gl_textures.c

   1
   2 #include "quakedef.h"
   3 #include "image.h"
   4 #include "jpeg.h"
   5
   6 cvar_t  gl_max_size = {CVAR_SAVE, "gl_max_size", "2048"};
   7 cvar_t  gl_max_scrapsize = {CVAR_SAVE, "gl_max_scrapsize", "256"};
   8 cvar_t  gl_picmip = {CVAR_SAVE, "gl_picmip", "0"};
   9 cvar_t  r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
  10 cvar_t  r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
  11 cvar_t  gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1"};
  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 // size of images which hold fragment textures, ignores picmip and max_size
  28 static int block_size;
  29
  30 typedef struct textypeinfo_s
  31 {
  32         int textype;
  33         int inputbytesperpixel;
  34         int internalbytesperpixel;
  35         int glformat;
  36         int glinternalformat;
  37 }
  38 textypeinfo_t;
  39
  40 static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
  41 static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
  42 static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
  43 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
  44 static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
  45 static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
  46
  47 // a tiling texture (most common type)
  48 #define GLIMAGETYPE_TILE 0
  49 // a fragments texture (contains one or more fragment textures)
  50 #define GLIMAGETYPE_FRAGMENTS 1
  51
  52 #define GLTEXTURETYPE_1D 0
  53 #define GLTEXTURETYPE_2D 1
  54 #define GLTEXTURETYPE_3D 2
  55 #define GLTEXTURETYPE_CUBEMAP 3
  56
  57 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
  58 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
  59 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
  60 static int cubemapside[6] =
  61 {
  62         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
  63         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
  64         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
  65         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
  66         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
  67         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
  68 };
  69
  70 // a gltextureimage can have one (or more if fragments) gltextures inside
  71 typedef struct gltextureimage_s
  72 {
  73         struct gltextureimage_s *imagechain;
  74         int texturecount;
  75         int type; // one of the GLIMAGETYPE_ values
  76         int texturetype; // one of the GLTEXTURETYPE_ values
  77         int sides; // 1 or 6 depending on texturetype
  78         int texnum; // GL texture slot number
  79         int width, height, depth; // 3D texture support
  80         int bytesperpixel; // bytes per pixel
  81         int glformat; // GL_RGB or GL_RGBA
  82         int glinternalformat; // 3 or 4
  83         int flags;
  84         short *blockallocation; // fragment allocation (2D only)
  85 }
  86 gltextureimage_t;
  87
  88 typedef struct gltexture_s
  89 {
  90         // this field is exposed to the R_GetTexture macro, for speed reasons
  91         // (must be identical in rtexture_t)
  92         int texnum; // GL texture slot number
  93
  94         // pointer to texturepool (check this to see if the texture is allocated)
  95         struct gltexturepool_s *pool;
  96         // pointer to next texture in texturepool chain
  97         struct gltexture_s *chain;
  98         // pointer into gltextureimage array
  99         gltextureimage_t *image;
 100         // name of the texture (this might be removed someday), no duplicates
 101         char identifier[32];
 102         // location in the image, and size
 103         int x, y, z, width, height, depth;
 104         // copy of the original texture(s) supplied to the upload function, for
 105         // delayed uploads (non-precached)
 106         unsigned char *inputtexels;
 107         // original data size in *inputtexels
 108         int inputdatasize;
 109         // flags supplied to the LoadTexture function
 110         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 111         int flags;
 112         // pointer to one of the textype_ structs
 113         textypeinfo_t *textype;
 114         // one of the GLTEXTURETYPE_ values
 115         int texturetype;
 116         // palette if the texture is TEXTYPE_PALETTE
 117         const unsigned int *palette;
 118 }
 119 gltexture_t;
 120
 121 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 122
 123 typedef struct gltexturepool_s
 124 {
 125         unsigned int sentinel;
 126         struct gltextureimage_s *imagechain;
 127         struct gltexture_s *gltchain;
 128         struct gltexturepool_s *next;
 129 }
 130 gltexturepool_t;
 131
 132 static gltexturepool_t *gltexturepoolchain = NULL;
 133
 134 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 135 static int resizebuffersize = 0;
 136 static unsigned char *texturebuffer;
 137 static int texturebuffersize = 0;
 138
 139 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 140 {
 141         if ((flags & (TEXF_PICMIP | TEXF_FRAGMENT)) == (TEXF_PICMIP | TEXF_FRAGMENT))
 142         {
 143                 Host_Error("R_GetTexTypeInfo: TEXF_PICMIP can not be used with TEXF_FRAGMENT");
 144                 return NULL;
 145         }
 146         if (flags & TEXF_ALPHA)
 147         {
 148                 switch(textype)
 149                 {
 150                 case TEXTYPE_PALETTE:
 151                         return &textype_palette_alpha;
 152                 case TEXTYPE_RGB:
 153                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
 154                         return NULL;
 155                 case TEXTYPE_RGBA:
 156                         return &textype_rgba_alpha;
 157                 default:
 158                         Host_Error("R_GetTexTypeInfo: unknown texture format");
 159                         return NULL;
 160                 }
 161         }
 162         else
 163         {
 164                 switch(textype)
 165                 {
 166                 case TEXTYPE_PALETTE:
 167                         return &textype_palette;
 168                 case TEXTYPE_RGB:
 169                         return &textype_rgb;
 170                 case TEXTYPE_RGBA:
 171                         return &textype_rgba;
 172                 case TEXTYPE_DSDT:
 173                         return &textype_dsdt;
 174                 default:
 175                         Host_Error("R_GetTexTypeInfo: unknown texture format");
 176                         return NULL;
 177                 }
 178         }
 179 }
 180
 181 static void R_UploadTexture(gltexture_t *t);
 182
 183 static void R_PrecacheTexture(gltexture_t *glt)
 184 {
 185         int precache;
 186         precache = false;
 187         if (glt->flags & TEXF_ALWAYSPRECACHE)
 188                 precache = true;
 189         else if (r_precachetextures.integer >= 2)
 190                 precache = true;
 191         else if (r_precachetextures.integer >= 1)
 192                 if (glt->flags & TEXF_PRECACHE)
 193                         precache = true;
 194
 195         if (precache)
 196                 R_UploadTexture(glt);
 197 }
 198
 199 int R_RealGetTexture(rtexture_t *rt)
 200 {
 201         if (rt)
 202         {
 203                 gltexture_t *glt;
 204                 glt = (gltexture_t *)rt;
 205                 if (glt->flags & GLTEXF_UPLOAD)
 206                         R_UploadTexture(glt);
 207                 glt->texnum = glt->image->texnum;
 208                 return glt->image->texnum;
 209         }
 210         else
 211                 return 0;
 212 }
 213
 214 void R_FreeTexture(rtexture_t *rt)
 215 {
 216         gltexture_t *glt, **gltpointer;
 217         gltextureimage_t *image, **gltimagepointer;
 218
 219         glt = (gltexture_t *)rt;
 220         if (glt == NULL)
 221                 Host_Error("R_FreeTexture: texture == NULL");
 222
 223         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 224         if (*gltpointer == glt)
 225                 *gltpointer = glt->chain;
 226         else
 227                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 228
 229         // note: if freeing a fragment texture, this will not make the claimed
 230         // space available for new textures unless all other fragments in the
 231         // image are also freed
 232         if (glt->image)
 233         {
 234                 image = glt->image;
 235                 image->texturecount--;
 236                 if (image->texturecount < 1)
 237                 {
 238                         for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
 239                         if (*gltimagepointer == image)
 240                                 *gltimagepointer = image->imagechain;
 241                         else
 242                                 Host_Error("R_FreeTexture: image not linked in pool");
 243                         if (image->texnum)
 244                                 qglDeleteTextures(1, (GLuint *)&image->texnum);
 245                         if (image->blockallocation)
 246                                 Mem_Free(image->blockallocation);
 247                         Mem_Free(image);
 248                 }
 249         }
 250
 251         if (glt->inputtexels)
 252                 Mem_Free(glt->inputtexels);
 253         Mem_Free(glt);
 254 }
 255
 256 rtexturepool_t *R_AllocTexturePool(void)
 257 {
 258         gltexturepool_t *pool;
 259         if (texturemempool == NULL)
 260                 return NULL;
 261         pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 262         if (pool == NULL)
 263                 return NULL;
 264         pool->next = gltexturepoolchain;
 265         gltexturepoolchain = pool;
 266         pool->sentinel = TEXTUREPOOL_SENTINEL;
 267         return (rtexturepool_t *)pool;
 268 }
 269
 270 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 271 {
 272         gltexturepool_t *pool, **poolpointer;
 273         if (rtexturepool == NULL)
 274                 return;
 275         if (*rtexturepool == NULL)
 276                 return;
 277         pool = (gltexturepool_t *)(*rtexturepool);
 278         *rtexturepool = NULL;
 279         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
 280                 Host_Error("R_FreeTexturePool: pool already freed");
 281         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 282         if (*poolpointer == pool)
 283                 *poolpointer = pool->next;
 284         else
 285                 Host_Error("R_FreeTexturePool: pool not linked");
 286         while (pool->gltchain)
 287                 R_FreeTexture((rtexture_t *)pool->gltchain);
 288         if (pool->imagechain)
 289                 Con_Printf("R_FreeTexturePool: not all images freed\n");
 290         Mem_Free(pool);
 291 }
 292
 293
 294 typedef struct glmode_s
 295 {
 296         char *name;
 297         int minification, magnification;
 298 }
 299 glmode_t;
 300
 301 static glmode_t modes[] =
 302 {
 303         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 304         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
 305         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
 306         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
 307         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
 308         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 309 };
 310
 311 static void GL_TextureMode_f (void)
 312 {
 313         int i;
 314         GLint oldbindtexnum;
 315         gltextureimage_t *image;
 316         gltexturepool_t *pool;
 317
 318         if (Cmd_Argc() == 1)
 319         {
 320                 for (i = 0;i < 6;i++)
 321                 {
 322                         if (gl_filter_min == modes[i].minification)
 323                         {
 324                                 Con_Printf("%s\n", modes[i].name);
 325                                 return;
 326                         }
 327                 }
 328                 Con_Print("current filter is unknown???\n");
 329                 return;
 330         }
 331
 332         for (i = 0;i < 6;i++)
 333                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 334                         break;
 335         if (i == 6)
 336         {
 337                 Con_Print("bad filter name\n");
 338                 return;
 339         }
 340
 341         gl_filter_min = modes[i].minification;
 342         gl_filter_mag = modes[i].magnification;
 343
 344         // change all the existing mipmap texture objects
 345         // FIXME: force renderer(/client/something?) restart instead?
 346         for (pool = gltexturepoolchain;pool;pool = pool->next)
 347         {
 348                 for (image = pool->imagechain;image;image = image->imagechain)
 349                 {
 350                         // only update already uploaded images
 351                         if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 352                         {
 353                                 qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
 354                                 qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
 355                                 if (image->flags & TEXF_MIPMAP)
 356                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
 357                                 else
 358                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
 359                                 qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
 360                                 qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
 361                         }
 362                 }
 363         }
 364 }
 365
 366 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 367 {
 368         int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
 369
 370         if (gl_max_size.integer > gl_max_texture_size)
 371                 Cvar_SetValue("gl_max_size", gl_max_texture_size);
 372
 373         switch (texturetype)
 374         {
 375         default:
 376         case GLTEXTURETYPE_1D:
 377         case GLTEXTURETYPE_2D:
 378                 maxsize = gl_max_texture_size;
 379                 break;
 380         case GLTEXTURETYPE_3D:
 381                 maxsize = gl_max_3d_texture_size;
 382                 break;
 383         case GLTEXTURETYPE_CUBEMAP:
 384                 maxsize = gl_max_cube_map_texture_size;
 385                 break;
 386         }
 387
 388         if (flags & TEXF_PICMIP)
 389         {
 390                 maxsize = min(maxsize, gl_max_size.integer);
 391                 picmip = gl_picmip.integer;
 392         }
 393
 394         if (outwidth)
 395         {
 396                 for (width2 = 1;width2 < inwidth;width2 <<= 1);
 397                 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
 398                 *outwidth = max(1, width2);
 399         }
 400         if (outheight)
 401         {
 402                 for (height2 = 1;height2 < inheight;height2 <<= 1);
 403                 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 404                 *outheight = max(1, height2);
 405         }
 406         if (outdepth)
 407         {
 408                 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
 409                 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
 410                 *outdepth = max(1, depth2);
 411         }
 412 }
 413
 414
 415 static int R_CalcTexelDataSize (gltexture_t *glt)
 416 {
 417         int width2, height2, depth2, size;
 418
 419         if (glt->flags & TEXF_FRAGMENT)
 420                 return glt->width * glt->height * glt->depth * glt->textype->internalbytesperpixel * glt->image->sides;
 421
 422         GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->width, glt->height, glt->depth, &width2, &height2, &depth2);
 423
 424         size = width2 * height2 * depth2;
 425
 426         if (glt->flags & TEXF_MIPMAP)
 427         {
 428                 while (width2 > 1 || height2 > 1 || depth2 > 1)
 429                 {
 430                         if (width2 > 1)
 431                                 width2 >>= 1;
 432                         if (height2 > 1)
 433                                 height2 >>= 1;
 434                         if (depth2 > 1)
 435                                 depth2 >>= 1;
 436                         size += width2 * height2 * depth2;
 437                 }
 438         }
 439
 440         return size * glt->textype->internalbytesperpixel * glt->image->sides;
 441 }
 442
 443 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 444 {
 445         int glsize;
 446         int isloaded;
 447         int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
 448         int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 449         gltexture_t *glt;
 450         gltexturepool_t *pool;
 451         if (printeach)
 452                 Con_Print("glsize input loaded mip alpha name\n");
 453         for (pool = gltexturepoolchain;pool;pool = pool->next)
 454         {
 455                 pooltotal = 0;
 456                 pooltotalt = 0;
 457                 pooltotalp = 0;
 458                 poolloaded = 0;
 459                 poolloadedt = 0;
 460                 poolloadedp = 0;
 461                 for (glt = pool->gltchain;glt;glt = glt->chain)
 462                 {
 463                         glsize = R_CalcTexelDataSize(glt);
 464                         isloaded = !(glt->flags & GLTEXF_UPLOAD);
 465                         pooltotal++;
 466                         pooltotalt += glsize;
 467                         pooltotalp += glt->inputdatasize;
 468                         if (isloaded)
 469                         {
 470                                 poolloaded++;
 471                                 poolloadedt += glsize;
 472                                 poolloadedp += glt->inputdatasize;
 473                         }
 474                         if (printeach)
 475                                 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);
 476                 }
 477                 if (printpool)
 478                         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);
 479                 sumtotal += pooltotal;
 480                 sumtotalt += pooltotalt;
 481                 sumtotalp += pooltotalp;
 482                 sumloaded += poolloaded;
 483                 sumloadedt += poolloadedt;
 484                 sumloadedp += poolloadedp;
 485         }
 486         if (printtotal)
 487                 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);
 488 }
 489
 490 static void R_TextureStats_f(void)
 491 {
 492         R_TextureStats_Print(true, true, true);
 493 }
 494
 495 static void r_textures_start(void)
 496 {
 497         // LordHavoc: allow any alignment
 498         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 499         CHECKGLERROR
 500
 501         // use the largest scrap texture size we can (not sure if this is really a good idea)
 502         for (block_size = 1;block_size * 2 <= gl_max_texture_size && block_size * 2 <= gl_max_scrapsize.integer;block_size *= 2);
 503
 504         texturemempool = Mem_AllocPool("texture management", 0, NULL);
 505
 506         // Disable JPEG screenshots if the DLL isn't loaded
 507         if (! JPEG_OpenLibrary ())
 508                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
 509 }
 510
 511 static void r_textures_shutdown(void)
 512 {
 513         rtexturepool_t *temp;
 514
 515         JPEG_CloseLibrary ();
 516
 517         while(gltexturepoolchain)
 518         {
 519                 temp = (rtexturepool_t *) gltexturepoolchain;
 520                 R_FreeTexturePool(&temp);
 521         }
 522
 523         resizebuffersize = 0;
 524         texturebuffersize = 0;
 525         resizebuffer = NULL;
 526         colorconvertbuffer = NULL;
 527         texturebuffer = NULL;
 528         Mem_FreePool(&texturemempool);
 529 }
 530
 531 static void r_textures_newmap(void)
 532 {
 533 }
 534
 535 void R_Textures_Init (void)
 536 {
 537         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
 538         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
 539         Cvar_RegisterVariable (&gl_max_scrapsize);
 540         Cvar_RegisterVariable (&gl_max_size);
 541         Cvar_RegisterVariable (&gl_picmip);
 542         Cvar_RegisterVariable (&r_lerpimages);
 543         Cvar_RegisterVariable (&r_precachetextures);
 544         Cvar_RegisterVariable (&gl_texture_anisotropy);
 545
 546         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 547 }
 548
 549 void R_Textures_Frame (void)
 550 {
 551         static int old_aniso = 0;
 552
 553         // could do procedural texture animation here, if we keep track of which
 554         // textures were accessed this frame...
 555
 556         // free the resize buffers
 557         resizebuffersize = 0;
 558         if (resizebuffer)
 559         {
 560                 Mem_Free(resizebuffer);
 561                 resizebuffer = NULL;
 562         }
 563         if (colorconvertbuffer)
 564         {
 565                 Mem_Free(colorconvertbuffer);
 566                 colorconvertbuffer = NULL;
 567         }
 568
 569         if (old_aniso != gl_texture_anisotropy.integer)
 570         {
 571                 gltextureimage_t *image;
 572                 gltexturepool_t *pool;
 573                 GLint oldbindtexnum;
 574
 575                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 576
 577                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 578
 579                 for (pool = gltexturepoolchain;pool;pool = pool->next)
 580                 {
 581                         for (image = pool->imagechain;image;image = image->imagechain)
 582                         {
 583                                 // only update already uploaded images
 584                                 if (!(image->flags & GLTEXF_UPLOAD) && (image->flags & TEXF_MIPMAP))
 585                                 {
 586                                         qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
 587
 588                                         qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
 589                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 590
 591                                         qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
 592                                 }
 593                         }
 594                 }
 595         }
 596 }
 597
 598 void R_MakeResizeBufferBigger(int size)
 599 {
 600         if (resizebuffersize < size)
 601         {
 602                 resizebuffersize = size;
 603                 if (resizebuffer)
 604                         Mem_Free(resizebuffer);
 605                 if (colorconvertbuffer)
 606                         Mem_Free(colorconvertbuffer);
 607                 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 608                 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 609                 if (!resizebuffer || !colorconvertbuffer)
 610                         Host_Error("R_Upload: out of memory");
 611         }
 612 }
 613
 614 static void GL_SetupTextureParameters(int flags, int texturetype)
 615 {
 616         int textureenum = gltexturetypeenums[texturetype];
 617         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 618
 619         CHECKGLERROR
 620
 621         if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 622         {
 623                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 624                 if (gl_texture_anisotropy.integer != aniso)
 625                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
 626                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 627         }
 628         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
 629         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
 630         if (gltexturetypedimensions[texturetype] >= 3)
 631         {
 632                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
 633         }
 634
 635         CHECKGLERROR
 636         if (flags & TEXF_FORCENEAREST)
 637         {
 638                 if (flags & TEXF_MIPMAP)
 639                 {
 640                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 641                 }
 642                 else
 643                 {
 644                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 645                 }
 646                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 647         }
 648         else if (flags & TEXF_FORCELINEAR)
 649         {
 650                 if (flags & TEXF_MIPMAP)
 651                 {
 652                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
 653                         {
 654                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
 655                         }
 656                         else
 657                         {
 658                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
 659                         }
 660                 }
 661                 else
 662                 {
 663                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
 664                 }
 665                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 666         }
 667         else
 668         {
 669                 if (flags & TEXF_MIPMAP)
 670                 {
 671                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
 672                 }
 673                 else
 674                 {
 675                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
 676                 }
 677                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 678         }
 679
 680         CHECKGLERROR
 681 }
 682
 683 static void R_Upload(gltexture_t *glt, unsigned char *data)
 684 {
 685         int i, mip, width, height, depth;
 686         GLint oldbindtexnum;
 687         unsigned char *prevbuffer;
 688         prevbuffer = data;
 689
 690         CHECKGLERROR
 691
 692         glt->texnum = glt->image->texnum;
 693         // we need to restore the texture binding after finishing the upload
 694         qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
 695         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
 696         CHECKGLERROR
 697         glt->flags &= ~GLTEXF_UPLOAD;
 698
 699         if (glt->flags & TEXF_FRAGMENT)
 700         {
 701                 if (glt->image->flags & GLTEXF_UPLOAD)
 702                 {
 703                         glt->image->flags &= ~GLTEXF_UPLOAD;
 704                         Con_DPrint("uploaded new fragments image\n");
 705                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 706                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 707                         switch(glt->image->texturetype)
 708                         {
 709                         case GLTEXTURETYPE_1D:
 710                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 711                                 CHECKGLERROR
 712                                 break;
 713                         case GLTEXTURETYPE_2D:
 714                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 715                                 CHECKGLERROR
 716                                 break;
 717                         case GLTEXTURETYPE_3D:
 718                                 qglTexImage3D(GL_TEXTURE_3D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
 719                                 CHECKGLERROR
 720                                 break;
 721                         default:
 722                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D");
 723                                 break;
 724                         }
 725                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 726                 }
 727
 728                 if (prevbuffer == NULL)
 729                 {
 730                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
 731                         memset(resizebuffer, 0, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
 732                         prevbuffer = resizebuffer;
 733                 }
 734                 else if (glt->textype->textype == TEXTYPE_PALETTE)
 735                 {
 736                         // promote paletted to RGBA, so we only have to worry about RGB and
 737                         // RGBA in the rest of this code
 738                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
 739                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
 740                         prevbuffer = colorconvertbuffer;
 741                 }
 742
 743                 switch(glt->image->texturetype)
 744                 {
 745                 case GLTEXTURETYPE_1D:
 746                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 747                         CHECKGLERROR
 748                         break;
 749                 case GLTEXTURETYPE_2D:
 750                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 751                         CHECKGLERROR
 752                         break;
 753                 case GLTEXTURETYPE_3D:
 754                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 755                         CHECKGLERROR
 756                         break;
 757                 default:
 758                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D");
 759                         break;
 760                 }
 761         }
 762         else
 763         {
 764                 glt->image->flags &= ~GLTEXF_UPLOAD;
 765
 766                 // these are rounded up versions of the size to do better resampling
 767                 for (width  = 1;width  < glt->width ;width  <<= 1);
 768                 for (height = 1;height < glt->height;height <<= 1);
 769                 for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 770
 771                 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
 772
 773                 if (prevbuffer == NULL)
 774                 {
 775                         width = glt->image->width;
 776                         height = glt->image->height;
 777                         depth = glt->image->depth;
 778                         memset(resizebuffer, 0, width * height * depth * glt->image->bytesperpixel);
 779                         prevbuffer = resizebuffer;
 780                 }
 781                 else
 782                 {
 783                         if (glt->textype->textype == TEXTYPE_PALETTE)
 784                         {
 785                                 // promote paletted to RGBA, so we only have to worry about RGB and
 786                                 // RGBA in the rest of this code
 787                                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
 788                                 prevbuffer = colorconvertbuffer;
 789                         }
 790                 }
 791
 792                 // cubemaps contain multiple images and thus get processed a bit differently
 793                 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
 794                 {
 795                         if (glt->width != width || glt->height != height || glt->depth != depth)
 796                         {
 797                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 798                                 prevbuffer = resizebuffer;
 799                         }
 800                         // picmip/max_size
 801                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 802                         {
 803                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 804                                 prevbuffer = resizebuffer;
 805                         }
 806                 }
 807                 mip = 0;
 808                 switch(glt->image->texturetype)
 809                 {
 810                 case GLTEXTURETYPE_1D:
 811                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 812                         CHECKGLERROR
 813                         if (glt->flags & TEXF_MIPMAP)
 814                         {
 815                                 while (width > 1 || height > 1 || depth > 1)
 816                                 {
 817                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 818                                         prevbuffer = resizebuffer;
 819                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 820                                         CHECKGLERROR
 821                                 }
 822                         }
 823                         break;
 824                 case GLTEXTURETYPE_2D:
 825                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 826                         CHECKGLERROR
 827                         if (glt->flags & TEXF_MIPMAP)
 828                         {
 829                                 while (width > 1 || height > 1 || depth > 1)
 830                                 {
 831                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 832                                         prevbuffer = resizebuffer;
 833                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 834                                         CHECKGLERROR
 835                                 }
 836                         }
 837                         break;
 838                 case GLTEXTURETYPE_3D:
 839                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 840                         CHECKGLERROR
 841                         if (glt->flags & TEXF_MIPMAP)
 842                         {
 843                                 while (width > 1 || height > 1 || depth > 1)
 844                                 {
 845                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 846                                         prevbuffer = resizebuffer;
 847                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 848                                         CHECKGLERROR
 849                                 }
 850                         }
 851                         break;
 852                 case GLTEXTURETYPE_CUBEMAP:
 853                         // convert and upload each side in turn,
 854                         // from a continuous block of input texels
 855                         texturebuffer = prevbuffer;
 856                         for (i = 0;i < 6;i++)
 857                         {
 858                                 prevbuffer = texturebuffer;
 859                                 texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
 860                                 if (glt->width != width || glt->height != height || glt->depth != depth)
 861                                 {
 862                                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
 863                                         prevbuffer = resizebuffer;
 864                                 }
 865                                 // picmip/max_size
 866                                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
 867                                 {
 868                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
 869                                         prevbuffer = resizebuffer;
 870                                 }
 871                                 mip = 0;
 872                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 873                                 CHECKGLERROR
 874                                 if (glt->flags & TEXF_MIPMAP)
 875                                 {
 876                                         while (width > 1 || height > 1 || depth > 1)
 877                                         {
 878                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
 879                                                 prevbuffer = resizebuffer;
 880                                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 881                                                 CHECKGLERROR
 882                                         }
 883                                 }
 884                         }
 885                         break;
 886                 }
 887                 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
 888         }
 889         qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
 890 }
 891
 892 static void R_FindImageForTexture(gltexture_t *glt)
 893 {
 894         int i, j, best, best2, x, y, z, w, h, d;
 895         textypeinfo_t *texinfo;
 896         gltexturepool_t *pool;
 897         gltextureimage_t *image, **imagechainpointer;
 898         texinfo = glt->textype;
 899         pool = glt->pool;
 900
 901         // remains -1 until uploaded
 902         glt->texnum = -1;
 903
 904         x = 0;
 905         y = 0;
 906         z = 0;
 907         w = glt->width;
 908         h = glt->height;
 909         d = glt->depth;
 910         if (glt->flags & TEXF_FRAGMENT)
 911         {
 912                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
 913                 {
 914                         image = *imagechainpointer;
 915                         if (image->type != GLIMAGETYPE_FRAGMENTS)
 916                                 continue;
 917                         if (image->texturetype != glt->texturetype)
 918                                 continue;
 919                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR))
 920                                 continue;
 921                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
 922                                 continue;
 923                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
 924                                 continue;
 925
 926                         // got a fragments texture, find a place in it if we can
 927                         for (best = image->width, i = 0;i < image->width - w;i++)
 928                         {
 929                                 for (best2 = 0, j = 0;j < w;j++)
 930                                 {
 931                                         if (image->blockallocation[i+j] >= best)
 932                                                 break;
 933                                         if (best2 < image->blockallocation[i+j])
 934                                                 best2 = image->blockallocation[i+j];
 935                                 }
 936                                 if (j == w)
 937                                 {
 938                                         // this is a valid spot
 939                                         x = i;
 940                                         y = best = best2;
 941                                 }
 942                         }
 943
 944                         if (best + h > image->height)
 945                                 continue;
 946
 947                         for (i = 0;i < w;i++)
 948                                 image->blockallocation[x + i] = best + h;
 949
 950                         glt->x = x;
 951                         glt->y = y;
 952                         glt->z = 0;
 953                         glt->image = image;
 954                         image->texturecount++;
 955                         return;
 956                 }
 957
 958                 image = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 959                 if (image == NULL)
 960                 {
 961                         Con_Printf ("R_FindImageForTexture: ran out of memory\n");
 962                         return;
 963                 }
 964                 image->type = GLIMAGETYPE_FRAGMENTS;
 965                 // make sure the created image is big enough for the fragment
 966                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
 967                 image->height = 1;
 968                 if (gltexturetypedimensions[glt->texturetype] >= 2)
 969                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
 970                 image->depth = 1;
 971                 if (gltexturetypedimensions[glt->texturetype] >= 3)
 972                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
 973                 image->blockallocation = (short int *)Mem_Alloc(texturemempool, image->width * sizeof(short));
 974                 memset(image->blockallocation, 0, image->width * sizeof(short));
 975
 976                 x = 0;
 977                 y = 0;
 978                 z = 0;
 979                 for (i = 0;i < w;i++)
 980                         image->blockallocation[x + i] = y + h;
 981         }
 982         else
 983         {
 984                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 985
 986                 image = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
 987                 if (image == NULL)
 988                 {
 989                         Con_Printf ("R_FindImageForTexture: ran out of memory\n");
 990                         return;
 991                 }
 992                 image->type = GLIMAGETYPE_TILE;
 993                 image->blockallocation = NULL;
 994
 995                 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->width, glt->height, glt->depth, &image->width, &image->height, &image->depth);
 996         }
 997         image->texturetype = glt->texturetype;
 998         image->glinternalformat = texinfo->glinternalformat;
 999         image->glformat = texinfo->glformat;
1000         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_PICMIP | TEXF_FORCENEAREST | TEXF_FORCELINEAR)) | GLTEXF_UPLOAD;
1001         image->bytesperpixel = texinfo->internalbytesperpixel;
1002         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
1003         // get a texture number to use
1004         qglGenTextures(1, (GLuint *)&image->texnum);
1005         *imagechainpointer = image;
1006         image->texturecount++;
1007
1008         glt->x = x;
1009         glt->y = y;
1010         glt->z = z;
1011         glt->image = image;
1012 }
1013
1014 // note: R_FindImageForTexture must be called before this
1015 static void R_UploadTexture (gltexture_t *glt)
1016 {
1017         if (!(glt->flags & GLTEXF_UPLOAD))
1018                 return;
1019
1020         R_Upload(glt, glt->inputtexels);
1021         if (glt->inputtexels)
1022         {
1023                 Mem_Free(glt->inputtexels);
1024                 glt->inputtexels = NULL;
1025                 glt->flags |= GLTEXF_DESTROYED;
1026         }
1027         else if (glt->flags & GLTEXF_DESTROYED)
1028                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
1029 }
1030
1031 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)
1032 {
1033         int i, size;
1034         gltexture_t *glt;
1035         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1036         textypeinfo_t *texinfo;
1037
1038         if (cls.state == ca_dedicated)
1039                 return NULL;
1040
1041         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
1042         {
1043                 Con_Printf ("R_LoadTexture: only 2D fragment textures implemented\n");
1044                 return NULL;
1045         }
1046         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
1047         {
1048                 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
1049                 return NULL;
1050         }
1051         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
1052         {
1053                 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
1054                 return NULL;
1055         }
1056
1057         texinfo = R_GetTexTypeInfo(textype, flags);
1058         size = width * height * depth * sides * texinfo->inputbytesperpixel;
1059         if (size < 1)
1060         {
1061                 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
1062                 return NULL;
1063         }
1064
1065         // clear the alpha flag if the texture has no transparent pixels
1066         switch(textype)
1067         {
1068         case TEXTYPE_PALETTE:
1069                 if (flags & TEXF_ALPHA)
1070                 {
1071                         flags &= ~TEXF_ALPHA;
1072                         if (data)
1073                         {
1074                                 for (i = 0;i < size;i++)
1075                                 {
1076                                         if (((unsigned char *)&palette[data[i]])[3] < 255)
1077                                         {
1078                                                 flags |= TEXF_ALPHA;
1079                                                 break;
1080                                         }
1081                                 }
1082                         }
1083                 }
1084                 break;
1085         case TEXTYPE_RGB:
1086                 if (flags & TEXF_ALPHA)
1087                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
1088                 break;
1089         case TEXTYPE_RGBA:
1090                 if (flags & TEXF_ALPHA)
1091                 {
1092                         flags &= ~TEXF_ALPHA;
1093                         if (data)
1094                         {
1095                                 for (i = 3;i < size;i += 4)
1096                                 {
1097                                         if (data[i] < 255)
1098                                         {
1099                                                 flags |= TEXF_ALPHA;
1100                                                 break;
1101                                         }
1102                                 }
1103                         }
1104                 }
1105                 break;
1106         case TEXTYPE_DSDT:
1107                 break;
1108         default:
1109                 Host_Error("R_LoadTexture: unknown texture type");
1110         }
1111
1112         glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
1113         if (identifier)
1114                 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
1115         glt->pool = pool;
1116         glt->chain = pool->gltchain;
1117         pool->gltchain = glt;
1118         glt->width = width;
1119         glt->height = height;
1120         glt->depth = depth;
1121         glt->flags = flags | GLTEXF_UPLOAD;
1122         glt->textype = texinfo;
1123         glt->texturetype = texturetype;
1124         glt->inputdatasize = size;
1125         glt->palette = palette;
1126
1127         if (data)
1128         {
1129                 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1130                 if (glt->inputtexels == NULL)
1131                         Con_Printf ("R_LoadTexture: out of memory\n");
1132                 else
1133                         memcpy(glt->inputtexels, data, size);
1134         }
1135         else
1136                 glt->inputtexels = NULL;
1137
1138         R_FindImageForTexture(glt);
1139         R_PrecacheTexture(glt);
1140
1141         return (rtexture_t *)glt;
1142 }
1143
1144 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1145 {
1146         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1147 }
1148
1149 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)
1150 {
1151         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1152 }
1153
1154 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)
1155 {
1156         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1157 }
1158
1159 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
1160 {
1161         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1162 }
1163
1164 int R_TextureHasAlpha(rtexture_t *rt)
1165 {
1166         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1167 }
1168
1169 int R_TextureWidth(rtexture_t *rt)
1170 {
1171         return rt ? ((gltexture_t *)rt)->width : 0;
1172 }
1173
1174 int R_TextureHeight(rtexture_t *rt)
1175 {
1176         return rt ? ((gltexture_t *)rt)->height : 0;
1177 }
1178
1179 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1180 {
1181         gltexture_t *glt;
1182         float iwidth, iheight, idepth;
1183         if (cls.state == ca_dedicated)
1184         {
1185                 if (x)
1186                         *x = 0;
1187                 if (y)
1188                         *y = 0;
1189                 if (z)
1190                         *z = 0;
1191                 if (fx1 || fy1 || fx2 || fy2)
1192                 {
1193                         if (fx1)
1194                                 *fx1 = 0;
1195                         if (fy1)
1196                                 *fy1 = 0;
1197                         if (fz1)
1198                                 *fz1 = 0;
1199                         if (fx2)
1200                                 *fx2 = 1;
1201                         if (fy2)
1202                                 *fy2 = 1;
1203                         if (fz2)
1204                                 *fz2 = 1;
1205                 }
1206                 return;
1207         }
1208         if (!rt)
1209                 Host_Error("R_FragmentLocation: no texture supplied");
1210         glt = (gltexture_t *)rt;
1211         if (glt->flags & TEXF_FRAGMENT)
1212         {
1213                 if (x)
1214                         *x = glt->x;
1215                 if (y)
1216                         *y = glt->y;
1217                 if (fx1 || fy1 || fx2 || fy2)
1218                 {
1219                         iwidth = 1.0f / glt->image->width;
1220                         iheight = 1.0f / glt->image->height;
1221                         idepth = 1.0f / glt->image->depth;
1222                         if (fx1)
1223                                 *fx1 = glt->x * iwidth;
1224                         if (fy1)
1225                                 *fy1 = glt->y * iheight;
1226                         if (fz1)
1227                                 *fz1 = glt->z * idepth;
1228                         if (fx2)
1229                                 *fx2 = (glt->x + glt->width) * iwidth;
1230                         if (fy2)
1231                                 *fy2 = (glt->y + glt->height) * iheight;
1232                         if (fz2)
1233                                 *fz2 = (glt->z + glt->depth) * idepth;
1234                 }
1235         }
1236         else
1237         {
1238                 if (x)
1239                         *x = 0;
1240                 if (y)
1241                         *y = 0;
1242                 if (z)
1243                         *z = 0;
1244                 if (fx1 || fy1 || fx2 || fy2)
1245                 {
1246                         if (fx1)
1247                                 *fx1 = 0;
1248                         if (fy1)
1249                                 *fy1 = 0;
1250                         if (fz1)
1251                                 *fz1 = 0;
1252                         if (fx2)
1253                                 *fx2 = 1;
1254                         if (fy2)
1255                                 *fy2 = 1;
1256                         if (fz2)
1257                                 *fz2 = 1;
1258                 }
1259         }
1260 }
1261
1262 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1263 {
1264         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1265 }
1266
1267 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1268 {
1269         return width;
1270 }
1271
1272 void R_UpdateTexture(rtexture_t *rt, unsigned char *data)
1273 {
1274         gltexture_t *glt;
1275         if (rt == NULL)
1276                 Host_Error("R_UpdateTexture: no texture supplied");
1277         if (data == NULL)
1278                 Host_Error("R_UpdateTexture: no data supplied");
1279         glt = (gltexture_t *)rt;
1280
1281         // if it has not been uploaded yet, update the data that will be used when it is
1282         if (glt->inputtexels)
1283                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1284         else
1285                 R_Upload(glt, data);
1286 }
1287