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 (!Q_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");
484 static void r_textures_shutdown(void)
486 rtexturepool_t *temp;
488 JPEG_CloseLibrary ();
490 while(gltexturepoolchain)
492 temp = (rtexturepool_t *) gltexturepoolchain;
493 R_FreeTexturePool(&temp);
496 resizebuffersize = 0;
497 texturebuffersize = 0;
499 colorconvertbuffer = NULL;
500 texturebuffer = NULL;
501 Mem_FreePool(&texturemempool);
502 Mem_FreePool(&texturedatamempool);
503 Mem_FreePool(&textureprocessingmempool);
506 static void r_textures_newmap(void)
510 void R_Textures_Init (void)
512 Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
513 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
514 Cvar_RegisterVariable (&r_max_scrapsize);
515 Cvar_RegisterVariable (&r_max_size);
516 Cvar_RegisterVariable (&r_picmip);
517 Cvar_RegisterVariable (&r_lerpimages);
518 Cvar_RegisterVariable (&r_precachetextures);
520 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
523 void R_Textures_Frame (void)
525 // could do procedural texture animation here, if we keep track of which
526 // textures were accessed this frame...
528 // free the resize buffers
529 resizebuffersize = 0;
532 Mem_Free(resizebuffer);
535 if (colorconvertbuffer)
537 Mem_Free(colorconvertbuffer);
538 colorconvertbuffer = NULL;
542 void R_MakeResizeBufferBigger(int size)
544 if (resizebuffersize < size)
546 resizebuffersize = size;
548 Mem_Free(resizebuffer);
549 if (colorconvertbuffer)
550 Mem_Free(colorconvertbuffer);
551 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
552 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
553 if (!resizebuffer || !colorconvertbuffer)
554 Host_Error("R_Upload: out of memory\n");
558 static void GL_SetupTextureParameters(int flags, int texturetype)
560 int textureenum = gltexturetypeenums[texturetype];
561 int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
565 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);
566 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);
567 if (gltexturetypedimensions[texturetype] >= 3)
568 qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);
570 if (flags & TEXF_MIPMAP)
571 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);
573 qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
574 qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
579 static void R_Upload(gltexture_t *glt, qbyte *data)
581 int i, mip, width, height, depth, internalformat;
587 glt->texnum = glt->image->texnum;
588 qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
590 glt->flags &= ~GLTEXF_UPLOAD;
591 gl_backend_rebindtextures = true;
593 if (glt->flags & TEXF_FRAGMENT)
595 if (glt->image->flags & GLTEXF_UPLOAD)
597 glt->image->flags &= ~GLTEXF_UPLOAD;
598 Con_DPrintf("uploaded new fragments image\n");
599 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
600 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
601 switch(glt->image->texturetype)
603 case GLTEXTURETYPE_1D:
604 qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
607 case GLTEXTURETYPE_2D:
608 qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
611 case GLTEXTURETYPE_3D:
612 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);
616 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
619 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
622 if (prevbuffer == NULL)
624 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
625 memset(resizebuffer, 255, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
626 prevbuffer = resizebuffer;
628 else if (glt->textype->textype == TEXTYPE_PALETTE)
630 // promote paletted to RGBA, so we only have to worry about RGB and
631 // RGBA in the rest of this code
632 R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
633 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
634 prevbuffer = colorconvertbuffer;
637 switch(glt->image->texturetype)
639 case GLTEXTURETYPE_1D:
640 qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
643 case GLTEXTURETYPE_2D:
644 qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
647 case GLTEXTURETYPE_3D:
648 qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
652 Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
655 glt->texnum = glt->image->texnum;
659 glt->image->flags &= ~GLTEXF_UPLOAD;
661 // these are rounded up versions of the size to do better resampling
662 for (width = 1;width < glt->width ;width <<= 1);
663 for (height = 1;height < glt->height;height <<= 1);
664 for (depth = 1;depth < glt->depth ;depth <<= 1);
666 R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
668 if (prevbuffer == NULL)
670 width = glt->image->width;
671 height = glt->image->height;
672 depth = glt->image->depth;
673 memset(resizebuffer, 255, width * height * depth * glt->image->bytesperpixel);
674 prevbuffer = resizebuffer;
678 if (glt->textype->textype == TEXTYPE_PALETTE)
680 // promote paletted to RGBA, so we only have to worry about RGB and
681 // RGBA in the rest of this code
682 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
683 prevbuffer = colorconvertbuffer;
687 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
689 if (glt->flags & TEXF_ALPHA)
692 // cubemaps contain multiple images and thus get processed a bit differently
693 if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
695 if (glt->width != width || glt->height != height || glt->depth != depth)
697 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
698 prevbuffer = resizebuffer;
701 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
703 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
704 prevbuffer = resizebuffer;
708 switch(glt->image->texturetype)
710 case GLTEXTURETYPE_1D:
711 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
713 if (glt->flags & TEXF_MIPMAP)
715 while (width > 1 || height > 1 || depth > 1)
717 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
718 prevbuffer = resizebuffer;
719 qglTexImage1D(GL_TEXTURE_1D, mip++, internalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
724 case GLTEXTURETYPE_2D:
725 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
727 if (glt->flags & TEXF_MIPMAP)
729 while (width > 1 || height > 1 || depth > 1)
731 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
732 prevbuffer = resizebuffer;
733 qglTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
738 case GLTEXTURETYPE_3D:
739 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
741 if (glt->flags & TEXF_MIPMAP)
743 while (width > 1 || height > 1 || depth > 1)
745 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
746 prevbuffer = resizebuffer;
747 qglTexImage3D(GL_TEXTURE_3D, mip++, internalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
752 case GLTEXTURETYPE_CUBEMAP:
753 // convert and upload each side in turn,
754 // from a continuous block of input texels
755 texturebuffer = prevbuffer;
756 for (i = 0;i < 6;i++)
758 prevbuffer = texturebuffer;
759 texturebuffer += width * height * depth * glt->textype->inputbytesperpixel;
760 if (glt->width != width || glt->height != height || glt->depth != depth)
762 Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
763 prevbuffer = resizebuffer;
766 while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
768 Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
769 prevbuffer = resizebuffer;
772 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
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->image->bytesperpixel);
779 prevbuffer = resizebuffer;
780 qglTexImage2D(cubemapside[i], mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
787 GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
790 static void R_FindImageForTexture(gltexture_t *glt)
792 int i, j, best, best2, x, y, z, w, h, d;
793 textypeinfo_t *texinfo;
794 gltexturepool_t *pool;
795 gltextureimage_t *image, **imagechainpointer;
796 texinfo = glt->textype;
799 // remains -1 until uploaded
808 if (glt->flags & TEXF_FRAGMENT)
810 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
812 image = *imagechainpointer;
813 if (image->type != GLIMAGETYPE_FRAGMENTS)
815 if (image->texturetype != glt->texturetype)
817 if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
819 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
821 if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
824 // got a fragments texture, find a place in it if we can
825 for (best = image->width, i = 0;i < image->width - w;i++)
827 for (best2 = 0, j = 0;j < w;j++)
829 if (image->blockallocation[i+j] >= best)
831 if (best2 < image->blockallocation[i+j])
832 best2 = image->blockallocation[i+j];
836 // this is a valid spot
842 if (best + h > image->height)
845 for (i = 0;i < w;i++)
846 image->blockallocation[x + i] = best + h;
852 image->texturecount++;
856 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
858 Sys_Error("R_FindImageForTexture: ran out of memory\n");
859 image->type = GLIMAGETYPE_FRAGMENTS;
860 // make sure the created image is big enough for the fragment
861 for (image->width = block_size;image->width < glt->width;image->width <<= 1);
863 if (gltexturetypedimensions[glt->texturetype] >= 2)
864 for (image->height = block_size;image->height < glt->height;image->height <<= 1);
866 if (gltexturetypedimensions[glt->texturetype] >= 3)
867 for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
868 image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
869 memset(image->blockallocation, 0, image->width * sizeof(short));
874 for (i = 0;i < w;i++)
875 image->blockallocation[x + i] = y + h;
879 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
881 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
883 Sys_Error("R_FindImageForTexture: ran out of memory\n");
884 image->type = GLIMAGETYPE_TILE;
885 image->blockallocation = NULL;
887 // calculate final size
888 if (r_max_size.integer > realmaxsize)
889 Cvar_SetValue("r_max_size", realmaxsize);
890 for (image->width = 1;image->width < glt->width;image->width <<= 1);
891 for (image->height = 1;image->height < glt->height;image->height <<= 1);
892 for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
893 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
894 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
895 for (image->depth >>= r_picmip.integer;image->depth > r_max_size.integer;image->depth >>= 1);
896 if (image->width < 1) image->width = 1;
897 if (image->height < 1) image->height = 1;
898 if (image->depth < 1) image->depth = 1;
900 image->texturetype = glt->texturetype;
901 image->glinternalformat = texinfo->glinternalformat;
902 image->glformat = texinfo->glformat;
903 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP)) | GLTEXF_UPLOAD;
904 image->bytesperpixel = texinfo->internalbytesperpixel;
905 image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
906 // get a texture number to use
907 qglGenTextures(1, &image->texnum);
908 *imagechainpointer = image;
909 image->texturecount++;
917 // note: R_FindImageForTexture must be called before this
918 static void R_UploadTexture (gltexture_t *glt)
920 if (!(glt->flags & GLTEXF_UPLOAD))
923 R_Upload(glt, glt->inputtexels);
924 if (glt->inputtexels)
926 Mem_Free(glt->inputtexels);
927 glt->inputtexels = NULL;
928 glt->flags |= GLTEXF_DESTROYED;
930 else if (glt->flags & GLTEXF_DESTROYED)
931 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
934 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)
938 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
939 textypeinfo_t *texinfo;
941 if (cls.state == ca_dedicated)
944 if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
945 Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
946 if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
947 Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
948 if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
949 Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
952 glt = R_FindTexture (pool, identifier);
955 Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
956 R_FreeTexture((rtexture_t *)glt);
960 texinfo = R_GetTexTypeInfo(textype, flags);
961 size = width * height * depth * sides * texinfo->inputbytesperpixel;
963 Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
965 // clear the alpha flag if the texture has no transparent pixels
968 case TEXTYPE_PALETTE:
969 if (flags & TEXF_ALPHA)
971 flags &= ~TEXF_ALPHA;
974 for (i = 0;i < size;i++)
976 if (((qbyte *)&palette[data[i]])[3] == 255)
986 if (flags & TEXF_ALPHA)
987 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
990 if (flags & TEXF_ALPHA)
992 flags &= ~TEXF_ALPHA;
995 for (i = 3;i < size;i += 4)
1007 Host_Error("R_LoadTexture: unknown texture type\n");
1010 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1013 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1014 strcpy (glt->identifier, identifier);
1017 glt->identifier = NULL;
1019 glt->chain = pool->gltchain;
1020 pool->gltchain = glt;
1022 glt->height = height;
1024 glt->flags = flags | GLTEXF_UPLOAD;
1025 glt->textype = texinfo;
1026 glt->texturetype = texturetype;
1027 glt->inputdatasize = size;
1028 glt->palette = palette;
1032 glt->inputtexels = Mem_Alloc(texturedatamempool, size);
1033 if (glt->inputtexels == NULL)
1034 Sys_Error("R_LoadTexture: out of memory\n");
1035 memcpy(glt->inputtexels, data, size);
1038 glt->inputtexels = NULL;
1040 R_FindImageForTexture(glt);
1041 R_PrecacheTexture(glt);
1043 return (rtexture_t *)glt;
1046 rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1048 return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
1051 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)
1053 return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
1056 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)
1058 return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
1061 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
1063 return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
1066 int R_TextureHasAlpha(rtexture_t *rt)
1068 return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
1071 int R_TextureWidth(rtexture_t *rt)
1073 return rt ? ((gltexture_t *)rt)->width : 0;
1076 int R_TextureHeight(rtexture_t *rt)
1078 return rt ? ((gltexture_t *)rt)->height : 0;
1081 void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
1084 float iwidth, iheight, idepth;
1085 if (cls.state == ca_dedicated)
1093 if (fx1 || fy1 || fx2 || fy2)
1111 Host_Error("R_FragmentLocation: no texture supplied\n");
1112 glt = (gltexture_t *)rt;
1113 if (glt->flags & TEXF_FRAGMENT)
1119 if (fx1 || fy1 || fx2 || fy2)
1121 iwidth = 1.0f / glt->image->width;
1122 iheight = 1.0f / glt->image->height;
1123 idepth = 1.0f / glt->image->depth;
1125 *fx1 = glt->x * iwidth;
1127 *fy1 = glt->y * iheight;
1129 *fz1 = glt->z * idepth;
1131 *fx2 = (glt->x + glt->width) * iwidth;
1133 *fy2 = (glt->y + glt->height) * iheight;
1135 *fz2 = (glt->z + glt->depth) * idepth;
1146 if (fx1 || fy1 || fx2 || fy2)
1164 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1166 R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
1169 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1174 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1178 Host_Error("R_UpdateTexture: no texture supplied\n");
1180 Host_Error("R_UpdateTexture: no data supplied\n");
1181 glt = (gltexture_t *)rt;
1183 // if it has not been uploaded yet, update the data that will be used when it is
1184 if (glt->inputtexels)
1185 memcpy(glt->inputtexels, data, glt->inputdatasize);
1187 R_Upload(glt, data);