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         return NULL; // this line only to hush compiler warnings
 207 }
 208
 209 static void R_UploadTexture(gltexture_t *t);
 210
 211 static void R_PrecacheTexture(gltexture_t *glt)
 212 {
 213         int precache;
 214         precache = false;
 215         if (glt->flags & TEXF_ALWAYSPRECACHE)
 216                 precache = true;
 217         else if (r_precachetextures.integer >= 2)
 218                 precache = true;
 219         else if (r_precachetextures.integer >= 1)
 220                 if (glt->flags & TEXF_PRECACHE)
 221                         precache = true;
 222
 223         if (precache)
 224                 R_UploadTexture(glt);
 225 }
 226
 227 int R_RealGetTexture(rtexture_t *rt)
 228 {
 229         if (rt)
 230         {
 231                 gltexture_t *glt;
 232                 glt = (gltexture_t *)rt;
 233                 if (glt->flags & GLTEXF_UPLOAD)
 234                         R_UploadTexture(glt);
 235                 return glt->texnum;
 236         }
 237         else
 238                 return 0;
 239 }
 240
 241 void R_FreeTexture(rtexture_t *rt)
 242 {
 243         gltexture_t *glt, **gltpointer;
 244
 245         glt = (gltexture_t *)rt;
 246         if (glt == NULL)
 247                 Host_Error("R_FreeTexture: texture == NULL");
 248
 249         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 250         if (*gltpointer == glt)
 251                 *gltpointer = glt->chain;
 252         else
 253                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 254
 255         if (glt->texnum)
 256         {
 257                 CHECKGLERROR
 258                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 259         }
 260
 261         if (glt->inputtexels)
 262                 Mem_Free(glt->inputtexels);
 263         Mem_Free(glt);
 264 }
 265
 266 rtexturepool_t *R_AllocTexturePool(void)
 267 {
 268         gltexturepool_t *pool;
 269         if (texturemempool == NULL)
 270                 return NULL;
 271         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 272         if (pool == NULL)
 273                 return NULL;
 274         pool->next = gltexturepoolchain;
 275         gltexturepoolchain = pool;
 276         pool->sentinel = TEXTUREPOOL_SENTINEL;
 277         return (rtexturepool_t *)pool;
 278 }
 279
 280 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 281 {
 282         gltexturepool_t *pool, **poolpointer;
 283         if (rtexturepool == NULL)
 284                 return;
 285         if (*rtexturepool == NULL)
 286                 return;
 287         pool = (gltexturepool_t *)(*rtexturepool);
 288         *rtexturepool = NULL;
 289         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 290                 Host_Error("R_FreeTexturePool: pool already freed");
 291         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 292         if (*poolpointer == pool)
 293                 *poolpointer = pool->next;
 294         else
 295                 Host_Error("R_FreeTexturePool: pool not linked");
 296         while (pool->gltchain)
 297                 R_FreeTexture((rtexture_t *)pool->gltchain);
 298         Mem_Free(pool);
 299 }
 300
 301
 302 typedef struct glmode_s
 303 {
 304         char *name;
 305         int minification, magnification;
 306 }
 307 glmode_t;
 308
 309 static glmode_t modes[6] =
 310 {
 311         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 312         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 313         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 314         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 315         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 316         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 317 };
 318
 319 static void GL_TextureMode_f (void)
 320 {
 321         int i;
 322         GLint oldbindtexnum;
 323         gltexture_t *glt;
 324         gltexturepool_t *pool;
 325
 326         if (Cmd_Argc() == 1)
 327         {
 328                 for (i = 0;i < 6;i++)
 329                 {
 330                         if (gl_filter_min == modes[i].minification)
 331                         {
 332                                 Con_Printf("%s\n", modes[i].name);
 333                                 return;
 334                         }
 335                 }
 336                 Con_Print("current filter is unknown???\n");
 337                 return;
 338         }
 339
 340         for (i = 0;i < 6;i++)
 341                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 342                         break;
 343         if (i == 6)
 344         {
 345                 Con_Print("bad filter name\n");
 346                 return;
 347         }
 348
 349         gl_filter_min = modes[i].minification;
 350         gl_filter_mag = modes[i].magnification;
 351
 352         // change all the existing mipmap texture objects
 353         // FIXME: force renderer(/client/something?) restart instead?
 354         CHECKGLERROR
 355         for (pool = gltexturepoolchain;pool;pool = pool->next)
 356         {
 357                 for (glt = pool->gltchain;glt;glt = glt->chain)
 358                 {
 359                         // only update already uploaded images
 360                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 361                         {
 362                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 363                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 364                                 if (glt->flags & TEXF_MIPMAP)
 365                                 {
 366                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 367                                 }
 368                                 else
 369                                 {
 370                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 371                                 }
 372                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 373                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 374                         }
 375                 }
 376         }
 377 }
 378
 379 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 380 {
 381         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 382
 383         if (gl_max_size.integer > gl_max_texture_size)
 384                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 385
 386         switch (texturetype)
 387         {
 388         default:
 389         case GLTEXTURETYPE_1D:
 390         case GLTEXTURETYPE_2D:
 391                 maxsize = gl_max_texture_size;
 392                 break;
 393         case GLTEXTURETYPE_3D:
 394                 maxsize = gl_max_3d_texture_size;
 395                 break;
 396         case GLTEXTURETYPE_CUBEMAP:
 397                 maxsize = gl_max_cube_map_texture_size;
 398                 break;
 399         }
 400
 401         if (flags & TEXF_PICMIP)
 402         {
 403                 maxsize = min(maxsize, gl_max_size.integer);
 404                 picmip = gl_picmip.integer;
 405         }
 406
 407         if (outwidth)
 408         {
 409                 if (gl_support_arb_texture_non_power_of_two)
 410                         width2 = min(inwidth >> picmip, maxsize);
 411                 else
 412                 {
 413                         for (width2 = 1;width2 < inwidth;width2 <<= 1);
 414                         for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 415                 }
 416                 *outwidth = max(1, width2);
 417         }
 418         if (outheight)
 419         {
 420                 if (gl_support_arb_texture_non_power_of_two)
 421                         height2 = min(inheight >> picmip, maxsize);
 422                 else
 423                 {
 424                         for (height2 = 1;height2 < inheight;height2 <<= 1);
 425                         for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 426                 }
 427                 *outheight = max(1, height2);
 428         }
 429         if (outdepth)
 430         {
 431                 if (gl_support_arb_texture_non_power_of_two)
 432                         depth2 = min(indepth >> picmip, maxsize);
 433                 else
 434                 {
 435                         for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 436                         for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 437                 }
 438                 *outdepth = max(1, depth2);
 439         }
 440 }
 441
 442
 443 static int R_CalcTexelDataSize (gltexture_t *glt)
 444 {
 445         int width2, height2, depth2, size;
 446
 447         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 448
 449         size = width2 * height2 * depth2;
 450
 451         if (glt->flags & TEXF_MIPMAP)
 452         {
 453                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 454                 {
 455                         if (width2 > 1)
 456                                 width2 >>= 1;
 457                         if (height2 > 1)
 458                                 height2 >>= 1;
 459                         if (depth2 > 1)
 460                                 depth2 >>= 1;
 461                         size += width2 * height2 * depth2;
 462                 }
 463         }
 464
 465         return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 466 }
 467
 468 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 469 {
 470         int glsize;
 471         int isloaded;
 472         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 473         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 474         gltexture_t *glt;
 475         gltexturepool_t *pool;
 476         if (printeach)
 477                 Con_Print("glsize input loaded mip alpha name\n");
 478         for (pool = gltexturepoolchain;pool;pool = pool->next)
 479         {
 480                 pooltotal = 0;
 481                 pooltotalt = 0;
 482                 pooltotalp = 0;
 483                 poolloaded = 0;
 484                 poolloadedt = 0;
 485                 poolloadedp = 0;
 486                 for (glt = pool->gltchain;glt;glt = glt->chain)
 487                 {
 488                         glsize = R_CalcTexelDataSize(glt);
 489                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 490                         pooltotal++;
 491                         pooltotalt += glsize;
 492                         pooltotalp += glt->inputdatasize;
 493                         if (isloaded)
 494                         {
 495                                 poolloaded++;
 496                                 poolloadedt += glsize;
 497                                 poolloadedp += glt->inputdatasize;
 498                         }
 499                         if (printeach)
 500                                 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);
 501                 }
 502                 if (printpool)
 503                         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);
 504                 sumtotal += pooltotal;
 505                 sumtotalt += pooltotalt;
 506                 sumtotalp += pooltotalp;
 507                 sumloaded += poolloaded;
 508                 sumloadedt += poolloadedt;
 509                 sumloadedp += poolloadedp;
 510         }
 511         if (printtotal)
 512                 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);
 513 }
 514
 515 static void R_TextureStats_f(void)
 516 {
 517         R_TextureStats_Print(true, true, true);
 518 }
 519
 520 static void r_textures_start(void)
 521 {
 522         // LordHavoc: allow any alignment
 523         CHECKGLERROR
 524         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 525         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 526
 527         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 528
 529         // Disable JPEG screenshots if the DLL isn't loaded
 530         if (! JPEG_OpenLibrary ())
 531                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 532         // TODO: support png screenshots?
 533         PNG_OpenLibrary ();
 534 }
 535
 536 static void r_textures_shutdown(void)
 537 {
 538         rtexturepool_t *temp;
 539
 540         JPEG_CloseLibrary ();
 541
 542         while(gltexturepoolchain)
 543         {
 544                 temp = (rtexturepool_t *) gltexturepoolchain;
 545                 R_FreeTexturePool(&temp);
 546         }
 547
 548         resizebuffersize = 0;
 549         texturebuffersize = 0;
 550         resizebuffer = NULL;
 551         colorconvertbuffer = NULL;
 552         texturebuffer = NULL;
 553         Mem_FreePool(&texturemempool);
 554 }
 555
 556 static void r_textures_newmap(void)
 557 {
 558 }
 559
 560 void R_Textures_Init (void)
 561 {
 562         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 563         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 564         Cvar_RegisterVariable (&gl_max_size);
 565         Cvar_RegisterVariable (&gl_picmip);
 566         Cvar_RegisterVariable (&r_lerpimages);
 567         Cvar_RegisterVariable (&r_precachetextures);
 568         Cvar_RegisterVariable (&gl_texture_anisotropy);
 569         Cvar_RegisterVariable (&gl_texturecompression);
 570         Cvar_RegisterVariable (&gl_texturecompression_color);
 571         Cvar_RegisterVariable (&gl_texturecompression_normal);
 572         Cvar_RegisterVariable (&gl_texturecompression_gloss);
 573         Cvar_RegisterVariable (&gl_texturecompression_glow);
 574         Cvar_RegisterVariable (&gl_texturecompression_2d);
 575         Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
 576         Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
 577         Cvar_RegisterVariable (&gl_texturecompression_sky);
 578         Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
 579
 580         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 581 }
 582
 583 void R_Textures_Frame (void)
 584 {
 585         static int old_aniso = 0;
 586
 587         // could do procedural texture animation here, if we keep track of which
 588         // textures were accessed this frame...
 589
 590         // free the resize buffers
 591         resizebuffersize = 0;
 592         if (resizebuffer)
 593         {
 594                 Mem_Free(resizebuffer);
 595                 resizebuffer = NULL;
 596         }
 597         if (colorconvertbuffer)
 598         {
 599                 Mem_Free(colorconvertbuffer);
 600                 colorconvertbuffer = NULL;
 601         }
 602
 603         if (old_aniso != gl_texture_anisotropy.integer)
 604         {
 605                 gltexture_t *glt;
 606                 gltexturepool_t *pool;
 607                 GLint oldbindtexnum;
 608
 609                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 610
 611                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 612
 613                 CHECKGLERROR
 614                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 615                 {
 616                         for (glt = pool->gltchain;glt;glt = glt->chain)
 617                         {
 618                                 // only update already uploaded images
 619                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 620                                 {
 621                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 622
 623                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 624                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 625
 626                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 627                                 }
 628                         }
 629                 }
 630         }
 631 }
 632
 633 void R_MakeResizeBufferBigger(int size)
 634 {
 635         if (resizebuffersize < size)
 636         {
 637                 resizebuffersize = size;
 638                 if (resizebuffer)
 639                         Mem_Free(resizebuffer);
 640                 if (colorconvertbuffer)
 641                         Mem_Free(colorconvertbuffer);
 642                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 643                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 644                 if (!resizebuffer || !colorconvertbuffer)
 645                         Host_Error("R_Upload: out of memory");
 646         }
 647 }
 648
 649 static void GL_SetupTextureParameters(int flags, int texturetype)
 650 {
 651         int textureenum = gltexturetypeenums[texturetype];
 652         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 653
 654         CHECKGLERROR
 655
 656         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 657         {
 658                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 659                 if (gl_texture_anisotropy.integer != aniso)
 660                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 661                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 662         }
 663         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 664         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 665         if (gltexturetypedimensions[texturetype] >= 3)
 666         {
 667                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 668         }
 669
 670         CHECKGLERROR
 671         if (flags & TEXF_FORCENEAREST)
 672         {
 673                 if (flags & TEXF_MIPMAP)
 674                 {
 675                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 676                 }
 677                 else
 678                 {
 679                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 680                 }
 681                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 682         }
 683         else if (flags & TEXF_FORCELINEAR)
 684         {
 685                 if (flags & TEXF_MIPMAP)
 686                 {
 687                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 688                         {
 689                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 690                         }
 691                         else
 692                         {
 693                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 694                         }
 695                 }
 696                 else
 697                 {
 698                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 699                 }
 700                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 701         }
 702         else
 703         {
 704                 if (flags & TEXF_MIPMAP)
 705                 {
 706                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 707                 }
 708                 else
 709                 {
 710                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 711                 }
 712                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 713         }
 714
 715         CHECKGLERROR
 716 }
 717
 718 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 719 {
 720         int i, mip, width, height, depth;
 721         GLint oldbindtexnum;
 722         unsigned char *prevbuffer;
 723         prevbuffer = data;
 724
 725         CHECKGLERROR
 726
 727         // we need to restore the texture binding after finishing the upload
 728         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 729         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 730
 731         // these are rounded up versions of the size to do better resampling
 732         if (gl_support_arb_texture_non_power_of_two)
 733         {
 734                 width = glt->inputwidth;
 735                 height = glt->inputheight;
 736                 depth = glt->inputdepth;
 737         }
 738         else
 739         {
 740                 for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 741                 for (height = 1;height < glt->inputheight;height <<= 1);
 742                 for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 743         }
 744
 745         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 746         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 747
 748         if (prevbuffer == NULL)
 749         {
 750                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 751                 prevbuffer = resizebuffer;
 752         }
 753         else if (glt->textype->textype == TEXTYPE_PALETTE)
 754         {
 755                 // promote paletted to RGBA, so we only have to worry about RGB and
 756                 // RGBA in the rest of this code
 757                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 758                 prevbuffer = colorconvertbuffer;
 759         }
 760
 761         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 762         {
 763                 // update a portion of the image
 764                 switch(glt->texturetype)
 765                 {
 766                 case GLTEXTURETYPE_1D:
 767                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 768                         break;
 769                 case GLTEXTURETYPE_2D:
 770                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 771                         break;
 772                 case GLTEXTURETYPE_3D:
 773                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 774                         break;
 775                 default:
 776                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 777                         break;
 778                 }
 779         }
 780         else
 781         {
 782                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 783                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 784
 785                 // upload the image for the first time
 786                 glt->flags &= ~GLTEXF_UPLOAD;
 787
 788                 // cubemaps contain multiple images and thus get processed a bit differently
 789                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 790                 {
 791                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 792                         {
 793                                 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 794                                 prevbuffer = resizebuffer;
 795                         }
 796                         // picmip/max_size
 797                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 798                         {
 799                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 800                                 prevbuffer = resizebuffer;
 801                         }
 802                 }
 803                 mip = 0;
 804                 if (gl_support_texture_compression)
 805                 {
 806                         if (gl_texturecompression.integer >= 2)
 807                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
 808                         else
 809                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
 810                         CHECKGLERROR
 811                 }
 812                 switch(glt->texturetype)
 813                 {
 814                 case GLTEXTURETYPE_1D:
 815                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 816                         if (glt->flags & TEXF_MIPMAP)
 817                         {
 818                                 while (width > 1 || height > 1 || depth > 1)
 819                                 {
 820                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 821                                         prevbuffer = resizebuffer;
 822                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 823                                 }
 824                         }
 825                         break;
 826                 case GLTEXTURETYPE_2D:
 827                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 828                         if (glt->flags & TEXF_MIPMAP)
 829                         {
 830                                 while (width > 1 || height > 1 || depth > 1)
 831                                 {
 832                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 833                                         prevbuffer = resizebuffer;
 834                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 835                                 }
 836                         }
 837                         break;
 838                 case GLTEXTURETYPE_3D:
 839                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 840                         if (glt->flags & TEXF_MIPMAP)
 841                         {
 842                                 while (width > 1 || height > 1 || depth > 1)
 843                                 {
 844                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 845                                         prevbuffer = resizebuffer;
 846                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 847                                 }
 848                         }
 849                         break;
 850                 case GLTEXTURETYPE_CUBEMAP:
 851                         // convert and upload each side in turn,
 852                         // from a continuous block of input texels
 853                         texturebuffer = prevbuffer;
 854                         for (i = 0;i < 6;i++)
 855                         {
 856                                 prevbuffer = texturebuffer;
 857                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 858                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 859                                 {
 860                                         Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 861                                         prevbuffer = resizebuffer;
 862                                 }
 863                                 // picmip/max_size
 864                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 865                                 {
 866                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 867                                         prevbuffer = resizebuffer;
 868                                 }
 869                                 mip = 0;
 870                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 871                                 if (glt->flags & TEXF_MIPMAP)
 872                                 {
 873                                         while (width > 1 || height > 1 || depth > 1)
 874                                         {
 875                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 876                                                 prevbuffer = resizebuffer;
 877                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 878                                         }
 879                                 }
 880                         }
 881                         break;
 882                 }
 883                 GL_SetupTextureParameters(glt->flags, glt->texturetype);
 884         }
 885         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 886 }
 887
 888 static void R_UploadTexture (gltexture_t *glt)
 889 {
 890         if (!(glt->flags & GLTEXF_UPLOAD))
 891                 return;
 892
 893         CHECKGLERROR
 894         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 895         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 896         if (glt->inputtexels)
 897         {
 898                 Mem_Free(glt->inputtexels);
 899                 glt->inputtexels = NULL;
 900                 glt->flags |= GLTEXF_DESTROYED;
 901         }
 902         else if (glt->flags & GLTEXF_DESTROYED)
 903                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 904 }
 905
 906 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)
 907 {
 908         int i, size;
 909         gltexture_t *glt;
 910         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 911         textypeinfo_t *texinfo;
 912
 913         if (cls.state == ca_dedicated)
 914                 return NULL;
 915
 916         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 917         {
 918                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
 919                 return NULL;
 920         }
 921         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 922         {
 923                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
 924                 return NULL;
 925         }
 926
 927         texinfo = R_GetTexTypeInfo(textype, flags);
 928         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 929         if (size < 1)
 930         {
 931                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
 932                 return NULL;
 933         }
 934
 935         // clear the alpha flag if the texture has no transparent pixels
 936         switch(textype)
 937         {
 938         case TEXTYPE_PALETTE:
 939                 if (flags & TEXF_ALPHA)
 940                 {
 941                         flags &= ~TEXF_ALPHA;
 942                         if (data)
 943                         {
 944                                 for (i = 0;i < size;i++)
 945                                 {
 946                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
 947                                         {
 948                                                 flags |= TEXF_ALPHA;
 949                                                 break;
 950                                         }
 951                                 }
 952                         }
 953                 }
 954                 break;
 955         case TEXTYPE_RGB:
 956                 if (flags & TEXF_ALPHA)
 957                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
 958                 break;
 959         case TEXTYPE_RGBA:
 960                 if (flags & TEXF_ALPHA)
 961                 {
 962                         flags &= ~TEXF_ALPHA;
 963                         if (data)
 964                         {
 965                                 for (i = 3;i < size;i += 4)
 966                                 {
 967                                         if (data[i] < 255)
 968                                         {
 969                                                 flags |= TEXF_ALPHA;
 970                                                 break;
 971                                         }
 972                                 }
 973                         }
 974                 }
 975                 break;
 976         default:
 977                 Host_Error("R_LoadTexture: unknown texture type");
 978         }
 979
 980         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
 981         if (identifier)
 982                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
 983         glt->pool = pool;
 984         glt->chain = pool->gltchain;
 985         pool->gltchain = glt;
 986         glt->inputwidth = width;
 987         glt->inputheight = height;
 988         glt->inputdepth = depth;
 989         glt->flags = flags | GLTEXF_UPLOAD;
 990         glt->textype = texinfo;
 991         glt->texturetype = texturetype;
 992         glt->inputdatasize = size;
 993         glt->palette = palette;
 994         glt->glinternalformat = texinfo->glinternalformat;
 995         glt->glformat = texinfo->glformat;
 996         glt->bytesperpixel = texinfo->internalbytesperpixel;
 997         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 998         glt->texnum = -1;
 999
1000         if (data)
1001         {
1002                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1003                 memcpy(glt->inputtexels, data, size);
1004         }
1005         else
1006                 glt->inputtexels = NULL;
1007
1008         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1009         R_PrecacheTexture(glt);
1010
1011         return (rtexture_t *)glt;
1012 }
1013
1014 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1015 {
1016         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1017 }
1018
1019 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)
1020 {
1021         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1022 }
1023
1024 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)
1025 {
1026         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1027 }
1028
1029 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1030 {
1031         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1032 }
1033
1034 int R_TextureHasAlpha(rtexture_t *rt)
1035 {
1036         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1037 }
1038
1039 int R_TextureWidth(rtexture_t *rt)
1040 {
1041         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1042 }
1043
1044 int R_TextureHeight(rtexture_t *rt)
1045 {
1046         return rt ? ((gltexture_t *)rt)->inputheight : 0;
1047 }
1048
1049 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
1050 {
1051         gltexture_t *glt;
1052         if (rt == NULL)
1053                 Host_Error("R_UpdateTexture: no texture supplied");
1054         if (data == NULL)
1055                 Host_Error("R_UpdateTexture: no data supplied");
1056         glt = (gltexture_t *)rt;
1057
1058         // we need it to be uploaded before we can update a part of it
1059         if (glt->flags & GLTEXF_UPLOAD)
1060                 R_UploadTexture(glt);
1061
1062         // update part of the texture
1063         R_Upload(glt, data, x, y, 0, width, height, 1);
1064 }
1065