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};
42 static textypeinfo_t textype_dsdt = {TEXTYPE_DSDT , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
44 #define GLTEXTURETYPE_1D 0
45 #define GLTEXTURETYPE_2D 1
46 #define GLTEXTURETYPE_3D 2
47 #define GLTEXTURETYPE_CUBEMAP 3
49 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
50 static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
51 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
52 static int cubemapside[6] =
54 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
55 GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
56 GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
57 GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
58 GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
59 GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
62 typedef struct gltexture_s
64 // this field is exposed to the R_GetTexture macro, for speed reasons
65 // (must be identical in rtexture_t)
66 int texnum; // GL texture slot number
68 // pointer to texturepool (check this to see if the texture is allocated)
69 struct gltexturepool_s *pool;
70 // pointer to next texture in texturepool chain
71 struct gltexture_s *chain;
72 // name of the texture (this might be removed someday), no duplicates
74 // original data size in *inputtexels
75 int inputwidth, inputheight, inputdepth;
76 // copy of the original texture(s) supplied to the upload function, for
77 // delayed uploads (non-precached)
78 unsigned char *inputtexels;
79 // original data size in *inputtexels
81 // flags supplied to the LoadTexture function
82 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
84 // pointer to one of the textype_ structs
85 textypeinfo_t *textype;
86 // one of the GLTEXTURETYPE_ values
88 // palette if the texture is TEXTYPE_PALETTE
89 const unsigned int *palette;
90 // power of 2 size, after gl_picmip and gl_max_size are applied
91 int tilewidth, tileheight, tiledepth;
92 // 1 or 6 depending on texturetype
103 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
105 typedef struct gltexturepool_s
107 unsigned int sentinel;
108 struct gltexture_s *gltchain;
109 struct gltexturepool_s *next;
113 static gltexturepool_t *gltexturepoolchain = NULL;
115 static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
116 static int resizebuffersize = 0;
117 static unsigned char *texturebuffer;
118 static int texturebuffersize = 0;
120 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
122 if (flags & TEXF_ALPHA)
126 case TEXTYPE_PALETTE:
127 return &textype_palette_alpha;
129 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
132 return &textype_rgba_alpha;
134 Host_Error("R_GetTexTypeInfo: unknown texture format");
142 case TEXTYPE_PALETTE:
143 return &textype_palette;
147 return &textype_rgba;
149 return &textype_dsdt;
151 Host_Error("R_GetTexTypeInfo: unknown texture format");
157 static void R_UploadTexture(gltexture_t *t);
159 static void R_PrecacheTexture(gltexture_t *glt)
163 if (glt->flags & TEXF_ALWAYSPRECACHE)
165 else if (r_precachetextures.integer >= 2)
167 else if (r_precachetextures.integer >= 1)
168 if (glt->flags & TEXF_PRECACHE)
172 R_UploadTexture(glt);
175 int R_RealGetTexture(rtexture_t *rt)
180 glt = (gltexture_t *)rt;
181 if (glt->flags & GLTEXF_UPLOAD)
182 R_UploadTexture(glt);
189 void R_FreeTexture(rtexture_t *rt)
191 gltexture_t *glt, **gltpointer;
193 glt = (gltexture_t *)rt;
195 Host_Error("R_FreeTexture: texture == NULL");
197 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
198 if (*gltpointer == glt)
199 *gltpointer = glt->chain;
201 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
204 qglDeleteTextures(1, (GLuint *)&glt->texnum);
206 if (glt->inputtexels)
207 Mem_Free(glt->inputtexels);
211 rtexturepool_t *R_AllocTexturePool(void)
213 gltexturepool_t *pool;
214 if (texturemempool == NULL)
216 pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
219 pool->next = gltexturepoolchain;
220 gltexturepoolchain = pool;
221 pool->sentinel = TEXTUREPOOL_SENTINEL;
222 return (rtexturepool_t *)pool;
225 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
227 gltexturepool_t *pool, **poolpointer;
228 if (rtexturepool == NULL)
230 if (*rtexturepool == NULL)
232 pool = (gltexturepool_t *)(*rtexturepool);
233 *rtexturepool = NULL;
234 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
235 Host_Error("R_FreeTexturePool: pool already freed");
236 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
237 if (*poolpointer == pool)
238 *poolpointer = pool->next;
240 Host_Error("R_FreeTexturePool: pool not linked");
241 while (pool->gltchain)
242 R_FreeTexture((rtexture_t *)pool->gltchain);
247 typedef struct glmode_s
250 int minification, magnification;
254 static glmode_t modes[6] =
256 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
257 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
258 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
259 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
260 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
261 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
264 static void GL_TextureMode_f (void)
269 gltexturepool_t *pool;
273 for (i = 0;i < 6;i++)
275 if (gl_filter_min == modes[i].minification)
277 Con_Printf("%s\n", modes[i].name);
281 Con_Print("current filter is unknown???\n");
285 for (i = 0;i < 6;i++)
286 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
290 Con_Print("bad filter name\n");
294 gl_filter_min = modes[i].minification;
295 gl_filter_mag = modes[i].magnification;
297 // change all the existing mipmap texture objects
298 // FIXME: force renderer(/client/something?) restart instead?
299 for (pool = gltexturepoolchain;pool;pool = pool->next)
301 for (glt = pool->gltchain;glt;glt = glt->chain)
303 // only update already uploaded images
304 if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
306 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
307 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
308 if (glt->flags & TEXF_MIPMAP)
309 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
311 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
312 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
313 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
319 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
321 int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
323 if (gl_max_size.integer > gl_max_texture_size)
324 Cvar_SetValue("gl_max_size", gl_max_texture_size);
329 case GLTEXTURETYPE_1D:
330 case GLTEXTURETYPE_2D:
331 maxsize = gl_max_texture_size;
333 case GLTEXTURETYPE_3D:
334 maxsize = gl_max_3d_texture_size;
336 case GLTEXTURETYPE_CUBEMAP:
337 maxsize = gl_max_cube_map_texture_size;
341 if (flags & TEXF_PICMIP)
343 maxsize = min(maxsize, gl_max_size.integer);
344 picmip = gl_picmip.integer;
349 for (width2 = 1;width2 < inwidth;width2 <<= 1);
350 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
351 *outwidth = max(1, width2);
355 for (height2 = 1;height2 < inheight;height2 <<= 1);
356 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
357 *outheight = max(1, height2);
361 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
362 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
363 *outdepth = max(1, depth2);
368 static int R_CalcTexelDataSize (gltexture_t *glt)
370 int width2, height2, depth2, size;
372 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
374 size = width2 * height2 * depth2;
376 if (glt->flags & TEXF_MIPMAP)
378 while (width2 > 1 || height2 > 1 || depth2 > 1)
386 size += width2 * height2 * depth2;
390 return size * glt->textype->internalbytesperpixel * glt->sides;
393 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
397 int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
398 int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
400 gltexturepool_t *pool;
402 Con_Print("glsize input loaded mip alpha name\n");
403 for (pool = gltexturepoolchain;pool;pool = pool->next)
411 for (glt = pool->gltchain;glt;glt = glt->chain)
413 glsize = R_CalcTexelDataSize(glt);
414 isloaded = !(glt->flags & GLTEXF_UPLOAD);
416 pooltotalt += glsize;
417 pooltotalp += glt->inputdatasize;
421 poolloadedt += glsize;
422 poolloadedp += glt->inputdatasize;
425 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);
428 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);
429 sumtotal += pooltotal;
430 sumtotalt += pooltotalt;
431 sumtotalp += pooltotalp;
432 sumloaded += poolloaded;
433 sumloadedt += poolloadedt;
434 sumloadedp += poolloadedp;
437 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);
440 static void R_TextureStats_f(void)
442 R_TextureStats_Print(true, true, true);
445 static void r_textures_start(void)
447 // LordHavoc: allow any alignment
448 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
451 texturemempool = Mem_AllocPool("texture management", 0, NULL);
453 // Disable JPEG screenshots if the DLL isn't loaded
454 if (! JPEG_OpenLibrary ())
455 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
456 // TODO: support png screenshots?
460 static void r_textures_shutdown(void)
462 rtexturepool_t *temp;
464 JPEG_CloseLibrary ();
466 while(gltexturepoolchain)
468 temp = (rtexturepool_t *) gltexturepoolchain;
469 R_FreeTexturePool(&temp);
472 resizebuffersize = 0;
473 texturebuffersize = 0;
475 colorconvertbuffer = NULL;
476 texturebuffer = NULL;
477 Mem_FreePool(&texturemempool);
480 static void r_textures_newmap(void)
484 void R_Textures_Init (void)
486 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
487 Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
488 Cvar_RegisterVariable (&gl_max_size);
489 Cvar_RegisterVariable (&gl_picmip);
490 Cvar_RegisterVariable (&r_lerpimages);
491 Cvar_RegisterVariable (&r_precachetextures);
492 Cvar_RegisterVariable (&gl_texture_anisotropy);
494 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
497 void R_Textures_Frame (void)
499 static int old_aniso = 0;
501 // could do procedural texture animation here, if we keep track of which
502 // textures were accessed this frame...
504 // free the resize buffers
505 resizebuffersize = 0;
508 Mem_Free(resizebuffer);
511 if (colorconvertbuffer)
513 Mem_Free(colorconvertbuffer);
514 colorconvertbuffer = NULL;
517 if (old_aniso != gl_texture_anisotropy.integer)
520 gltexturepool_t *pool;
523 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
525 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
527 for (pool = gltexturepoolchain;pool;pool = pool->next)
529 for (glt = pool->gltchain;glt;glt = glt->chain)
531 // only update already uploaded images
532 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
534 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
536 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
537 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
539 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
546 void R_MakeResizeBufferBigger(int size)
548 if (resizebuffersize < size)
550 resizebuffersize = size;
552 Mem_Free(resizebuffer);
553 if (colorconvertbuffer)
554 Mem_Free(colorconvertbuffer);
555 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
556 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
557 if (!resizebuffer || !colorconvertbuffer)
558 Host_Error("R_Upload: out of memory");
562 static void GL_SetupTextureParameters(int flags, int texturetype)
564 int textureenum = gltexturetypeenums[texturetype];
565 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
569 if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
571 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
572 if (gl_texture_anisotropy.integer != aniso)
573 Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
574 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
576 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
577 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
578 if (gltexturetypedimensions[texturetype] >= 3)
580 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
584 if (flags & TEXF_FORCENEAREST)
586 if (flags & TEXF_MIPMAP)
588 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
592 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
594 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
596 else if (flags & TEXF_FORCELINEAR)
598 if (flags & TEXF_MIPMAP)
600 if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
602 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
606 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
611 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
613 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
617 if (flags & TEXF_MIPMAP)
619 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
623 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
625 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
631 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
633 int i, mip, width, height, depth;
635 unsigned char *prevbuffer;
640 // we need to restore the texture binding after finishing the upload
641 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
642 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
645 R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
647 if (prevbuffer == NULL)
649 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
650 prevbuffer = resizebuffer;
652 else if (glt->textype->textype == TEXTYPE_PALETTE)
654 // promote paletted to RGBA, so we only have to worry about RGB and
655 // RGBA in the rest of this code
656 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
657 prevbuffer = colorconvertbuffer;
660 // these are rounded up versions of the size to do better resampling
661 for (width = 1;width < glt->inputwidth ;width <<= 1);
662 for (height = 1;height < glt->inputheight;height <<= 1);
663 for (depth = 1;depth < glt->inputdepth ;depth <<= 1);
665 R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
667 if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0)
669 // update a portion of the image
670 switch(glt->texturetype)
672 case GLTEXTURETYPE_1D:
673 qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
676 case GLTEXTURETYPE_2D:
677 qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
680 case GLTEXTURETYPE_3D:
681 qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
685 Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
691 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
692 Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
694 // upload the image for the first time
695 glt->flags &= ~GLTEXF_UPLOAD;
697 // cubemaps contain multiple images and thus get processed a bit differently
698 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
700 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
702 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
703 prevbuffer = resizebuffer;
706 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
708 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
709 prevbuffer = resizebuffer;
713 switch(glt->texturetype)
715 case GLTEXTURETYPE_1D:
716 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
718 if (glt->flags & TEXF_MIPMAP)
720 while (width > 1 || height > 1 || depth > 1)
722 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
723 prevbuffer = resizebuffer;
724 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
729 case GLTEXTURETYPE_2D:
730 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
732 if (glt->flags & TEXF_MIPMAP)
734 while (width > 1 || height > 1 || depth > 1)
736 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
737 prevbuffer = resizebuffer;
738 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
743 case GLTEXTURETYPE_3D:
744 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
746 if (glt->flags & TEXF_MIPMAP)
748 while (width > 1 || height > 1 || depth > 1)
750 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
751 prevbuffer = resizebuffer;
752 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
757 case GLTEXTURETYPE_CUBEMAP:
758 // convert and upload each side in turn,
759 // from a continuous block of input texels
760 texturebuffer = prevbuffer;
761 for (i = 0;i < 6;i++)
763 prevbuffer = texturebuffer;
764 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
765 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
767 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
768 prevbuffer = resizebuffer;
771 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
773 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
774 prevbuffer = resizebuffer;
777 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
779 if (glt->flags & TEXF_MIPMAP)
781 while (width > 1 || height > 1 || depth > 1)
783 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
784 prevbuffer = resizebuffer;
785 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
792 GL_SetupTextureParameters(glt->flags, glt->texturetype);
794 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
797 static void R_UploadTexture (gltexture_t *glt)
799 if (!(glt->flags & GLTEXF_UPLOAD))
802 qglGenTextures(1, (GLuint *)&glt->texnum);
803 R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
804 if (glt->inputtexels)
806 Mem_Free(glt->inputtexels);
807 glt->inputtexels = NULL;
808 glt->flags |= GLTEXF_DESTROYED;
810 else if (glt->flags & GLTEXF_DESTROYED)
811 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
814 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)
818 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
819 textypeinfo_t *texinfo;
821 if (cls.state == ca_dedicated)
824 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
826 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
829 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
831 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
835 texinfo = R_GetTexTypeInfo(textype, flags);
836 size = width * height * depth * sides * texinfo->inputbytesperpixel;
839 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
843 // clear the alpha flag if the texture has no transparent pixels
846 case TEXTYPE_PALETTE:
847 if (flags & TEXF_ALPHA)
849 flags &= ~TEXF_ALPHA;
852 for (i = 0;i < size;i++)
854 if (((unsigned char *)&palette[data[i]])[3] < 255)
864 if (flags & TEXF_ALPHA)
865 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
868 if (flags & TEXF_ALPHA)
870 flags &= ~TEXF_ALPHA;
873 for (i = 3;i < size;i += 4)
887 Host_Error("R_LoadTexture: unknown texture type");
890 glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
892 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
894 glt->chain = pool->gltchain;
895 pool->gltchain = glt;
896 glt->inputwidth = width;
897 glt->inputheight = height;
898 glt->inputdepth = depth;
899 glt->flags = flags | GLTEXF_UPLOAD;
900 glt->textype = texinfo;
901 glt->texturetype = texturetype;
902 glt->inputdatasize = size;
903 glt->palette = palette;
904 glt->glinternalformat = texinfo->glinternalformat;
905 glt->glformat = texinfo->glformat;
906 glt->bytesperpixel = texinfo->internalbytesperpixel;
907 glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
912 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
913 memcpy(glt->inputtexels, data, size);
916 glt->inputtexels = NULL;
918 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
919 R_PrecacheTexture(glt);
921 return (rtexture_t *)glt;
924 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
926 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
929 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)
931 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
934 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)
936 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
939 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
941 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
944 int R_TextureHasAlpha(rtexture_t *rt)
946 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
949 int R_TextureWidth(rtexture_t *rt)
951 return rt ? ((gltexture_t *)rt)->inputwidth : 0;
954 int R_TextureHeight(rtexture_t *rt)
956 return rt ? ((gltexture_t *)rt)->inputheight : 0;
959 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
963 Host_Error("R_UpdateTexture: no texture supplied");
965 Host_Error("R_UpdateTexture: no data supplied");
966 glt = (gltexture_t *)rt;
968 // we need it to be uploaded before we can update a part of it
969 if (glt->flags & GLTEXF_UPLOAD)
970 R_UploadTexture(glt);
972 // update part of the texture
973 R_Upload(glt, data, x, y, 0, width, height, 1);