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 619                                 {
 620                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 621
 622                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 623                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 624
 625                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 626                                 }
 627                         }
 628                 }
 629         }
 630 }
 631
 632 void R_MakeResizeBufferBigger(int size)
 633 {
 634         if (resizebuffersize < size)
 635         {
 636                 resizebuffersize = size;
 637                 if (resizebuffer)
 638                         Mem_Free(resizebuffer);
 639                 if (colorconvertbuffer)
 640                         Mem_Free(colorconvertbuffer);
 641                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 642                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 643                 if (!resizebuffer || !colorconvertbuffer)
 644                         Host_Error("R_Upload: out of memory");
 645         }
 646 }
 647
 648 static void GL_SetupTextureParameters(int flags, int texturetype)
 649 {
 650         int textureenum = gltexturetypeenums[texturetype];
 651         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 652
 653         CHECKGLERROR
 654
 655         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 656         {
 657                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 658                 if (gl_texture_anisotropy.integer != aniso)
 659                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 660                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 661         }
 662         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 663         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 664         if (gltexturetypedimensions[texturetype] >= 3)
 665         {
 666                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 667         }
 668
 669         CHECKGLERROR
 670         if (flags & TEXF_FORCENEAREST)
 671         {
 672                 if (flags & TEXF_MIPMAP)
 673                 {
 674                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 675                 }
 676                 else
 677                 {
 678                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 679                 }
 680                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 681         }
 682         else if (flags & TEXF_FORCELINEAR)
 683         {
 684                 if (flags & TEXF_MIPMAP)
 685                 {
 686                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 687                         {
 688                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 689                         }
 690                         else
 691                         {
 692                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 693                         }
 694                 }
 695                 else
 696                 {
 697                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 698                 }
 699                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 700         }
 701         else
 702         {
 703                 if (flags & TEXF_MIPMAP)
 704                 {
 705                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 706                 }
 707                 else
 708                 {
 709                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 710                 }
 711                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 712         }
 713
 714         CHECKGLERROR
 715 }
 716
 717 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 718 {
 719         int i, mip, width, height, depth;
 720         GLint oldbindtexnum;
 721         unsigned char *prevbuffer;
 722         prevbuffer = data;
 723
 724         CHECKGLERROR
 725
 726         // we need to restore the texture binding after finishing the upload
 727         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 728         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 729
 730         // these are rounded up versions of the size to do better resampling
 731         if (gl_support_arb_texture_non_power_of_two)
 732         {
 733                 width = glt->inputwidth;
 734                 height = glt->inputheight;
 735                 depth = glt->inputdepth;
 736         }
 737         else
 738         {
 739                 for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 740                 for (height = 1;height < glt->inputheight;height <<= 1);
 741                 for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 742         }
 743
 744         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 745         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 746
 747         if (prevbuffer == NULL)
 748         {
 749                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 750                 prevbuffer = resizebuffer;
 751         }
 752         else if (glt->textype->textype == TEXTYPE_PALETTE)
 753         {
 754                 // promote paletted to RGBA, so we only have to worry about RGB and
 755                 // RGBA in the rest of this code
 756                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 757                 prevbuffer = colorconvertbuffer;
 758         }
 759
 760         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 761         {
 762                 // update a portion of the image
 763                 switch(glt->texturetype)
 764                 {
 765                 case GLTEXTURETYPE_1D:
 766                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 767                         break;
 768                 case GLTEXTURETYPE_2D:
 769                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 770                         break;
 771                 case GLTEXTURETYPE_3D:
 772                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 773                         break;
 774                 default:
 775                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 776                         break;
 777                 }
 778         }
 779         else
 780         {
 781                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 782                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 783
 784                 // upload the image for the first time
 785                 glt->flags &= ~GLTEXF_UPLOAD;
 786
 787                 // cubemaps contain multiple images and thus get processed a bit differently
 788                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 789                 {
 790                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 791                         {
 792                                 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 793                                 prevbuffer = resizebuffer;
 794                         }
 795                         // picmip/max_size
 796                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 797                         {
 798                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 799                                 prevbuffer = resizebuffer;
 800                         }
 801                 }
 802                 mip = 0;
 803                 if (gl_support_texture_compression)
 804                 {
 805                         if (gl_texturecompression.integer >= 2)
 806                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
 807                         else
 808                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
 809                         CHECKGLERROR
 810                 }
 811                 switch(glt->texturetype)
 812                 {
 813                 case GLTEXTURETYPE_1D:
 814                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 815                         if (glt->flags & TEXF_MIPMAP)
 816                         {
 817                                 while (width > 1 || height > 1 || depth > 1)
 818                                 {
 819                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 820                                         prevbuffer = resizebuffer;
 821                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 822                                 }
 823                         }
 824                         break;
 825                 case GLTEXTURETYPE_2D:
 826                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 827                         if (glt->flags & TEXF_MIPMAP)
 828                         {
 829                                 while (width > 1 || height > 1 || depth > 1)
 830                                 {
 831                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 832                                         prevbuffer = resizebuffer;
 833                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 834                                 }
 835                         }
 836                         break;
 837                 case GLTEXTURETYPE_3D:
 838                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 839                         if (glt->flags & TEXF_MIPMAP)
 840                         {
 841                                 while (width > 1 || height > 1 || depth > 1)
 842                                 {
 843                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 844                                         prevbuffer = resizebuffer;
 845                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 846                                 }
 847                         }
 848                         break;
 849                 case GLTEXTURETYPE_CUBEMAP:
 850                         // convert and upload each side in turn,
 851                         // from a continuous block of input texels
 852                         texturebuffer = prevbuffer;
 853                         for (i = 0;i < 6;i++)
 854                         {
 855                                 prevbuffer = texturebuffer;
 856                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 857                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 858                                 {
 859                                         Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 860                                         prevbuffer = resizebuffer;
 861                                 }
 862                                 // picmip/max_size
 863                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 864                                 {
 865                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 866                                         prevbuffer = resizebuffer;
 867                                 }
 868                                 mip = 0;
 869                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 870                                 if (glt->flags & TEXF_MIPMAP)
 871                                 {
 872                                         while (width > 1 || height > 1 || depth > 1)
 873                                         {
 874                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 875                                                 prevbuffer = resizebuffer;
 876                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 877                                         }
 878                                 }
 879                         }
 880                         break;
 881                 }
 882                 GL_SetupTextureParameters(glt->flags, glt->texturetype);
 883         }
 884         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 885 }
 886
 887 static void R_UploadTexture (gltexture_t *glt)
 888 {
 889         if (!(glt->flags & GLTEXF_UPLOAD))
 890                 return;
 891
 892         CHECKGLERROR
 893         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 894         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 895         if (glt->inputtexels)
 896         {
 897                 Mem_Free(glt->inputtexels);
 898                 glt->inputtexels = NULL;
 899                 glt->flags |= GLTEXF_DESTROYED;
 900         }
 901         else if (glt->flags & GLTEXF_DESTROYED)
 902                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 903 }
 904
 905 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const unsigned char *data, const unsigned int *palette)
 906 {
 907         int i, size;
 908         gltexture_t *glt;
 909         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 910         textypeinfo_t *texinfo;
 911
 912         if (cls.state == ca_dedicated)
 913                 return NULL;
 914
 915         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 916         {
 917                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
 918                 return NULL;
 919         }
 920         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 921         {
 922                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
 923                 return NULL;
 924         }
 925
 926         texinfo = R_GetTexTypeInfo(textype, flags);
 927         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 928         if (size < 1)
 929         {
 930                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
 931                 return NULL;
 932         }
 933
 934         // clear the alpha flag if the texture has no transparent pixels
 935         switch(textype)
 936         {
 937         case TEXTYPE_PALETTE:
 938                 if (flags & TEXF_ALPHA)
 939                 {
 940                         flags &= ~TEXF_ALPHA;
 941                         if (data)
 942                         {
 943                                 for (i = 0;i < size;i++)
 944                                 {
 945                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
 946                                         {
 947                                                 flags |= TEXF_ALPHA;
 948                                                 break;
 949                                         }
 950                                 }
 951                         }
 952                 }
 953                 break;
 954         case TEXTYPE_RGB:
 955                 if (flags & TEXF_ALPHA)
 956                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
 957                 break;
 958         case TEXTYPE_RGBA:
 959                 if (flags & TEXF_ALPHA)
 960                 {
 961                         flags &= ~TEXF_ALPHA;
 962                         if (data)
 963                         {
 964                                 for (i = 3;i < size;i += 4)
 965                                 {
 966                                         if (data[i] < 255)
 967                                         {
 968                                                 flags |= TEXF_ALPHA;
 969                                                 break;
 970                                         }
 971                                 }
 972                         }
 973                 }
 974                 break;
 975         default:
 976                 Host_Error("R_LoadTexture: unknown texture type");
 977         }
 978
 979         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
 980         if (identifier)
 981                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
 982         glt->pool = pool;
 983         glt->chain = pool->gltchain;
 984         pool->gltchain = glt;
 985         glt->inputwidth = width;
 986         glt->inputheight = height;
 987         glt->inputdepth = depth;
 988         glt->flags = flags | GLTEXF_UPLOAD;
 989         glt->textype = texinfo;
 990         glt->texturetype = texturetype;
 991         glt->inputdatasize = size;
 992         glt->palette = palette;
 993         glt->glinternalformat = texinfo->glinternalformat;
 994         glt->glformat = texinfo->glformat;
 995         glt->bytesperpixel = texinfo->internalbytesperpixel;
 996         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 997         glt->texnum = -1;
 998
 999         if (data)
1000         {
1001                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1002                 memcpy(glt->inputtexels, data, size);
1003         }
1004         else
1005                 glt->inputtexels = NULL;
1006
1007         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1008         R_PrecacheTexture(glt);
1009
1010         return (rtexture_t *)glt;
1011 }
1012
1013 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1014 {
1015         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1016 }
1017
1018 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1019 {
1020         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1021 }
1022
1023 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1024 {
1025         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1026 }
1027
1028 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1029 {
1030         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1031 }
1032
1033 int R_TextureHasAlpha(rtexture_t *rt)
1034 {
1035         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1036 }
1037
1038 int R_TextureWidth(rtexture_t *rt)
1039 {
1040         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1041 }
1042
1043 int R_TextureHeight(rtexture_t *rt)
1044 {
1045         return rt ? ((gltexture_t *)rt)->inputheight : 0;
1046 }
1047
1048 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
1049 {
1050         gltexture_t *glt;
1051         if (rt == NULL)
1052                 Host_Error("R_UpdateTexture: no texture supplied");
1053         if (data == NULL)
1054                 Host_Error("R_UpdateTexture: no data supplied");
1055         glt = (gltexture_t *)rt;
1056
1057         // we need it to be uploaded before we can update a part of it
1058         if (glt->flags & GLTEXF_UPLOAD)
1059                 R_UploadTexture(glt);
1060
1061         // update part of the texture
1062         R_Upload(glt, data, x, y, 0, width, height, 1);
1063 }
1064