7 cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, note: this is automatically reduced to match video card capabilities (such as 256 on 3Dfx cards before Voodoo4/5)"};
8 cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0", "reduces resolution of textures by powers of 2, for example 1 will halve width/height, reducing texture memory usage by 75%"};
9 cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1", "bilinear filters images when scaling them up to power of 2 size (mode 1), looks better than glquake (mode 0)"};
10 cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1", "0 = never upload textures until used, 1 = upload most textures before use (exceptions: rarely used skin colormap layers), 2 = upload all textures before use (can increase texture memory usage significantly)"};
11 cvar_t gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1", "anisotropic filtering quality (if supported by hardware), 1 sample (no anisotropy) and 8 sample (8 tap anisotropy) are recommended values"};
12 cvar_t gl_texturecompression = {CVAR_SAVE, "gl_texturecompression", "0", "whether to compress textures, a value of 0 disables compression (even if the individual cvars are 1), 1 enables fast (low quality) compression at startup, 2 enables slow (high quality) compression at startup"};
13 cvar_t gl_texturecompression_color = {CVAR_SAVE, "gl_texturecompression_color", "1", "whether to compress colormap (diffuse) textures"};
14 cvar_t gl_texturecompression_normal = {CVAR_SAVE, "gl_texturecompression_normal", "0", "whether to compress normalmap (normalmap) textures"};
15 cvar_t gl_texturecompression_gloss = {CVAR_SAVE, "gl_texturecompression_gloss", "1", "whether to compress glossmap (specular) textures"};
16 cvar_t gl_texturecompression_glow = {CVAR_SAVE, "gl_texturecompression_glow", "1", "whether to compress glowmap (luma) textures"};
17 cvar_t gl_texturecompression_2d = {CVAR_SAVE, "gl_texturecompression_2d", "0", "whether to compress 2d (hud/menu) textures other than the font"};
18 cvar_t gl_texturecompression_q3bsplightmaps = {CVAR_SAVE, "gl_texturecompression_q3bsplightmaps", "0", "whether to compress lightmaps in q3bsp format levels"};
19 cvar_t gl_texturecompression_q3bspdeluxemaps = {CVAR_SAVE, "gl_texturecompression_q3bspdeluxemaps", "0", "whether to compress deluxemaps in q3bsp format levels (only levels compiled with q3map2 -deluxe have these)"};
20 cvar_t gl_texturecompression_sky = {CVAR_SAVE, "gl_texturecompression_sky", "0", "whether to compress sky textures"};
21 cvar_t gl_texturecompression_lightcubemaps = {CVAR_SAVE, "gl_texturecompression_lightcubemaps", "1", "whether to compress light cubemaps (spotlights and other light projection images)"};
23 int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
24 int gl_filter_mag = GL_LINEAR;
27 static mempool_t *texturemempool;
29 // note: this must not conflict with TEXF_ flags in r_textures.h
30 // cleared when a texture is uploaded
31 #define GLTEXF_UPLOAD 0x00010000
32 // bitmask for mismatch checking
33 #define GLTEXF_IMPORTANTBITS (0)
34 // set when image is uploaded and freed
35 #define GLTEXF_DESTROYED 0x00040000
36 // dynamic texture (treat texnum == 0 differently)
37 #define GLTEXF_DYNAMIC 0x00080000
39 typedef struct textypeinfo_s
42 int inputbytesperpixel;
43 int internalbytesperpixel;
44 float glinternalbytesperpixel;
51 static textypeinfo_t textype_palette = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA , 3, GL_UNSIGNED_BYTE};
52 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA , 4, GL_UNSIGNED_BYTE};
53 static textypeinfo_t textype_palette_compress = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_BGRA , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
54 static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_BGRA , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
55 static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, 4.0f, GL_RGBA , 3, GL_UNSIGNED_BYTE};
56 static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, 4.0f, GL_RGBA , 4, GL_UNSIGNED_BYTE};
57 static textypeinfo_t textype_rgba_compress = {TEXTYPE_RGBA , 4, 4, 0.5f, GL_RGBA , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
58 static textypeinfo_t textype_rgba_alpha_compress = {TEXTYPE_RGBA , 4, 4, 1.0f, GL_RGBA , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
59 static textypeinfo_t textype_bgra = {TEXTYPE_BGRA , 4, 4, 4.0f, GL_BGRA , 3, GL_UNSIGNED_BYTE};
60 static textypeinfo_t textype_bgra_alpha = {TEXTYPE_BGRA , 4, 4, 4.0f, GL_BGRA , 4, GL_UNSIGNED_BYTE};
61 static textypeinfo_t textype_bgra_compress = {TEXTYPE_BGRA , 4, 4, 0.5f, GL_BGRA , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
62 static textypeinfo_t textype_bgra_alpha_compress = {TEXTYPE_BGRA , 4, 4, 1.0f, GL_BGRA , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
63 static textypeinfo_t textype_shadowmap = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
64 static textypeinfo_t textype_projection = {TEXTYPE_PROJECTION,4,4,4.0f, GL_LUMINANCE_ALPHA, GL_LUMINANCE16_ALPHA16, GL_UNSIGNED_SHORT};
66 typedef enum gltexturetype_e
71 GLTEXTURETYPE_CUBEMAP,
72 GLTEXTURETYPE_RECTANGLE,
77 static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
78 static int gltexturetypebindingenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB};
79 static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {1, 2, 3, 2, 2};
80 static int cubemapside[6] =
82 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
83 GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
84 GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
85 GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
86 GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
87 GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
90 typedef struct gltexture_s
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
96 // dynamic texture stuff [11/22/2007 Black]
97 // used to hold the texture number of dirty textures
99 updatecallback_t updatecallback;
100 void *updatacallback_data;
101 // --- [11/22/2007 Black]
103 // pointer to texturepool (check this to see if the texture is allocated)
104 struct gltexturepool_s *pool;
105 // pointer to next texture in texturepool chain
106 struct gltexture_s *chain;
107 // name of the texture (this might be removed someday), no duplicates
108 char identifier[MAX_QPATH + 32];
109 // original data size in *inputtexels
110 int inputwidth, inputheight, inputdepth;
111 // copy of the original texture(s) supplied to the upload function, for
112 // delayed uploads (non-precached)
113 unsigned char *inputtexels;
114 // original data size in *inputtexels
116 // flags supplied to the LoadTexture function
117 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
119 // pointer to one of the textype_ structs
120 textypeinfo_t *textype;
121 // one of the GLTEXTURETYPE_ values
123 // palette if the texture is TEXTYPE_PALETTE
124 const unsigned int *palette;
125 // actual stored texture size after gl_picmip and gl_max_size are applied
126 // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
127 int tilewidth, tileheight, tiledepth;
128 // 1 or 6 depending on texturetype
132 // GL_RGB or GL_RGBA or GL_DEPTH_COMPONENT
135 int glinternalformat;
136 // GL_UNSIGNED_BYTE or GL_UNSIGNED_INT or GL_UNSIGNED_SHORT or GL_FLOAT
141 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
143 typedef struct gltexturepool_s
145 unsigned int sentinel;
146 struct gltexture_s *gltchain;
147 struct gltexturepool_s *next;
151 static gltexturepool_t *gltexturepoolchain = NULL;
153 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
154 static int resizebuffersize = 0;
155 static const unsigned char *texturebuffer;
156 static int texturebuffersize = 0;
158 static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
160 if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
162 if (flags & TEXF_ALPHA)
166 case TEXTYPE_PALETTE:
167 return &textype_palette_alpha_compress;
169 return &textype_rgba_alpha_compress;
171 return &textype_bgra_alpha_compress;
173 Host_Error("R_GetTexTypeInfo: unknown texture format");
181 case TEXTYPE_PALETTE:
182 return &textype_palette_compress;
184 return &textype_rgba_compress;
186 return &textype_bgra_compress;
188 Host_Error("R_GetTexTypeInfo: unknown texture format");
195 if (flags & TEXF_ALPHA)
199 case TEXTYPE_PALETTE:
200 return &textype_palette_alpha;
202 return &textype_rgba_alpha;
204 return &textype_bgra_alpha;
206 Host_Error("R_GetTexTypeInfo: unknown texture format");
214 case TEXTYPE_PALETTE:
215 return &textype_palette;
217 return &textype_rgba;
219 return &textype_bgra;
220 case TEXTYPE_SHADOWMAP:
221 return &textype_shadowmap;
222 case TEXTYPE_PROJECTION:
223 return &textype_projection;
225 Host_Error("R_GetTexTypeInfo: unknown texture format");
230 return NULL; // this line only to hush compiler warnings
233 // dynamic texture code [11/22/2007 Black]
234 void R_MarkDirtyTexture(rtexture_t *rt) {
235 gltexture_t *glt = (gltexture_t*) rt;
240 // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
241 if( !glt->dirtytexnum && glt->flags & GLTEXF_DYNAMIC ) {
242 glt->dirtytexnum = glt->texnum;
243 // mark it as dirty, so R_RealGetTexture gets called
248 void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
249 gltexture_t *glt = (gltexture_t*) rt;
254 glt->flags |= GLTEXF_DYNAMIC;
255 glt->updatecallback = updatecallback;
256 glt->updatacallback_data = data;
257 glt->dirtytexnum = 0;
260 static void R_UpdateDynamicTexture(gltexture_t *glt) {
261 glt->texnum = glt->dirtytexnum;
262 // reset dirtytexnum again (not dirty anymore)
263 glt->dirtytexnum = 0;
264 // TODO: now assert that t->texnum != 0 ?
265 if( glt->updatecallback ) {
266 glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
270 static void R_UploadTexture(gltexture_t *t);
272 static void R_PrecacheTexture(gltexture_t *glt)
276 if (glt->flags & TEXF_ALWAYSPRECACHE)
278 else if (r_precachetextures.integer >= 2)
280 else if (r_precachetextures.integer >= 1)
281 if (glt->flags & TEXF_PRECACHE)
285 R_UploadTexture(glt);
288 int R_RealGetTexture(rtexture_t *rt)
293 glt = (gltexture_t *)rt;
294 if (glt->flags & GLTEXF_DYNAMIC)
295 R_UpdateDynamicTexture(glt);
296 if (glt->flags & GLTEXF_UPLOAD)
297 R_UploadTexture(glt);
305 void R_PurgeTexture(rtexture_t *rt)
307 if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
312 void R_FreeTexture(rtexture_t *rt)
314 gltexture_t *glt, **gltpointer;
316 glt = (gltexture_t *)rt;
318 Host_Error("R_FreeTexture: texture == NULL");
320 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
321 if (*gltpointer == glt)
322 *gltpointer = glt->chain;
324 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
326 if (!(glt->flags & GLTEXF_UPLOAD))
329 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
332 if (glt->inputtexels)
333 Mem_Free(glt->inputtexels);
337 rtexturepool_t *R_AllocTexturePool(void)
339 gltexturepool_t *pool;
340 if (texturemempool == NULL)
342 pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
345 pool->next = gltexturepoolchain;
346 gltexturepoolchain = pool;
347 pool->sentinel = TEXTUREPOOL_SENTINEL;
348 return (rtexturepool_t *)pool;
351 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
353 gltexturepool_t *pool, **poolpointer;
354 if (rtexturepool == NULL)
356 if (*rtexturepool == NULL)
358 pool = (gltexturepool_t *)(*rtexturepool);
359 *rtexturepool = NULL;
360 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
361 Host_Error("R_FreeTexturePool: pool already freed");
362 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
363 if (*poolpointer == pool)
364 *poolpointer = pool->next;
366 Host_Error("R_FreeTexturePool: pool not linked");
367 while (pool->gltchain)
368 R_FreeTexture((rtexture_t *)pool->gltchain);
373 typedef struct glmode_s
376 int minification, magnification;
380 static glmode_t modes[6] =
382 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
383 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
384 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
385 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
386 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
387 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
390 static void GL_TextureMode_f (void)
395 gltexturepool_t *pool;
399 for (i = 0;i < 6;i++)
401 if (gl_filter_min == modes[i].minification)
403 Con_Printf("%s\n", modes[i].name);
407 Con_Print("current filter is unknown???\n");
411 for (i = 0;i < 6;i++)
412 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
416 Con_Print("bad filter name\n");
420 gl_filter_min = modes[i].minification;
421 gl_filter_mag = modes[i].magnification;
423 // change all the existing mipmap texture objects
424 // FIXME: force renderer(/client/something?) restart instead?
426 for (pool = gltexturepoolchain;pool;pool = pool->next)
428 for (glt = pool->gltchain;glt;glt = glt->chain)
430 // only update already uploaded images
431 if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
433 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
434 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
435 if (glt->flags & TEXF_MIPMAP)
437 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
441 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
443 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
444 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
450 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
452 int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
454 if (gl_max_size.integer > gl_max_texture_size)
455 Cvar_SetValue("gl_max_size", gl_max_texture_size);
460 case GLTEXTURETYPE_1D:
461 case GLTEXTURETYPE_2D:
462 maxsize = gl_max_texture_size;
464 case GLTEXTURETYPE_3D:
465 maxsize = gl_max_3d_texture_size;
467 case GLTEXTURETYPE_CUBEMAP:
468 maxsize = gl_max_cube_map_texture_size;
472 if (flags & TEXF_PICMIP)
474 maxsize = min(maxsize, gl_max_size.integer);
475 picmip = gl_picmip.integer;
480 if (gl_support_arb_texture_non_power_of_two)
481 width2 = min(inwidth >> picmip, maxsize);
484 for (width2 = 1;width2 < inwidth;width2 <<= 1);
485 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
487 *outwidth = max(1, width2);
491 if (gl_support_arb_texture_non_power_of_two)
492 height2 = min(inheight >> picmip, maxsize);
495 for (height2 = 1;height2 < inheight;height2 <<= 1);
496 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
498 *outheight = max(1, height2);
502 if (gl_support_arb_texture_non_power_of_two)
503 depth2 = min(indepth >> picmip, maxsize);
506 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
507 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
509 *outdepth = max(1, depth2);
514 static int R_CalcTexelDataSize (gltexture_t *glt)
516 int width2, height2, depth2, size;
518 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
520 size = width2 * height2 * depth2;
522 if (glt->flags & TEXF_MIPMAP)
524 while (width2 > 1 || height2 > 1 || depth2 > 1)
532 size += width2 * height2 * depth2;
536 return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
539 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
543 int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
544 int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
546 gltexturepool_t *pool;
548 Con_Print("glsize input loaded mip alpha name\n");
549 for (pool = gltexturepoolchain;pool;pool = pool->next)
557 for (glt = pool->gltchain;glt;glt = glt->chain)
559 glsize = R_CalcTexelDataSize(glt);
560 isloaded = !(glt->flags & GLTEXF_UPLOAD);
562 pooltotalt += glsize;
563 pooltotalp += glt->inputdatasize;
567 poolloadedt += glsize;
568 poolloadedp += glt->inputdatasize;
571 Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", isloaded ? '[' : ' ', (glsize + 1023) / 1024, isloaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', isloaded ? "loaded" : " ", (glt->flags & TEXF_MIPMAP) ? "mip" : " ", (glt->flags & TEXF_ALPHA) ? "alpha" : " ", glt->identifier);
574 Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", (void *)pool, pooltotal, pooltotalt / 1048576.0, pooltotalp / 1048576.0, poolloaded, poolloadedt / 1048576.0, poolloadedp / 1048576.0, pooltotal - poolloaded, (pooltotalt - poolloadedt) / 1048576.0, (pooltotalp - poolloadedp) / 1048576.0);
575 sumtotal += pooltotal;
576 sumtotalt += pooltotalt;
577 sumtotalp += pooltotalp;
578 sumloaded += poolloaded;
579 sumloadedt += poolloadedt;
580 sumloadedp += poolloadedp;
583 Con_Printf("textures total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", sumtotal, sumtotalt / 1048576.0, sumtotalp / 1048576.0, sumloaded, sumloadedt / 1048576.0, sumloadedp / 1048576.0, sumtotal - sumloaded, (sumtotalt - sumloadedt) / 1048576.0, (sumtotalp - sumloadedp) / 1048576.0);
586 static void R_TextureStats_f(void)
588 R_TextureStats_Print(true, true, true);
591 static void r_textures_start(void)
593 // LordHavoc: allow any alignment
595 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
596 qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
598 texturemempool = Mem_AllocPool("texture management", 0, NULL);
600 // Disable JPEG screenshots if the DLL isn't loaded
601 if (! JPEG_OpenLibrary ())
602 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
603 // TODO: support png screenshots?
607 static void r_textures_shutdown(void)
609 rtexturepool_t *temp;
611 JPEG_CloseLibrary ();
613 while(gltexturepoolchain)
615 temp = (rtexturepool_t *) gltexturepoolchain;
616 R_FreeTexturePool(&temp);
619 resizebuffersize = 0;
620 texturebuffersize = 0;
622 colorconvertbuffer = NULL;
623 texturebuffer = NULL;
624 Mem_FreePool(&texturemempool);
627 static void r_textures_newmap(void)
631 void R_Textures_Init (void)
633 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
634 Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
635 Cvar_RegisterVariable (&gl_max_size);
636 Cvar_RegisterVariable (&gl_picmip);
637 Cvar_RegisterVariable (&r_lerpimages);
638 Cvar_RegisterVariable (&r_precachetextures);
639 Cvar_RegisterVariable (&gl_texture_anisotropy);
640 Cvar_RegisterVariable (&gl_texturecompression);
641 Cvar_RegisterVariable (&gl_texturecompression_color);
642 Cvar_RegisterVariable (&gl_texturecompression_normal);
643 Cvar_RegisterVariable (&gl_texturecompression_gloss);
644 Cvar_RegisterVariable (&gl_texturecompression_glow);
645 Cvar_RegisterVariable (&gl_texturecompression_2d);
646 Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
647 Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
648 Cvar_RegisterVariable (&gl_texturecompression_sky);
649 Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
651 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
654 void R_Textures_Frame (void)
656 static int old_aniso = 0;
658 // could do procedural texture animation here, if we keep track of which
659 // textures were accessed this frame...
661 // free the resize buffers
662 resizebuffersize = 0;
665 Mem_Free(resizebuffer);
668 if (colorconvertbuffer)
670 Mem_Free(colorconvertbuffer);
671 colorconvertbuffer = NULL;
674 if (old_aniso != gl_texture_anisotropy.integer)
677 gltexturepool_t *pool;
680 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
682 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
685 for (pool = gltexturepoolchain;pool;pool = pool->next)
687 for (glt = pool->gltchain;glt;glt = glt->chain)
689 // only update already uploaded images
690 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
692 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
694 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
695 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
697 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
704 void R_MakeResizeBufferBigger(int size)
706 if (resizebuffersize < size)
708 resizebuffersize = size;
710 Mem_Free(resizebuffer);
711 if (colorconvertbuffer)
712 Mem_Free(colorconvertbuffer);
713 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
714 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
715 if (!resizebuffer || !colorconvertbuffer)
716 Host_Error("R_Upload: out of memory");
720 static void GL_SetupTextureParameters(int flags, textype_t textype, int texturetype)
722 int textureenum = gltexturetypeenums[texturetype];
723 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
727 if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
729 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
730 if (gl_texture_anisotropy.integer != aniso)
731 Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
732 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
734 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
735 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
736 if (gltexturetypedimensions[texturetype] >= 3)
738 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
742 if (flags & TEXF_FORCENEAREST)
744 if (flags & TEXF_MIPMAP)
746 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
750 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
752 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
754 else if (flags & TEXF_FORCELINEAR)
756 if (flags & TEXF_MIPMAP)
758 if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
760 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
764 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
769 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
771 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
775 if (flags & TEXF_MIPMAP)
777 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
781 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
783 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
786 if (textype == TEXTYPE_SHADOWMAP)
788 if (flags & TEXF_COMPARE)
790 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
794 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
796 qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
797 qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);CHECKGLERROR
803 static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
805 int i, mip, width, height, depth;
807 const unsigned char *prevbuffer;
812 // we need to restore the texture binding after finishing the upload
813 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
814 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
816 // these are rounded up versions of the size to do better resampling
817 if (gl_support_arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
819 width = glt->inputwidth;
820 height = glt->inputheight;
821 depth = glt->inputdepth;
825 for (width = 1;width < glt->inputwidth ;width <<= 1);
826 for (height = 1;height < glt->inputheight;height <<= 1);
827 for (depth = 1;depth < glt->inputdepth ;depth <<= 1);
830 R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
831 R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
833 if (prevbuffer == NULL)
835 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
836 prevbuffer = resizebuffer;
838 else if (glt->textype->textype == TEXTYPE_PALETTE)
840 // promote paletted to BGRA, so we only have to worry about BGRA in the rest of this code
841 Image_Copy8bitBGRA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
842 prevbuffer = colorconvertbuffer;
845 if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
847 // update a portion of the image
848 switch(glt->texturetype)
850 case GLTEXTURETYPE_1D:
851 qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
853 case GLTEXTURETYPE_2D:
854 qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
856 case GLTEXTURETYPE_3D:
857 qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
860 Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
866 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
867 Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
869 // upload the image for the first time
870 glt->flags &= ~GLTEXF_UPLOAD;
872 // cubemaps contain multiple images and thus get processed a bit differently
873 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
875 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
877 Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
878 prevbuffer = resizebuffer;
881 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
883 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
884 prevbuffer = resizebuffer;
888 if (gl_support_texture_compression)
890 if (gl_texturecompression.integer >= 2)
891 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
893 qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
896 switch(glt->texturetype)
898 case GLTEXTURETYPE_1D:
899 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
900 if (glt->flags & TEXF_MIPMAP)
902 while (width > 1 || height > 1 || depth > 1)
904 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
905 prevbuffer = resizebuffer;
906 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
910 case GLTEXTURETYPE_2D:
911 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
912 if (glt->flags & TEXF_MIPMAP)
914 while (width > 1 || height > 1 || depth > 1)
916 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
917 prevbuffer = resizebuffer;
918 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
922 case GLTEXTURETYPE_3D:
923 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
924 if (glt->flags & TEXF_MIPMAP)
926 while (width > 1 || height > 1 || depth > 1)
928 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
929 prevbuffer = resizebuffer;
930 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
934 case GLTEXTURETYPE_CUBEMAP:
935 // convert and upload each side in turn,
936 // from a continuous block of input texels
937 texturebuffer = (unsigned char *)prevbuffer;
938 for (i = 0;i < 6;i++)
940 prevbuffer = texturebuffer;
941 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
942 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
944 Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
945 prevbuffer = resizebuffer;
948 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
950 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
951 prevbuffer = resizebuffer;
954 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
955 if (glt->flags & TEXF_MIPMAP)
957 while (width > 1 || height > 1 || depth > 1)
959 Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
960 prevbuffer = resizebuffer;
961 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
966 case GLTEXTURETYPE_RECTANGLE:
967 qglTexImage2D(GL_TEXTURE_RECTANGLE_ARB, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, NULL);CHECKGLERROR
970 GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
972 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
975 static void R_UploadTexture (gltexture_t *glt)
977 if (!(glt->flags & GLTEXF_UPLOAD))
981 qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
982 R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
983 if (glt->inputtexels)
985 Mem_Free(glt->inputtexels);
986 glt->inputtexels = NULL;
987 glt->flags |= GLTEXF_DESTROYED;
989 else if (glt->flags & GLTEXF_DESTROYED)
990 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
993 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, textype_t textype, int texturetype, const unsigned char *data, const unsigned int *palette)
997 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
998 textypeinfo_t *texinfo;
1000 if (cls.state == ca_dedicated)
1003 if (texturetype == GLTEXTURETYPE_RECTANGLE && !gl_texturerectangle)
1005 Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
1008 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
1010 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
1013 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
1015 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
1019 texinfo = R_GetTexTypeInfo(textype, flags);
1020 size = width * height * depth * sides * texinfo->inputbytesperpixel;
1023 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
1027 // clear the alpha flag if the texture has no transparent pixels
1030 case TEXTYPE_PALETTE:
1031 if (flags & TEXF_ALPHA)
1033 flags &= ~TEXF_ALPHA;
1036 for (i = 0;i < size;i++)
1038 if (((unsigned char *)&palette[data[i]])[3] < 255)
1040 flags |= TEXF_ALPHA;
1049 if (flags & TEXF_ALPHA)
1051 flags &= ~TEXF_ALPHA;
1054 for (i = 3;i < size;i += 4)
1058 flags |= TEXF_ALPHA;
1065 case TEXTYPE_SHADOWMAP:
1066 case TEXTYPE_PROJECTION:
1069 Host_Error("R_LoadTexture: unknown texture type");
1072 glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
1074 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
1076 glt->chain = pool->gltchain;
1077 pool->gltchain = glt;
1078 glt->inputwidth = width;
1079 glt->inputheight = height;
1080 glt->inputdepth = depth;
1081 glt->flags = flags | GLTEXF_UPLOAD;
1082 glt->textype = texinfo;
1083 glt->texturetype = texturetype;
1084 glt->inputdatasize = size;
1085 glt->palette = palette;
1086 glt->glinternalformat = texinfo->glinternalformat;
1087 glt->glformat = texinfo->glformat;
1088 glt->gltype = texinfo->gltype;
1089 glt->bytesperpixel = texinfo->internalbytesperpixel;
1090 glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
1092 // init the dynamic texture attributes, too [11/22/2007 Black]
1093 glt->dirtytexnum = 0;
1094 glt->updatecallback = NULL;
1095 glt->updatacallback_data = NULL;
1099 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
1100 memcpy(glt->inputtexels, data, size);
1103 glt->inputtexels = NULL;
1105 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
1106 R_PrecacheTexture(glt);
1108 // texture converting and uploading can take a while, so make sure we're sending keepalives
1109 CL_KeepaliveMessage(false);
1111 return (rtexture_t *)glt;
1114 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1116 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1119 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1121 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1124 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1126 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1129 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
1131 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1134 rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter)
1136 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
1139 rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter)
1141 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_2D, NULL, NULL);
1144 rtexture_t *R_LoadTextureShadowMapCube(rtexturepool_t *rtexturepool, const char *identifier, int width, qboolean filter)
1146 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
1149 rtexture_t *R_LoadTextureCubeProjection(rtexturepool_t *rtexturepool, const char *identifier, int size, int border)
1151 // maps to a 2x3 texture rectangle with normalized coordinates (must be scaled by size after lookup)
1156 rtexture_t *projection;
1157 unsigned short *data, *texel;
1158 unsigned int sizebits = 0, stepbits = 0, res, i, j, k;
1159 while ((1 << sizebits) < size) sizebits++;
1160 while ((1 << stepbits) <= border) stepbits++;
1161 stepbits = min(stepbits, sizebits);
1162 res = size>>stepbits;
1163 stepbits += 16 - sizebits - 1;
1164 data = (unsigned short *)Mem_Alloc(texturemempool, 2*sizeof(unsigned short)*res*res*6);
1166 for (i = 0;i < 6;i++)
1168 unsigned int x = (i%2)<<16, y = (i/2)<<16;
1169 for (j = 0;j < res;j++)
1171 for (k = 0;k < res;k++)
1173 *texel++ = (x + ((2*k + 1)<<stepbits))/2;
1174 *texel++ = (y + ((2*j + 1)<<stepbits))/3;
1178 projection = R_SetupTexture(rtexturepool, identifier, res, res, 1, 6, TEXF_ALWAYSPRECACHE | TEXF_FORCELINEAR | TEXF_CLAMP, TEXTYPE_PROJECTION, GLTEXTURETYPE_CUBEMAP, (unsigned char *)data, NULL);
1183 int R_TextureHasAlpha(rtexture_t *rt)
1185 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1188 int R_TextureWidth(rtexture_t *rt)
1190 return rt ? ((gltexture_t *)rt)->inputwidth : 0;
1193 int R_TextureHeight(rtexture_t *rt)
1195 return rt ? ((gltexture_t *)rt)->inputheight : 0;
1198 void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height)
1202 Host_Error("R_UpdateTexture: no texture supplied");
1204 Host_Error("R_UpdateTexture: no data supplied");
1205 glt = (gltexture_t *)rt;
1207 // we need it to be uploaded before we can update a part of it
1208 if (glt->flags & GLTEXF_UPLOAD)
1209 R_UploadTexture(glt);
1211 // update part of the texture
1212 R_Upload(glt, data, x, y, 0, width, height, 1);
1215 void R_ClearTexture (rtexture_t *rt)
1217 gltexture_t *glt = (gltexture_t *)rt;
1219 R_Upload( glt, NULL, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth );