3 cvar_t r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
4 cvar_t r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
5 cvar_t r_picmip = {CVAR_SAVE, "r_picmip", "0"};
6 cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
7 cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
9 int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; //NEAREST;
10 int gl_filter_mag = GL_LINEAR;
13 static mempool_t *texturemempool;
14 static mempool_t *texturedatamempool;
15 static mempool_t *textureprocessingmempool;
17 // note: this must not conflict with TEXF_ flags in r_textures.h
18 // cleared when a texture is uploaded
19 #define GLTEXF_UPLOAD 0x00010000
20 // texture generated by code, also causes permanent GLTEXF_UPLOAD effect
21 #define GLTEXF_PROCEDURAL 0x00020000
22 // bitmask for mismatch checking
23 #define GLTEXF_IMPORTANTBITS (GLTEXF_PROCEDURAL)
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 //#define BLOCK_SIZE 256
29 static int block_size;
31 // really this number only governs gltexnuminuse
32 #define MAX_GLTEXTURES 65536
34 // since there is only one set of GL texture numbers, we have to track them
35 // globally, everything else is per texture pool
36 static byte *gltexnuminuse;
41 int inputbytesperpixel;
42 int internalbytesperpixel;
49 static textypeinfo_t textype_qpalette = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 3, 1};
50 static textypeinfo_t textype_rgb = {TEXTYPE_RGB , 3, 3, GL_RGB , 3, 3};
51 static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 3, 1};
52 static textypeinfo_t textype_qpalette_alpha = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 4, 1};
53 static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, GL_RGBA, 4, 1};
55 // a tiling texture (most common type)
56 #define GLIMAGETYPE_TILE 0
57 // a fragments texture (contains one or more fragment textures)
58 #define GLIMAGETYPE_FRAGMENTS 1
60 // a gltextureimage can have one (or more if fragments) gltextures inside
61 typedef struct gltextureimage_s
63 struct gltextureimage_s *imagechain;
65 int type; // one of the GLIMAGETYPE_ values
66 int texnum; // GL texture slot number
68 int bytesperpixel; // bytes per pixel
69 int glformat; // GL_RGB or GL_RGBA
70 int glinternalformat; // 3 or 4
72 short *blockallocation; // fragment allocation
76 typedef struct gltexture_s
78 // pointer to texturepool (check this to see if the texture is allocated)
79 struct gltexturepool_s *pool;
80 // pointer to next texture in texturepool chain
81 struct gltexture_s *chain;
82 // pointer into gltextureimage array
83 gltextureimage_t *image;
84 // name of the texture (this might be removed someday), no duplicates
86 // location in the image, and size
87 int x, y, width, height;
88 // copy of the original texture supplied to the upload function, for re-uploading or deferred uploads (non-precached)
90 // to identify cache mismatchs (this might be removed someday)
92 // flags supplied to the LoadTexture/ProceduralTexture functions
93 // (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
95 // procedural texture generation function, called once per frame if the texture is used
96 int (*generate)(byte *buffer, int width, int height, void *parameterdata, int parameterdatasize);
97 // data provided to generate, persistent from call to call
100 int proceduraldatasize;
101 // used only to avoid updating the texture more than once per frame
102 int proceduralframecount;
103 // pointer to one of the textype_ structs
104 textypeinfo_t *textype;
108 #define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
110 typedef struct gltexturepool_s
113 struct gltextureimage_s *imagechain;
114 struct gltexture_s *gltchain;
115 struct gltexturepool_s *next;
119 static gltexturepool_t *gltexturepoolchain = NULL;
121 static byte *resamplerow1 = NULL, *resamplerow2 = NULL;
122 static int resamplerowsize = 0;
123 static byte *resizebuffer = NULL, *colorconvertbuffer;
124 static int resizebuffersize = 0;
125 static byte *texturebuffer;
126 static int texturebuffersize = 0;
128 static int realmaxsize = 0;
130 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
132 if (flags & TEXF_ALPHA)
136 case TEXTYPE_QPALETTE:
137 return &textype_qpalette_alpha;
139 Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
142 return &textype_rgba_alpha;
144 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
152 case TEXTYPE_QPALETTE:
153 return &textype_qpalette;
157 return &textype_rgba;
159 Host_Error("R_GetTexTypeInfo: unknown texture format\n");
165 static void R_UploadTexture(gltexture_t *t);
167 static void R_PrecacheTexture(gltexture_t *glt)
171 if (glt->flags & TEXF_ALWAYSPRECACHE)
173 else if (r_precachetextures.integer >= 2)
175 else if (r_precachetextures.integer >= 1)
176 if (glt->flags & TEXF_PRECACHE)
180 R_UploadTexture(glt);
183 int R_GetTexture(rtexture_t *rt)
188 glt = (gltexture_t *)rt;
189 if (glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL))
191 if (glt->flags & GLTEXF_PROCEDURAL)
193 if (glt->proceduralframecount != r_framecount)
195 glt->proceduralframecount = r_framecount;
196 R_UploadTexture(glt);
200 R_UploadTexture(glt);
202 return glt->image->texnum;
205 static void R_FreeTexture(gltexture_t *glt)
207 gltexture_t **gltpointer;
208 gltextureimage_t *image, **gltimagepointer;
211 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
212 if (*gltpointer == glt)
213 *gltpointer = glt->chain;
215 Host_Error("R_FreeTexture: texture not linked in pool\n");
217 // note: if freeing a fragment texture, this will not make the claimed
218 // space available for new textures unless all other fragments in the
219 // image are also freed
221 image->texturecount--;
222 if (image->texturecount < 1)
224 for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
225 if (*gltimagepointer == image)
226 *gltimagepointer = image->imagechain;
228 Host_Error("R_FreeTexture: image not linked in pool\n");
231 texnum = image->texnum;
232 gltexnuminuse[image->texnum] = 0;
233 glDeleteTextures(1, &texnum);
235 if (image->blockallocation)
236 Mem_Free(image->blockallocation);
241 Mem_Free(glt->identifier);
242 if (glt->inputtexels)
243 Mem_Free(glt->inputtexels);
244 if (glt->proceduraldata)
245 Mem_Free(glt->proceduraldata);
249 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
256 for (glt = pool->gltchain;glt;glt = glt->chain)
257 if (glt->identifier && !strcmp (identifier, glt->identifier))
263 rtexturepool_t *R_AllocTexturePool(void)
265 gltexturepool_t *pool;
266 if (texturemempool == NULL)
268 pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
271 //memset(pool, 0, sizeof(gltexturepool_t));
272 pool->next = gltexturepoolchain;
273 gltexturepoolchain = pool;
274 pool->sentinel = TEXTUREPOOL_SENTINEL;
275 return (rtexturepool_t *)pool;
278 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
280 gltexturepool_t *pool, **poolpointer;
281 if (rtexturepool == NULL)
283 if (*rtexturepool == NULL)
285 pool = (gltexturepool_t *)(*rtexturepool);
286 *rtexturepool = NULL;
287 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
288 Host_Error("R_FreeTexturePool: pool already freed\n");
289 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
290 if (*poolpointer == pool)
291 *poolpointer = pool->next;
293 Host_Error("R_FreeTexturePool: pool not linked\n");
294 while (pool->gltchain)
295 R_FreeTexture(pool->gltchain);
296 if (pool->imagechain)
297 Sys_Error("R_FreeTexturePool: not all images freed\n");
305 int minification, magnification;
309 static glmode_t modes[] =
311 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
312 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
313 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
314 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
315 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
316 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
319 static void GL_TextureMode_f (void)
322 gltextureimage_t *image;
323 gltexturepool_t *pool;
327 for (i = 0;i < 6;i++)
329 if (gl_filter_min == modes[i].minification)
331 Con_Printf ("%s\n", modes[i].name);
335 Con_Printf ("current filter is unknown???\n");
339 for (i = 0;i < 6;i++)
340 if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
344 Con_Printf ("bad filter name\n");
348 gl_filter_min = modes[i].minification;
349 gl_filter_mag = modes[i].magnification;
351 // change all the existing mipmap texture objects
352 // FIXME: force renderer(/client/something?) restart instead?
353 for (pool = gltexturepoolchain;pool;pool = pool->next)
355 for (image = pool->imagechain;image;image = image->imagechain)
357 // only update already uploaded images
358 if (!(image->flags & GLTEXF_UPLOAD))
360 glBindTexture(GL_TEXTURE_2D, image->texnum);
361 if (image->flags & TEXF_MIPMAP)
362 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
364 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
365 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
371 static int R_CalcTexelDataSize (gltexture_t *glt)
373 int width2, height2, size;
374 if (glt->flags & TEXF_FRAGMENT)
375 size = glt->width * glt->height;
378 if (r_max_size.integer > realmaxsize)
379 Cvar_SetValue("r_max_size", realmaxsize);
380 // calculate final size
381 for (width2 = 1;width2 < glt->width;width2 <<= 1);
382 for (height2 = 1;height2 < glt->height;height2 <<= 1);
383 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
384 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
385 if (width2 < 1) width2 = 1;
386 if (height2 < 1) height2 = 1;
389 if (glt->flags & TEXF_MIPMAP)
391 while (width2 > 1 || height2 > 1)
393 size += width2 * height2;
399 size++; // count the last 1x1 mipmap
402 size = width2*height2;
404 size *= glt->textype->internalbytesperpixel;
409 void R_TextureStats_PrintTotal(void)
411 int glsize, inputsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
413 gltexturepool_t *pool;
414 for (pool = gltexturepoolchain;pool;pool = pool->next)
416 for (glt = pool->gltchain;glt;glt = glt->chain)
418 glsize = R_CalcTexelDataSize(glt);
419 inputsize = glt->width * glt->height * glt->textype->inputbytesperpixel;
424 if (!(glt->flags & GLTEXF_UPLOAD))
428 loadedp += inputsize;
432 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);
435 static void R_TextureStats_f(void)
439 gltexturepool_t *pool;
440 Con_Printf("glsize input crc loaded mip alpha name\n");
441 for (pool = gltexturepoolchain;pool;pool = pool->next)
443 for (glt = pool->gltchain;glt;glt = glt->chain)
445 loaded = !(glt->flags & GLTEXF_UPLOAD);
446 if (glt->flags & GLTEXF_PROCEDURAL)
447 Con_Printf("%c%4i%c %4i PROC %s %s %s %s\n" , loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', (glt->width * glt->height * glt->textype->inputbytesperpixel + 1023) / 1024, loaded ? "loaded" : " ", (glt->flags & TEXF_MIPMAP) ? "mip" : " ", (glt->flags & TEXF_ALPHA) ? "alpha" : " ", glt->identifier ? glt->identifier : "<unnamed>");
449 Con_Printf("%c%4i%c%c%4i%c %04X %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->width * glt->height * glt->textype->inputbytesperpixel + 1023) / 1024, glt->inputtexels ? ']' : ' ', glt->crc, loaded ? "loaded" : " ", (glt->flags & TEXF_MIPMAP) ? "mip" : " ", (glt->flags & TEXF_ALPHA) ? "alpha" : " ", glt->identifier ? glt->identifier : "<unnamed>");
451 Con_Printf("pool %10p\n", pool);
453 R_TextureStats_PrintTotal();
456 char engineversion[40];
458 static void r_textures_start(void)
460 // deal with size limits of various drivers (3dfx in particular)
461 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
464 // use the largest scrap texture size we can (not sure if this is really a good idea)
465 for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
467 texturemempool = Mem_AllocPool("Texture Info");
468 texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
469 textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
470 gltexnuminuse = Mem_Alloc(texturemempool, MAX_GLTEXTURES);
471 //memset(gltexnuminuse, 0, MAX_GLTEXTURES);
474 static void r_textures_shutdown(void)
476 rtexturepool_t *temp;
477 while(gltexturepoolchain)
479 temp = (rtexturepool_t *) gltexturepoolchain;
480 R_FreeTexturePool(&temp);
484 if (resizebuffer) Mem_Free(resizebuffer);resizebuffer = NULL;
485 if (colorconvertbuffer) Mem_Free(colorconvertbuffer);colorconvertbuffer = NULL;
486 if (resamplerow1) Mem_Free(resamplerow1);resamplerow1 = NULL;
487 if (resamplerow2) Mem_Free(resamplerow2);resamplerow2 = NULL;
488 if (texturebuffer) Mem_Free(texturebuffer);texturebuffer = NULL;
489 if (gltexnuminuse) Mem_Free(gltexnuminuse);gltexnuminuse = NULL;
491 resizebuffersize = 0;
493 texturebuffersize = 0;
495 colorconvertbuffer = NULL;
498 texturebuffer = NULL;
499 gltexnuminuse = NULL;
500 Mem_FreePool(&texturemempool);
501 Mem_FreePool(&texturedatamempool);
502 Mem_FreePool(&textureprocessingmempool);
505 static void r_textures_newmap(void)
509 void R_Textures_Init (void)
511 Cmd_AddCommand ("gl_texturemode", &GL_TextureMode_f);
512 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
513 Cvar_RegisterVariable (&r_max_scrapsize);
514 Cvar_RegisterVariable (&r_max_size);
515 Cvar_RegisterVariable (&r_picmip);
516 Cvar_RegisterVariable (&r_lerpimages);
517 Cvar_RegisterVariable (&r_precachetextures);
518 gltexnuminuse = NULL;
520 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
523 static void R_ResampleTextureLerpLine (byte *in, byte *out, int inwidth, int outwidth, int bytesperpixel)
525 int j, xi, oldx = 0, f, fstep, endx, lerp;
526 fstep = (int) (inwidth*65536.0f/outwidth);
528 if (bytesperpixel == 4)
530 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
535 in += (xi - oldx) * 4;
541 *out++ = (byte) ((((in[4] - in[0]) * lerp) >> 16) + in[0]);
542 *out++ = (byte) ((((in[5] - in[1]) * lerp) >> 16) + in[1]);
543 *out++ = (byte) ((((in[6] - in[2]) * lerp) >> 16) + in[2]);
544 *out++ = (byte) ((((in[7] - in[3]) * lerp) >> 16) + in[3]);
546 else // last pixel of the line has no pixel to lerp to
555 else if (bytesperpixel == 3)
557 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
562 in += (xi - oldx) * 3;
568 *out++ = (byte) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
569 *out++ = (byte) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
570 *out++ = (byte) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
572 else // last pixel of the line has no pixel to lerp to
581 Sys_Error("R_ResampleTextureLerpLine: unsupported bytesperpixel %i\n", bytesperpixel);
589 static void R_ResampleTexture (void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight, int bytesperpixel)
591 if (resamplerowsize < outwidth*4)
594 Mem_Free(resamplerow1);
596 Mem_Free(resamplerow2);
597 resamplerowsize = outwidth*4;
598 resamplerow1 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
599 resamplerow2 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
601 #define row1 resamplerow1
602 #define row2 resamplerow2
603 if (bytesperpixel == 4)
605 if (r_lerpimages.integer)
607 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth4 = inwidth*4, outwidth4 = outwidth*4;
610 fstep = (int) (inheight*65536.0f/outheight);
614 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
615 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
616 for (i = 0, f = 0;i < outheight;i++,f += fstep)
624 inrow = (byte *)indata + inwidth4*yi;
626 memcpy(row1, row2, outwidth4);
628 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
629 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
635 #define LERPBYTE(i) out[i] = (byte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
688 inrow = (byte *)indata + inwidth4*yi;
690 memcpy(row1, row2, outwidth4);
692 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
695 memcpy(out, row1, outwidth4);
702 unsigned frac, fracstep;
703 // relies on int being 4 bytes
707 fracstep = inwidth*0x10000/outwidth;
708 for (i = 0;i < outheight;i++)
710 inrow = (int *)indata + inwidth*(i*inheight/outheight);
711 frac = fracstep >> 1;
715 out[0] = inrow[frac >> 16];frac += fracstep;
716 out[1] = inrow[frac >> 16];frac += fracstep;
717 out[2] = inrow[frac >> 16];frac += fracstep;
718 out[3] = inrow[frac >> 16];frac += fracstep;
724 out[0] = inrow[frac >> 16];frac += fracstep;
725 out[1] = inrow[frac >> 16];frac += fracstep;
730 out[0] = inrow[frac >> 16];frac += fracstep;
736 else if (bytesperpixel == 3)
738 if (r_lerpimages.integer)
740 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
743 fstep = (int) (inheight*65536.0f/outheight);
747 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
748 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
749 for (i = 0, f = 0;i < outheight;i++,f += fstep)
757 inrow = (byte *)indata + inwidth3*yi;
759 memcpy(row1, row2, outwidth3);
761 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
762 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
768 #define LERPBYTE(i) out[i] = (byte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
814 inrow = (byte *)indata + inwidth3*yi;
816 memcpy(row1, row2, outwidth3);
818 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
821 memcpy(out, row1, outwidth3);
827 int i, j, f, inwidth3 = inwidth * 3;
828 unsigned frac, fracstep;
832 fracstep = inwidth*0x10000/outwidth;
833 for (i = 0;i < outheight;i++)
835 inrow = (byte *)indata + inwidth3*(i*inheight/outheight);
836 frac = fracstep >> 1;
840 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
841 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
842 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
843 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
848 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
849 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
854 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
861 Sys_Error("R_ResampleTexture: unsupported bytesperpixel %i\n", bytesperpixel);
866 // in can be the same as out
867 static void R_MipReduce(byte *in, byte *out, int *width, int *height, int destwidth, int destheight, int bytesperpixel)
870 nextrow = *width * bytesperpixel;
871 if (*width > destwidth)
874 if (*height > destheight)
878 if (bytesperpixel == 4)
880 for (y = 0;y < *height;y++)
882 for (x = 0;x < *width;x++)
884 out[0] = (byte) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
885 out[1] = (byte) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
886 out[2] = (byte) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
887 out[3] = (byte) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
891 in += nextrow; // skip a line
894 else if (bytesperpixel == 3)
896 for (y = 0;y < *height;y++)
898 for (x = 0;x < *width;x++)
900 out[0] = (byte) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
901 out[1] = (byte) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
902 out[2] = (byte) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
906 in += nextrow; // skip a line
910 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
915 if (bytesperpixel == 4)
917 for (y = 0;y < *height;y++)
919 for (x = 0;x < *width;x++)
921 out[0] = (byte) ((in[0] + in[4]) >> 1);
922 out[1] = (byte) ((in[1] + in[5]) >> 1);
923 out[2] = (byte) ((in[2] + in[6]) >> 1);
924 out[3] = (byte) ((in[3] + in[7]) >> 1);
930 else if (bytesperpixel == 3)
932 for (y = 0;y < *height;y++)
934 for (x = 0;x < *width;x++)
936 out[0] = (byte) ((in[0] + in[3]) >> 1);
937 out[1] = (byte) ((in[1] + in[4]) >> 1);
938 out[2] = (byte) ((in[2] + in[5]) >> 1);
945 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
950 if (*height > destheight)
954 if (bytesperpixel == 4)
956 for (y = 0;y < *height;y++)
958 for (x = 0;x < *width;x++)
960 out[0] = (byte) ((in[0] + in[nextrow ]) >> 1);
961 out[1] = (byte) ((in[1] + in[nextrow+1]) >> 1);
962 out[2] = (byte) ((in[2] + in[nextrow+2]) >> 1);
963 out[3] = (byte) ((in[3] + in[nextrow+3]) >> 1);
967 in += nextrow; // skip a line
970 else if (bytesperpixel == 3)
972 for (y = 0;y < *height;y++)
974 for (x = 0;x < *width;x++)
976 out[0] = (byte) ((in[0] + in[nextrow ]) >> 1);
977 out[1] = (byte) ((in[1] + in[nextrow+1]) >> 1);
978 out[2] = (byte) ((in[2] + in[nextrow+2]) >> 1);
982 in += nextrow; // skip a line
986 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
989 Sys_Error("R_MipReduce: desired size already achieved\n");
993 static void R_Upload(gltexture_t *glt, byte *data)
995 int mip, width, height, internalformat;
999 glBindTexture(GL_TEXTURE_2D, glt->image->texnum);
1002 glt->flags &= ~GLTEXF_UPLOAD;
1004 if (glt->flags & TEXF_FRAGMENT)
1006 if (resizebuffersize < glt->image->width * glt->image->height * glt->image->bytesperpixel)
1008 resizebuffersize = glt->image->width * glt->image->height * glt->image->bytesperpixel;
1010 Mem_Free(resizebuffer);
1011 if (colorconvertbuffer)
1012 Mem_Free(colorconvertbuffer);
1013 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1014 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1015 if (!resizebuffer || !colorconvertbuffer)
1016 Host_Error("R_Upload: out of memory\n");
1019 if (glt->image->flags & GLTEXF_UPLOAD)
1021 Con_DPrintf("uploaded new fragments image\n");
1022 glt->image->flags &= ~GLTEXF_UPLOAD;
1023 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->bytesperpixel);
1024 glTexImage2D (GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
1026 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1028 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1032 if (prevbuffer == NULL)
1034 memset(resizebuffer, 255, glt->width * glt->height * glt->image->bytesperpixel);
1035 prevbuffer = resizebuffer;
1037 else if (glt->textype->textype == TEXTYPE_QPALETTE)
1039 // promote paletted to RGBA, so we only have to worry about RGB and
1040 // RGBA in the rest of this code
1041 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1042 prevbuffer = colorconvertbuffer;
1045 glTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1050 glt->image->flags &= ~GLTEXF_UPLOAD;
1052 // these are rounded up versions of the size to do better resampling
1053 for (width = 1;width < glt->width;width <<= 1);
1054 for (height = 1;height < glt->height;height <<= 1);
1056 if (resizebuffersize < width * height * glt->image->bytesperpixel)
1058 resizebuffersize = width * height * glt->image->bytesperpixel;
1060 Mem_Free(resizebuffer);
1061 if (colorconvertbuffer)
1062 Mem_Free(colorconvertbuffer);
1063 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1064 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1065 if (!resizebuffer || !colorconvertbuffer)
1066 Host_Error("R_Upload: out of memory\n");
1069 if (prevbuffer == NULL)
1071 width = glt->image->width;
1072 height = glt->image->height;
1073 memset(resizebuffer, 255, width * height * glt->image->bytesperpixel);
1074 prevbuffer = resizebuffer;
1078 if (glt->textype->textype == TEXTYPE_QPALETTE)
1080 // promote paletted to RGBA, so we only have to worry about RGB and
1081 // RGBA in the rest of this code
1082 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1083 prevbuffer = colorconvertbuffer;
1086 if (glt->width != width || glt->height != height)
1088 R_ResampleTexture(prevbuffer, glt->width, glt->height, resizebuffer, width, height, glt->image->bytesperpixel);
1089 prevbuffer = resizebuffer;
1092 // apply picmip/max_size limitations
1093 while (width > glt->image->width || height > glt->image->height)
1095 R_MipReduce(prevbuffer, resizebuffer, &width, &height, glt->image->width, glt->image->height, glt->image->bytesperpixel);
1096 prevbuffer = resizebuffer;
1100 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
1102 if (glt->flags & TEXF_ALPHA)
1106 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1108 if (glt->flags & TEXF_MIPMAP)
1110 while (width > 1 || height > 1)
1112 R_MipReduce(prevbuffer, resizebuffer, &width, &height, 1, 1, glt->image->bytesperpixel);
1113 prevbuffer = resizebuffer;
1115 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1119 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
1121 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1126 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1128 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1133 static void R_FindImageForTexture(gltexture_t *glt)
1135 int i, j, best, best2, x, y, w, h;
1136 textypeinfo_t *texinfo;
1137 gltexturepool_t *pool;
1138 gltextureimage_t *image, **imagechainpointer;
1139 texinfo = glt->textype;
1146 if (glt->flags & TEXF_FRAGMENT)
1148 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
1150 image = *imagechainpointer;
1151 if (image->type != GLIMAGETYPE_FRAGMENTS)
1153 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
1156 // got a fragments texture, find a place in it if we can
1158 for (best = block_size, i = 0;i < block_size - w;i += texinfo->align)
1160 for (best2 = 0, j = 0;j < w;j++)
1162 if (image->blockallocation[i+j] >= best)
1164 if (best2 < image->blockallocation[i+j])
1165 best2 = image->blockallocation[i+j];
1169 // this is a valid spot
1175 if (best + h > block_size)
1178 for (i = 0;i < w;i++)
1179 image->blockallocation[x + i] = best + h;
1184 image->texturecount++;
1188 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1190 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1191 //memset(image, 0, sizeof(*image));
1192 image->type = GLIMAGETYPE_FRAGMENTS;
1193 image->width = block_size;
1194 image->height = block_size;
1195 image->blockallocation = Mem_Alloc(texturemempool, block_size * sizeof(short));
1196 memset(image->blockallocation, 0, block_size * sizeof(short));
1200 for (i = 0;i < w;i++)
1201 image->blockallocation[x + i] = y + h;
1205 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
1207 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1209 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1210 //memset(image, 0, sizeof(*image));
1211 image->type = GLIMAGETYPE_TILE;
1212 image->blockallocation = NULL;
1214 // calculate final size
1215 if (r_max_size.integer > realmaxsize)
1216 Cvar_SetValue("r_max_size", realmaxsize);
1217 for (image->width = 1;image->width < glt->width;image->width <<= 1);
1218 for (image->height = 1;image->height < glt->height;image->height <<= 1);
1219 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
1220 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
1221 if (image->width < 1) image->width = 1;
1222 if (image->height < 1) image->height = 1;
1224 image->glinternalformat = texinfo->glinternalformat;
1225 image->glformat = texinfo->glformat;
1226 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA)) | GLTEXF_UPLOAD;
1227 image->bytesperpixel = texinfo->internalbytesperpixel;
1228 for (i = 1;i < MAX_GLTEXTURES;i++)
1229 if (!gltexnuminuse[i])
1231 if (i < MAX_GLTEXTURES)
1232 gltexnuminuse[image->texnum = i] = true;
1234 Sys_Error("R_FindImageForTexture: ran out of GL textures\n");
1235 *imagechainpointer = image;
1236 image->texturecount++;
1243 // note: R_FindImageForTexture must be called before this
1244 static void R_UploadTexture (gltexture_t *glt)
1246 if (!(glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL)))
1249 if (glt->flags & GLTEXF_PROCEDURAL)
1253 if (texturebuffersize < glt->width * glt->height * glt->textype->inputbytesperpixel)
1256 Mem_Free(texturebuffer);
1257 texturebuffersize = glt->width * glt->height * glt->textype->inputbytesperpixel;
1258 texturebuffer = Mem_Alloc(textureprocessingmempool, texturebuffersize);
1261 glt->generate(texturebuffer, glt->width, glt->height, (void *)glt->proceduraldata, glt->proceduraldatasize);
1266 R_Upload(glt, glt->inputtexels);
1267 if (glt->inputtexels)
1269 Mem_Free(glt->inputtexels);
1270 glt->inputtexels = NULL;
1271 glt->flags |= GLTEXF_DESTROYED;
1273 else if (glt->flags & GLTEXF_DESTROYED)
1274 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
1278 static gltexture_t *R_SetupTexture(gltexturepool_t *pool, char *identifier, int crc, int width, int height, int flags, textypeinfo_t *texinfo, byte *data, int (*generate)(byte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
1281 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1282 //memset(glt, 0, sizeof(gltexture_t));
1285 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1286 strcpy (glt->identifier, identifier);
1289 glt->identifier = NULL;
1291 glt->chain = pool->gltchain;
1292 pool->gltchain = glt;
1295 glt->height = height;
1297 glt->textype = texinfo;
1301 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * texinfo->inputbytesperpixel);
1302 if (glt->inputtexels == NULL)
1303 Sys_Error("R_SetupTexture: out of memory\n");
1304 memcpy(glt->inputtexels, data, glt->width * glt->height * texinfo->inputbytesperpixel);
1307 glt->inputtexels = NULL;
1309 glt->generate = generate;
1310 glt->proceduraldatasize = proceduraldatasize;
1311 if (proceduraldatasize)
1313 glt->proceduraldata = Mem_Alloc(texturemempool, proceduraldatasize);
1314 if (glt->proceduraldata == NULL)
1315 Sys_Error("R_SetupTexture: out of memory\n");
1318 glt->proceduraldata = NULL;
1320 R_FindImageForTexture(glt);
1321 R_PrecacheTexture(glt);
1331 rtexture_t *R_LoadTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, byte *data, int textype, int flags)
1335 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1336 textypeinfo_t *texinfo;
1339 if (cls.state == ca_dedicated)
1342 texinfo = R_GetTexTypeInfo(textype, flags);
1345 // if (data == NULL)
1346 // Host_Error("R_LoadTexture: \"%s\" has no data\n", identifier);
1348 if (flags & TEXF_FRAGMENT)
1350 if (width > block_size || height > block_size)
1351 Host_Error("R_LoadTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1352 if ((width * texinfo->internalbytesperpixel) & 3)
1353 Host_Error("R_LoadTexture: incompatible width for fragment");
1356 // clear the alpha flag if the texture has no transparent pixels
1359 case TEXTYPE_QPALETTE:
1360 if (flags & TEXF_ALPHA)
1362 flags &= ~TEXF_ALPHA;
1363 for (i = 0;i < width * height;i++)
1367 flags |= TEXF_ALPHA;
1374 if (flags & TEXF_ALPHA)
1375 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1378 if (flags & TEXF_ALPHA)
1380 flags &= ~TEXF_ALPHA;
1381 for (i = 0;i < width * height;i++)
1383 if (data[i * 4 + 3] < 255)
1385 flags |= TEXF_ALPHA;
1392 Host_Error("R_LoadTexture: unknown texture type\n");
1395 // LordHavoc: do a CRC to confirm the data really is the same as previous occurances.
1399 crc = CRC_Block(data, width*height*texinfo->inputbytesperpixel);
1401 // see if the texture is already present
1402 if (identifier && (glt = R_FindTexture(pool, identifier)))
1404 if (crc == glt->crc && width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
1406 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1407 return (rtexture_t *)glt; // exact match, use existing
1409 Con_Printf("R_LoadTexture: cache mismatch on %s, replacing old texture\n", identifier);
1413 return (rtexture_t *)R_SetupTexture(pool, identifier, crc, width, height, flags | GLTEXF_UPLOAD, texinfo, data, NULL, NULL, 0);
1416 rtexture_t *R_ProceduralTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, int textype, int flags, int (*generate)(byte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
1419 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1420 textypeinfo_t *texinfo;
1422 if (cls.state == ca_dedicated)
1425 texinfo = R_GetTexTypeInfo(textype, flags);
1427 // no function is supported, for odd uses
1428 // if (generate == NULL)
1429 // Host_Error("R_ProceduralTexture: \"%s\" has no generate function\n", identifier);
1430 if (flags & TEXF_FRAGMENT)
1432 if (width > block_size || height > block_size)
1433 Host_Error("R_ProceduralTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1434 if ((width * texinfo->internalbytesperpixel) & 3)
1435 Host_Error("R_ProceduralTexture: incompatible width for fragment");
1438 // see if the texture is already present
1439 if (identifier && (glt = R_FindTexture(pool, identifier)))
1441 if (width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
1443 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1444 return (rtexture_t *)glt; // exact match, use existing
1446 Con_DPrintf("R_LoadTexture: cache mismatch, replacing old texture\n");
1450 return (rtexture_t *)R_SetupTexture(pool, identifier, 0, width, height, flags | GLTEXF_PROCEDURAL | GLTEXF_UPLOAD, texinfo, NULL, generate, proceduraldata, proceduraldatasize);
1453 int R_TextureHasAlpha(rtexture_t *rt)
1458 glt = (gltexture_t *)rt;
1459 return (glt->flags & TEXF_ALPHA) != 0;
1462 int R_TextureWidth(rtexture_t *rt)
1466 return ((gltexture_t *)rt)->width;
1469 int R_TextureHeight(rtexture_t *rt)
1473 return ((gltexture_t *)rt)->height;
1476 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1479 float iwidth, iheight;
1480 if (cls.state == ca_dedicated)
1486 if (fx1 || fy1 || fx2 || fy2)
1500 Host_Error("R_FragmentLocation: no texture supplied\n");
1501 glt = (gltexture_t *)rt;
1502 if (glt->flags & TEXF_FRAGMENT)
1508 if (fx1 || fy1 || fx2 || fy2)
1510 iwidth = 1.0f / glt->image->width;
1511 iheight = 1.0f / glt->image->height;
1513 *fx1 = glt->x * iwidth;
1515 *fy1 = glt->y * iheight;
1517 *fx2 = (glt->x + glt->width) * iwidth;
1519 *fy2 = (glt->y + glt->height) * iheight;
1528 if (fx1 || fy1 || fx2 || fy2)
1542 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1544 textypeinfo_t *texinfo = R_GetTexTypeInfo(textype, flags);
1545 while ((width * texinfo->internalbytesperpixel) & 3)
1550 void R_UpdateTexture(rtexture_t *rt, byte *data)
1554 Host_Error("R_UpdateTexture: no texture supplied\n");
1556 Host_Error("R_UpdateTexture: no data supplied\n");
1557 glt = (gltexture_t *)rt;
1559 if (!(glt->flags & GLTEXF_PROCEDURAL))
1561 if (glt->inputtexels == NULL)
1563 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * glt->textype->inputbytesperpixel);
1564 if (glt->inputtexels == NULL)
1565 Host_Error("R_UpdateTexture: ran out of memory\n");
1567 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1569 R_Upload(glt, data);
1571 // if it has not been uploaded yet, update the data that will be used when it is
1572 if (glt->inputtexels)
1573 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1575 R_Upload(glt, data);