5 cvar_t r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
6 cvar_t r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
7 cvar_t r_picmip = {CVAR_SAVE, "r_picmip", "0"};
8 cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
9 cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
11 int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
12 int gl_filter_mag = GL_LINEAR;
15 static mempool_t *texturemempool;
16 static mempool_t *texturedatamempool;
17 static mempool_t *textureprocessingmempool;
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 // size of images which hold fragment textures, ignores picmip and max_size
28 static int block_size;
33 int inputbytesperpixel;
34 int internalbytesperpixel;
40 static textypeinfo_t textype_palette = {TEXTYPE_PALETTE, 1, 4, GL_RGBA, 3};
41 static textypeinfo_t textype_rgb = {TEXTYPE_RGB , 3, 3, GL_RGB , 3};
42 static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 3};
43 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA, 4};
44 static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 4};
46 // a tiling texture (most common type)
47 #define GLIMAGETYPE_TILE 0
48 // a fragments texture (contains one or more fragment textures)
49 #define GLIMAGETYPE_FRAGMENTS 1
51 #define GLTEXTURETYPE_1D 0
52 #define GLTEXTURETYPE_2D 1
53 #define GLTEXTURETYPE_3D 2
54 #define GLTEXTURETYPE_CUBEMAP 3
56 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
57 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
58 static int cubemapside[6] =
60 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
61 GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
62 GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
63 GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
64 GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
65 GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
68 // a gltextureimage can have one (or more if fragments) gltextures inside
69 typedef struct gltextureimage_s
71 struct gltextureimage_s *imagechain;
73 int type; // one of the GLIMAGETYPE_ values
74 int texturetype; // one of the GLTEXTURETYPE_ values
75 int sides; // 1 or 6 depending on texturetype
76 int texnum; // GL texture slot number
77 int width, height, depth; // 3D texture support
78 int bytesperpixel; // bytes per pixel
79 int glformat; // GL_RGB or GL_RGBA
80 int glinternalformat; // 3 or 4
82 short *blockallocation; // fragment allocation (2D only)
86 typedef struct gltexture_s
88 // this field is exposed to the R_GetTexture macro, for speed reasons
89 // (must be identical in rtexture_t)
90 int texnum; // GL texture slot number
92 // pointer to texturepool (check this to see if the texture is allocated)
93 struct gltexturepool_s *pool;
94 // pointer to next texture in texturepool chain
95 struct gltexture_s *chain;
96 // pointer into gltextureimage array
97 gltextureimage_t *image;
98 // name of the texture (this might be removed someday), no duplicates
100 // location in the image, and size
101 int x, y, z, width, height, depth;
102 // copy of the original texture(s) supplied to the upload function, for
103 // delayed uploads (non-precached)
105 // original data size in *inputtexels
107 // flags supplied to the LoadTexture function
108 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
110 // pointer to one of the textype_ structs
111 textypeinfo_t *textype;
112 // one of the GLTEXTURETYPE_ values
114 // palette if the texture is TEXTYPE_PALETTE
115 const unsigned int *palette;
119 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
121 typedef struct gltexturepool_s
124 struct gltextureimage_s *imagechain;
125 struct gltexture_s *gltchain;
126 struct gltexturepool_s *next;
130 static gltexturepool_t *gltexturepoolchain = NULL;
132 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
133 static int resizebuffersize = 0;
134 static qbyte *texturebuffer;
135 static int texturebuffersize = 0;
137 static int realmaxsize = 0;
139 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
141 if (flags & TEXF_ALPHA)
145 case TEXTYPE_PALETTE:
146 return &textype_palette_alpha;
148 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
151 return &textype_rgba_alpha;
153 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
161 case TEXTYPE_PALETTE:
162 return &textype_palette;
166 return &textype_rgba;
168 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
174 static void R_UploadTexture(gltexture_t *t);
176 static void R_PrecacheTexture(gltexture_t *glt)
180 if (glt->flags & TEXF_ALWAYSPRECACHE)
182 else if (r_precachetextures.integer >= 2)
184 else if (r_precachetextures.integer >= 1)
185 if (glt->flags & TEXF_PRECACHE)
189 R_UploadTexture(glt);
192 int R_RealGetTexture(rtexture_t *rt)
197 glt = (gltexture_t *)rt;
198 if (glt->flags & GLTEXF_UPLOAD)
199 R_UploadTexture(glt);
200 glt->texnum = glt->image->texnum;
201 return glt->image->texnum;
207 void R_FreeTexture(rtexture_t *rt)
209 gltexture_t *glt, **gltpointer;
210 gltextureimage_t *image, **gltimagepointer;
212 glt = (gltexture_t *)rt;
214 Host_Error("R_FreeTexture: texture == NULL\n");
216 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
217 if (*gltpointer == glt)
218 *gltpointer = glt->chain;
220 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
222 // note: if freeing a fragment texture, this will not make the claimed
223 // space available for new textures unless all other fragments in the
224 // image are also freed
228 image->texturecount--;
229 if (image->texturecount < 1)
231 for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
232 if (*gltimagepointer == image)
233 *gltimagepointer = image->imagechain;
235 Host_Error("R_FreeTexture: image not linked in pool\n");
237 qglDeleteTextures(1, &image->texnum);
238 if (image->blockallocation)
239 Mem_Free(image->blockallocation);
245 Mem_Free(glt->identifier);
246 if (glt->inputtexels)
247 Mem_Free(glt->inputtexels);
252 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
259 for (glt = pool->gltchain;glt;glt = glt->chain)
260 if (glt->identifier && !strcmp (identifier, glt->identifier))
267 rtexturepool_t *R_AllocTexturePool(void)
269 gltexturepool_t *pool;
270 if (texturemempool == NULL)
272 pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
275 pool->next = gltexturepoolchain;
276 gltexturepoolchain = pool;
277 pool->sentinel = TEXTUREPOOL_SENTINEL;
278 return (rtexturepool_t *)pool;
281 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
283 gltexturepool_t *pool, **poolpointer;
284 if (rtexturepool == NULL)
286 if (*rtexturepool == NULL)
288 pool = (gltexturepool_t *)(*rtexturepool);
289 *rtexturepool = NULL;
290 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
291 Host_Error("R_FreeTexturePool: pool already freed\n");
292 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
293 if (*poolpointer == pool)
294 *poolpointer = pool->next;
296 Host_Error("R_FreeTexturePool: pool not linked\n");
297 while (pool->gltchain)
298 R_FreeTexture((rtexture_t *)pool->gltchain);
299 if (pool->imagechain)
300 Sys_Error("R_FreeTexturePool: not all images freed\n");
308 int minification, magnification;
312 static glmode_t modes[] =
314 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
315 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
316 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
317 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
318 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
319 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
322 extern int gl_backend_rebindtextures;
324 static void GL_TextureMode_f (void)
327 gltextureimage_t *image;
328 gltexturepool_t *pool;
332 for (i = 0;i < 6;i++)
334 if (gl_filter_min == modes[i].minification)
336 Con_Printf ("%s\n", modes[i].name);
340 Con_Printf ("current filter is unknown???\n");
344 for (i = 0;i < 6;i++)
345 if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
349 Con_Printf ("bad filter name\n");
353 gl_filter_min = modes[i].minification;
354 gl_filter_mag = modes[i].magnification;
356 // change all the existing mipmap texture objects
357 // FIXME: force renderer(/client/something?) restart instead?
358 for (pool = gltexturepoolchain;pool;pool = pool->next)
360 for (image = pool->imagechain;image;image = image->imagechain)
362 // only update already uploaded images
363 if (!(image->flags & GLTEXF_UPLOAD))
365 qglBindTexture(GL_TEXTURE_2D, image->texnum);
366 if (image->flags & TEXF_MIPMAP)
367 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
369 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
370 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
374 gl_backend_rebindtextures = true;
377 static int R_CalcTexelDataSize (gltexture_t *glt)
379 int width2, height2, depth2, size;
380 if (glt->flags & TEXF_FRAGMENT)
381 size = glt->width * glt->height * glt->depth;
384 if (r_max_size.integer > realmaxsize)
385 Cvar_SetValue("r_max_size", realmaxsize);
386 // calculate final size
387 for (width2 = 1;width2 < glt->width;width2 <<= 1);
388 for (height2 = 1;height2 < glt->height;height2 <<= 1);
389 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
390 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
391 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
392 for (depth2 >>= r_picmip.integer;depth2 > r_max_size.integer;depth2 >>= 1);
393 if (width2 < 1) width2 = 1;
394 if (height2 < 1) height2 = 1;
395 if (depth2 < 1) depth2 = 1;
398 if (glt->flags & TEXF_MIPMAP)
400 while (width2 > 1 || height2 > 1 || depth2 > 1)
402 size += width2 * height2 * depth2;
410 size++; // count the last 1x1 mipmap
413 size = width2 * height2 * depth2;
415 size *= glt->textype->internalbytesperpixel * glt->image->sides;
420 void R_TextureStats_PrintTotal(void)
422 int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
424 gltexturepool_t *pool;
425 for (pool = gltexturepoolchain;pool;pool = pool->next)
427 for (glt = pool->gltchain;glt;glt = glt->chain)
429 glsize = R_CalcTexelDataSize(glt);
432 totalp += glt->inputdatasize;
433 if (!(glt->flags & GLTEXF_UPLOAD))
437 loadedp += glt->inputdatasize;
441 Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
444 static void R_TextureStats_f(void)
448 gltexturepool_t *pool;
449 Con_Printf("glsize input loaded mip alpha name\n");
450 for (pool = gltexturepoolchain;pool;pool = pool->next)
452 for (glt = pool->gltchain;glt;glt = glt->chain)
454 loaded = !(glt->flags & GLTEXF_UPLOAD);
455 Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', loaded ? "loaded" : " ", (glt->flags & TEXF_MIPMAP) ? "mip" : " ", (glt->flags & TEXF_ALPHA) ? "alpha" : " ", glt->identifier ? glt->identifier : "<unnamed>");
457 Con_Printf("pool %10p\n", pool);
459 R_TextureStats_PrintTotal();
462 char engineversion[40];
464 static void r_textures_start(void)
466 // deal with size limits of various drivers (3dfx in particular)
467 qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
469 // LordHavoc: allow any alignment
470 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
473 // use the largest scrap texture size we can (not sure if this is really a good idea)
474 for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
476 texturemempool = Mem_AllocPool("Texture Info");
477 texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
478 textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
481 static void r_textures_shutdown(void)
483 rtexturepool_t *temp;
484 while(gltexturepoolchain)
486 temp = (rtexturepool_t *) gltexturepoolchain;
487 R_FreeTexturePool(&temp);
490 resizebuffersize = 0;
491 texturebuffersize = 0;
493 colorconvertbuffer = NULL;
494 texturebuffer = NULL;
495 Mem_FreePool(&texturemempool);
496 Mem_FreePool(&texturedatamempool);
497 Mem_FreePool(&textureprocessingmempool);
500 static void r_textures_newmap(void)
504 void R_Textures_Init (void)
506 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
507 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
508 Cvar_RegisterVariable (&r_max_scrapsize);
509 Cvar_RegisterVariable (&r_max_size);
510 Cvar_RegisterVariable (&r_picmip);
511 Cvar_RegisterVariable (&r_lerpimages);
512 Cvar_RegisterVariable (&r_precachetextures);
514 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
517 void R_Textures_Frame (void)
519 // could do procedural texture animation here, if we keep track of which
520 // textures were accessed this frame...
522 // free the resize buffers
523 resizebuffersize = 0;
526 Mem_Free(resizebuffer);
529 if (colorconvertbuffer)
531 Mem_Free(colorconvertbuffer);
532 colorconvertbuffer = NULL;
536 void R_MakeResizeBufferBigger(int size)
538 if (resizebuffersize < size)
540 resizebuffersize = size;
542 Mem_Free(resizebuffer);
543 if (colorconvertbuffer)
544 Mem_Free(colorconvertbuffer);
545 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
546 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
547 if (!resizebuffer || !colorconvertbuffer)
548 Host_Error("R_Upload: out of memory\n");
552 static void GL_SetupTextureParameters(int flags, int texturetype)
554 int textureenum = gltexturetypeenums[texturetype];
555 int wrapmode = (flags & TEXF_CLAMP) ? GL_CLAMP : GL_REPEAT;
559 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
560 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
561 if (gltexturetypedimensions[texturetype] >= 3)
562 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
564 if (flags & TEXF_MIPMAP)
565 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
567 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
568 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
573 static void R_Upload(gltexture_t *glt, qbyte *data)
575 int i, mip, width, height, depth, internalformat;
581 glt->texnum = glt->image->texnum;
582 qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
584 glt->flags &= ~GLTEXF_UPLOAD;
585 gl_backend_rebindtextures = true;
587 if (glt->flags & TEXF_FRAGMENT)
589 if (glt->image->flags & GLTEXF_UPLOAD)
591 glt->image->flags &= ~GLTEXF_UPLOAD;
592 Con_DPrintf("uploaded new fragments image\n");
593 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
594 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
595 switch(glt->image->texturetype)
597 case GLTEXTURETYPE_1D:
598 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
601 case GLTEXTURETYPE_2D:
602 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
605 case GLTEXTURETYPE_3D:
606 qglTexImage3D(GL_TEXTURE_3D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
610 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
613 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
616 if (prevbuffer == NULL)
618 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
619 memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
620 prevbuffer = resizebuffer;
622 else if (glt->textype->textype == TEXTYPE_PALETTE)
624 // promote paletted to RGBA, so we only have to worry about RGB and
625 // RGBA in the rest of this code
626 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
627 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
628 prevbuffer = colorconvertbuffer;
631 switch(glt->image->texturetype)
633 case GLTEXTURETYPE_1D:
634 qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
637 case GLTEXTURETYPE_2D:
638 qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
641 case GLTEXTURETYPE_3D:
642 qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
646 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
649 glt->texnum = glt->image->texnum;
653 glt->image->flags &= ~GLTEXF_UPLOAD;
655 // these are rounded up versions of the size to do better resampling
656 for (width = 1;width < glt->width ;width <<= 1);
657 for (height = 1;height < glt->height;height <<= 1);
658 for (depth = 1;depth < glt->depth ;depth <<= 1);
660 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
662 if (prevbuffer == NULL)
664 width = glt->image->width;
665 height = glt->image->height;
666 depth = glt->image->depth;
667 memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
668 prevbuffer = resizebuffer;
672 if (glt->textype->textype == TEXTYPE_PALETTE)
674 // promote paletted to RGBA, so we only have to worry about RGB and
675 // RGBA in the rest of this code
676 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
677 prevbuffer = colorconvertbuffer;
681 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
683 if (glt->flags & TEXF_ALPHA)
686 // cubemaps contain multiple images and thus get processed a bit differently
687 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
689 if (glt->width != width || glt->height != height || glt->depth != depth)
691 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
692 prevbuffer = resizebuffer;
695 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
697 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
698 prevbuffer = resizebuffer;
702 switch(glt->image->texturetype)
704 case GLTEXTURETYPE_1D:
705 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
707 if (glt->flags & TEXF_MIPMAP)
709 while (width > 1 || height > 1 || depth > 1)
711 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
712 prevbuffer = resizebuffer;
713 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
718 case GLTEXTURETYPE_2D:
719 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
721 if (glt->flags & TEXF_MIPMAP)
723 while (width > 1 || height > 1 || depth > 1)
725 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
726 prevbuffer = resizebuffer;
727 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
732 case GLTEXTURETYPE_3D:
733 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
735 if (glt->flags & TEXF_MIPMAP)
737 while (width > 1 || height > 1 || depth > 1)
739 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
740 prevbuffer = resizebuffer;
741 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
746 case GLTEXTURETYPE_CUBEMAP:
747 // convert and upload each side in turn,
748 // from a continuous block of input texels
749 texturebuffer = prevbuffer;
750 for (i = 0;i < 6;i++)
752 prevbuffer = texturebuffer;
753 texturebuffer += width * height * depth * glt->textype->inputbytesperpixel;
754 if (glt->width != width || glt->height != height || glt->depth != depth)
756 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
757 prevbuffer = resizebuffer;
760 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
762 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
763 prevbuffer = resizebuffer;
766 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
768 if (glt->flags & TEXF_MIPMAP)
770 while (width > 1 || height > 1 || depth > 1)
772 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
773 prevbuffer = resizebuffer;
774 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
781 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
784 static void R_FindImageForTexture(gltexture_t *glt)
786 int i, j, best, best2, x, y, z, w, h, d;
787 textypeinfo_t *texinfo;
788 gltexturepool_t *pool;
789 gltextureimage_t *image, **imagechainpointer;
790 texinfo = glt->textype;
793 // remains -1 until uploaded
802 if (glt->flags & TEXF_FRAGMENT)
804 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
806 image = *imagechainpointer;
807 if (image->type != GLIMAGETYPE_FRAGMENTS)
809 if (image->texturetype != glt->texturetype)
811 if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
813 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
815 if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
818 // got a fragments texture, find a place in it if we can
819 for (best = image->width, i = 0;i < image->width - w;i++)
821 for (best2 = 0, j = 0;j < w;j++)
823 if (image->blockallocation[i+j] >= best)
825 if (best2 < image->blockallocation[i+j])
826 best2 = image->blockallocation[i+j];
830 // this is a valid spot
836 if (best + h > image->height)
839 for (i = 0;i < w;i++)
840 image->blockallocation[x + i] = best + h;
846 image->texturecount++;
850 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
852 Sys_Error("R_FindImageForTexture: ran out of memory\n");
853 image->type = GLIMAGETYPE_FRAGMENTS;
854 // make sure the created image is big enough for the fragment
855 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
857 if (gltexturetypedimensions[glt->texturetype] >= 2)
858 for (image->height = block_size;image->height < glt->height;image->height <<= 1);
860 if (gltexturetypedimensions[glt->texturetype] >= 3)
861 for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
862 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
863 memset(image->blockallocation, 0, image->width * sizeof(short));
868 for (i = 0;i < w;i++)
869 image->blockallocation[x + i] = y + h;
873 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
875 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
877 Sys_Error("R_FindImageForTexture: ran out of memory\n");
878 image->type = GLIMAGETYPE_TILE;
879 image->blockallocation = NULL;
881 // calculate final size
882 if (r_max_size.integer > realmaxsize)
883 Cvar_SetValue("r_max_size", realmaxsize);
884 for (image->width = 1;image->width < glt->width;image->width <<= 1);
885 for (image->height = 1;image->height < glt->height;image->height <<= 1);
886 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
887 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
888 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
889 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
890 if (image->width < 1) image->width = 1;
891 if (image->height < 1) image->height = 1;
892 if (image->depth < 1) image->depth = 1;
894 image->texturetype = glt->texturetype;
895 image->glinternalformat = texinfo->glinternalformat;
896 image->glformat = texinfo->glformat;
897 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
898 image->bytesperpixel = texinfo->internalbytesperpixel;
899 image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
900 // get a texture number to use
901 qglGenTextures(1, &image->texnum);
902 *imagechainpointer = image;
903 image->texturecount++;
911 // note: R_FindImageForTexture must be called before this
912 static void R_UploadTexture (gltexture_t *glt)
914 if (!(glt->flags & GLTEXF_UPLOAD))
917 R_Upload(glt, glt->inputtexels);
918 if (glt->inputtexels)
920 Mem_Free(glt->inputtexels);
921 glt->inputtexels = NULL;
922 glt->flags |= GLTEXF_DESTROYED;
924 else if (glt->flags & GLTEXF_DESTROYED)
925 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
928 static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const qbyte *data, const unsigned int *palette)
932 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
933 textypeinfo_t *texinfo;
935 if (cls.state == ca_dedicated)
938 if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
939 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
940 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
941 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
942 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
943 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
946 glt = R_FindTexture (pool, identifier);
949 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
950 R_FreeTexture((rtexture_t *)glt);
954 texinfo = R_GetTexTypeInfo(textype, flags);
955 size = width * height * depth * sides * texinfo->inputbytesperpixel;
957 // clear the alpha flag if the texture has no transparent pixels
960 case TEXTYPE_PALETTE:
961 if (flags & TEXF_ALPHA)
963 flags &= ~TEXF_ALPHA;
966 for (i = 0;i < size;i++)
968 if (((qbyte *)&palette[data[i]])[3] == 255)
978 if (flags & TEXF_ALPHA)
979 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
982 if (flags & TEXF_ALPHA)
984 flags &= ~TEXF_ALPHA;
987 for (i = 3;i < size;i += 4)
999 Host_Error("R_LoadTexture: unknown texture type\n");
1002 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1005 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1006 strcpy (glt->identifier, identifier);
1009 glt->identifier = NULL;
1011 glt->chain = pool->gltchain;
1012 pool->gltchain = glt;
1014 glt->height = height;
1016 glt->flags = flags | GLTEXF_UPLOAD;
1017 glt->textype = texinfo;
1018 glt->texturetype = texturetype;
1019 glt->inputdatasize = size;
1020 glt->palette = palette;
1024 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1025 if (glt->inputtexels == NULL)
1026 Sys_Error("R_SetupTexture: out of memory\n");
1027 memcpy(glt->inputtexels, data, size);
1030 glt->inputtexels = NULL;
1032 R_FindImageForTexture(glt);
1033 R_PrecacheTexture(glt);
1035 return (rtexture_t *)glt;
1038 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1040 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1043 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette)
1045 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1048 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette)
1050 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1053 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1055 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1058 int R_TextureHasAlpha(rtexture_t *rt)
1060 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1063 int R_TextureWidth(rtexture_t *rt)
1065 return rt ? ((gltexture_t *)rt)->width : 0;
1068 int R_TextureHeight(rtexture_t *rt)
1070 return rt ? ((gltexture_t *)rt)->height : 0;
1073 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1076 float iwidth, iheight, idepth;
1077 if (cls.state == ca_dedicated)
1085 if (fx1 || fy1 || fx2 || fy2)
1103 Host_Error("R_FragmentLocation: no texture supplied\n");
1104 glt = (gltexture_t *)rt;
1105 if (glt->flags & TEXF_FRAGMENT)
1111 if (fx1 || fy1 || fx2 || fy2)
1113 iwidth = 1.0f / glt->image->width;
1114 iheight = 1.0f / glt->image->height;
1115 idepth = 1.0f / glt->image->depth;
1117 *fx1 = glt->x * iwidth;
1119 *fy1 = glt->y * iheight;
1121 *fz1 = glt->z * idepth;
1123 *fx2 = (glt->x + glt->width) * iwidth;
1125 *fy2 = (glt->y + glt->height) * iheight;
1127 *fz2 = (glt->z + glt->depth) * idepth;
1138 if (fx1 || fy1 || fx2 || fy2)
1156 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1158 R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1161 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1166 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1170 Host_Error("R_UpdateTexture: no texture supplied\n");
1172 Host_Error("R_UpdateTexture: no data supplied\n");
1173 glt = (gltexture_t *)rt;
1175 // if it has not been uploaded yet, update the data that will be used when it is
1176 if (glt->inputtexels)
1177 memcpy(glt->inputtexels, data, glt->inputdatasize);
1179 R_Upload(glt, data);