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"};
13 int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
14 int gl_filter_mag = GL_LINEAR;
17 static mempool_t *texturemempool;
19 // note: this must not conflict with TEXF_ flags in r_textures.h
20 // cleared when a texture is uploaded
21 #define GLTEXF_UPLOAD 0x00010000
22 // bitmask for mismatch checking
23 #define GLTEXF_IMPORTANTBITS (0)
24 // set when image is uploaded and freed
25 #define GLTEXF_DESTROYED 0x00040000
27 typedef struct textypeinfo_s
30 int inputbytesperpixel;
31 int internalbytesperpixel;
37 static textypeinfo_t textype_palette = {TEXTYPE_PALETTE, 1, 4, GL_RGBA , 3};
38 static textypeinfo_t textype_rgb = {TEXTYPE_RGB , 3, 3, GL_RGB , 3};
39 static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, GL_RGBA , 3};
40 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA , 4};
41 static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, GL_RGBA , 4};
43 #define GLTEXTURETYPE_1D 0
44 #define GLTEXTURETYPE_2D 1
45 #define GLTEXTURETYPE_3D 2
46 #define GLTEXTURETYPE_CUBEMAP 3
48 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
49 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
50 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
51 static int cubemapside[6] =
53 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
54 GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
55 GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
56 GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
57 GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
58 GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
61 typedef struct gltexture_s
63 // this field is exposed to the R_GetTexture macro, for speed reasons
64 // (must be identical in rtexture_t)
65 int texnum; // GL texture slot number
67 // pointer to texturepool (check this to see if the texture is allocated)
68 struct gltexturepool_s *pool;
69 // pointer to next texture in texturepool chain
70 struct gltexture_s *chain;
71 // name of the texture (this might be removed someday), no duplicates
73 // original data size in *inputtexels
74 int inputwidth, inputheight, inputdepth;
75 // copy of the original texture(s) supplied to the upload function, for
76 // delayed uploads (non-precached)
77 unsigned char *inputtexels;
78 // original data size in *inputtexels
80 // flags supplied to the LoadTexture function
81 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
83 // pointer to one of the textype_ structs
84 textypeinfo_t *textype;
85 // one of the GLTEXTURETYPE_ values
87 // palette if the texture is TEXTYPE_PALETTE
88 const unsigned int *palette;
89 // power of 2 size, after gl_picmip and gl_max_size are applied
90 int tilewidth, tileheight, tiledepth;
91 // 1 or 6 depending on texturetype
102 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
104 typedef struct gltexturepool_s
106 unsigned int sentinel;
107 struct gltexture_s *gltchain;
108 struct gltexturepool_s *next;
112 static gltexturepool_t *gltexturepoolchain = NULL;
114 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
115 static int resizebuffersize = 0;
116 static unsigned char *texturebuffer;
117 static int texturebuffersize = 0;
119 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
121 if (flags & TEXF_ALPHA)
125 case TEXTYPE_PALETTE:
126 return &textype_palette_alpha;
128 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
131 return &textype_rgba_alpha;
133 Host_Error("R_GetTexTypeInfo: unknown texture format");
141 case TEXTYPE_PALETTE:
142 return &textype_palette;
146 return &textype_rgba;
148 Host_Error("R_GetTexTypeInfo: unknown texture format");
154 static void R_UploadTexture(gltexture_t *t);
156 static void R_PrecacheTexture(gltexture_t *glt)
160 if (glt->flags & TEXF_ALWAYSPRECACHE)
162 else if (r_precachetextures.integer >= 2)
164 else if (r_precachetextures.integer >= 1)
165 if (glt->flags & TEXF_PRECACHE)
169 R_UploadTexture(glt);
172 int R_RealGetTexture(rtexture_t *rt)
177 glt = (gltexture_t *)rt;
178 if (glt->flags & GLTEXF_UPLOAD)
179 R_UploadTexture(glt);
186 void R_FreeTexture(rtexture_t *rt)
188 gltexture_t *glt, **gltpointer;
190 glt = (gltexture_t *)rt;
192 Host_Error("R_FreeTexture: texture == NULL");
194 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
195 if (*gltpointer == glt)
196 *gltpointer = glt->chain;
198 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
201 qglDeleteTextures(1, (GLuint *)&glt->texnum);
203 if (glt->inputtexels)
204 Mem_Free(glt->inputtexels);
208 rtexturepool_t *R_AllocTexturePool(void)
210 gltexturepool_t *pool;
211 if (texturemempool == NULL)
213 pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
216 pool->next = gltexturepoolchain;
217 gltexturepoolchain = pool;
218 pool->sentinel = TEXTUREPOOL_SENTINEL;
219 return (rtexturepool_t *)pool;
222 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
224 gltexturepool_t *pool, **poolpointer;
225 if (rtexturepool == NULL)
227 if (*rtexturepool == NULL)
229 pool = (gltexturepool_t *)(*rtexturepool);
230 *rtexturepool = NULL;
231 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
232 Host_Error("R_FreeTexturePool: pool already freed");
233 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
234 if (*poolpointer == pool)
235 *poolpointer = pool->next;
237 Host_Error("R_FreeTexturePool: pool not linked");
238 while (pool->gltchain)
239 R_FreeTexture((rtexture_t *)pool->gltchain);
244 typedef struct glmode_s
247 int minification, magnification;
251 static glmode_t modes[6] =
253 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
254 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
255 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
256 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
257 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
258 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
261 static void GL_TextureMode_f (void)
266 gltexturepool_t *pool;
270 for (i = 0;i < 6;i++)
272 if (gl_filter_min == modes[i].minification)
274 Con_Printf("%s\n", modes[i].name);
278 Con_Print("current filter is unknown???\n");
282 for (i = 0;i < 6;i++)
283 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
287 Con_Print("bad filter name\n");
291 gl_filter_min = modes[i].minification;
292 gl_filter_mag = modes[i].magnification;
294 // change all the existing mipmap texture objects
295 // FIXME: force renderer(/client/something?) restart instead?
296 for (pool = gltexturepoolchain;pool;pool = pool->next)
298 for (glt = pool->gltchain;glt;glt = glt->chain)
300 // only update already uploaded images
301 if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
303 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
304 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
305 if (glt->flags & TEXF_MIPMAP)
306 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
308 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
309 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
310 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
316 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
318 int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
320 if (gl_max_size.integer > gl_max_texture_size)
321 Cvar_SetValue("gl_max_size", gl_max_texture_size);
326 case GLTEXTURETYPE_1D:
327 case GLTEXTURETYPE_2D:
328 maxsize = gl_max_texture_size;
330 case GLTEXTURETYPE_3D:
331 maxsize = gl_max_3d_texture_size;
333 case GLTEXTURETYPE_CUBEMAP:
334 maxsize = gl_max_cube_map_texture_size;
338 if (flags & TEXF_PICMIP)
340 maxsize = min(maxsize, gl_max_size.integer);
341 picmip = gl_picmip.integer;
346 for (width2 = 1;width2 < inwidth;width2 <<= 1);
347 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
348 *outwidth = max(1, width2);
352 for (height2 = 1;height2 < inheight;height2 <<= 1);
353 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
354 *outheight = max(1, height2);
358 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
359 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
360 *outdepth = max(1, depth2);
365 static int R_CalcTexelDataSize (gltexture_t *glt)
367 int width2, height2, depth2, size;
369 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
371 size = width2 * height2 * depth2;
373 if (glt->flags & TEXF_MIPMAP)
375 while (width2 > 1 || height2 > 1 || depth2 > 1)
383 size += width2 * height2 * depth2;
387 return size * glt->textype->internalbytesperpixel * glt->sides;
390 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
394 int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
395 int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
397 gltexturepool_t *pool;
399 Con_Print("glsize input loaded mip alpha name\n");
400 for (pool = gltexturepoolchain;pool;pool = pool->next)
408 for (glt = pool->gltchain;glt;glt = glt->chain)
410 glsize = R_CalcTexelDataSize(glt);
411 isloaded = !(glt->flags & GLTEXF_UPLOAD);
413 pooltotalt += glsize;
414 pooltotalp += glt->inputdatasize;
418 poolloadedt += glsize;
419 poolloadedp += glt->inputdatasize;
422 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);
425 Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", pool, pooltotal, pooltotalt / 1048576.0, pooltotalp / 1048576.0, poolloaded, poolloadedt / 1048576.0, poolloadedp / 1048576.0, pooltotal - poolloaded, (pooltotalt - poolloadedt) / 1048576.0, (pooltotalp - poolloadedp) / 1048576.0);
426 sumtotal += pooltotal;
427 sumtotalt += pooltotalt;
428 sumtotalp += pooltotalp;
429 sumloaded += poolloaded;
430 sumloadedt += poolloadedt;
431 sumloadedp += poolloadedp;
434 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);
437 static void R_TextureStats_f(void)
439 R_TextureStats_Print(true, true, true);
442 static void r_textures_start(void)
444 // LordHavoc: allow any alignment
445 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
448 texturemempool = Mem_AllocPool("texture management", 0, NULL);
450 // Disable JPEG screenshots if the DLL isn't loaded
451 if (! JPEG_OpenLibrary ())
452 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
453 // TODO: support png screenshots?
457 static void r_textures_shutdown(void)
459 rtexturepool_t *temp;
461 JPEG_CloseLibrary ();
463 while(gltexturepoolchain)
465 temp = (rtexturepool_t *) gltexturepoolchain;
466 R_FreeTexturePool(&temp);
469 resizebuffersize = 0;
470 texturebuffersize = 0;
472 colorconvertbuffer = NULL;
473 texturebuffer = NULL;
474 Mem_FreePool(&texturemempool);
477 static void r_textures_newmap(void)
481 void R_Textures_Init (void)
483 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
484 Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
485 Cvar_RegisterVariable (&gl_max_size);
486 Cvar_RegisterVariable (&gl_picmip);
487 Cvar_RegisterVariable (&r_lerpimages);
488 Cvar_RegisterVariable (&r_precachetextures);
489 Cvar_RegisterVariable (&gl_texture_anisotropy);
491 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
494 void R_Textures_Frame (void)
496 static int old_aniso = 0;
498 // could do procedural texture animation here, if we keep track of which
499 // textures were accessed this frame...
501 // free the resize buffers
502 resizebuffersize = 0;
505 Mem_Free(resizebuffer);
508 if (colorconvertbuffer)
510 Mem_Free(colorconvertbuffer);
511 colorconvertbuffer = NULL;
514 if (old_aniso != gl_texture_anisotropy.integer)
517 gltexturepool_t *pool;
520 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
522 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
524 for (pool = gltexturepoolchain;pool;pool = pool->next)
526 for (glt = pool->gltchain;glt;glt = glt->chain)
528 // only update already uploaded images
529 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
531 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
533 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
534 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
536 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
543 void R_MakeResizeBufferBigger(int size)
545 if (resizebuffersize < size)
547 resizebuffersize = size;
549 Mem_Free(resizebuffer);
550 if (colorconvertbuffer)
551 Mem_Free(colorconvertbuffer);
552 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
553 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
554 if (!resizebuffer || !colorconvertbuffer)
555 Host_Error("R_Upload: out of memory");
559 static void GL_SetupTextureParameters(int flags, int texturetype)
561 int textureenum = gltexturetypeenums[texturetype];
562 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
566 if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
568 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
569 if (gl_texture_anisotropy.integer != aniso)
570 Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
571 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
573 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
574 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
575 if (gltexturetypedimensions[texturetype] >= 3)
577 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
581 if (flags & TEXF_FORCENEAREST)
583 if (flags & TEXF_MIPMAP)
585 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
589 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
591 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
593 else if (flags & TEXF_FORCELINEAR)
595 if (flags & TEXF_MIPMAP)
597 if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
599 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
603 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
608 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
610 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
614 if (flags & TEXF_MIPMAP)
616 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
620 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
622 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
628 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
630 int i, mip, width, height, depth;
632 unsigned char *prevbuffer;
637 // we need to restore the texture binding after finishing the upload
638 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
639 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
642 R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
644 if (prevbuffer == NULL)
646 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
647 prevbuffer = resizebuffer;
649 else if (glt->textype->textype == TEXTYPE_PALETTE)
651 // promote paletted to RGBA, so we only have to worry about RGB and
652 // RGBA in the rest of this code
653 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
654 prevbuffer = colorconvertbuffer;
657 // these are rounded up versions of the size to do better resampling
658 for (width = 1;width < glt->inputwidth ;width <<= 1);
659 for (height = 1;height < glt->inputheight;height <<= 1);
660 for (depth = 1;depth < glt->inputdepth ;depth <<= 1);
662 R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
664 if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0)
666 // update a portion of the image
667 switch(glt->texturetype)
669 case GLTEXTURETYPE_1D:
670 qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
673 case GLTEXTURETYPE_2D:
674 qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
677 case GLTEXTURETYPE_3D:
678 qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
682 Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
688 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
689 Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
691 // upload the image for the first time
692 glt->flags &= ~GLTEXF_UPLOAD;
694 // cubemaps contain multiple images and thus get processed a bit differently
695 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
697 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
699 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
700 prevbuffer = resizebuffer;
703 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
705 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
706 prevbuffer = resizebuffer;
710 switch(glt->texturetype)
712 case GLTEXTURETYPE_1D:
713 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
715 if (glt->flags & TEXF_MIPMAP)
717 while (width > 1 || height > 1 || depth > 1)
719 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
720 prevbuffer = resizebuffer;
721 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
726 case GLTEXTURETYPE_2D:
727 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
729 if (glt->flags & TEXF_MIPMAP)
731 while (width > 1 || height > 1 || depth > 1)
733 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
734 prevbuffer = resizebuffer;
735 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
740 case GLTEXTURETYPE_3D:
741 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
743 if (glt->flags & TEXF_MIPMAP)
745 while (width > 1 || height > 1 || depth > 1)
747 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
748 prevbuffer = resizebuffer;
749 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
754 case GLTEXTURETYPE_CUBEMAP:
755 // convert and upload each side in turn,
756 // from a continuous block of input texels
757 texturebuffer = prevbuffer;
758 for (i = 0;i < 6;i++)
760 prevbuffer = texturebuffer;
761 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
762 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
764 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
765 prevbuffer = resizebuffer;
768 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
770 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
771 prevbuffer = resizebuffer;
774 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
776 if (glt->flags & TEXF_MIPMAP)
778 while (width > 1 || height > 1 || depth > 1)
780 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
781 prevbuffer = resizebuffer;
782 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
789 GL_SetupTextureParameters(glt->flags, glt->texturetype);
791 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
794 static void R_UploadTexture (gltexture_t *glt)
796 if (!(glt->flags & GLTEXF_UPLOAD))
799 qglGenTextures(1, (GLuint *)&glt->texnum);
800 R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
801 if (glt->inputtexels)
803 Mem_Free(glt->inputtexels);
804 glt->inputtexels = NULL;
805 glt->flags |= GLTEXF_DESTROYED;
807 else if (glt->flags & GLTEXF_DESTROYED)
808 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
811 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const unsigned char *data, const unsigned int *palette)
815 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
816 textypeinfo_t *texinfo;
818 if (cls.state == ca_dedicated)
821 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
823 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
826 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
828 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
832 texinfo = R_GetTexTypeInfo(textype, flags);
833 size = width * height * depth * sides * texinfo->inputbytesperpixel;
836 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
840 // clear the alpha flag if the texture has no transparent pixels
843 case TEXTYPE_PALETTE:
844 if (flags & TEXF_ALPHA)
846 flags &= ~TEXF_ALPHA;
849 for (i = 0;i < size;i++)
851 if (((unsigned char *)&palette[data[i]])[3] < 255)
861 if (flags & TEXF_ALPHA)
862 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
865 if (flags & TEXF_ALPHA)
867 flags &= ~TEXF_ALPHA;
870 for (i = 3;i < size;i += 4)
882 Host_Error("R_LoadTexture: unknown texture type");
885 glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
887 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
889 glt->chain = pool->gltchain;
890 pool->gltchain = glt;
891 glt->inputwidth = width;
892 glt->inputheight = height;
893 glt->inputdepth = depth;
894 glt->flags = flags | GLTEXF_UPLOAD;
895 glt->textype = texinfo;
896 glt->texturetype = texturetype;
897 glt->inputdatasize = size;
898 glt->palette = palette;
899 glt->glinternalformat = texinfo->glinternalformat;
900 glt->glformat = texinfo->glformat;
901 glt->bytesperpixel = texinfo->internalbytesperpixel;
902 glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
907 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
908 memcpy(glt->inputtexels, data, size);
911 glt->inputtexels = NULL;
913 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
914 R_PrecacheTexture(glt);
916 return (rtexture_t *)glt;
919 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
921 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
924 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, int textype, int flags, const unsigned int *palette)
926 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
929 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, int textype, int flags, const unsigned int *palette)
931 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
934 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
936 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
939 int R_TextureHasAlpha(rtexture_t *rt)
941 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
944 int R_TextureWidth(rtexture_t *rt)
946 return rt ? ((gltexture_t *)rt)->inputwidth : 0;
949 int R_TextureHeight(rtexture_t *rt)
951 return rt ? ((gltexture_t *)rt)->inputheight : 0;
954 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
958 Host_Error("R_UpdateTexture: no texture supplied");
960 Host_Error("R_UpdateTexture: no data supplied");
961 glt = (gltexture_t *)rt;
963 // we need it to be uploaded before we can update a part of it
964 if (glt->flags & GLTEXF_UPLOAD)
965 R_UploadTexture(glt);
967 // update part of the texture
968 R_Upload(glt, data, x, y, 0, width, height, 1);