6 cvar_t r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
7 cvar_t r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
8 cvar_t r_picmip = {CVAR_SAVE, "r_picmip", "0"};
9 cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
10 cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
12 int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
13 int gl_filter_mag = GL_LINEAR;
16 static mempool_t *texturemempool;
17 static mempool_t *texturedatamempool;
18 static mempool_t *textureprocessingmempool;
20 // note: this must not conflict with TEXF_ flags in r_textures.h
21 // cleared when a texture is uploaded
22 #define GLTEXF_UPLOAD 0x00010000
23 // bitmask for mismatch checking
24 #define GLTEXF_IMPORTANTBITS (0)
25 // set when image is uploaded and freed
26 #define GLTEXF_DESTROYED 0x00040000
28 // size of images which hold fragment textures, ignores picmip and max_size
29 static int block_size;
34 int inputbytesperpixel;
35 int internalbytesperpixel;
41 static textypeinfo_t textype_palette = {TEXTYPE_PALETTE, 1, 4, GL_RGBA, 3};
42 static textypeinfo_t textype_rgb = {TEXTYPE_RGB , 3, 3, GL_RGB , 3};
43 static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 3};
44 static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA, 4};
45 static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 4};
47 // a tiling texture (most common type)
48 #define GLIMAGETYPE_TILE 0
49 // a fragments texture (contains one or more fragment textures)
50 #define GLIMAGETYPE_FRAGMENTS 1
52 #define GLTEXTURETYPE_1D 0
53 #define GLTEXTURETYPE_2D 1
54 #define GLTEXTURETYPE_3D 2
55 #define GLTEXTURETYPE_CUBEMAP 3
57 static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
58 static int gltexturetypedimensions[4] = {1, 2, 3, 2};
59 static int cubemapside[6] =
61 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
62 GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
63 GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
64 GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
65 GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
66 GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
69 // a gltextureimage can have one (or more if fragments) gltextures inside
70 typedef struct gltextureimage_s
72 struct gltextureimage_s *imagechain;
74 int type; // one of the GLIMAGETYPE_ values
75 int texturetype; // one of the GLTEXTURETYPE_ values
76 int sides; // 1 or 6 depending on texturetype
77 int texnum; // GL texture slot number
78 int width, height, depth; // 3D texture support
79 int bytesperpixel; // bytes per pixel
80 int glformat; // GL_RGB or GL_RGBA
81 int glinternalformat; // 3 or 4
83 short *blockallocation; // fragment allocation (2D only)
87 typedef struct gltexture_s
89 // this field is exposed to the R_GetTexture macro, for speed reasons
90 // (must be identical in rtexture_t)
91 int texnum; // GL texture slot number
93 // pointer to texturepool (check this to see if the texture is allocated)
94 struct gltexturepool_s *pool;
95 // pointer to next texture in texturepool chain
96 struct gltexture_s *chain;
97 // pointer into gltextureimage array
98 gltextureimage_t *image;
99 // name of the texture (this might be removed someday), no duplicates
101 // location in the image, and size
102 int x, y, z, width, height, depth;
103 // copy of the original texture(s) supplied to the upload function, for
104 // delayed uploads (non-precached)
106 // original data size in *inputtexels
108 // flags supplied to the LoadTexture function
109 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
111 // pointer to one of the textype_ structs
112 textypeinfo_t *textype;
113 // one of the GLTEXTURETYPE_ values
115 // palette if the texture is TEXTYPE_PALETTE
116 const unsigned int *palette;
120 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
122 typedef struct gltexturepool_s
124 unsigned int sentinel;
125 struct gltextureimage_s *imagechain;
126 struct gltexture_s *gltchain;
127 struct gltexturepool_s *next;
131 static gltexturepool_t *gltexturepoolchain = NULL;
133 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
134 static int resizebuffersize = 0;
135 static qbyte *texturebuffer;
136 static int texturebuffersize = 0;
138 static int realmaxsize = 0;
140 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
142 if (flags & TEXF_ALPHA)
146 case TEXTYPE_PALETTE:
147 return &textype_palette_alpha;
149 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
152 return &textype_rgba_alpha;
154 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
162 case TEXTYPE_PALETTE:
163 return &textype_palette;
167 return &textype_rgba;
169 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
175 static void R_UploadTexture(gltexture_t *t);
177 static void R_PrecacheTexture(gltexture_t *glt)
181 if (glt->flags & TEXF_ALWAYSPRECACHE)
183 else if (r_precachetextures.integer >= 2)
185 else if (r_precachetextures.integer >= 1)
186 if (glt->flags & TEXF_PRECACHE)
190 R_UploadTexture(glt);
193 int R_RealGetTexture(rtexture_t *rt)
198 glt = (gltexture_t *)rt;
199 if (glt->flags & GLTEXF_UPLOAD)
200 R_UploadTexture(glt);
201 glt->texnum = glt->image->texnum;
202 return glt->image->texnum;
208 void R_FreeTexture(rtexture_t *rt)
210 gltexture_t *glt, **gltpointer;
211 gltextureimage_t *image, **gltimagepointer;
213 glt = (gltexture_t *)rt;
215 Host_Error("R_FreeTexture: texture == NULL\n");
217 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
218 if (*gltpointer == glt)
219 *gltpointer = glt->chain;
221 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
223 // note: if freeing a fragment texture, this will not make the claimed
224 // space available for new textures unless all other fragments in the
225 // image are also freed
229 image->texturecount--;
230 if (image->texturecount < 1)
232 for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
233 if (*gltimagepointer == image)
234 *gltimagepointer = image->imagechain;
236 Host_Error("R_FreeTexture: image not linked in pool\n");
238 qglDeleteTextures(1, &image->texnum);
239 if (image->blockallocation)
240 Mem_Free(image->blockallocation);
246 Mem_Free(glt->identifier);
247 if (glt->inputtexels)
248 Mem_Free(glt->inputtexels);
253 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
260 for (glt = pool->gltchain;glt;glt = glt->chain)
261 if (glt->identifier && !strcmp (identifier, glt->identifier))
268 rtexturepool_t *R_AllocTexturePool(void)
270 gltexturepool_t *pool;
271 if (texturemempool == NULL)
273 pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
276 pool->next = gltexturepoolchain;
277 gltexturepoolchain = pool;
278 pool->sentinel = TEXTUREPOOL_SENTINEL;
279 return (rtexturepool_t *)pool;
282 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
284 gltexturepool_t *pool, **poolpointer;
285 if (rtexturepool == NULL)
287 if (*rtexturepool == NULL)
289 pool = (gltexturepool_t *)(*rtexturepool);
290 *rtexturepool = NULL;
291 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
292 Host_Error("R_FreeTexturePool: pool already freed\n");
293 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
294 if (*poolpointer == pool)
295 *poolpointer = pool->next;
297 Host_Error("R_FreeTexturePool: pool not linked\n");
298 while (pool->gltchain)
299 R_FreeTexture((rtexture_t *)pool->gltchain);
300 if (pool->imagechain)
301 Sys_Error("R_FreeTexturePool: not all images freed\n");
309 int minification, magnification;
313 static glmode_t modes[] =
315 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
316 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
317 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
318 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
319 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
320 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
323 extern int gl_backend_rebindtextures;
325 static void GL_TextureMode_f (void)
328 gltextureimage_t *image;
329 gltexturepool_t *pool;
333 for (i = 0;i < 6;i++)
335 if (gl_filter_min == modes[i].minification)
337 Con_Printf ("%s\n", modes[i].name);
341 Con_Printf ("current filter is unknown???\n");
345 for (i = 0;i < 6;i++)
346 if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
350 Con_Printf ("bad filter name\n");
354 gl_filter_min = modes[i].minification;
355 gl_filter_mag = modes[i].magnification;
357 // change all the existing mipmap texture objects
358 // FIXME: force renderer(/client/something?) restart instead?
359 for (pool = gltexturepoolchain;pool;pool = pool->next)
361 for (image = pool->imagechain;image;image = image->imagechain)
363 // only update already uploaded images
364 if (!(image->flags & GLTEXF_UPLOAD))
366 qglBindTexture(GL_TEXTURE_2D, image->texnum);
367 if (image->flags & TEXF_MIPMAP)
368 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
370 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
371 qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
375 gl_backend_rebindtextures = true;
378 static int R_CalcTexelDataSize (gltexture_t *glt)
380 int width2, height2, depth2, size;
381 if (glt->flags & TEXF_FRAGMENT)
382 size = glt->width * glt->height * glt->depth;
385 if (r_max_size.integer > realmaxsize)
386 Cvar_SetValue("r_max_size", realmaxsize);
387 // calculate final size
388 for (width2 = 1;width2 < glt->width;width2 <<= 1);
389 for (height2 = 1;height2 < glt->height;height2 <<= 1);
390 for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
391 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
392 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
393 for (depth2 >>= r_picmip.integer;depth2 > r_max_size.integer;depth2 >>= 1);
394 if (width2 < 1) width2 = 1;
395 if (height2 < 1) height2 = 1;
396 if (depth2 < 1) depth2 = 1;
399 if (glt->flags & TEXF_MIPMAP)
401 while (width2 > 1 || height2 > 1 || depth2 > 1)
403 size += width2 * height2 * depth2;
411 size++; // count the last 1x1 mipmap
414 size = width2 * height2 * depth2;
416 size *= glt->textype->internalbytesperpixel * glt->image->sides;
421 void R_TextureStats_PrintTotal(void)
423 int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
425 gltexturepool_t *pool;
426 for (pool = gltexturepoolchain;pool;pool = pool->next)
428 for (glt = pool->gltchain;glt;glt = glt->chain)
430 glsize = R_CalcTexelDataSize(glt);
433 totalp += glt->inputdatasize;
434 if (!(glt->flags & GLTEXF_UPLOAD))
438 loadedp += glt->inputdatasize;
442 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);
445 static void R_TextureStats_f(void)
449 gltexturepool_t *pool;
450 Con_Printf("glsize input loaded mip alpha name\n");
451 for (pool = gltexturepoolchain;pool;pool = pool->next)
453 for (glt = pool->gltchain;glt;glt = glt->chain)
455 loaded = !(glt->flags & GLTEXF_UPLOAD);
456 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>");
458 Con_Printf("pool %10p\n", pool);
460 R_TextureStats_PrintTotal();
463 char engineversion[40];
465 static void r_textures_start(void)
467 // deal with size limits of various drivers (3dfx in particular)
468 qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
470 // LordHavoc: allow any alignment
471 qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
474 // use the largest scrap texture size we can (not sure if this is really a good idea)
475 for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
477 texturemempool = Mem_AllocPool("Texture Info");
478 texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
479 textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
481 // Disable JPEG screenshots if the DLL isn't loaded
482 if (! JPEG_OpenLibrary ())
483 Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
486 static void r_textures_shutdown(void)
488 rtexturepool_t *temp;
490 JPEG_CloseLibrary ();
492 while(gltexturepoolchain)
494 temp = (rtexturepool_t *) gltexturepoolchain;
495 R_FreeTexturePool(&temp);
498 resizebuffersize = 0;
499 texturebuffersize = 0;
501 colorconvertbuffer = NULL;
502 texturebuffer = NULL;
503 Mem_FreePool(&texturemempool);
504 Mem_FreePool(&texturedatamempool);
505 Mem_FreePool(&textureprocessingmempool);
508 static void r_textures_newmap(void)
512 void R_Textures_Init (void)
514 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
515 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
516 Cvar_RegisterVariable (&r_max_scrapsize);
517 Cvar_RegisterVariable (&r_max_size);
518 Cvar_RegisterVariable (&r_picmip);
519 Cvar_RegisterVariable (&r_lerpimages);
520 Cvar_RegisterVariable (&r_precachetextures);
522 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
525 void R_Textures_Frame (void)
527 // could do procedural texture animation here, if we keep track of which
528 // textures were accessed this frame...
530 // free the resize buffers
531 resizebuffersize = 0;
534 Mem_Free(resizebuffer);
537 if (colorconvertbuffer)
539 Mem_Free(colorconvertbuffer);
540 colorconvertbuffer = NULL;
544 void R_MakeResizeBufferBigger(int size)
546 if (resizebuffersize < size)
548 resizebuffersize = size;
550 Mem_Free(resizebuffer);
551 if (colorconvertbuffer)
552 Mem_Free(colorconvertbuffer);
553 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
554 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
555 if (!resizebuffer || !colorconvertbuffer)
556 Host_Error("R_Upload: out of memory\n");
560 static void GL_SetupTextureParameters(int flags, int texturetype)
562 int textureenum = gltexturetypeenums[texturetype];
563 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
567 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
568 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
569 if (gltexturetypedimensions[texturetype] >= 3)
570 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
572 if (flags & TEXF_FORCENEAREST)
574 if (flags & TEXF_MIPMAP)
575 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
577 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
578 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
580 else if (flags & TEXF_FORCELINEAR)
582 if (flags & TEXF_MIPMAP)
584 if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
585 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
587 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
590 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
591 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
595 if (flags & TEXF_MIPMAP)
596 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
598 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
599 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
605 static void R_Upload(gltexture_t *glt, qbyte *data)
607 int i, mip, width, height, depth, internalformat;
613 glt->texnum = glt->image->texnum;
614 qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
616 glt->flags &= ~GLTEXF_UPLOAD;
617 gl_backend_rebindtextures = true;
619 if (glt->flags & TEXF_FRAGMENT)
621 if (glt->image->flags & GLTEXF_UPLOAD)
623 glt->image->flags &= ~GLTEXF_UPLOAD;
624 Con_DPrintf("uploaded new fragments image\n");
625 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
626 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
627 switch(glt->image->texturetype)
629 case GLTEXTURETYPE_1D:
630 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
633 case GLTEXTURETYPE_2D:
634 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
637 case GLTEXTURETYPE_3D:
638 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);
642 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
645 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
648 if (prevbuffer == NULL)
650 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
651 memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
652 prevbuffer = resizebuffer;
654 else if (glt->textype->textype == TEXTYPE_PALETTE)
656 // promote paletted to RGBA, so we only have to worry about RGB and
657 // RGBA in the rest of this code
658 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
659 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
660 prevbuffer = colorconvertbuffer;
663 switch(glt->image->texturetype)
665 case GLTEXTURETYPE_1D:
666 qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
669 case GLTEXTURETYPE_2D:
670 qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
673 case GLTEXTURETYPE_3D:
674 qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
678 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
681 glt->texnum = glt->image->texnum;
685 glt->image->flags &= ~GLTEXF_UPLOAD;
687 // these are rounded up versions of the size to do better resampling
688 for (width = 1;width < glt->width ;width <<= 1);
689 for (height = 1;height < glt->height;height <<= 1);
690 for (depth = 1;depth < glt->depth ;depth <<= 1);
692 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
694 if (prevbuffer == NULL)
696 width = glt->image->width;
697 height = glt->image->height;
698 depth = glt->image->depth;
699 memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
700 prevbuffer = resizebuffer;
704 if (glt->textype->textype == TEXTYPE_PALETTE)
706 // promote paletted to RGBA, so we only have to worry about RGB and
707 // RGBA in the rest of this code
708 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
709 prevbuffer = colorconvertbuffer;
713 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
715 if (glt->flags & TEXF_ALPHA)
718 // cubemaps contain multiple images and thus get processed a bit differently
719 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
721 if (glt->width != width || glt->height != height || glt->depth != depth)
723 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
724 prevbuffer = resizebuffer;
727 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
729 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
730 prevbuffer = resizebuffer;
734 switch(glt->image->texturetype)
736 case GLTEXTURETYPE_1D:
737 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
739 if (glt->flags & TEXF_MIPMAP)
741 while (width > 1 || height > 1 || depth > 1)
743 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
744 prevbuffer = resizebuffer;
745 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
750 case GLTEXTURETYPE_2D:
751 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
753 if (glt->flags & TEXF_MIPMAP)
755 while (width > 1 || height > 1 || depth > 1)
757 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
758 prevbuffer = resizebuffer;
759 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
764 case GLTEXTURETYPE_3D:
765 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
767 if (glt->flags & TEXF_MIPMAP)
769 while (width > 1 || height > 1 || depth > 1)
771 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
772 prevbuffer = resizebuffer;
773 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
778 case GLTEXTURETYPE_CUBEMAP:
779 // convert and upload each side in turn,
780 // from a continuous block of input texels
781 texturebuffer = prevbuffer;
782 for (i = 0;i < 6;i++)
784 prevbuffer = texturebuffer;
785 texturebuffer += width * height * depth * glt->textype->inputbytesperpixel;
786 if (glt->width != width || glt->height != height || glt->depth != depth)
788 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
789 prevbuffer = resizebuffer;
792 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
794 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
795 prevbuffer = resizebuffer;
798 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
800 if (glt->flags & TEXF_MIPMAP)
802 while (width > 1 || height > 1 || depth > 1)
804 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
805 prevbuffer = resizebuffer;
806 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
813 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
816 static void R_FindImageForTexture(gltexture_t *glt)
818 int i, j, best, best2, x, y, z, w, h, d;
819 textypeinfo_t *texinfo;
820 gltexturepool_t *pool;
821 gltextureimage_t *image, **imagechainpointer;
822 texinfo = glt->textype;
825 // remains -1 until uploaded
834 if (glt->flags & TEXF_FRAGMENT)
836 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
838 image = *imagechainpointer;
839 if (image->type != GLIMAGETYPE_FRAGMENTS)
841 if (image->texturetype != glt->texturetype)
843 if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
845 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
847 if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
850 // got a fragments texture, find a place in it if we can
851 for (best = image->width, i = 0;i < image->width - w;i++)
853 for (best2 = 0, j = 0;j < w;j++)
855 if (image->blockallocation[i+j] >= best)
857 if (best2 < image->blockallocation[i+j])
858 best2 = image->blockallocation[i+j];
862 // this is a valid spot
868 if (best + h > image->height)
871 for (i = 0;i < w;i++)
872 image->blockallocation[x + i] = best + h;
878 image->texturecount++;
882 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
884 Sys_Error("R_FindImageForTexture: ran out of memory\n");
885 image->type = GLIMAGETYPE_FRAGMENTS;
886 // make sure the created image is big enough for the fragment
887 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
889 if (gltexturetypedimensions[glt->texturetype] >= 2)
890 for (image->height = block_size;image->height < glt->height;image->height <<= 1);
892 if (gltexturetypedimensions[glt->texturetype] >= 3)
893 for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
894 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
895 memset(image->blockallocation, 0, image->width * sizeof(short));
900 for (i = 0;i < w;i++)
901 image->blockallocation[x + i] = y + h;
905 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
907 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
909 Sys_Error("R_FindImageForTexture: ran out of memory\n");
910 image->type = GLIMAGETYPE_TILE;
911 image->blockallocation = NULL;
913 // calculate final size
914 if (r_max_size.integer > realmaxsize)
915 Cvar_SetValue("r_max_size", realmaxsize);
916 for (image->width = 1;image->width < glt->width;image->width <<= 1);
917 for (image->height = 1;image->height < glt->height;image->height <<= 1);
918 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
919 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
920 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
921 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
922 if (image->width < 1) image->width = 1;
923 if (image->height < 1) image->height = 1;
924 if (image->depth < 1) image->depth = 1;
926 image->texturetype = glt->texturetype;
927 image->glinternalformat = texinfo->glinternalformat;
928 image->glformat = texinfo->glformat;
929 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
930 image->bytesperpixel = texinfo->internalbytesperpixel;
931 image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
932 // get a texture number to use
933 qglGenTextures(1, &image->texnum);
934 *imagechainpointer = image;
935 image->texturecount++;
943 // note: R_FindImageForTexture must be called before this
944 static void R_UploadTexture (gltexture_t *glt)
946 if (!(glt->flags & GLTEXF_UPLOAD))
949 R_Upload(glt, glt->inputtexels);
950 if (glt->inputtexels)
952 Mem_Free(glt->inputtexels);
953 glt->inputtexels = NULL;
954 glt->flags |= GLTEXF_DESTROYED;
956 else if (glt->flags & GLTEXF_DESTROYED)
957 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
960 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)
964 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
965 textypeinfo_t *texinfo;
967 if (cls.state == ca_dedicated)
970 if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
971 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
972 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
973 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
974 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
975 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
978 glt = R_FindTexture (pool, identifier);
981 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
982 R_FreeTexture((rtexture_t *)glt);
986 texinfo = R_GetTexTypeInfo(textype, flags);
987 size = width * height * depth * sides * texinfo->inputbytesperpixel;
989 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
991 // clear the alpha flag if the texture has no transparent pixels
994 case TEXTYPE_PALETTE:
995 if (flags & TEXF_ALPHA)
997 flags &= ~TEXF_ALPHA;
1000 for (i = 0;i < size;i++)
1002 if (((qbyte *)&palette[data[i]])[3] < 255)
1004 flags |= TEXF_ALPHA;
1012 if (flags & TEXF_ALPHA)
1013 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1016 if (flags & TEXF_ALPHA)
1018 flags &= ~TEXF_ALPHA;
1021 for (i = 3;i < size;i += 4)
1025 flags |= TEXF_ALPHA;
1033 Host_Error("R_LoadTexture: unknown texture type\n");
1036 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1039 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1040 strcpy (glt->identifier, identifier);
1043 glt->identifier = NULL;
1045 glt->chain = pool->gltchain;
1046 pool->gltchain = glt;
1048 glt->height = height;
1050 glt->flags = flags | GLTEXF_UPLOAD;
1051 glt->textype = texinfo;
1052 glt->texturetype = texturetype;
1053 glt->inputdatasize = size;
1054 glt->palette = palette;
1058 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1059 if (glt->inputtexels == NULL)
1060 Sys_Error("R_LoadTexture: out of memory\n");
1061 memcpy(glt->inputtexels, data, size);
1064 glt->inputtexels = NULL;
1066 R_FindImageForTexture(glt);
1067 R_PrecacheTexture(glt);
1069 return (rtexture_t *)glt;
1072 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1074 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1077 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)
1079 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1082 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)
1084 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1087 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1089 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1092 int R_TextureHasAlpha(rtexture_t *rt)
1094 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1097 int R_TextureWidth(rtexture_t *rt)
1099 return rt ? ((gltexture_t *)rt)->width : 0;
1102 int R_TextureHeight(rtexture_t *rt)
1104 return rt ? ((gltexture_t *)rt)->height : 0;
1107 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1110 float iwidth, iheight, idepth;
1111 if (cls.state == ca_dedicated)
1119 if (fx1 || fy1 || fx2 || fy2)
1137 Host_Error("R_FragmentLocation: no texture supplied\n");
1138 glt = (gltexture_t *)rt;
1139 if (glt->flags & TEXF_FRAGMENT)
1145 if (fx1 || fy1 || fx2 || fy2)
1147 iwidth = 1.0f / glt->image->width;
1148 iheight = 1.0f / glt->image->height;
1149 idepth = 1.0f / glt->image->depth;
1151 *fx1 = glt->x * iwidth;
1153 *fy1 = glt->y * iheight;
1155 *fz1 = glt->z * idepth;
1157 *fx2 = (glt->x + glt->width) * iwidth;
1159 *fy2 = (glt->y + glt->height) * iheight;
1161 *fz2 = (glt->z + glt->depth) * idepth;
1172 if (fx1 || fy1 || fx2 || fy2)
1190 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1192 R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1195 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1200 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1204 Host_Error("R_UpdateTexture: no texture supplied\n");
1206 Host_Error("R_UpdateTexture: no data supplied\n");
1207 glt = (gltexture_t *)rt;
1209 // if it has not been uploaded yet, update the data that will be used when it is
1210 if (glt->inputtexels)
1211 memcpy(glt->inputtexels, data, glt->inputdatasize);
1213 R_Upload(glt, data);