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);
203 qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
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?
300 for (pool = gltexturepoolchain;pool;pool = pool->next)
302 for (glt = pool->gltchain;glt;glt = glt->chain)
304 // only update already uploaded images
305 if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
307 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
308 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
309 if (glt->flags & TEXF_MIPMAP)
311 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
315 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
317 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
318 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
324 static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
326 int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
328 if (gl_max_size.integer > gl_max_texture_size)
329 Cvar_SetValue("gl_max_size", gl_max_texture_size);
334 case GLTEXTURETYPE_1D:
335 case GLTEXTURETYPE_2D:
336 maxsize = gl_max_texture_size;
338 case GLTEXTURETYPE_3D:
339 maxsize = gl_max_3d_texture_size;
341 case GLTEXTURETYPE_CUBEMAP:
342 maxsize = gl_max_cube_map_texture_size;
346 if (flags & TEXF_PICMIP)
348 maxsize = min(maxsize, gl_max_size.integer);
349 picmip = gl_picmip.integer;
354 for (width2 = 1;width2 < inwidth;width2 <<= 1);
355 for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
356 *outwidth = max(1, width2);
360 for (height2 = 1;height2 < inheight;height2 <<= 1);
361 for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
362 *outheight = max(1, height2);
366 for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
367 for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
368 *outdepth = max(1, depth2);
373 static int R_CalcTexelDataSize (gltexture_t *glt)
375 int width2, height2, depth2, size;
377 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
379 size = width2 * height2 * depth2;
381 if (glt->flags & TEXF_MIPMAP)
383 while (width2 > 1 || height2 > 1 || depth2 > 1)
391 size += width2 * height2 * depth2;
395 return size * glt->textype->internalbytesperpixel * glt->sides;
398 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
402 int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
403 int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
405 gltexturepool_t *pool;
407 Con_Print("glsize input loaded mip alpha name\n");
408 for (pool = gltexturepoolchain;pool;pool = pool->next)
416 for (glt = pool->gltchain;glt;glt = glt->chain)
418 glsize = R_CalcTexelDataSize(glt);
419 isloaded = !(glt->flags & GLTEXF_UPLOAD);
421 pooltotalt += glsize;
422 pooltotalp += glt->inputdatasize;
426 poolloadedt += glsize;
427 poolloadedp += glt->inputdatasize;
430 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);
433 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);
434 sumtotal += pooltotal;
435 sumtotalt += pooltotalt;
436 sumtotalp += pooltotalp;
437 sumloaded += poolloaded;
438 sumloadedt += poolloadedt;
439 sumloadedp += poolloadedp;
442 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);
445 static void R_TextureStats_f(void)
447 R_TextureStats_Print(true, true, true);
450 static void r_textures_start(void)
452 // LordHavoc: allow any alignment
454 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
455 qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
457 texturemempool = Mem_AllocPool("texture management", 0, NULL);
459 // Disable JPEG screenshots if the DLL isn't loaded
460 if (! JPEG_OpenLibrary ())
461 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
462 // TODO: support png screenshots?
466 static void r_textures_shutdown(void)
468 rtexturepool_t *temp;
470 JPEG_CloseLibrary ();
472 while(gltexturepoolchain)
474 temp = (rtexturepool_t *) gltexturepoolchain;
475 R_FreeTexturePool(&temp);
478 resizebuffersize = 0;
479 texturebuffersize = 0;
481 colorconvertbuffer = NULL;
482 texturebuffer = NULL;
483 Mem_FreePool(&texturemempool);
486 static void r_textures_newmap(void)
490 void R_Textures_Init (void)
492 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
493 Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
494 Cvar_RegisterVariable (&gl_max_size);
495 Cvar_RegisterVariable (&gl_picmip);
496 Cvar_RegisterVariable (&r_lerpimages);
497 Cvar_RegisterVariable (&r_precachetextures);
498 Cvar_RegisterVariable (&gl_texture_anisotropy);
500 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
503 void R_Textures_Frame (void)
505 static int old_aniso = 0;
507 // could do procedural texture animation here, if we keep track of which
508 // textures were accessed this frame...
510 // free the resize buffers
511 resizebuffersize = 0;
514 Mem_Free(resizebuffer);
517 if (colorconvertbuffer)
519 Mem_Free(colorconvertbuffer);
520 colorconvertbuffer = NULL;
523 if (old_aniso != gl_texture_anisotropy.integer)
526 gltexturepool_t *pool;
529 old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
531 Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
534 for (pool = gltexturepoolchain;pool;pool = pool->next)
536 for (glt = pool->gltchain;glt;glt = glt->chain)
538 // only update already uploaded images
539 if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
541 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
543 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
544 qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
546 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
553 void R_MakeResizeBufferBigger(int size)
555 if (resizebuffersize < size)
557 resizebuffersize = size;
559 Mem_Free(resizebuffer);
560 if (colorconvertbuffer)
561 Mem_Free(colorconvertbuffer);
562 resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
563 colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
564 if (!resizebuffer || !colorconvertbuffer)
565 Host_Error("R_Upload: out of memory");
569 static void GL_SetupTextureParameters(int flags, int texturetype)
571 int textureenum = gltexturetypeenums[texturetype];
572 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
576 if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
578 int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
579 if (gl_texture_anisotropy.integer != aniso)
580 Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
581 qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
583 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
584 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
585 if (gltexturetypedimensions[texturetype] >= 3)
587 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
591 if (flags & TEXF_FORCENEAREST)
593 if (flags & TEXF_MIPMAP)
595 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
599 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
601 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
603 else if (flags & TEXF_FORCELINEAR)
605 if (flags & TEXF_MIPMAP)
607 if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
609 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
613 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
618 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
620 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
624 if (flags & TEXF_MIPMAP)
626 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
630 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
632 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
638 static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
640 int i, mip, width, height, depth;
642 unsigned char *prevbuffer;
647 // we need to restore the texture binding after finishing the upload
648 qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
649 qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
651 // these are rounded up versions of the size to do better resampling
652 for (width = 1;width < glt->inputwidth ;width <<= 1);
653 for (height = 1;height < glt->inputheight;height <<= 1);
654 for (depth = 1;depth < glt->inputdepth ;depth <<= 1);
656 R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
657 R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
659 if (prevbuffer == NULL)
661 memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
662 prevbuffer = resizebuffer;
664 else if (glt->textype->textype == TEXTYPE_PALETTE)
666 // promote paletted to RGBA, so we only have to worry about RGB and
667 // RGBA in the rest of this code
668 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
669 prevbuffer = colorconvertbuffer;
672 if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
674 // update a portion of the image
675 switch(glt->texturetype)
677 case GLTEXTURETYPE_1D:
678 qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
680 case GLTEXTURETYPE_2D:
681 qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
683 case GLTEXTURETYPE_3D:
684 qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
687 Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
693 if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
694 Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
696 // upload the image for the first time
697 glt->flags &= ~GLTEXF_UPLOAD;
699 // cubemaps contain multiple images and thus get processed a bit differently
700 if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
702 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
704 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
705 prevbuffer = resizebuffer;
708 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
710 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
711 prevbuffer = resizebuffer;
715 switch(glt->texturetype)
717 case GLTEXTURETYPE_1D:
718 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
719 if (glt->flags & TEXF_MIPMAP)
721 while (width > 1 || height > 1 || depth > 1)
723 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
724 prevbuffer = resizebuffer;
725 qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
729 case GLTEXTURETYPE_2D:
730 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
731 if (glt->flags & TEXF_MIPMAP)
733 while (width > 1 || height > 1 || depth > 1)
735 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
736 prevbuffer = resizebuffer;
737 qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
741 case GLTEXTURETYPE_3D:
742 qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
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);CHECKGLERROR
753 case GLTEXTURETYPE_CUBEMAP:
754 // convert and upload each side in turn,
755 // from a continuous block of input texels
756 texturebuffer = prevbuffer;
757 for (i = 0;i < 6;i++)
759 prevbuffer = texturebuffer;
760 texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
761 if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
763 Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
764 prevbuffer = resizebuffer;
767 while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
769 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
770 prevbuffer = resizebuffer;
773 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
774 if (glt->flags & TEXF_MIPMAP)
776 while (width > 1 || height > 1 || depth > 1)
778 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
779 prevbuffer = resizebuffer;
780 qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
786 GL_SetupTextureParameters(glt->flags, glt->texturetype);
788 qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
791 static void R_UploadTexture (gltexture_t *glt)
793 if (!(glt->flags & GLTEXF_UPLOAD))
797 qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
798 R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
799 if (glt->inputtexels)
801 Mem_Free(glt->inputtexels);
802 glt->inputtexels = NULL;
803 glt->flags |= GLTEXF_DESTROYED;
805 else if (glt->flags & GLTEXF_DESTROYED)
806 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
809 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)
813 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
814 textypeinfo_t *texinfo;
816 if (cls.state == ca_dedicated)
819 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
821 Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
824 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
826 Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
830 texinfo = R_GetTexTypeInfo(textype, flags);
831 size = width * height * depth * sides * texinfo->inputbytesperpixel;
834 Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
838 // clear the alpha flag if the texture has no transparent pixels
841 case TEXTYPE_PALETTE:
842 if (flags & TEXF_ALPHA)
844 flags &= ~TEXF_ALPHA;
847 for (i = 0;i < size;i++)
849 if (((unsigned char *)&palette[data[i]])[3] < 255)
859 if (flags & TEXF_ALPHA)
860 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
863 if (flags & TEXF_ALPHA)
865 flags &= ~TEXF_ALPHA;
868 for (i = 3;i < size;i += 4)
880 Host_Error("R_LoadTexture: unknown texture type");
883 glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
885 strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
887 glt->chain = pool->gltchain;
888 pool->gltchain = glt;
889 glt->inputwidth = width;
890 glt->inputheight = height;
891 glt->inputdepth = depth;
892 glt->flags = flags | GLTEXF_UPLOAD;
893 glt->textype = texinfo;
894 glt->texturetype = texturetype;
895 glt->inputdatasize = size;
896 glt->palette = palette;
897 glt->glinternalformat = texinfo->glinternalformat;
898 glt->glformat = texinfo->glformat;
899 glt->bytesperpixel = texinfo->internalbytesperpixel;
900 glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
905 glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
906 memcpy(glt->inputtexels, data, size);
909 glt->inputtexels = NULL;
911 GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
912 R_PrecacheTexture(glt);
914 return (rtexture_t *)glt;
917 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
919 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
922 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)
924 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
927 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)
929 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
932 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
934 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
937 int R_TextureHasAlpha(rtexture_t *rt)
939 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
942 int R_TextureWidth(rtexture_t *rt)
944 return rt ? ((gltexture_t *)rt)->inputwidth : 0;
947 int R_TextureHeight(rtexture_t *rt)
949 return rt ? ((gltexture_t *)rt)->inputheight : 0;
952 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
956 Host_Error("R_UpdateTexture: no texture supplied");
958 Host_Error("R_UpdateTexture: no data supplied");
959 glt = (gltexture_t *)rt;
961 // we need it to be uploaded before we can update a part of it
962 if (glt->flags & GLTEXF_UPLOAD)
963 R_UploadTexture(glt);
965 // update part of the texture
966 R_Upload(glt, data, x, y, 0, width, height, 1);