fixed cubemap upload scaling crash (was using power of 2 size for parsing input,...
[divverent/darkplaces.git] / gl_textures.c
1
2 #include "quakedef.h"
3 #include "image.h"
4 #include "jpeg.h"
5
6 cvar_t  r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
7 cvar_t  r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
8 cvar_t  r_picmip = {CVAR_SAVE, "r_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", "0"};
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_Printf ("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_Printf ("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;
386         if (glt->flags & TEXF_FRAGMENT)
387                 size = glt->width * glt->height * glt->depth;
388         else
389         {
390                 if (r_max_size.integer > realmaxsize)
391                         Cvar_SetValue("r_max_size", realmaxsize);
392                 // calculate final size
393                 for (width2 = 1;width2 < glt->width;width2 <<= 1);
394                 for (height2 = 1;height2 < glt->height;height2 <<= 1);
395                 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
396                 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
397                 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
398                 for (depth2 >>= r_picmip.integer;depth2 > r_max_size.integer;depth2 >>= 1);
399                 if (width2 < 1) width2 = 1;
400                 if (height2 < 1) height2 = 1;
401                 if (depth2 < 1) depth2 = 1;
402
403                 size = 0;
404                 if (glt->flags & TEXF_MIPMAP)
405                 {
406                         while (width2 > 1 || height2 > 1 || depth2 > 1)
407                         {
408                                 size += width2 * height2 * depth2;
409                                 if (width2 > 1)
410                                         width2 >>= 1;
411                                 if (height2 > 1)
412                                         height2 >>= 1;
413                                 if (depth2 > 1)
414                                         depth2 >>= 1;
415                         }
416                         size++; // count the last 1x1 mipmap
417                 }
418                 else
419                         size = width2 * height2 * depth2;
420         }
421         size *= glt->textype->internalbytesperpixel * glt->image->sides;
422
423         return size;
424 }
425
426 void R_TextureStats_PrintTotal(void)
427 {
428         int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
429         gltexture_t *glt;
430         gltexturepool_t *pool;
431         for (pool = gltexturepoolchain;pool;pool = pool->next)
432         {
433                 for (glt = pool->gltchain;glt;glt = glt->chain)
434                 {
435                         glsize = R_CalcTexelDataSize(glt);
436                         total++;
437                         totalt += glsize;
438                         totalp += glt->inputdatasize;
439                         if (!(glt->flags & GLTEXF_UPLOAD))
440                         {
441                                 loaded++;
442                                 loadedt += glsize;
443                                 loadedp += glt->inputdatasize;
444                         }
445                 }
446         }
447         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);
448 }
449
450 static void R_TextureStats_f(void)
451 {
452         int loaded;
453         gltexture_t *glt;
454         gltexturepool_t *pool;
455         Con_Printf("glsize input loaded mip alpha name\n");
456         for (pool = gltexturepoolchain;pool;pool = pool->next)
457         {
458                 for (glt = pool->gltchain;glt;glt = glt->chain)
459                 {
460                         loaded = !(glt->flags & GLTEXF_UPLOAD);
461                         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>");
462                 }
463                 Con_Printf("pool %10p\n", pool);
464         }
465         R_TextureStats_PrintTotal();
466 }
467
468 char engineversion[40];
469
470 static void r_textures_start(void)
471 {
472         // deal with size limits of various drivers (3dfx in particular)
473         qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
474         CHECKGLERROR
475         // LordHavoc: allow any alignment
476         qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
477         CHECKGLERROR
478
479         // use the largest scrap texture size we can (not sure if this is really a good idea)
480         for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
481
482         texturemempool = Mem_AllocPool("Texture Info");
483         texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
484         textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
485
486         // Disable JPEG screenshots if the DLL isn't loaded
487         if (! JPEG_OpenLibrary ())
488                 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
489 }
490
491 static void r_textures_shutdown(void)
492 {
493         rtexturepool_t *temp;
494
495         JPEG_CloseLibrary ();
496
497         while(gltexturepoolchain)
498         {
499                 temp = (rtexturepool_t *) gltexturepoolchain;
500                 R_FreeTexturePool(&temp);
501         }
502
503         resizebuffersize = 0;
504         texturebuffersize = 0;
505         resizebuffer = NULL;
506         colorconvertbuffer = NULL;
507         texturebuffer = NULL;
508         Mem_FreePool(&texturemempool);
509         Mem_FreePool(&texturedatamempool);
510         Mem_FreePool(&textureprocessingmempool);
511 }
512
513 static void r_textures_newmap(void)
514 {
515 }
516
517 void R_Textures_Init (void)
518 {
519         Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
520         Cmd_AddCommand("r_texturestats", R_TextureStats_f);
521         Cvar_RegisterVariable (&r_max_scrapsize);
522         Cvar_RegisterVariable (&r_max_size);
523         Cvar_RegisterVariable (&r_picmip);
524         Cvar_RegisterVariable (&r_lerpimages);
525         Cvar_RegisterVariable (&r_precachetextures);
526         Cvar_RegisterVariable (&gl_texture_anisotropy);
527
528         R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
529 }
530
531 void R_Textures_Frame (void)
532 {
533         // could do procedural texture animation here, if we keep track of which
534         // textures were accessed this frame...
535
536         // free the resize buffers
537         resizebuffersize = 0;
538         if (resizebuffer)
539         {
540                 Mem_Free(resizebuffer);
541                 resizebuffer = NULL;
542         }
543         if (colorconvertbuffer)
544         {
545                 Mem_Free(colorconvertbuffer);
546                 colorconvertbuffer = NULL;
547         }
548 }
549
550 void R_MakeResizeBufferBigger(int size)
551 {
552         if (resizebuffersize < size)
553         {
554                 resizebuffersize = size;
555                 if (resizebuffer)
556                         Mem_Free(resizebuffer);
557                 if (colorconvertbuffer)
558                         Mem_Free(colorconvertbuffer);
559                 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
560                 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
561                 if (!resizebuffer || !colorconvertbuffer)
562                         Host_Error("R_Upload: out of memory\n");
563         }
564 }
565
566 static void GL_SetupTextureParameters(int flags, int texturetype)
567 {
568         int textureenum = gltexturetypeenums[texturetype];
569         int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
570
571         CHECKGLERROR
572
573         if (gl_support_anisotropy)
574                 qglTexParameterf(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_anisotropy.value);
575         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
576         qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
577         if (gltexturetypedimensions[texturetype] >= 3)
578                 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
579
580         if (flags & TEXF_FORCENEAREST)
581         {
582                 if (flags & TEXF_MIPMAP)
583                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
584                 else
585                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
586                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
587         }
588         else if (flags & TEXF_FORCELINEAR)
589         {
590                 if (flags & TEXF_MIPMAP)
591                 {
592                         if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
593                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
594                         else
595                                 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
596                 }
597                 else
598                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
599                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
600         }
601         else
602         {
603                 if (flags & TEXF_MIPMAP)
604                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
605                 else
606                         qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
607                 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
608         }
609
610         CHECKGLERROR
611 }
612
613 static void R_Upload(gltexture_t *glt, qbyte *data)
614 {
615         int i, mip, width, height, depth;
616         GLint oldbindtexnum;
617         qbyte *prevbuffer;
618         prevbuffer = data;
619
620         CHECKGLERROR
621
622         glt->texnum = glt->image->texnum;
623         // we need to restore the texture binding after finishing the upload
624         qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
625         qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
626         CHECKGLERROR
627         glt->flags &= ~GLTEXF_UPLOAD;
628
629         if (glt->flags & TEXF_FRAGMENT)
630         {
631                 if (glt->image->flags & GLTEXF_UPLOAD)
632                 {
633                         glt->image->flags &= ~GLTEXF_UPLOAD;
634                         Con_DPrintf("uploaded new fragments image\n");
635                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
636                         memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
637                         switch(glt->image->texturetype)
638                         {
639                         case GLTEXTURETYPE_1D:
640                                 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
641                                 CHECKGLERROR
642                                 break;
643                         case GLTEXTURETYPE_2D:
644                                 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
645                                 CHECKGLERROR
646                                 break;
647                         case GLTEXTURETYPE_3D:
648                                 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);
649                                 CHECKGLERROR
650                                 break;
651                         default:
652                                 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
653                                 break;
654                         }
655                         GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
656                 }
657
658                 if (prevbuffer == NULL)
659                 {
660                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
661                         memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
662                         prevbuffer = resizebuffer;
663                 }
664                 else if (glt->textype->textype == TEXTYPE_PALETTE)
665                 {
666                         // promote paletted to RGBA, so we only have to worry about RGB and
667                         // RGBA in the rest of this code
668                         R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
669                         Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
670                         prevbuffer = colorconvertbuffer;
671                 }
672
673                 switch(glt->image->texturetype)
674                 {
675                 case GLTEXTURETYPE_1D:
676                         qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
677                         CHECKGLERROR
678                         break;
679                 case GLTEXTURETYPE_2D:
680                         qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
681                         CHECKGLERROR
682                         break;
683                 case GLTEXTURETYPE_3D:
684                         qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
685                         CHECKGLERROR
686                         break;
687                 default:
688                         Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
689                         break;
690                 }
691         }
692         else
693         {
694                 glt->image->flags &= ~GLTEXF_UPLOAD;
695
696                 // these are rounded up versions of the size to do better resampling
697                 for (width  = 1;width  < glt->width ;width  <<= 1);
698                 for (height = 1;height < glt->height;height <<= 1);
699                 for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
700
701                 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
702
703                 if (prevbuffer == NULL)
704                 {
705                         width = glt->image->width;
706                         height = glt->image->height;
707                         depth = glt->image->depth;
708                         memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
709                         prevbuffer = resizebuffer;
710                 }
711                 else
712                 {
713                         if (glt->textype->textype == TEXTYPE_PALETTE)
714                         {
715                                 // promote paletted to RGBA, so we only have to worry about RGB and
716                                 // RGBA in the rest of this code
717                                 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
718                                 prevbuffer = colorconvertbuffer;
719                         }
720                 }
721
722                 // cubemaps contain multiple images and thus get processed a bit differently
723                 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
724                 {
725                         if (glt->width != width || glt->height != height || glt->depth != depth)
726                         {
727                                 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
728                                 prevbuffer = resizebuffer;
729                         }
730                         // picmip/max_size
731                         while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
732                         {
733                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
734                                 prevbuffer = resizebuffer;
735                         }
736                 }
737                 mip = 0;
738                 switch(glt->image->texturetype)
739                 {
740                 case GLTEXTURETYPE_1D:
741                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
742                         CHECKGLERROR
743                         if (glt->flags & TEXF_MIPMAP)
744                         {
745                                 while (width > 1 || height > 1 || depth > 1)
746                                 {
747                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
748                                         prevbuffer = resizebuffer;
749                                         qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
750                                         CHECKGLERROR
751                                 }
752                         }
753                         break;
754                 case GLTEXTURETYPE_2D:
755                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
756                         CHECKGLERROR
757                         if (glt->flags & TEXF_MIPMAP)
758                         {
759                                 while (width > 1 || height > 1 || depth > 1)
760                                 {
761                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
762                                         prevbuffer = resizebuffer;
763                                         qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
764                                         CHECKGLERROR
765                                 }
766                         }
767                         break;
768                 case GLTEXTURETYPE_3D:
769                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
770                         CHECKGLERROR
771                         if (glt->flags & TEXF_MIPMAP)
772                         {
773                                 while (width > 1 || height > 1 || depth > 1)
774                                 {
775                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
776                                         prevbuffer = resizebuffer;
777                                         qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
778                                         CHECKGLERROR
779                                 }
780                         }
781                         break;
782                 case GLTEXTURETYPE_CUBEMAP:
783                         // convert and upload each side in turn,
784                         // from a continuous block of input texels
785                         texturebuffer = prevbuffer;
786                         for (i = 0;i < 6;i++)
787                         {
788                                 prevbuffer = texturebuffer;
789                                 texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
790                                 if (glt->width != width || glt->height != height || glt->depth != depth)
791                                 {
792                                         Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
793                                         prevbuffer = resizebuffer;
794                                 }
795                                 // picmip/max_size
796                                 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
797                                 {
798                                         Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
799                                         prevbuffer = resizebuffer;
800                                 }
801                                 mip = 0;
802                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
803                                 CHECKGLERROR
804                                 if (glt->flags & TEXF_MIPMAP)
805                                 {
806                                         while (width > 1 || height > 1 || depth > 1)
807                                         {
808                                                 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
809                                                 prevbuffer = resizebuffer;
810                                                 qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
811                                                 CHECKGLERROR
812                                         }
813                                 }
814                         }
815                         break;
816                 }
817                 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
818         }
819         qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
820 }
821
822 static void R_FindImageForTexture(gltexture_t *glt)
823 {
824         int i, j, best, best2, x, y, z, w, h, d;
825         textypeinfo_t *texinfo;
826         gltexturepool_t *pool;
827         gltextureimage_t *image, **imagechainpointer;
828         texinfo = glt->textype;
829         pool = glt->pool;
830
831         // remains -1 until uploaded
832         glt->texnum = -1;
833
834         x = 0;
835         y = 0;
836         z = 0;
837         w = glt->width;
838         h = glt->height;
839         d = glt->depth;
840         if (glt->flags & TEXF_FRAGMENT)
841         {
842                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
843                 {
844                         image = *imagechainpointer;
845                         if (image->type != GLIMAGETYPE_FRAGMENTS)
846                                 continue;
847                         if (image->texturetype != glt->texturetype)
848                                 continue;
849                         if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
850                                 continue;
851                         if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
852                                 continue;
853                         if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
854                                 continue;
855
856                         // got a fragments texture, find a place in it if we can
857                         for (best = image->width, i = 0;i < image->width - w;i++)
858                         {
859                                 for (best2 = 0, j = 0;j < w;j++)
860                                 {
861                                         if (image->blockallocation[i+j] >= best)
862                                                 break;
863                                         if (best2 < image->blockallocation[i+j])
864                                                 best2 = image->blockallocation[i+j];
865                                 }
866                                 if (j == w)
867                                 {
868                                         // this is a valid spot
869                                         x = i;
870                                         y = best = best2;
871                                 }
872                         }
873
874                         if (best + h > image->height)
875                                 continue;
876
877                         for (i = 0;i < w;i++)
878                                 image->blockallocation[x + i] = best + h;
879
880                         glt->x = x;
881                         glt->y = y;
882                         glt->z = 0;
883                         glt->image = image;
884                         image->texturecount++;
885                         return;
886                 }
887
888                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
889                 if (image == NULL)
890                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
891                 image->type = GLIMAGETYPE_FRAGMENTS;
892                 // make sure the created image is big enough for the fragment
893                 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
894                 image->height = 1;
895                 if (gltexturetypedimensions[glt->texturetype] >= 2)
896                         for (image->height = block_size;image->height < glt->height;image->height <<= 1);
897                 image->depth = 1;
898                 if (gltexturetypedimensions[glt->texturetype] >= 3)
899                         for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
900                 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
901                 memset(image->blockallocation, 0, image->width * sizeof(short));
902
903                 x = 0;
904                 y = 0;
905                 z = 0;
906                 for (i = 0;i < w;i++)
907                         image->blockallocation[x + i] = y + h;
908         }
909         else
910         {
911                 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
912
913                 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
914                 if (image == NULL)
915                         Sys_Error("R_FindImageForTexture: ran out of memory\n");
916                 image->type = GLIMAGETYPE_TILE;
917                 image->blockallocation = NULL;
918
919                 // calculate final size
920                 if (r_max_size.integer > realmaxsize)
921                         Cvar_SetValue("r_max_size", realmaxsize);
922                 for (image->width = 1;image->width < glt->width;image->width <<= 1);
923                 for (image->height = 1;image->height < glt->height;image->height <<= 1);
924                 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
925                 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
926                 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
927                 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
928                 if (image->width < 1) image->width = 1;
929                 if (image->height < 1) image->height = 1;
930                 if (image->depth < 1) image->depth = 1;
931         }
932         image->texturetype = glt->texturetype;
933         image->glinternalformat = texinfo->glinternalformat;
934         image->glformat = texinfo->glformat;
935         image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
936         image->bytesperpixel = texinfo->internalbytesperpixel;
937         image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
938         // get a texture number to use
939         qglGenTextures(1, &image->texnum);
940         *imagechainpointer = image;
941         image->texturecount++;
942
943         glt->x = x;
944         glt->y = y;
945         glt->y = z;
946         glt->image = image;
947 }
948
949 // note: R_FindImageForTexture must be called before this
950 static void R_UploadTexture (gltexture_t *glt)
951 {
952         if (!(glt->flags & GLTEXF_UPLOAD))
953                 return;
954
955         R_Upload(glt, glt->inputtexels);
956         if (glt->inputtexels)
957         {
958                 Mem_Free(glt->inputtexels);
959                 glt->inputtexels = NULL;
960                 glt->flags |= GLTEXF_DESTROYED;
961         }
962         else if (glt->flags & GLTEXF_DESTROYED)
963                 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
964 }
965
966 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)
967 {
968         int i, size;
969         gltexture_t *glt;
970         gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
971         textypeinfo_t *texinfo;
972
973         if (cls.state == ca_dedicated)
974                 return NULL;
975
976         if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
977                 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
978         if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
979                 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
980         if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
981                 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
982
983         /*
984         glt = R_FindTexture (pool, identifier);
985         if (glt)
986         {
987                 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
988                 R_FreeTexture((rtexture_t *)glt);
989         }
990         */
991
992         texinfo = R_GetTexTypeInfo(textype, flags);
993         size = width * height * depth * sides * texinfo->inputbytesperpixel;
994         if (size < 1)
995                 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
996
997         // clear the alpha flag if the texture has no transparent pixels
998         switch(textype)
999         {
1000         case TEXTYPE_PALETTE:
1001                 if (flags & TEXF_ALPHA)
1002                 {
1003                         flags &= ~TEXF_ALPHA;
1004                         if (data)
1005                         {
1006                                 for (i = 0;i < size;i++)
1007                                 {
1008                                         if (((qbyte *)&palette[data[i]])[3] < 255)
1009                                         {
1010                                                 flags |= TEXF_ALPHA;
1011                                                 break;
1012                                         }
1013                                 }
1014                         }
1015                 }
1016                 break;
1017         case TEXTYPE_RGB:
1018                 if (flags & TEXF_ALPHA)
1019                         Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1020                 break;
1021         case TEXTYPE_RGBA:
1022                 if (flags & TEXF_ALPHA)
1023                 {
1024                         flags &= ~TEXF_ALPHA;
1025                         if (data)
1026                         {
1027                                 for (i = 3;i < size;i += 4)
1028                                 {
1029                                         if (data[i] < 255)
1030                                         {
1031                                                 flags |= TEXF_ALPHA;
1032                                                 break;
1033                                         }
1034                                 }
1035                         }
1036                 }
1037                 break;
1038         case TEXTYPE_DSDT:
1039                 break;
1040         default:
1041                 Host_Error("R_LoadTexture: unknown texture type\n");
1042         }
1043
1044         glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1045         if (identifier)
1046         {
1047                 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1048                 strcpy (glt->identifier, identifier);
1049         }
1050         else
1051                 glt->identifier = NULL;
1052         glt->pool = pool;
1053         glt->chain = pool->gltchain;
1054         pool->gltchain = glt;
1055         glt->width = width;
1056         glt->height = height;
1057         glt->depth = depth;
1058         glt->flags = flags | GLTEXF_UPLOAD;
1059         glt->textype = texinfo;
1060         glt->texturetype = texturetype;
1061         glt->inputdatasize = size;
1062         glt->palette = palette;
1063
1064         if (data)
1065         {
1066                 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1067                 if (glt->inputtexels == NULL)
1068                         Sys_Error("R_LoadTexture: out of memory\n");
1069                 memcpy(glt->inputtexels, data, size);
1070         }
1071         else
1072                 glt->inputtexels = NULL;
1073
1074         R_FindImageForTexture(glt);
1075         R_PrecacheTexture(glt);
1076
1077         return (rtexture_t *)glt;
1078 }
1079
1080 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1081 {
1082         return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1083 }
1084
1085 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)
1086 {
1087         return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1088 }
1089
1090 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)
1091 {
1092         return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1093 }
1094
1095 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1096 {
1097         return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1098 }
1099
1100 int R_TextureHasAlpha(rtexture_t *rt)
1101 {
1102         return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1103 }
1104
1105 int R_TextureWidth(rtexture_t *rt)
1106 {
1107         return rt ? ((gltexture_t *)rt)->width : 0;
1108 }
1109
1110 int R_TextureHeight(rtexture_t *rt)
1111 {
1112         return rt ? ((gltexture_t *)rt)->height : 0;
1113 }
1114
1115 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1116 {
1117         gltexture_t *glt;
1118         float iwidth, iheight, idepth;
1119         if (cls.state == ca_dedicated)
1120         {
1121                 if (x)
1122                         *x = 0;
1123                 if (y)
1124                         *y = 0;
1125                 if (z)
1126                         *z = 0;
1127                 if (fx1 || fy1 || fx2 || fy2)
1128                 {
1129                         if (fx1)
1130                                 *fx1 = 0;
1131                         if (fy1)
1132                                 *fy1 = 0;
1133                         if (fz1)
1134                                 *fz1 = 0;
1135                         if (fx2)
1136                                 *fx2 = 1;
1137                         if (fy2)
1138                                 *fy2 = 1;
1139                         if (fz2)
1140                                 *fz2 = 1;
1141                 }
1142                 return;
1143         }
1144         if (!rt)
1145                 Host_Error("R_FragmentLocation: no texture supplied\n");
1146         glt = (gltexture_t *)rt;
1147         if (glt->flags & TEXF_FRAGMENT)
1148         {
1149                 if (x)
1150                         *x = glt->x;
1151                 if (y)
1152                         *y = glt->y;
1153                 if (fx1 || fy1 || fx2 || fy2)
1154                 {
1155                         iwidth = 1.0f / glt->image->width;
1156                         iheight = 1.0f / glt->image->height;
1157                         idepth = 1.0f / glt->image->depth;
1158                         if (fx1)
1159                                 *fx1 = glt->x * iwidth;
1160                         if (fy1)
1161                                 *fy1 = glt->y * iheight;
1162                         if (fz1)
1163                                 *fz1 = glt->z * idepth;
1164                         if (fx2)
1165                                 *fx2 = (glt->x + glt->width) * iwidth;
1166                         if (fy2)
1167                                 *fy2 = (glt->y + glt->height) * iheight;
1168                         if (fz2)
1169                                 *fz2 = (glt->z + glt->depth) * idepth;
1170                 }
1171         }
1172         else
1173         {
1174                 if (x)
1175                         *x = 0;
1176                 if (y)
1177                         *y = 0;
1178                 if (z)
1179                         *z = 0;
1180                 if (fx1 || fy1 || fx2 || fy2)
1181                 {
1182                         if (fx1)
1183                                 *fx1 = 0;
1184                         if (fy1)
1185                                 *fy1 = 0;
1186                         if (fz1)
1187                                 *fz1 = 0;
1188                         if (fx2)
1189                                 *fx2 = 1;
1190                         if (fy2)
1191                                 *fy2 = 1;
1192                         if (fz2)
1193                                 *fz2 = 1;
1194                 }
1195         }
1196 }
1197
1198 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1199 {
1200         R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1201 }
1202
1203 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1204 {
1205         return width;
1206 }
1207
1208 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1209 {
1210         gltexture_t *glt;
1211         if (rt == NULL)
1212                 Host_Error("R_UpdateTexture: no texture supplied\n");
1213         if (data == NULL)
1214                 Host_Error("R_UpdateTexture: no data supplied\n");
1215         glt = (gltexture_t *)rt;
1216
1217         // if it has not been uploaded yet, update the data that will be used when it is
1218         if (glt->inputtexels)
1219                 memcpy(glt->inputtexels, data, glt->inputdatasize);
1220         else
1221                 R_Upload(glt, data);
1222 }
1223