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
  13 int             gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
  14 int             gl_filter_mag = GL_LINEAR;
  15
  16
  17 static mempool_t *texturemempool;
  18
  19 // note: this must not conflict with TEXF_ flags in r_textures.h
  20 // cleared when a texture is uploaded
  21 #define GLTEXF_UPLOAD 0x00010000
  22 // bitmask for mismatch checking
  23 #define GLTEXF_IMPORTANTBITS (0)
  24 // set when image is uploaded and freed
  25 #define GLTEXF_DESTROYED 0x00040000
  26
  27 typedef struct textypeinfo_s
  28 {
  29         int textype;
  30         int inputbytesperpixel;
  31         int internalbytesperpixel;
  32         int glformat;
  33         int glinternalformat;
  34 }
  35 textypeinfo_t;
  36
  37 static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
  38 static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
  39 static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
  40 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
  41 static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
  42
  43 #define GLTEXTURETYPE_1D 0
  44 #define GLTEXTURETYPE_2D 1
  45 #define GLTEXTURETYPE_3D 2
  46 #define GLTEXTURETYPE_CUBEMAP 3
  47
  48 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
  49 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
  50 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
  51 static int cubemapside[6] =
  52 {
  53         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  54         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  55         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  56         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  57         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  58         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  59 };
  60
  61 typedef struct gltexture_s
  62 {
  63         // this field is exposed to the R_GetTexture macro, for speed reasons
  64         // (must be identical in rtexture_t)
  65         int texnum; // GL texture slot number
  66
  67         // pointer to texturepool (check this to see if the texture is allocated)
  68         struct gltexturepool_s *pool;
  69         // pointer to next texture in texturepool chain
  70         struct gltexture_s *chain;
  71         // name of the texture (this might be removed someday), no duplicates
  72         char identifier[32];
  73         // original data size in *inputtexels
  74         int inputwidth, inputheight, inputdepth;
  75         // copy of the original texture(s) supplied to the upload function, for
  76         // delayed uploads (non-precached)
  77         unsigned char *inputtexels;
  78         // original data size in *inputtexels
  79         int inputdatasize;
  80         // flags supplied to the LoadTexture function
  81         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
  82         int flags;
  83         // pointer to one of the textype_ structs
  84         textypeinfo_t *textype;
  85         // one of the GLTEXTURETYPE_ values
  86         int texturetype;
  87         // palette if the texture is TEXTYPE_PALETTE
  88         const unsigned int *palette;
  89         // power of 2 size, after gl_picmip and gl_max_size are applied
  90         int tilewidth, tileheight, tiledepth;
  91         // 1 or 6 depending on texturetype
  92         int sides;
  93         // bytes per pixel
  94         int bytesperpixel;
  95         // GL_RGB or GL_RGBA
  96         int glformat;
  97         // 3 or 4
  98         int glinternalformat;
  99 }
 100 gltexture_t;
 101
 102 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 103
 104 typedef struct gltexturepool_s
 105 {
 106         unsigned int sentinel;
 107         struct gltexture_s *gltchain;
 108         struct gltexturepool_s *next;
 109 }
 110 gltexturepool_t;
 111
 112 static gltexturepool_t *gltexturepoolchain = NULL;
 113
 114 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 115 static int resizebuffersize = 0;
 116 static unsigned char *texturebuffer;
 117 static int texturebuffersize = 0;
 118
 119 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 120 {
 121         if (flags & TEXF_ALPHA)
 122         {
 123                 switch(textype)
 124                 {
 125                 case TEXTYPE_PALETTE:
 126                         return &textype_palette_alpha;
 127                 case TEXTYPE_RGB:
 128                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
 129                         return NULL;
 130                 case TEXTYPE_RGBA:
 131                         return &textype_rgba_alpha;
 132                 default:
 133                         Host_Error("R_GetTexTypeInfo: unknown texture format");
 134                         return NULL;
 135                 }
 136         }
 137         else
 138         {
 139                 switch(textype)
 140                 {
 141                 case TEXTYPE_PALETTE:
 142                         return &textype_palette;
 143                 case TEXTYPE_RGB:
 144                         return &textype_rgb;
 145                 case TEXTYPE_RGBA:
 146                         return &textype_rgba;
 147                 default:
 148                         Host_Error("R_GetTexTypeInfo: unknown texture format");
 149                         return NULL;
 150                 }
 151         }
 152 }
 153
 154 static void R_UploadTexture(gltexture_t *t);
 155
 156 static void R_PrecacheTexture(gltexture_t *glt)
 157 {
 158         int precache;
 159         precache = false;
 160         if (glt->flags & TEXF_ALWAYSPRECACHE)
 161                 precache = true;
 162         else if (r_precachetextures.integer >= 2)
 163                 precache = true;
 164         else if (r_precachetextures.integer >= 1)
 165                 if (glt->flags & TEXF_PRECACHE)
 166                         precache = true;
 167
 168         if (precache)
 169                 R_UploadTexture(glt);
 170 }
 171
 172 int R_RealGetTexture(rtexture_t *rt)
 173 {
 174         if (rt)
 175         {
 176                 gltexture_t *glt;
 177                 glt = (gltexture_t *)rt;
 178                 if (glt->flags & GLTEXF_UPLOAD)
 179                         R_UploadTexture(glt);
 180                 return glt->texnum;
 181         }
 182         else
 183                 return 0;
 184 }
 185
 186 void R_FreeTexture(rtexture_t *rt)
 187 {
 188         gltexture_t *glt, **gltpointer;
 189
 190         glt = (gltexture_t *)rt;
 191         if (glt == NULL)
 192                 Host_Error("R_FreeTexture: texture == NULL");
 193
 194         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 195         if (*gltpointer == glt)
 196                 *gltpointer = glt->chain;
 197         else
 198                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 199
 200         if (glt->texnum)
 201         {
 202                 CHECKGLERROR
 203                 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 204         }
 205
 206         if (glt->inputtexels)
 207                 Mem_Free(glt->inputtexels);
 208         Mem_Free(glt);
 209 }
 210
 211 rtexturepool_t *R_AllocTexturePool(void)
 212 {
 213         gltexturepool_t *pool;
 214         if (texturemempool == NULL)
 215                 return NULL;
 216         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 217         if (pool == NULL)
 218                 return NULL;
 219         pool->next = gltexturepoolchain;
 220         gltexturepoolchain = pool;
 221         pool->sentinel = TEXTUREPOOL_SENTINEL;
 222         return (rtexturepool_t *)pool;
 223 }
 224
 225 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 226 {
 227         gltexturepool_t *pool, **poolpointer;
 228         if (rtexturepool == NULL)
 229                 return;
 230         if (*rtexturepool == NULL)
 231                 return;
 232         pool = (gltexturepool_t *)(*rtexturepool);
 233         *rtexturepool = NULL;
 234         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 235                 Host_Error("R_FreeTexturePool: pool already freed");
 236         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 237         if (*poolpointer == pool)
 238                 *poolpointer = pool->next;
 239         else
 240                 Host_Error("R_FreeTexturePool: pool not linked");
 241         while (pool->gltchain)
 242                 R_FreeTexture((rtexture_t *)pool->gltchain);
 243         Mem_Free(pool);
 244 }
 245
 246
 247 typedef struct glmode_s
 248 {
 249         char *name;
 250         int minification, magnification;
 251 }
 252 glmode_t;
 253
 254 static glmode_t modes[6] =
 255 {
 256         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 257         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 258         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 259         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 260         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 261         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 262 };
 263
 264 static void GL_TextureMode_f (void)
 265 {
 266         int i;
 267         GLint oldbindtexnum;
 268         gltexture_t *glt;
 269         gltexturepool_t *pool;
 270
 271         if (Cmd_Argc() == 1)
 272         {
 273                 for (i = 0;i < 6;i++)
 274                 {
 275                         if (gl_filter_min == modes[i].minification)
 276                         {
 277                                 Con_Printf("%s\n", modes[i].name);
 278                                 return;
 279                         }
 280                 }
 281                 Con_Print("current filter is unknown???\n");
 282                 return;
 283         }
 284
 285         for (i = 0;i < 6;i++)
 286                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 287                         break;
 288         if (i == 6)
 289         {
 290                 Con_Print("bad filter name\n");
 291                 return;
 292         }
 293
 294         gl_filter_min = modes[i].minification;
 295         gl_filter_mag = modes[i].magnification;
 296
 297         // change all the existing mipmap texture objects
 298         // FIXME: force renderer(/client/something?) restart instead?
 299         CHECKGLERROR
 300         for (pool = gltexturepoolchain;pool;pool = pool->next)
 301         {
 302                 for (glt = pool->gltchain;glt;glt = glt->chain)
 303                 {
 304                         // only update already uploaded images
 305                         if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 306                         {
 307                                 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 308                                 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 309                                 if (glt->flags & TEXF_MIPMAP)
 310                                 {
 311                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 312                                 }
 313                                 else
 314                                 {
 315                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 316                                 }
 317                                 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 318                                 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 319                         }
 320                 }
 321         }
 322 }
 323
 324 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 325 {
 326         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 327
 328         if (gl_max_size.integer > gl_max_texture_size)
 329                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 330
 331         switch (texturetype)
 332         {
 333         default:
 334         case GLTEXTURETYPE_1D:
 335         case GLTEXTURETYPE_2D:
 336                 maxsize = gl_max_texture_size;
 337                 break;
 338         case GLTEXTURETYPE_3D:
 339                 maxsize = gl_max_3d_texture_size;
 340                 break;
 341         case GLTEXTURETYPE_CUBEMAP:
 342                 maxsize = gl_max_cube_map_texture_size;
 343                 break;
 344         }
 345
 346         if (flags & TEXF_PICMIP)
 347         {
 348                 maxsize = min(maxsize, gl_max_size.integer);
 349                 picmip = gl_picmip.integer;
 350         }
 351
 352         if (outwidth)
 353         {
 354                 for (width2 = 1;width2 < inwidth;width2 <<= 1);
 355                 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 356                 *outwidth = max(1, width2);
 357         }
 358         if (outheight)
 359         {
 360                 for (height2 = 1;height2 < inheight;height2 <<= 1);
 361                 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 362                 *outheight = max(1, height2);
 363         }
 364         if (outdepth)
 365         {
 366                 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 367                 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 368                 *outdepth = max(1, depth2);
 369         }
 370 }
 371
 372
 373 static int R_CalcTexelDataSize (gltexture_t *glt)
 374 {
 375         int width2, height2, depth2, size;
 376
 377         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 378
 379         size = width2 * height2 * depth2;
 380
 381         if (glt->flags & TEXF_MIPMAP)
 382         {
 383                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 384                 {
 385                         if (width2 > 1)
 386                                 width2 >>= 1;
 387                         if (height2 > 1)
 388                                 height2 >>= 1;
 389                         if (depth2 > 1)
 390                                 depth2 >>= 1;
 391                         size += width2 * height2 * depth2;
 392                 }
 393         }
 394
 395         return size * glt->textype->internalbytesperpixel * glt->sides;
 396 }
 397
 398 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 399 {
 400         int glsize;
 401         int isloaded;
 402         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 403         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 404         gltexture_t *glt;
 405         gltexturepool_t *pool;
 406         if (printeach)
 407                 Con_Print("glsize input loaded mip alpha name\n");
 408         for (pool = gltexturepoolchain;pool;pool = pool->next)
 409         {
 410                 pooltotal = 0;
 411                 pooltotalt = 0;
 412                 pooltotalp = 0;
 413                 poolloaded = 0;
 414                 poolloadedt = 0;
 415                 poolloadedp = 0;
 416                 for (glt = pool->gltchain;glt;glt = glt->chain)
 417                 {
 418                         glsize = R_CalcTexelDataSize(glt);
 419                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 420                         pooltotal++;
 421                         pooltotalt += glsize;
 422                         pooltotalp += glt->inputdatasize;
 423                         if (isloaded)
 424                         {
 425                                 poolloaded++;
 426                                 poolloadedt += glsize;
 427                                 poolloadedp += glt->inputdatasize;
 428                         }
 429                         if (printeach)
 430                                 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);
 431                 }
 432                 if (printpool)
 433                         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);
 434                 sumtotal += pooltotal;
 435                 sumtotalt += pooltotalt;
 436                 sumtotalp += pooltotalp;
 437                 sumloaded += poolloaded;
 438                 sumloadedt += poolloadedt;
 439                 sumloadedp += poolloadedp;
 440         }
 441         if (printtotal)
 442                 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);
 443 }
 444
 445 static void R_TextureStats_f(void)
 446 {
 447         R_TextureStats_Print(true, true, true);
 448 }
 449
 450 static void r_textures_start(void)
 451 {
 452         // LordHavoc: allow any alignment
 453         CHECKGLERROR
 454         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
 455         qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 456
 457         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 458
 459         // Disable JPEG screenshots if the DLL isn't loaded
 460         if (! JPEG_OpenLibrary ())
 461                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 462         // TODO: support png screenshots?
 463         PNG_OpenLibrary ();
 464 }
 465
 466 static void r_textures_shutdown(void)
 467 {
 468         rtexturepool_t *temp;
 469
 470         JPEG_CloseLibrary ();
 471
 472         while(gltexturepoolchain)
 473         {
 474                 temp = (rtexturepool_t *) gltexturepoolchain;
 475                 R_FreeTexturePool(&temp);
 476         }
 477
 478         resizebuffersize = 0;
 479         texturebuffersize = 0;
 480         resizebuffer = NULL;
 481         colorconvertbuffer = NULL;
 482         texturebuffer = NULL;
 483         Mem_FreePool(&texturemempool);
 484 }
 485
 486 static void r_textures_newmap(void)
 487 {
 488 }
 489
 490 void R_Textures_Init (void)
 491 {
 492         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
 493         Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
 494         Cvar_RegisterVariable (&gl_max_size);
 495         Cvar_RegisterVariable (&gl_picmip);
 496         Cvar_RegisterVariable (&r_lerpimages);
 497         Cvar_RegisterVariable (&r_precachetextures);
 498         Cvar_RegisterVariable (&gl_texture_anisotropy);
 499
 500         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 501 }
 502
 503 void R_Textures_Frame (void)
 504 {
 505         static int old_aniso = 0;
 506
 507         // could do procedural texture animation here, if we keep track of which
 508         // textures were accessed this frame...
 509
 510         // free the resize buffers
 511         resizebuffersize = 0;
 512         if (resizebuffer)
 513         {
 514                 Mem_Free(resizebuffer);
 515                 resizebuffer = NULL;
 516         }
 517         if (colorconvertbuffer)
 518         {
 519                 Mem_Free(colorconvertbuffer);
 520                 colorconvertbuffer = NULL;
 521         }
 522
 523         if (old_aniso != gl_texture_anisotropy.integer)
 524         {
 525                 gltexture_t *glt;
 526                 gltexturepool_t *pool;
 527                 GLint oldbindtexnum;
 528
 529                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 530
 531                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 532
 533                 CHECKGLERROR
 534                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 535                 {
 536                         for (glt = pool->gltchain;glt;glt = glt->chain)
 537                         {
 538                                 // only update already uploaded images
 539                                 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
 540                                 {
 541                                         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 542
 543                                         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 544                                         qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 545
 546                                         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 547                                 }
 548                         }
 549                 }
 550         }
 551 }
 552
 553 void R_MakeResizeBufferBigger(int size)
 554 {
 555         if (resizebuffersize < size)
 556         {
 557                 resizebuffersize = size;
 558                 if (resizebuffer)
 559                         Mem_Free(resizebuffer);
 560                 if (colorconvertbuffer)
 561                         Mem_Free(colorconvertbuffer);
 562                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 563                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 564                 if (!resizebuffer || !colorconvertbuffer)
 565                         Host_Error("R_Upload: out of memory");
 566         }
 567 }
 568
 569 static void GL_SetupTextureParameters(int flags, int texturetype)
 570 {
 571         int textureenum = gltexturetypeenums[texturetype];
 572         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 573
 574         CHECKGLERROR
 575
 576         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 577         {
 578                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 579                 if (gl_texture_anisotropy.integer != aniso)
 580                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 581                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 582         }
 583         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 584         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 585         if (gltexturetypedimensions[texturetype] >= 3)
 586         {
 587                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 588         }
 589
 590         CHECKGLERROR
 591         if (flags & TEXF_FORCENEAREST)
 592         {
 593                 if (flags & TEXF_MIPMAP)
 594                 {
 595                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 596                 }
 597                 else
 598                 {
 599                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 600                 }
 601                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 602         }
 603         else if (flags & TEXF_FORCELINEAR)
 604         {
 605                 if (flags & TEXF_MIPMAP)
 606                 {
 607                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 608                         {
 609                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 610                         }
 611                         else
 612                         {
 613                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 614                         }
 615                 }
 616                 else
 617                 {
 618                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 619                 }
 620                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 621         }
 622         else
 623         {
 624                 if (flags & TEXF_MIPMAP)
 625                 {
 626                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 627                 }
 628                 else
 629                 {
 630                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 631                 }
 632                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 633         }
 634
 635         CHECKGLERROR
 636 }
 637
 638 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 639 {
 640         int i, mip, width, height, depth;
 641         GLint oldbindtexnum;
 642         unsigned char *prevbuffer;
 643         prevbuffer = data;
 644
 645         CHECKGLERROR
 646
 647         // we need to restore the texture binding after finishing the upload
 648         qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 649         qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 650
 651         // these are rounded up versions of the size to do better resampling
 652         for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
 653         for (height = 1;height < glt->inputheight;height <<= 1);
 654         for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 655
 656         R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
 657         R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 658
 659         if (prevbuffer == NULL)
 660         {
 661                 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
 662                 prevbuffer = resizebuffer;
 663         }
 664         else if (glt->textype->textype == TEXTYPE_PALETTE)
 665         {
 666                 // promote paletted to RGBA, so we only have to worry about RGB and
 667                 // RGBA in the rest of this code
 668                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
 669                 prevbuffer = colorconvertbuffer;
 670         }
 671
 672         if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 673         {
 674                 // update a portion of the image
 675                 switch(glt->texturetype)
 676                 {
 677                 case GLTEXTURETYPE_1D:
 678                         qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 679                         break;
 680                 case GLTEXTURETYPE_2D:
 681                         qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 682                         break;
 683                 case GLTEXTURETYPE_3D:
 684                         qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 685                         break;
 686                 default:
 687                         Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
 688                         break;
 689                 }
 690         }
 691         else
 692         {
 693                 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
 694                         Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
 695
 696                 // upload the image for the first time
 697                 glt->flags &= ~GLTEXF_UPLOAD;
 698
 699                 // cubemaps contain multiple images and thus get processed a bit differently
 700                 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 701                 {
 702                         if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 703                         {
 704                                 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 705                                 prevbuffer = resizebuffer;
 706                         }
 707                         // picmip/max_size
 708                         while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 709                         {
 710                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 711                                 prevbuffer = resizebuffer;
 712                         }
 713                 }
 714                 mip = 0;
 715                 switch(glt->texturetype)
 716                 {
 717                 case GLTEXTURETYPE_1D:
 718                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 719                         if (glt->flags & TEXF_MIPMAP)
 720                         {
 721                                 while (width > 1 || height > 1 || depth > 1)
 722                                 {
 723                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 724                                         prevbuffer = resizebuffer;
 725                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 726                                 }
 727                         }
 728                         break;
 729                 case GLTEXTURETYPE_2D:
 730                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 731                         if (glt->flags & TEXF_MIPMAP)
 732                         {
 733                                 while (width > 1 || height > 1 || depth > 1)
 734                                 {
 735                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 736                                         prevbuffer = resizebuffer;
 737                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 738                                 }
 739                         }
 740                         break;
 741                 case GLTEXTURETYPE_3D:
 742                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 743                         if (glt->flags & TEXF_MIPMAP)
 744                         {
 745                                 while (width > 1 || height > 1 || depth > 1)
 746                                 {
 747                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 748                                         prevbuffer = resizebuffer;
 749                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 750                                 }
 751                         }
 752                         break;
 753                 case GLTEXTURETYPE_CUBEMAP:
 754                         // convert and upload each side in turn,
 755                         // from a continuous block of input texels
 756                         texturebuffer = prevbuffer;
 757                         for (i = 0;i < 6;i++)
 758                         {
 759                                 prevbuffer = texturebuffer;
 760                                 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
 761                                 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
 762                                 {
 763                                         Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
 764                                         prevbuffer = resizebuffer;
 765                                 }
 766                                 // picmip/max_size
 767                                 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
 768                                 {
 769                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
 770                                         prevbuffer = resizebuffer;
 771                                 }
 772                                 mip = 0;
 773                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 774                                 if (glt->flags & TEXF_MIPMAP)
 775                                 {
 776                                         while (width > 1 || height > 1 || depth > 1)
 777                                         {
 778                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
 779                                                 prevbuffer = resizebuffer;
 780                                                 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
 781                                         }
 782                                 }
 783                         }
 784                         break;
 785                 }
 786                 GL_SetupTextureParameters(glt->flags, glt->texturetype);
 787         }
 788         qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 789 }
 790
 791 static void R_UploadTexture (gltexture_t *glt)
 792 {
 793         if (!(glt->flags & GLTEXF_UPLOAD))
 794                 return;
 795
 796         CHECKGLERROR
 797         qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 798         R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
 799         if (glt->inputtexels)
 800         {
 801                 Mem_Free(glt->inputtexels);
 802                 glt->inputtexels = NULL;
 803                 glt->flags |= GLTEXF_DESTROYED;
 804         }
 805         else if (glt->flags & GLTEXF_DESTROYED)
 806                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 807 }
 808
 809 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)
 810 {
 811         int i, size;
 812         gltexture_t *glt;
 813         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 814         textypeinfo_t *texinfo;
 815
 816         if (cls.state == ca_dedicated)
 817                 return NULL;
 818
 819         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
 820         {
 821                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
 822                 return NULL;
 823         }
 824         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
 825         {
 826                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
 827                 return NULL;
 828         }
 829
 830         texinfo = R_GetTexTypeInfo(textype, flags);
 831         size = width * height * depth * sides * texinfo->inputbytesperpixel;
 832         if (size < 1)
 833         {
 834                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
 835                 return NULL;
 836         }
 837
 838         // clear the alpha flag if the texture has no transparent pixels
 839         switch(textype)
 840         {
 841         case TEXTYPE_PALETTE:
 842                 if (flags & TEXF_ALPHA)
 843                 {
 844                         flags &= ~TEXF_ALPHA;
 845                         if (data)
 846                         {
 847                                 for (i = 0;i < size;i++)
 848                                 {
 849                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
 850                                         {
 851                                                 flags |= TEXF_ALPHA;
 852                                                 break;
 853                                         }
 854                                 }
 855                         }
 856                 }
 857                 break;
 858         case TEXTYPE_RGB:
 859                 if (flags & TEXF_ALPHA)
 860                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
 861                 break;
 862         case TEXTYPE_RGBA:
 863                 if (flags & TEXF_ALPHA)
 864                 {
 865                         flags &= ~TEXF_ALPHA;
 866                         if (data)
 867                         {
 868                                 for (i = 3;i < size;i += 4)
 869                                 {
 870                                         if (data[i] < 255)
 871                                         {
 872                                                 flags |= TEXF_ALPHA;
 873                                                 break;
 874                                         }
 875                                 }
 876                         }
 877                 }
 878                 break;
 879         default:
 880                 Host_Error("R_LoadTexture: unknown texture type");
 881         }
 882
 883         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
 884         if (identifier)
 885                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
 886         glt->pool = pool;
 887         glt->chain = pool->gltchain;
 888         pool->gltchain = glt;
 889         glt->inputwidth = width;
 890         glt->inputheight = height;
 891         glt->inputdepth = depth;
 892         glt->flags = flags | GLTEXF_UPLOAD;
 893         glt->textype = texinfo;
 894         glt->texturetype = texturetype;
 895         glt->inputdatasize = size;
 896         glt->palette = palette;
 897         glt->glinternalformat = texinfo->glinternalformat;
 898         glt->glformat = texinfo->glformat;
 899         glt->bytesperpixel = texinfo->internalbytesperpixel;
 900         glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
 901         glt->texnum = -1;
 902
 903         if (data)
 904         {
 905                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
 906                 memcpy(glt->inputtexels, data, size);
 907         }
 908         else
 909                 glt->inputtexels = NULL;
 910
 911         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
 912         R_PrecacheTexture(glt);
 913
 914         return (rtexture_t *)glt;
 915 }
 916
 917 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
 918 {
 919         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
 920 }
 921
 922 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)
 923 {
 924         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
 925 }
 926
 927 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)
 928 {
 929         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
 930 }
 931
 932 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
 933 {
 934         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
 935 }
 936
 937 int R_TextureHasAlpha(rtexture_t *rt)
 938 {
 939         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
 940 }
 941
 942 int R_TextureWidth(rtexture_t *rt)
 943 {
 944         return rt ? ((gltexture_t *)rt)->inputwidth : 0;
 945 }
 946
 947 int R_TextureHeight(rtexture_t *rt)
 948 {
 949         return rt ? ((gltexture_t *)rt)->inputheight : 0;
 950 }
 951
 952 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
 953 {
 954         gltexture_t *glt;
 955         if (rt == NULL)
 956                 Host_Error("R_UpdateTexture: no texture supplied");
 957         if (data == NULL)
 958                 Host_Error("R_UpdateTexture: no data supplied");
 959         glt = (gltexture_t *)rt;
 960
 961         // we need it to be uploaded before we can update a part of it
 962         if (glt->flags & GLTEXF_UPLOAD)
 963                 R_UploadTexture(glt);
 964
 965         // update part of the texture
 966         R_Upload(glt, data, x, y, 0, width, height, 1);
 967 }
 968