369
[divverent/darkplaces.git] / 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 static mempool_t *texturedatamempool;
19 static mempool_t *textureprocessingmempool;
20
21 // note: this must not conflict with TEXF_ flags in r_textures.h
22 // cleared when a texture is uploaded
23 #define GLTEXF_UPLOAD 0x00010000
24 // bitmask for mismatch checking
25 #define GLTEXF_IMPORTANTBITS (0)
26 // set when image is uploaded and freed
27 #define GLTEXF_DESTROYED 0x00040000
28
29 // size of images which hold fragment textures, ignores picmip and max_size
30 static int block_size;
31
32 typedef struct
33 {
34         int textype;
35         int inputbytesperpixel;
36         int internalbytesperpixel;
37         int glformat;
38         int glinternalformat;
39 }
40 textypeinfo_t;
41
42 static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
43 static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
44 static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
45 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
46 static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
47 static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
48
49 // a tiling texture (most common type)
50 #define GLIMAGETYPE_TILE 0
51 // a fragments texture (contains one or more fragment textures)
52 #define GLIMAGETYPE_FRAGMENTS 1
53
54 #define GLTEXTURETYPE_1D 0
55 #define GLTEXTURETYPE_2D 1
56 #define GLTEXTURETYPE_3D 2
57 #define GLTEXTURETYPE_CUBEMAP 3
58
59 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
60 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
61 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
62 static int cubemapside[6] =
63 {
64         GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
65         GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
66         GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
67         GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
68         GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
69         GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
70 };
71
72 // a gltextureimage can have one (or more if fragments) gltextures inside
73 typedef struct gltextureimage_s
74 {
75         struct gltextureimage_s *imagechain;
76         int texturecount;
77         int type; // one of the GLIMAGETYPE_ values
78         int texturetype; // one of the GLTEXTURETYPE_ values
79         int sides; // 1 or 6 depending on texturetype
80         int texnum; // GL texture slot number
81         int width, height, depth; // 3D texture support
82         int bytesperpixel; // bytes per pixel
83         int glformat; // GL_RGB or GL_RGBA
84         int glinternalformat; // 3 or 4
85         int flags;
86         short *blockallocation; // fragment allocation (2D only)
87 }
88 gltextureimage_t;
89
90 typedef struct gltexture_s
91 {
92         // this field is exposed to the R_GetTexture macro, for speed reasons
93         // (must be identical in rtexture_t)
94         int texnum; // GL texture slot number
95
96         // pointer to texturepool (check this to see if the texture is allocated)
97         struct gltexturepool_s *pool;
98         // pointer to next texture in texturepool chain
99         struct gltexture_s *chain;
100         // pointer into gltextureimage array
101         gltextureimage_t *image;
102         // name of the texture (this might be removed someday), no duplicates
103         char *identifier;
104         // location in the image, and size
105         int x, y, z, width, height, depth;
106         // copy of the original texture(s) supplied to the upload function, for
107         // delayed uploads (non-precached)
108         qbyte *inputtexels;
109         // original data size in *inputtexels
110         int inputdatasize;
111         // flags supplied to the LoadTexture function
112         // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
113         int flags;
114         // pointer to one of the textype_ structs
115         textypeinfo_t *textype;
116         // one of the GLTEXTURETYPE_ values
117         int texturetype;
118         // palette if the texture is TEXTYPE_PALETTE
119         const unsigned int *palette;
120 }
121 gltexture_t;
122
123 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
124
125 typedef struct gltexturepool_s
126 {
127         unsigned int sentinel;
128         struct gltextureimage_s *imagechain;
129         struct gltexture_s *gltchain;
130         struct gltexturepool_s *next;
131 }
132 gltexturepool_t;
133
134 static gltexturepool_t *gltexturepoolchain = NULL;
135
136 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
137 static int resizebuffersize = 0;
138 static qbyte *texturebuffer;
139 static int texturebuffersize = 0;
140
141 static int realmaxsize = 0;
142
143 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
144 {
145         if (flags & TEXF_ALPHA)
146         {
147                 switch(textype)
148                 {
149                 case TEXTYPE_PALETTE:
150                         return &textype_palette_alpha;
151                 case TEXTYPE_RGB:
152                         Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
153                         return NULL;
154                 case TEXTYPE_RGBA:
155                         return &textype_rgba_alpha;
156                 default:
157                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
158                         return NULL;
159                 }
160         }
161         else
162         {
163                 switch(textype)
164                 {
165                 case TEXTYPE_PALETTE:
166                         return &textype_palette;
167                 case TEXTYPE_RGB:
168                         return &textype_rgb;
169                 case TEXTYPE_RGBA:
170                         return &textype_rgba;
171                 case TEXTYPE_DSDT:
172                         return &textype_dsdt;
173                 default:
174                         Host_Error("R_GetTexTypeInfo: unknown texture format\n");
175                         return NULL;
176                 }
177         }
178 }
179
180 static void R_UploadTexture(gltexture_t *t);
181
182 static void R_PrecacheTexture(gltexture_t *glt)
183 {
184         int precache;
185         precache = false;
186         if (glt->flags & TEXF_ALWAYSPRECACHE)
187                 precache = true;
188         else if (r_precachetextures.integer >= 2)
189                 precache = true;
190         else if (r_precachetextures.integer >= 1)
191                 if (glt->flags & TEXF_PRECACHE)
192                         precache = true;
193
194         if (precache)
195                 R_UploadTexture(glt);
196 }
197
198 int R_RealGetTexture(rtexture_t *rt)
199 {
200         if (rt)
201         {
202                 gltexture_t *glt;
203                 glt = (gltexture_t *)rt;
204                 if (glt->flags & GLTEXF_UPLOAD)
205                         R_UploadTexture(glt);
206                 glt->texnum = glt->image->texnum;
207                 return glt->image->texnum;
208         }
209         else
210                 return 0;
211 }
212
213 void R_FreeTexture(rtexture_t *rt)
214 {
215         gltexture_t *glt, **gltpointer;
216         gltextureimage_t *image, **gltimagepointer;
217
218         glt = (gltexture_t *)rt;
219         if (glt == NULL)
220                 Host_Error("R_FreeTexture: texture == NULL\n");
221
222         for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
223         if (*gltpointer == glt)
224                 *gltpointer = glt->chain;
225         else
226                 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
227
228         // note: if freeing a fragment texture, this will not make the claimed
229         // space available for new textures unless all other fragments in the
230         // image are also freed
231         if (glt->image)
232         {
233                 image = glt->image;
234                 image->texturecount--;
235                 if (image->texturecount < 1)
236                 {
237                         for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
238                         if (*gltimagepointer == image)
239                                 *gltimagepointer = image->imagechain;
240                         else
241                                 Host_Error("R_FreeTexture: image not linked in pool\n");
242                         if (image->texnum)
243                                 qglDeleteTextures(1, &image->texnum);
244                         if (image->blockallocation)
245                                 Mem_Free(image->blockallocation);
246                         Mem_Free(image);
247                 }
248         }
249
250         if (glt->identifier)
251                 Mem_Free(glt->identifier);
252         if (glt->inputtexels)
253                 Mem_Free(glt->inputtexels);
254         Mem_Free(glt);
255 }
256
257 /*
258 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
259 {
260         gltexture_t     *glt;
261
262         if (!identifier)
263                 return NULL;
264
265         for (glt = pool->gltchain;glt;glt = glt->chain)
266                 if (glt->identifier && !strcmp (identifier, glt->identifier))
267                         return glt;
268
269         return NULL;
270 }
271 */
272
273 rtexturepool_t *R_AllocTexturePool(void)
274 {
275         gltexturepool_t *pool;
276         if (texturemempool == NULL)
277                 return NULL;
278         pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
279         if (pool == NULL)
280                 return NULL;
281         pool->next = gltexturepoolchain;
282         gltexturepoolchain = pool;
283         pool->sentinel = TEXTUREPOOL_SENTINEL;
284         return (rtexturepool_t *)pool;
285 }
286
287 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
288 {
289         gltexturepool_t *pool, **poolpointer;
290         if (rtexturepool == NULL)
291                 return;
292         if (*rtexturepool == NULL)
293                 return;
294         pool = (gltexturepool_t *)(*rtexturepool);
295         *rtexturepool = NULL;
296         if (pool->sentinel != TEXTUREPOOL_SENTINEL)
297                 Host_Error("R_FreeTexturePool: pool already freed\n");
298         for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
299         if (*poolpointer == pool)
300                 *poolpointer = pool->next;
301         else
302                 Host_Error("R_FreeTexturePool: pool not linked\n");
303         while (pool->gltchain)
304                 R_FreeTexture((rtexture_t *)pool->gltchain);
305         if (pool->imagechain)
306                 Sys_Error("R_FreeTexturePool: not all images freed\n");
307         Mem_Free(pool);
308 }
309
310
311 typedef struct
312 {
313         char *name;
314         int minification, magnification;
315 }
316 glmode_t;
317
318 static glmode_t modes[] =
319 {
320         {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
321         {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
322         {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
323         {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
324         {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
325         {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
326 };
327
328 static void GL_TextureMode_f (void)
329 {
330         int i;
331         GLint oldbindtexnum;
332         gltextureimage_t *image;
333         gltexturepool_t *pool;
334
335         if (Cmd_Argc() == 1)
336         {
337                 for (i = 0;i < 6;i++)
338                 {
339                         if (gl_filter_min == modes[i].minification)
340                         {
341                                 Con_Printf("%s\n", modes[i].name);
342                                 return;
343                         }
344                 }
345                 Con_Print("current filter is unknown???\n");
346                 return;
347         }
348
349         for (i = 0;i < 6;i++)
350                 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
351                         break;
352         if (i == 6)
353         {
354                 Con_Print("bad filter name\n");
355                 return;
356         }
357
358         gl_filter_min = modes[i].minification;
359         gl_filter_mag = modes[i].magnification;
360
361         // change all the existing mipmap texture objects
362         // FIXME: force renderer(/client/something?) restart instead?
363         for (pool = gltexturepoolchain;pool;pool = pool->next)
364         {
365                 for (image = pool->imagechain;image;image = image->imagechain)
366                 {
367                         // only update already uploaded images
368                         if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
369                         {
370                                 qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
371                                 qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
372                                 if (image->flags & TEXF_MIPMAP)
373                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
374                                 else
375                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
376                                 qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
377                                 qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
378                         }
379                 }
380         }
381 }
382
383 static int R_CalcTexelDataSize (gltexture_t *glt)
384 {
385         int width2, height2, depth2, size, picmip;
386         if (glt->flags & TEXF_FRAGMENT)
387                 size = glt->width * glt->height * glt->depth;
388         else
389         {
390                 picmip = 0;
391                 if (glt->flags & TEXF_PICMIP)
392                         picmip = gl_picmip.integer;
393                 if (gl_max_size.integer > realmaxsize)
394                         Cvar_SetValue("gl_max_size", realmaxsize);
395                 // calculate final size
396                 for (width2 = 1;width2 < glt->width;width2 <<= 1);
397                 for (height2 = 1;height2 < glt->height;height2 <<= 1);
398                 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
399                 for (width2 >>= picmip;width2 > gl_max_size.integer;width2 >>= 1);
400                 for (height2 >>= picmip;height2 > gl_max_size.integer;height2 >>= 1);
401                 for (depth2 >>= picmip;depth2 > gl_max_size.integer;depth2 >>= 1);
402                 if (width2 < 1) width2 = 1;
403                 if (height2 < 1) height2 = 1;
404                 if (depth2 < 1) depth2 = 1;
405
406                 size = 0;
407                 if (glt->flags & TEXF_MIPMAP)
408                 {
409                         while (width2 > 1 || height2 > 1 || depth2 > 1)
410                         {
411                                 size += width2 * height2 * depth2;
412                                 if (width2 > 1)
413                                         width2 >>= 1;
414                                 if (height2 > 1)
415                                         height2 >>= 1;
416                                 if (depth2 > 1)
417                                         depth2 >>= 1;
418                         }
419                         size++; // count the last 1x1 mipmap
420                 }
421                 else
422                         size = width2 * height2 * depth2;
423         }
424         size *= glt->textype->internalbytesperpixel * glt->image->sides;
425
426         return size;
427 }
428
429 void R_TextureStats_PrintTotal(void)
430 {
431         int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
432         gltexture_t *glt;
433         gltexturepool_t *pool;
434         for (pool = gltexturepoolchain;pool;pool = pool->next)
435         {
436                 for (glt = pool->gltchain;glt;glt = glt->chain)
437                 {
438                         glsize = R_CalcTexelDataSize(glt);
439                         total++;
440                         totalt += glsize;
441                         totalp += glt->inputdatasize;
442                         if (!(glt->flags & GLTEXF_UPLOAD))
443                         {
444                                 loaded++;
445                                 loadedt += glsize;
446                                 loadedp += glt->inputdatasize;
447                         }
448                 }
449         }
450         Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
451 }
452
453 static void R_TextureStats_f(void)
454 {
455         int loaded;
456         gltexture_t *glt;
457         gltexturepool_t *pool;
458         Con_Print("glsize input loaded mip alpha name\n");
459         for (pool = gltexturepoolchain;pool;pool = pool->next)
460         {
461                 for (glt = pool->gltchain;glt;glt = glt->chain)
462                 {
463                         loaded = !(glt->flags & GLTEXF_UPLOAD);
464                         Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
465                 }
466                 Con_Printf("pool %10p\n", pool);
467         }
468         R_TextureStats_PrintTotal();
469 }
470
471 char engineversion[40];
472
473 static void r_textures_start(void)
474 {
475         // deal with size limits of various drivers (3dfx in particular)
476         qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
477         CHECKGLERROR
478         // LordHavoc: allow any alignment
479         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
480         CHECKGLERROR
481
482         // use the largest scrap texture size we can (not sure if this is really a good idea)
483         for (block_size = 1;block_size < realmaxsize && block_size < gl_max_scrapsize.integer;block_size <<= 1);
484
485         texturemempool = Mem_AllocPool("Texture Info", 0, NULL);
486         texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)", 0, NULL);
487         textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers", 0, NULL);
488
489         // Disable JPEG screenshots if the DLL isn't loaded
490         if (! JPEG_OpenLibrary ())
491                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
492 }
493
494 static void r_textures_shutdown(void)
495 {
496         rtexturepool_t *temp;
497
498         JPEG_CloseLibrary ();
499
500         while(gltexturepoolchain)
501         {
502                 temp = (rtexturepool_t *) gltexturepoolchain;
503                 R_FreeTexturePool(&temp);
504         }
505
506         resizebuffersize = 0;
507         texturebuffersize = 0;
508         resizebuffer = NULL;
509         colorconvertbuffer = NULL;
510         texturebuffer = NULL;
511         Mem_FreePool(&texturemempool);
512         Mem_FreePool(&texturedatamempool);
513         Mem_FreePool(&textureprocessingmempool);
514 }
515
516 static void r_textures_newmap(void)
517 {
518 }
519
520 void R_Textures_Init (void)
521 {
522         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
523         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
524         Cvar_RegisterVariable (&gl_max_scrapsize);
525         Cvar_RegisterVariable (&gl_max_size);
526         Cvar_RegisterVariable (&gl_picmip);
527         Cvar_RegisterVariable (&r_lerpimages);
528         Cvar_RegisterVariable (&r_precachetextures);
529         Cvar_RegisterVariable (&gl_texture_anisotropy);
530
531         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
532 }
533
534 void R_Textures_Frame (void)
535 {
536         static int old_aniso = 0;
537
538         // could do procedural texture animation here, if we keep track of which
539         // textures were accessed this frame...
540
541         // free the resize buffers
542         resizebuffersize = 0;
543         if (resizebuffer)
544         {
545                 Mem_Free(resizebuffer);
546                 resizebuffer = NULL;
547         }
548         if (colorconvertbuffer)
549         {
550                 Mem_Free(colorconvertbuffer);
551                 colorconvertbuffer = NULL;
552         }
553
554         if (old_aniso != gl_texture_anisotropy.integer)
555         {
556                 gltextureimage_t *image;
557                 gltexturepool_t *pool;
558                 GLint oldbindtexnum;
559
560                 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
561                 
562                 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
563
564                 for (pool = gltexturepoolchain;pool;pool = pool->next)
565                 {
566                         for (image = pool->imagechain;image;image = image->imagechain)
567                         {
568                                 // only update already uploaded images
569                                 if (!(image->flags & GLTEXF_UPLOAD))
570                                 {
571                                         qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
572
573                                         qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
574                                         qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
575
576                                         qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
577                                 }
578                         }
579                 }
580         }
581 }
582
583 void R_MakeResizeBufferBigger(int size)
584 {
585         if (resizebuffersize < size)
586         {
587                 resizebuffersize = size;
588                 if (resizebuffer)
589                         Mem_Free(resizebuffer);
590                 if (colorconvertbuffer)
591                         Mem_Free(colorconvertbuffer);
592                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
593                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
594                 if (!resizebuffer || !colorconvertbuffer)
595                         Host_Error("R_Upload: out of memory\n");
596         }
597 }
598
599 static void GL_SetupTextureParameters(int flags, int texturetype)
600 {
601         int textureenum = gltexturetypeenums[texturetype];
602         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
603
604         CHECKGLERROR
605
606         if (gl_support_anisotropy)
607         {
608                 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
609                 if (gl_texture_anisotropy.integer != aniso)
610                         Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
611                 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
612         }
613         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
614         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
615         if (gltexturetypedimensions[texturetype] >= 3)
616         {
617                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
618         }
619
620         CHECKGLERROR
621         if (flags & TEXF_FORCENEAREST)
622         {
623                 if (flags & TEXF_MIPMAP)
624                 {
625                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
626                 }
627                 else
628                 {
629                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
630                 }
631                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
632         }
633         else if (flags & TEXF_FORCELINEAR)
634         {
635                 if (flags & TEXF_MIPMAP)
636                 {
637                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
638                         {
639                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
640                         }
641                         else
642                         {
643                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
644                         }
645                 }
646                 else
647                 {
648                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
649                 }
650                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
651         }
652         else
653         {
654                 if (flags & TEXF_MIPMAP)
655                 {
656                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
657                 }
658                 else
659                 {
660                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
661                 }
662                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
663         }
664
665         CHECKGLERROR
666 }
667
668 static void R_Upload(gltexture_t *glt, qbyte *data)
669 {
670         int i, mip, width, height, depth;
671         GLint oldbindtexnum;
672         qbyte *prevbuffer;
673         prevbuffer = data;
674
675         CHECKGLERROR
676
677         glt->texnum = glt->image->texnum;
678         // we need to restore the texture binding after finishing the upload
679         qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
680         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
681         CHECKGLERROR
682         glt->flags &= ~GLTEXF_UPLOAD;
683
684         if (glt->flags & TEXF_FRAGMENT)
685         {
686                 if (glt->image->flags & GLTEXF_UPLOAD)
687                 {
688                         glt->image->flags &= ~GLTEXF_UPLOAD;
689                         Con_DPrint("uploaded new fragments image\n");
690                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
691                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
692                         switch(glt->image->texturetype)
693                         {
694                         case GLTEXTURETYPE_1D:
695                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
696                                 CHECKGLERROR
697                                 break;
698                         case GLTEXTURETYPE_2D:
699                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
700                                 CHECKGLERROR
701                                 break;
702                         case GLTEXTURETYPE_3D:
703                                 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);
704                                 CHECKGLERROR
705                                 break;
706                         default:
707                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
708                                 break;
709                         }
710                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
711                 }
712
713                 if (prevbuffer == NULL)
714                 {
715                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
716                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
717                         prevbuffer = resizebuffer;
718                 }
719                 else if (glt->textype->textype == TEXTYPE_PALETTE)
720                 {
721                         // promote paletted to RGBA, so we only have to worry about RGB and
722                         // RGBA in the rest of this code
723                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
724                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
725                         prevbuffer = colorconvertbuffer;
726                 }
727
728                 switch(glt->image->texturetype)
729                 {
730                 case GLTEXTURETYPE_1D:
731                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
732                         CHECKGLERROR
733                         break;
734                 case GLTEXTURETYPE_2D:
735                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
736                         CHECKGLERROR
737                         break;
738                 case GLTEXTURETYPE_3D:
739                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
740                         CHECKGLERROR
741                         break;
742                 default:
743                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
744                         break;
745                 }
746         }
747         else
748         {
749                 glt->image->flags &= ~GLTEXF_UPLOAD;
750
751                 // these are rounded up versions of the size to do better resampling
752                 for (width  = 1;width  < glt->width ;width  <<= 1);
753                 for (height = 1;height < glt->height;height <<= 1);
754                 for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
755
756                 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
757
758                 if (prevbuffer == NULL)
759                 {
760                         width = glt->image->width;
761                         height = glt->image->height;
762                         depth = glt->image->depth;
763                         memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
764                         prevbuffer = resizebuffer;
765                 }
766                 else
767                 {
768                         if (glt->textype->textype == TEXTYPE_PALETTE)
769                         {
770                                 // promote paletted to RGBA, so we only have to worry about RGB and
771                                 // RGBA in the rest of this code
772                                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
773                                 prevbuffer = colorconvertbuffer;
774                         }
775                 }
776
777                 // cubemaps contain multiple images and thus get processed a bit differently
778                 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
779                 {
780                         if (glt->width != width || glt->height != height || glt->depth != depth)
781                         {
782                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
783                                 prevbuffer = resizebuffer;
784                         }
785                         // picmip/max_size
786                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
787                         {
788                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
789                                 prevbuffer = resizebuffer;
790                         }
791                 }
792                 mip = 0;
793                 switch(glt->image->texturetype)
794                 {
795                 case GLTEXTURETYPE_1D:
796                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
797                         CHECKGLERROR
798                         if (glt->flags & TEXF_MIPMAP)
799                         {
800                                 while (width > 1 || height > 1 || depth > 1)
801                                 {
802                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
803                                         prevbuffer = resizebuffer;
804                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
805                                         CHECKGLERROR
806                                 }
807                         }
808                         break;
809                 case GLTEXTURETYPE_2D:
810                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
811                         CHECKGLERROR
812                         if (glt->flags & TEXF_MIPMAP)
813                         {
814                                 while (width > 1 || height > 1 || depth > 1)
815                                 {
816                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
817                                         prevbuffer = resizebuffer;
818                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
819                                         CHECKGLERROR
820                                 }
821                         }
822                         break;
823                 case GLTEXTURETYPE_3D:
824                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
825                         CHECKGLERROR
826                         if (glt->flags & TEXF_MIPMAP)
827                         {
828                                 while (width > 1 || height > 1 || depth > 1)
829                                 {
830                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
831                                         prevbuffer = resizebuffer;
832                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
833                                         CHECKGLERROR
834                                 }
835                         }
836                         break;
837                 case GLTEXTURETYPE_CUBEMAP:
838                         // convert and upload each side in turn,
839                         // from a continuous block of input texels
840                         texturebuffer = prevbuffer;
841                         for (i = 0;i < 6;i++)
842                         {
843                                 prevbuffer = texturebuffer;
844                                 texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
845                                 if (glt->width != width || glt->height != height || glt->depth != depth)
846                                 {
847                                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
848                                         prevbuffer = resizebuffer;
849                                 }
850                                 // picmip/max_size
851                                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
852                                 {
853                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
854                                         prevbuffer = resizebuffer;
855                                 }
856                                 mip = 0;
857                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
858                                 CHECKGLERROR
859                                 if (glt->flags & TEXF_MIPMAP)
860                                 {
861                                         while (width > 1 || height > 1 || depth > 1)
862                                         {
863                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
864                                                 prevbuffer = resizebuffer;
865                                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
866                                                 CHECKGLERROR
867                                         }
868                                 }
869                         }
870                         break;
871                 }
872                 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
873         }
874         qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
875 }
876
877 static void R_FindImageForTexture(gltexture_t *glt)
878 {
879         int i, j, best, best2, x, y, z, w, h, d, picmip;
880         textypeinfo_t *texinfo;
881         gltexturepool_t *pool;
882         gltextureimage_t *image, **imagechainpointer;
883         texinfo = glt->textype;
884         pool = glt->pool;
885
886         // remains -1 until uploaded
887         glt->texnum = -1;
888
889         x = 0;
890         y = 0;
891         z = 0;
892         w = glt->width;
893         h = glt->height;
894         d = glt->depth;
895         if (glt->flags & TEXF_FRAGMENT)
896         {
897                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
898                 {
899                         image = *imagechainpointer;
900                         if (image->type != GLIMAGETYPE_FRAGMENTS)
901                                 continue;
902                         if (image->texturetype != glt->texturetype)
903                                 continue;
904                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
905                                 continue;
906                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
907                                 continue;
908                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
909                                 continue;
910
911                         // got a fragments texture, find a place in it if we can
912                         for (best = image->width, i = 0;i < image->width - w;i++)
913                         {
914                                 for (best2 = 0, j = 0;j < w;j++)
915                                 {
916                                         if (image->blockallocation[i+j] >= best)
917                                                 break;
918                                         if (best2 < image->blockallocation[i+j])
919                                                 best2 = image->blockallocation[i+j];
920                                 }
921                                 if (j == w)
922                                 {
923                                         // this is a valid spot
924                                         x = i;
925                                         y = best = best2;
926                                 }
927                         }
928
929                         if (best + h > image->height)
930                                 continue;
931
932                         for (i = 0;i < w;i++)
933                                 image->blockallocation[x + i] = best + h;
934
935                         glt->x = x;
936                         glt->y = y;
937                         glt->z = 0;
938                         glt->image = image;
939                         image->texturecount++;
940                         return;
941                 }
942
943                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
944                 if (image == NULL)
945                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
946                 image->type = GLIMAGETYPE_FRAGMENTS;
947                 // make sure the created image is big enough for the fragment
948                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
949                 image->height = 1;
950                 if (gltexturetypedimensions[glt->texturetype] >= 2)
951                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
952                 image->depth = 1;
953                 if (gltexturetypedimensions[glt->texturetype] >= 3)
954                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
955                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
956                 memset(image->blockallocation, 0, image->width * sizeof(short));
957
958                 x = 0;
959                 y = 0;
960                 z = 0;
961                 for (i = 0;i < w;i++)
962                         image->blockallocation[x + i] = y + h;
963         }
964         else
965         {
966                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
967
968                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
969                 if (image == NULL)
970                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
971                 image->type = GLIMAGETYPE_TILE;
972                 image->blockallocation = NULL;
973
974                 picmip = 0;
975                 if (glt->flags & TEXF_PICMIP)
976                         picmip = gl_picmip.integer;
977                 // calculate final size
978                 if (gl_max_size.integer > realmaxsize)
979                         Cvar_SetValue("gl_max_size", realmaxsize);
980                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
981                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
982                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
983                 for (image->width >>= picmip;image->width > gl_max_size.integer;image->width >>= 1);
984                 for (image->height >>= picmip;image->height > gl_max_size.integer;image->height >>= 1);
985                 for (image->depth >>= picmip;image->depth > gl_max_size.integer;image->depth >>= 1);
986                 if (image->width < 1) image->width = 1;
987                 if (image->height < 1) image->height = 1;
988                 if (image->depth < 1) image->depth = 1;
989         }
990         image->texturetype = glt->texturetype;
991         image->glinternalformat = texinfo->glinternalformat;
992         image->glformat = texinfo->glformat;
993         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_PICMIP)) | GLTEXF_UPLOAD;
994         image->bytesperpixel = texinfo->internalbytesperpixel;
995         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
996         // get a texture number to use
997         qglGenTextures(1, &image->texnum);
998         *imagechainpointer = image;
999         image->texturecount++;
1000
1001         glt->x = x;
1002         glt->y = y;
1003         glt->y = z;
1004         glt->image = image;
1005 }
1006
1007 // note: R_FindImageForTexture must be called before this
1008 static void R_UploadTexture (gltexture_t *glt)
1009 {
1010         if (!(glt->flags & GLTEXF_UPLOAD))
1011                 return;
1012
1013         R_Upload(glt, glt->inputtexels);
1014         if (glt->inputtexels)
1015         {
1016                 Mem_Free(glt->inputtexels);
1017                 glt->inputtexels = NULL;
1018                 glt->flags |= GLTEXF_DESTROYED;
1019         }
1020         else if (glt->flags & GLTEXF_DESTROYED)
1021                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
1022 }
1023
1024 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 qbyte *data, const unsigned int *palette)
1025 {
1026         int i, size;
1027         gltexture_t *glt;
1028         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1029         textypeinfo_t *texinfo;
1030
1031         if (cls.state == ca_dedicated)
1032                 return NULL;
1033
1034         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
1035                 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
1036         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
1037                 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
1038         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
1039                 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
1040
1041         /*
1042         glt = R_FindTexture (pool, identifier);
1043         if (glt)
1044         {
1045                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
1046                 R_FreeTexture((rtexture_t *)glt);
1047         }
1048         */
1049
1050         texinfo = R_GetTexTypeInfo(textype, flags);
1051         size = width * height * depth * sides * texinfo->inputbytesperpixel;
1052         if (size < 1)
1053                 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
1054
1055         // clear the alpha flag if the texture has no transparent pixels
1056         switch(textype)
1057         {
1058         case TEXTYPE_PALETTE:
1059                 if (flags & TEXF_ALPHA)
1060                 {
1061                         flags &= ~TEXF_ALPHA;
1062                         if (data)
1063                         {
1064                                 for (i = 0;i < size;i++)
1065                                 {
1066                                         if (((qbyte *)&palette[data[i]])[3] < 255)
1067                                         {
1068                                                 flags |= TEXF_ALPHA;
1069                                                 break;
1070                                         }
1071                                 }
1072                         }
1073                 }
1074                 break;
1075         case TEXTYPE_RGB:
1076                 if (flags & TEXF_ALPHA)
1077                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1078                 break;
1079         case TEXTYPE_RGBA:
1080                 if (flags & TEXF_ALPHA)
1081                 {
1082                         flags &= ~TEXF_ALPHA;
1083                         if (data)
1084                         {
1085                                 for (i = 3;i < size;i += 4)
1086                                 {
1087                                         if (data[i] < 255)
1088                                         {
1089                                                 flags |= TEXF_ALPHA;
1090                                                 break;
1091                                         }
1092                                 }
1093                         }
1094                 }
1095                 break;
1096         case TEXTYPE_DSDT:
1097                 break;
1098         default:
1099                 Host_Error("R_LoadTexture: unknown texture type\n");
1100         }
1101
1102         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1103         if (identifier)
1104         {
1105                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1106                 strcpy (glt->identifier, identifier);
1107         }
1108         else
1109                 glt->identifier = NULL;
1110         glt->pool = pool;
1111         glt->chain = pool->gltchain;
1112         pool->gltchain = glt;
1113         glt->width = width;
1114         glt->height = height;
1115         glt->depth = depth;
1116         glt->flags = flags | GLTEXF_UPLOAD;
1117         glt->textype = texinfo;
1118         glt->texturetype = texturetype;
1119         glt->inputdatasize = size;
1120         glt->palette = palette;
1121
1122         if (data)
1123         {
1124                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1125                 if (glt->inputtexels == NULL)
1126                         Sys_Error("R_LoadTexture: out of memory\n");
1127                 memcpy(glt->inputtexels, data, size);
1128         }
1129         else
1130                 glt->inputtexels = NULL;
1131
1132         R_FindImageForTexture(glt);
1133         R_PrecacheTexture(glt);
1134
1135         return (rtexture_t *)glt;
1136 }
1137
1138 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1139 {
1140         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1141 }
1142
1143 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette)
1144 {
1145         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1146 }
1147
1148 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette)
1149 {
1150         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1151 }
1152
1153 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1154 {
1155         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1156 }
1157
1158 int R_TextureHasAlpha(rtexture_t *rt)
1159 {
1160         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1161 }
1162
1163 int R_TextureWidth(rtexture_t *rt)
1164 {
1165         return rt ? ((gltexture_t *)rt)->width : 0;
1166 }
1167
1168 int R_TextureHeight(rtexture_t *rt)
1169 {
1170         return rt ? ((gltexture_t *)rt)->height : 0;
1171 }
1172
1173 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1174 {
1175         gltexture_t *glt;
1176         float iwidth, iheight, idepth;
1177         if (cls.state == ca_dedicated)
1178         {
1179                 if (x)
1180                         *x = 0;
1181                 if (y)
1182                         *y = 0;
1183                 if (z)
1184                         *z = 0;
1185                 if (fx1 || fy1 || fx2 || fy2)
1186                 {
1187                         if (fx1)
1188                                 *fx1 = 0;
1189                         if (fy1)
1190                                 *fy1 = 0;
1191                         if (fz1)
1192                                 *fz1 = 0;
1193                         if (fx2)
1194                                 *fx2 = 1;
1195                         if (fy2)
1196                                 *fy2 = 1;
1197                         if (fz2)
1198                                 *fz2 = 1;
1199                 }
1200                 return;
1201         }
1202         if (!rt)
1203                 Host_Error("R_FragmentLocation: no texture supplied\n");
1204         glt = (gltexture_t *)rt;
1205         if (glt->flags & TEXF_FRAGMENT)
1206         {
1207                 if (x)
1208                         *x = glt->x;
1209                 if (y)
1210                         *y = glt->y;
1211                 if (fx1 || fy1 || fx2 || fy2)
1212                 {
1213                         iwidth = 1.0f / glt->image->width;
1214                         iheight = 1.0f / glt->image->height;
1215                         idepth = 1.0f / glt->image->depth;
1216                         if (fx1)
1217                                 *fx1 = glt->x * iwidth;
1218                         if (fy1)
1219                                 *fy1 = glt->y * iheight;
1220                         if (fz1)
1221                                 *fz1 = glt->z * idepth;
1222                         if (fx2)
1223                                 *fx2 = (glt->x + glt->width) * iwidth;
1224                         if (fy2)
1225                                 *fy2 = (glt->y + glt->height) * iheight;
1226                         if (fz2)
1227                                 *fz2 = (glt->z + glt->depth) * idepth;
1228                 }
1229         }
1230         else
1231         {
1232                 if (x)
1233                         *x = 0;
1234                 if (y)
1235                         *y = 0;
1236                 if (z)
1237                         *z = 0;
1238                 if (fx1 || fy1 || fx2 || fy2)
1239                 {
1240                         if (fx1)
1241                                 *fx1 = 0;
1242                         if (fy1)
1243                                 *fy1 = 0;
1244                         if (fz1)
1245                                 *fz1 = 0;
1246                         if (fx2)
1247                                 *fx2 = 1;
1248                         if (fy2)
1249                                 *fy2 = 1;
1250                         if (fz2)
1251                                 *fz2 = 1;
1252                 }
1253         }
1254 }
1255
1256 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1257 {
1258         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1259 }
1260
1261 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1262 {
1263         return width;
1264 }
1265
1266 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1267 {
1268         gltexture_t *glt;
1269         if (rt == NULL)
1270                 Host_Error("R_UpdateTexture: no texture supplied\n");
1271         if (data == NULL)
1272                 Host_Error("R_UpdateTexture: no data supplied\n");
1273         glt = (gltexture_t *)rt;
1274
1275         // if it has not been uploaded yet, update the data that will be used when it is
1276         if (glt->inputtexels)
1277                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1278         else
1279                 R_Upload(glt, data);
1280 }
1281