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 // dynamic texture (treat texnum == 0 differently)
  37 #define GLTEXF_DYNAMIC          0x00080000
  38
  39 typedef struct textypeinfo_s
  40 {
  41         int textype;
  42         int inputbytesperpixel;
  43         int internalbytesperpixel;
  44         float glinternalbytesperpixel;
  45         int glformat;
  46         int glinternalformat;
  47 }
  48 textypeinfo_t;
  49
  50 static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_RGBA   , 3};
  51 static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 3};
  52 static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_RGBA   , 4};
  53 static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 4};
  54 static textypeinfo_t textype_palette_compress       = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_RGBA   , 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         // dynamic texture stuff [11/22/2007 Black]
  84         // used to hold the texture number of dirty textures
  85         int dirtytexnum;
  86         updatecallback_t updatecallback;
  87         void *updatacallback_data;
  88         // --- [11/22/2007 Black]
  89
  90         // pointer to texturepool (check this to see if the texture is allocated)
  91         struct gltexturepool_s *pool;
  92         // pointer to next texture in texturepool chain
  93         struct gltexture_s *chain;
  94         // name of the texture (this might be removed someday), no duplicates
  95         char identifier[MAX_QPATH + 32];
  96         // original data size in *inputtexels
  97         int inputwidth, inputheight, inputdepth;
  98         // copy of the original texture(s) supplied to the upload function, for
  99         // delayed uploads (non-precached)
 100         unsigned char *inputtexels;
 101         // original data size in *inputtexels
 102         int inputdatasize;
 103         // flags supplied to the LoadTexture function
 104         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 105         int flags;
 106         // pointer to one of the textype_ structs
 107         textypeinfo_t *textype;
 108         // one of the GLTEXTURETYPE_ values
 109         int texturetype;
 110         // palette if the texture is TEXTYPE_PALETTE
 111         const unsigned int *palette;
 112         // actual stored texture size after gl_picmip and gl_max_size are applied
 113         // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
 114         int tilewidth, tileheight, tiledepth;
 115         // 1 or 6 depending on texturetype
 116         int sides;
 117         // bytes per pixel
 118         int bytesperpixel;
 119         // GL_RGB or GL_RGBA
 120         int glformat;
 121         // 3 or 4
 122         int glinternalformat;
 123 }
 124 gltexture_t;
 125
 126 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 127
 128 typedef struct gltexturepool_s
 129 {
 130         unsigned int sentinel;
 131         struct gltexture_s *gltchain;
 132         struct gltexturepool_s *next;
 133 }
 134 gltexturepool_t;
 135
 136 static gltexturepool_t *gltexturepoolchain = NULL;
 137
 138 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 139 static int resizebuffersize = 0;
 140 static unsigned char *texturebuffer;
 141 static int texturebuffersize = 0;
 142
 143 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 144 {
 145         if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
 146         {
 147                 if (flags & TEXF_ALPHA)
 148                 {
 149                         switch(textype)
 150                         {
 151                         case TEXTYPE_PALETTE:
 152                                 return &textype_palette_alpha_compress;
 153                         case TEXTYPE_RGBA:
 154                                 return &textype_rgba_alpha_compress;
 155                         default:
 156                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 157                                 return NULL;
 158                         }
 159                 }
 160                 else
 161                 {
 162                         switch(textype)
 163                         {
 164                         case TEXTYPE_PALETTE:
 165                                 return &textype_palette_compress;
 166                         case TEXTYPE_RGBA:
 167                                 return &textype_rgba_compress;
 168                         default:
 169                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 170                                 return NULL;
 171                         }
 172                 }
 173         }
 174         else
 175         {
 176                 if (flags & TEXF_ALPHA)
 177                 {
 178                         switch(textype)
 179                         {
 180                         case TEXTYPE_PALETTE:
 181                                 return &textype_palette_alpha;
 182                         case TEXTYPE_RGBA:
 183                                 return &textype_rgba_alpha;
 184                         default:
 185                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 186                                 return NULL;
 187                         }
 188                 }
 189                 else
 190                 {
 191                         switch(textype)
 192                         {
 193                         case TEXTYPE_PALETTE:
 194                                 return &textype_palette;
 195                         case TEXTYPE_RGBA:
 196                                 return &textype_rgba;
 197                         default:
 198                                 Host_Error("R_GetTexTypeInfo: unknown texture format");
 199                                 return NULL;
 200                         }
 201                 }
 202         }
 203         return NULL; // this line only to hush compiler warnings
 204 }
 205
 206 // dynamic texture code [11/22/2007 Black]
 207 void R_MarkDirtyTexture(rtexture_t *rt) {
 208         gltexture_t *glt = (gltexture_t*) rt;
 209         // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
 210         if( !glt->dirtytexnum && glt->flags & GLTEXF_DYNAMIC ) {
 211                 glt->dirtytexnum = glt->texnum;
 212                 // mark it as dirty, so R_RealGetTexture gets called
 213                 glt->texnum = 0;
 214         }
 215 }
 216
 217 void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
 218         gltexture_t *glt = (gltexture_t*) rt;
 219         glt->flags |= GLTEXF_DYNAMIC;
 220         glt->updatecallback = updatecallback;
 221         glt->updatacallback_data = data;
 222 }
 223
 224 static void R_UpdateDynamicTexture(gltexture_t *glt) {
 225         glt->texnum = glt->dirtytexnum;
 226         // reset dirtytexnum again (not dirty anymore)
 227         glt->dirtytexnum = 0;
 228         // TODO: now assert that t->texnum != 0 ?
 229         if( glt->updatecallback ) {
 230                 glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
 231         }
 232 }
 233
 234 static void R_UploadTexture(gltexture_t *t);
 235
 236 static void R_PrecacheTexture(gltexture_t *glt)
 237 {
 238         int precache;
 239         precache = false;
 240         if (glt->flags & TEXF_ALWAYSPRECACHE)
 241                 precache = true;
 242         else if (r_precachetextures.integer >= 2)
 243                 precache = true;
 244         else if (r_precachetextures.integer >= 1)
 245                 if (glt->flags & TEXF_PRECACHE)
 246                         precache = true;
 247
 248         if (precache)
 249                 R_UploadTexture(glt);
 250 }
 251
 252 int R_RealGetTexture(rtexture_t *rt)
 253 {
 254         if (rt)
 255         {
 256                 gltexture_t *glt;
 257                 glt = (gltexture_t *)rt;
 258                 if (glt->flags & GLTEXF_UPLOAD)
 259                         R_UploadTexture(glt);
 260                 if (glt->flags & GLTEXF_DYNAMIC)
 261                         R_UpdateDynamicTexture(glt);
 262
 263                 return glt->texnum;
 264         }
 265         else
 266                 return 0;
 267 }
 268
 269 void R_FreeTexture(rtexture_t *rt)
 270 {
 271         gltexture_t *glt, **gltpointer;
 272
 273         glt = (gltexture_t *)rt;
 274         if (glt == NULL)
 275                 Host_Error("R_FreeTexture: texture == NULL");
 276
 277         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 278         if (*gltpointer == glt)
 279                 *gltpointer = glt->chain;
 280         else
 281                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 282
 283         if (glt->texnum)
 284         {
 285                 CHECKGLERROR
 286                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 287         }
 288
 289         if (glt->inputtexels)
 290                 Mem_Free(glt->inputtexels);
 291         Mem_Free(glt);
 292 }
 293
 294 rtexturepool_t *R_AllocTexturePool(void)
 295 {
 296         gltexturepool_t *pool;
 297         if (texturemempool == NULL)
 298                 return NULL;
 299         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 300         if (pool == NULL)
 301                 return NULL;
 302         pool->next = gltexturepoolchain;
 303         gltexturepoolchain = pool;
 304         pool->sentinel = TEXTUREPOOL_SENTINEL;
 305         return (rtexturepool_t *)pool;
 306 }
 307
 308 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 309 {
 310         gltexturepool_t *pool, **poolpointer;
 311         if (rtexturepool == NULL)
 312                 return;
 313         if (*rtexturepool == NULL)
 314                 return;
 315         pool = (gltexturepool_t *)(*rtexturepool);
 316         *rtexturepool = NULL;
 317         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 318                 Host_Error("R_FreeTexturePool: pool already freed");
 319         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 320         if (*poolpointer == pool)
 321                 *poolpointer = pool->next;
 322         else
 323                 Host_Error("R_FreeTexturePool: pool not linked");
 324         while (pool->gltchain)
 325                 R_FreeTexture((rtexture_t *)pool->gltchain);
 326         Mem_Free(pool);
 327 }
 328
 329
 330 typedef struct glmode_s
 331 {
 332         char *name;
 333         int minification, magnification;
 334 }
 335 glmode_t;
 336
 337 static glmode_t modes[6] =
 338 {
 339         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 340         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 341         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 342         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 343         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 344         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 345 };
 346
 347 static void GL_TextureMode_f (void)
 348 {
 349         int i;
 350         GLint oldbindtexnum;
 351         gltexture_t *glt;
 352         gltexturepool_t *pool;
 353
 354         if (Cmd_Argc() == 1)
 355         {
 356                 for (i = 0;i < 6;i++)
 357                 {
 358                         if (gl_filter_min == modes[i].minification)
 359                         {
 360                                 Con_Printf("%s\n", modes[i].name);
 361                                 return;
 362                         }
 363                 }
 364                 Con_Print("current filter is unknown???\n");
 365                 return;
 366         }
 367
 368         for (i = 0;i < 6;i++)
 369                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 370                         break;
 371         if (i == 6)
 372         {
 373                 Con_Print("bad filter name\n");
 374                 return;
 375         }
 376
 377         gl_filter_min = modes[i].minification;
 378         gl_filter_mag = modes[i].magnification;
 379
 380         // change all the existing mipmap texture objects
 381         // FIXME: force renderer(/client/something?) restart instead?
 382         CHECKGLERROR
 383         for (pool = gltexturepoolchain;pool;pool = pool->next)
 384         {
 385                 for (glt = pool->gltchain;glt;glt = glt->chain)
 386                 {
 387                         // only update already uploaded images
 388                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 389                         {
 390                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 391                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 392                                 if (glt->flags & TEXF_MIPMAP)
 393                                 {
 394                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 395                                 }
 396                                 else
 397                                 {
 398                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 399                                 }
 400                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 401                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 402                         }
 403                 }
 404         }
 405 }
 406
 407 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 408 {
 409         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 410
 411         if (gl_max_size.integer > gl_max_texture_size)
 412                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 413
 414         switch (texturetype)
 415         {
 416         default:
 417         case GLTEXTURETYPE_1D:
 418         case GLTEXTURETYPE_2D:
 419                 maxsize = gl_max_texture_size;
 420                 break;
 421         case GLTEXTURETYPE_3D:
 422                 maxsize = gl_max_3d_texture_size;
 423                 break;
 424         case GLTEXTURETYPE_CUBEMAP:
 425                 maxsize = gl_max_cube_map_texture_size;
 426                 break;
 427         }
 428
 429         if (flags & TEXF_PICMIP)
 430         {
 431                 maxsize = min(maxsize, gl_max_size.integer);
 432                 picmip = gl_picmip.integer;
 433         }
 434
 435         if (outwidth)
 436         {
 437                 if (gl_support_arb_texture_non_power_of_two)
 438                         width2 = min(inwidth >> picmip, maxsize);
 439                 else
 440                 {
 441                         for (width2 = 1;width2 < inwidth;width2 <<= 1);
 442                         for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 443                 }
 444                 *outwidth = max(1, width2);
 445         }
 446         if (outheight)
 447         {
 448                 if (gl_support_arb_texture_non_power_of_two)
 449                         height2 = min(inheight >> picmip, maxsize);
 450                 else
 451                 {
 452                         for (height2 = 1;height2 < inheight;height2 <<= 1);
 453                         for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 454                 }
 455                 *outheight = max(1, height2);
 456         }
 457         if (outdepth)
 458         {
 459                 if (gl_support_arb_texture_non_power_of_two)
 460                         depth2 = min(indepth >> picmip, maxsize);
 461                 else
 462                 {
 463                         for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 464                         for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 465                 }
 466                 *outdepth = max(1, depth2);
 467         }
 468 }
 469
 470
 471 static int R_CalcTexelDataSize (gltexture_t *glt)
 472 {
 473         int width2, height2, depth2, size;
 474
 475         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 476
 477         size = width2 * height2 * depth2;
 478
 479         if (glt->flags & TEXF_MIPMAP)
 480         {
 481                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 482                 {
 483                         if (width2 > 1)
 484                                 width2 >>= 1;
 485                         if (height2 > 1)
 486                                 height2 >>= 1;
 487                         if (depth2 > 1)
 488                                 depth2 >>= 1;
 489                         size += width2 * height2 * depth2;
 490                 }
 491         }
 492
 493         return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 494 }
 495
 496 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 497 {
 498         int glsize;
 499         int isloaded;
 500         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 501         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 502         gltexture_t *glt;
 503         gltexturepool_t *pool;
 504         if (printeach)
 505                 Con_Print("glsize input loaded mip alpha name\n");
 506         for (pool = gltexturepoolchain;pool;pool = pool->next)
 507         {
 508                 pooltotal = 0;
 509                 pooltotalt = 0;
 510                 pooltotalp = 0;
 511                 poolloaded = 0;
 512                 poolloadedt = 0;
 513                 poolloadedp = 0;
 514                 for (glt = pool->gltchain;glt;glt = glt->chain)
 515                 {
 516                         glsize = R_CalcTexelDataSize(glt);
 517                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 518                         pooltotal++;
 519                         pooltotalt += glsize;
 520                         pooltotalp += glt->inputdatasize;
 521                         if (isloaded)
 522                         {
 523                                 poolloaded++;
 524                                 poolloadedt += glsize;
 525                                 poolloadedp += glt->inputdatasize;
 526                         }
 527                         if (printeach)
 528                                 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);
 529                 }
 530                 if (printpool)
 531                         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);
 532                 sumtotal += pooltotal;
 533                 sumtotalt += pooltotalt;
 534                 sumtotalp += pooltotalp;
 535                 sumloaded += poolloaded;
 536                 sumloadedt += poolloadedt;
 537                 sumloadedp += poolloadedp;
 538         }
 539         if (printtotal)
 540                 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);
 541 }
 542
 543 static void R_TextureStats_f(void)
 544 {
 545         R_TextureStats_Print(true, true, true);
 546 }
 547
 548 static void r_textures_start(void)
 549 {
 550         // LordHavoc: allow any alignment
 551         CHECKGLERROR
 552         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 553         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 554
 555         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 556
 557         // Disable JPEG screenshots if the DLL isn't loaded
 558         if (! JPEG_OpenLibrary ())
 559                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 560         // TODO: support png screenshots?
 561         PNG_OpenLibrary ();
 562 }
 563
 564 static void r_textures_shutdown(void)
 565 {
 566         rtexturepool_t *temp;
 567
 568         JPEG_CloseLibrary ();
 569
 570         while(gltexturepoolchain)
 571         {
 572                 temp = (rtexturepool_t *) gltexturepoolchain;
 573                 R_FreeTexturePool(&temp);
 574         }
 575
 576         resizebuffersize = 0;
 577         texturebuffersize = 0;
 578         resizebuffer = NULL;
 579         colorconvertbuffer = NULL;
 580         texturebuffer = NULL;
 581         Mem_FreePool(&texturemempool);
 582 }
 583
 584 static void r_textures_newmap(void)
 585 {
 586 }
 587
 588 void R_Textures_Init (void)
 589 {
 590         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 591         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 592         Cvar_RegisterVariable (&gl_max_size);
 593         Cvar_RegisterVariable (&gl_picmip);
 594         Cvar_RegisterVariable (&r_lerpimages);
 595         Cvar_RegisterVariable (&r_precachetextures);
 596         Cvar_RegisterVariable (&gl_texture_anisotropy);
 597         Cvar_RegisterVariable (&gl_texturecompression);
 598         Cvar_RegisterVariable (&gl_texturecompression_color);
 599         Cvar_RegisterVariable (&gl_texturecompression_normal);
 600         Cvar_RegisterVariable (&gl_texturecompression_gloss);
 601         Cvar_RegisterVariable (&gl_texturecompression_glow);
 602         Cvar_RegisterVariable (&gl_texturecompression_2d);
 603         Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
 604         Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
 605         Cvar_RegisterVariable (&gl_texturecompression_sky);
 606         Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
 607
 608         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 609 }
 610
 611 void R_Textures_Frame (void)
 612 {
 613         static int old_aniso = 0;
 614
 615         // could do procedural texture animation here, if we keep track of which
 616         // textures were accessed this frame...
 617
 618         // free the resize buffers
 619         resizebuffersize = 0;
 620         if (resizebuffer)
 621         {
 622                 Mem_Free(resizebuffer);
 623                 resizebuffer = NULL;
 624         }
 625         if (colorconvertbuffer)
 626         {
 627                 Mem_Free(colorconvertbuffer);
 628                 colorconvertbuffer = NULL;
 629         }
 630
 631         if (old_aniso != gl_texture_anisotropy.integer)
 632         {
 633                 gltexture_t *glt;
 634                 gltexturepool_t *pool;
 635                 GLint oldbindtexnum;
 636
 637                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 638
 639                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 640
 641                 CHECKGLERROR
 642                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 643                 {
 644                         for (glt = pool->gltchain;glt;glt = glt->chain)
 645                         {
 646                                 // only update already uploaded images
 647                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 648                                 {
 649                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 650
 651                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 652                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 653
 654                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 655                                 }
 656                         }
 657                 }
 658         }
 659 }
 660
 661 void R_MakeResizeBufferBigger(int size)
 662 {
 663         if (resizebuffersize < size)
 664         {
 665                 resizebuffersize = size;
 666                 if (resizebuffer)
 667                         Mem_Free(resizebuffer);
 668                 if (colorconvertbuffer)
 669                         Mem_Free(colorconvertbuffer);
 670                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 671                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 672                 if (!resizebuffer || !colorconvertbuffer)
 673                         Host_Error("R_Upload: out of memory");
 674         }
 675 }
 676
 677 static void GL_SetupTextureParameters(int flags, int texturetype)
 678 {
 679         int textureenum = gltexturetypeenums[texturetype];
 680         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 681
 682         CHECKGLERROR
 683
 684         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 685         {
 686                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 687                 if (gl_texture_anisotropy.integer != aniso)
 688                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 689                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 690         }
 691         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 692         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 693         if (gltexturetypedimensions[texturetype] >= 3)
 694         {
 695                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 696         }
 697
 698         CHECKGLERROR
 699         if (flags & TEXF_FORCENEAREST)
 700         {
 701                 if (flags & TEXF_MIPMAP)
 702                 {
 703                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 704                 }
 705                 else
 706                 {
 707                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 708                 }
 709                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 710         }
 711         else if (flags & TEXF_FORCELINEAR)
 712         {
 713                 if (flags & TEXF_MIPMAP)
 714                 {
 715                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 716                         {
 717                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 718                         }
 719                         else
 720                         {
 721                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 722                         }
 723                 }
 724                 else
 725                 {
 726                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 727                 }
 728                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 729         }
 730         else
 731         {
 732                 if (flags & TEXF_MIPMAP)
 733                 {
 734                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 735                 }
 736                 else
 737                 {
 738                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 739                 }
 740                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 741         }
 742
 743         CHECKGLERROR
 744 }
 745
 746 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 747 {
 748         int i, mip, width, height, depth;
 749         GLint oldbindtexnum;
 750         unsigned char *prevbuffer;
 751         prevbuffer = data;
 752
 753         CHECKGLERROR
 754
 755         // we need to restore the texture binding after finishing the upload
 756         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 757         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 758
 759         // these are rounded up versions of the size to do better resampling
 760         if (gl_support_arb_texture_non_power_of_two)
 761         {
 762                 width = glt->inputwidth;
 763                 height = glt->inputheight;
 764                 depth = glt->inputdepth;
 765         }
 766         else
 767         {
 768                 for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 769                 for (height = 1;height < glt->inputheight;height <<= 1);
 770                 for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 771         }
 772
 773         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 774         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 775
 776         if (prevbuffer == NULL)
 777         {
 778                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 779                 prevbuffer = resizebuffer;
 780         }
 781         else if (glt->textype->textype == TEXTYPE_PALETTE)
 782         {
 783                 // promote paletted to RGBA, so we only have to worry about RGB and
 784                 // RGBA in the rest of this code
 785                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 786                 prevbuffer = colorconvertbuffer;
 787         }
 788
 789         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 790         {
 791                 // update a portion of the image
 792                 switch(glt->texturetype)
 793                 {
 794                 case GLTEXTURETYPE_1D:
 795                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 796                         break;
 797                 case GLTEXTURETYPE_2D:
 798                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 799                         break;
 800                 case GLTEXTURETYPE_3D:
 801                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 802                         break;
 803                 default:
 804                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 805                         break;
 806                 }
 807         }
 808         else
 809         {
 810                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 811                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 812
 813                 // upload the image for the first time
 814                 glt->flags &= ~GLTEXF_UPLOAD;
 815
 816                 // cubemaps contain multiple images and thus get processed a bit differently
 817                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 818                 {
 819                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 820                         {
 821                                 Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 822                                 prevbuffer = resizebuffer;
 823                         }
 824                         // picmip/max_size
 825                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 826                         {
 827                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 828                                 prevbuffer = resizebuffer;
 829                         }
 830                 }
 831                 mip = 0;
 832                 if (gl_support_texture_compression)
 833                 {
 834                         if (gl_texturecompression.integer >= 2)
 835                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
 836                         else
 837                                 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
 838                         CHECKGLERROR
 839                 }
 840                 switch(glt->texturetype)
 841                 {
 842                 case GLTEXTURETYPE_1D:
 843                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 844                         if (glt->flags & TEXF_MIPMAP)
 845                         {
 846                                 while (width > 1 || height > 1 || depth > 1)
 847                                 {
 848                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 849                                         prevbuffer = resizebuffer;
 850                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 851                                 }
 852                         }
 853                         break;
 854                 case GLTEXTURETYPE_2D:
 855                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 856                         if (glt->flags & TEXF_MIPMAP)
 857                         {
 858                                 while (width > 1 || height > 1 || depth > 1)
 859                                 {
 860                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 861                                         prevbuffer = resizebuffer;
 862                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 863                                 }
 864                         }
 865                         break;
 866                 case GLTEXTURETYPE_3D:
 867                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 868                         if (glt->flags & TEXF_MIPMAP)
 869                         {
 870                                 while (width > 1 || height > 1 || depth > 1)
 871                                 {
 872                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 873                                         prevbuffer = resizebuffer;
 874                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 875                                 }
 876                         }
 877                         break;
 878                 case GLTEXTURETYPE_CUBEMAP:
 879                         // convert and upload each side in turn,
 880                         // from a continuous block of input texels
 881                         texturebuffer = prevbuffer;
 882                         for (i = 0;i < 6;i++)
 883                         {
 884                                 prevbuffer = texturebuffer;
 885                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 886                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 887                                 {
 888                                         Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
 889                                         prevbuffer = resizebuffer;
 890                                 }
 891                                 // picmip/max_size
 892                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 893                                 {
 894                                         Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
 895                                         prevbuffer = resizebuffer;
 896                                 }
 897                                 mip = 0;
 898                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 899                                 if (glt->flags & TEXF_MIPMAP)
 900                                 {
 901                                         while (width > 1 || height > 1 || depth > 1)
 902                                         {
 903                                                 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
 904                                                 prevbuffer = resizebuffer;
 905                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 906                                         }
 907                                 }
 908                         }
 909                         break;
 910                 }
 911                 GL_SetupTextureParameters(glt->flags, glt->texturetype);
 912         }
 913         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 914 }
 915
 916 static void R_UploadTexture (gltexture_t *glt)
 917 {
 918         if (!(glt->flags & GLTEXF_UPLOAD))
 919                 return;
 920
 921         CHECKGLERROR
 922         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 923         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 924         if (glt->inputtexels)
 925         {
 926                 Mem_Free(glt->inputtexels);
 927                 glt->inputtexels = NULL;
 928                 glt->flags |= GLTEXF_DESTROYED;
 929         }
 930         else if (glt->flags & GLTEXF_DESTROYED)
 931                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 932 }
 933
 934 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)
 935 {
 936         int i, size;
 937         gltexture_t *glt;
 938         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 939         textypeinfo_t *texinfo;
 940
 941         if (cls.state == ca_dedicated)
 942                 return NULL;
 943
 944         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 945         {
 946                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
 947                 return NULL;
 948         }
 949         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 950         {
 951                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
 952                 return NULL;
 953         }
 954
 955         texinfo = R_GetTexTypeInfo(textype, flags);
 956         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 957         if (size < 1)
 958         {
 959                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
 960                 return NULL;
 961         }
 962
 963         // clear the alpha flag if the texture has no transparent pixels
 964         switch(textype)
 965         {
 966         case TEXTYPE_PALETTE:
 967                 if (flags & TEXF_ALPHA)
 968                 {
 969                         flags &= ~TEXF_ALPHA;
 970                         if (data)
 971                         {
 972                                 for (i = 0;i < size;i++)
 973                                 {
 974                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
 975                                         {
 976                                                 flags |= TEXF_ALPHA;
 977                                                 break;
 978                                         }
 979                                 }
 980                         }
 981                 }
 982                 break;
 983         case TEXTYPE_RGBA:
 984                 if (flags & TEXF_ALPHA)
 985                 {
 986                         flags &= ~TEXF_ALPHA;
 987                         if (data)
 988                         {
 989                                 for (i = 3;i < size;i += 4)
 990                                 {
 991                                         if (data[i] < 255)
 992                                         {
 993                                                 flags |= TEXF_ALPHA;
 994                                                 break;
 995                                         }
 996                                 }
 997                         }
 998                 }
 999                 break;
1000         default:
1001                 Host_Error("R_LoadTexture: unknown texture type");
1002         }
1003
1004         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
1005         if (identifier)
1006                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
1007         glt->pool = pool;
1008         glt->chain = pool->gltchain;
1009         pool->gltchain = glt;
1010         glt->inputwidth = width;
1011         glt->inputheight = height;
1012         glt->inputdepth = depth;
1013         glt->flags = flags | GLTEXF_UPLOAD;
1014         glt->textype = texinfo;
1015         glt->texturetype = texturetype;
1016         glt->inputdatasize = size;
1017         glt->palette = palette;
1018         glt->glinternalformat = texinfo->glinternalformat;
1019         glt->glformat = texinfo->glformat;
1020         glt->bytesperpixel = texinfo->internalbytesperpixel;
1021         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
1022         glt->texnum = -1;
1023         // init the dynamic texture attributes, too [11/22/2007 Black]
1024         glt->dirtytexnum = 0;
1025         glt->updatecallback = NULL;
1026         glt->updatacallback_data = NULL;
1027
1028         if (data)
1029         {
1030                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1031                 memcpy(glt->inputtexels, data, size);
1032         }
1033         else
1034                 glt->inputtexels = NULL;
1035
1036         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1037         R_PrecacheTexture(glt);
1038
1039         return (rtexture_t *)glt;
1040 }
1041
1042 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1043 {
1044         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1045 }
1046
1047 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)
1048 {
1049         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1050 }
1051
1052 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)
1053 {
1054         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1055 }
1056
1057 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1058 {
1059         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1060 }
1061
1062 int R_TextureHasAlpha(rtexture_t *rt)
1063 {
1064         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1065 }
1066
1067 int R_TextureWidth(rtexture_t *rt)
1068 {
1069         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1070 }
1071
1072 int R_TextureHeight(rtexture_t *rt)
1073 {
1074         return rt ? ((gltexture_t *)rt)->inputheight : 0;
1075 }
1076
1077 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
1078 {
1079         gltexture_t *glt;
1080         if (rt == NULL)
1081                 Host_Error("R_UpdateTexture: no texture supplied");
1082         if (data == NULL)
1083                 Host_Error("R_UpdateTexture: no data supplied");
1084         glt = (gltexture_t *)rt;
1085
1086         // we need it to be uploaded before we can update a part of it
1087         if (glt->flags & GLTEXF_UPLOAD)
1088                 R_UploadTexture(glt);
1089
1090         // update part of the texture
1091         R_Upload(glt, data, x, y, 0, width, height, 1);
1092 }
1093