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 pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
269 //memset(pool, 0, sizeof(gltexturepool_t));
270 pool->next = gltexturepoolchain;
271 gltexturepoolchain = pool;
272 pool->sentinel = TEXTUREPOOL_SENTINEL;
273 return (rtexturepool_t *)pool;
276 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
278 gltexturepool_t *pool, **poolpointer;
279 if (rtexturepool == NULL)
281 if (*rtexturepool == NULL)
283 pool = (gltexturepool_t *)(*rtexturepool);
284 *rtexturepool = NULL;
285 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
286 Host_Error("R_FreeTexturePool: pool already freed\n");
287 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
288 if (*poolpointer == pool)
289 *poolpointer = pool->next;
291 Host_Error("R_FreeTexturePool: pool not linked\n");
292 while (pool->gltchain)
293 R_FreeTexture(pool->gltchain);
294 if (pool->imagechain)
295 Sys_Error("R_FreeTexturePool: not all images freed\n");
303 int minification, magnification;
307 static glmode_t modes[] =
309 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
310 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
311 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
312 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
313 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
314 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
317 static void GL_TextureMode_f (void)
320 gltextureimage_t *image;
321 gltexturepool_t *pool;
325 for (i = 0;i < 6;i++)
327 if (gl_filter_min == modes[i].minification)
329 Con_Printf ("%s\n", modes[i].name);
333 Con_Printf ("current filter is unknown???\n");
337 for (i = 0;i < 6;i++)
338 if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
342 Con_Printf ("bad filter name\n");
346 gl_filter_min = modes[i].minification;
347 gl_filter_mag = modes[i].magnification;
349 // change all the existing mipmap texture objects
350 // FIXME: force renderer(/client/something?) restart instead?
351 for (pool = gltexturepoolchain;pool;pool = pool->next)
353 for (image = pool->imagechain;image;image = image->imagechain)
355 // only update already uploaded images
356 if (!(image->flags & GLTEXF_UPLOAD))
358 glBindTexture(GL_TEXTURE_2D, image->texnum);
359 if (image->flags & TEXF_MIPMAP)
360 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
362 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
363 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
369 static int R_CalcTexelDataSize (gltexture_t *glt)
371 int width2, height2, size;
372 if (glt->flags & TEXF_FRAGMENT)
373 size = glt->width * glt->height;
376 if (r_max_size.integer > realmaxsize)
377 Cvar_SetValue("r_max_size", realmaxsize);
378 // calculate final size
379 for (width2 = 1;width2 < glt->width;width2 <<= 1);
380 for (height2 = 1;height2 < glt->height;height2 <<= 1);
381 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
382 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
383 if (width2 < 1) width2 = 1;
384 if (height2 < 1) height2 = 1;
387 if (glt->flags & TEXF_MIPMAP)
389 while (width2 > 1 || height2 > 1)
391 size += width2 * height2;
397 size++; // count the last 1x1 mipmap
400 size = width2*height2;
402 size *= glt->textype->internalbytesperpixel;
407 void R_TextureStats_PrintTotal(void)
409 int glsize, inputsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
411 gltexturepool_t *pool;
412 for (pool = gltexturepoolchain;pool;pool = pool->next)
414 for (glt = pool->gltchain;glt;glt = glt->chain)
416 glsize = R_CalcTexelDataSize(glt);
417 inputsize = glt->width * glt->height * glt->textype->inputbytesperpixel;
422 if (!(glt->flags & GLTEXF_UPLOAD))
426 loadedp += inputsize;
430 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);
433 static void R_TextureStats_f(void)
437 gltexturepool_t *pool;
438 Con_Printf("glsize input crc loaded mip alpha name\n");
439 for (pool = gltexturepoolchain;pool;pool = pool->next)
441 for (glt = pool->gltchain;glt;glt = glt->chain)
443 loaded = !(glt->flags & GLTEXF_UPLOAD);
444 if (glt->flags & GLTEXF_PROCEDURAL)
445 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>");
447 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>");
449 Con_Printf("pool %10p\n", pool);
451 R_TextureStats_PrintTotal();
454 char engineversion[40];
456 static void r_textures_start(void)
458 // deal with size limits of various drivers (3dfx in particular)
459 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
462 // use the largest scrap texture size we can (not sure if this is really a good idea)
463 for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
465 texturemempool = Mem_AllocPool("Texture Info");
466 texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
467 textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
468 gltexnuminuse = Mem_Alloc(texturemempool, MAX_GLTEXTURES);
469 //memset(gltexnuminuse, 0, MAX_GLTEXTURES);
472 static void r_textures_shutdown(void)
474 rtexturepool_t *temp;
475 while(gltexturepoolchain)
477 temp = (rtexturepool_t *) gltexturepoolchain;
478 R_FreeTexturePool(&temp);
482 if (resizebuffer) Mem_Free(resizebuffer);resizebuffer = NULL;
483 if (colorconvertbuffer) Mem_Free(colorconvertbuffer);colorconvertbuffer = NULL;
484 if (resamplerow1) Mem_Free(resamplerow1);resamplerow1 = NULL;
485 if (resamplerow2) Mem_Free(resamplerow2);resamplerow2 = NULL;
486 if (texturebuffer) Mem_Free(texturebuffer);texturebuffer = NULL;
487 if (gltexnuminuse) Mem_Free(gltexnuminuse);gltexnuminuse = NULL;
489 resizebuffersize = 0;
491 texturebuffersize = 0;
493 colorconvertbuffer = NULL;
496 texturebuffer = NULL;
497 gltexnuminuse = NULL;
498 Mem_FreePool(&texturemempool);
499 Mem_FreePool(&texturedatamempool);
500 Mem_FreePool(&textureprocessingmempool);
503 static void r_textures_newmap(void)
507 void R_Textures_Init (void)
509 Cmd_AddCommand ("gl_texturemode", &GL_TextureMode_f);
510 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
511 Cvar_RegisterVariable (&r_max_scrapsize);
512 Cvar_RegisterVariable (&r_max_size);
513 Cvar_RegisterVariable (&r_picmip);
514 Cvar_RegisterVariable (&r_lerpimages);
515 Cvar_RegisterVariable (&r_precachetextures);
516 gltexnuminuse = NULL;
518 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
521 static void R_ResampleTextureLerpLine (byte *in, byte *out, int inwidth, int outwidth, int bytesperpixel)
523 int j, xi, oldx = 0, f, fstep, endx, lerp;
524 fstep = (int) (inwidth*65536.0f/outwidth);
526 if (bytesperpixel == 4)
528 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
533 in += (xi - oldx) * 4;
539 *out++ = (byte) ((((in[4] - in[0]) * lerp) >> 16) + in[0]);
540 *out++ = (byte) ((((in[5] - in[1]) * lerp) >> 16) + in[1]);
541 *out++ = (byte) ((((in[6] - in[2]) * lerp) >> 16) + in[2]);
542 *out++ = (byte) ((((in[7] - in[3]) * lerp) >> 16) + in[3]);
544 else // last pixel of the line has no pixel to lerp to
553 else if (bytesperpixel == 3)
555 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
560 in += (xi - oldx) * 3;
566 *out++ = (byte) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
567 *out++ = (byte) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
568 *out++ = (byte) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
570 else // last pixel of the line has no pixel to lerp to
579 Sys_Error("R_ResampleTextureLerpLine: unsupported bytesperpixel %i\n", bytesperpixel);
587 static void R_ResampleTexture (void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight, int bytesperpixel)
589 if (resamplerowsize < outwidth*4)
592 Mem_Free(resamplerow1);
594 Mem_Free(resamplerow2);
595 resamplerowsize = outwidth*4;
596 resamplerow1 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
597 resamplerow2 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
599 #define row1 resamplerow1
600 #define row2 resamplerow2
601 if (bytesperpixel == 4)
603 if (r_lerpimages.integer)
605 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth4 = inwidth*4, outwidth4 = outwidth*4;
608 fstep = (int) (inheight*65536.0f/outheight);
612 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
613 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
614 for (i = 0, f = 0;i < outheight;i++,f += fstep)
622 inrow = (byte *)indata + inwidth4*yi;
624 memcpy(row1, row2, outwidth4);
626 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
627 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
633 #define LERPBYTE(i) out[i] = (byte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
686 inrow = (byte *)indata + inwidth4*yi;
688 memcpy(row1, row2, outwidth4);
690 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
693 memcpy(out, row1, outwidth4);
700 unsigned frac, fracstep;
701 // relies on int being 4 bytes
705 fracstep = inwidth*0x10000/outwidth;
706 for (i = 0;i < outheight;i++)
708 inrow = (int *)indata + inwidth*(i*inheight/outheight);
709 frac = fracstep >> 1;
713 out[0] = inrow[frac >> 16];frac += fracstep;
714 out[1] = inrow[frac >> 16];frac += fracstep;
715 out[2] = inrow[frac >> 16];frac += fracstep;
716 out[3] = inrow[frac >> 16];frac += fracstep;
722 out[0] = inrow[frac >> 16];frac += fracstep;
723 out[1] = inrow[frac >> 16];frac += fracstep;
728 out[0] = inrow[frac >> 16];frac += fracstep;
734 else if (bytesperpixel == 3)
736 if (r_lerpimages.integer)
738 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
741 fstep = (int) (inheight*65536.0f/outheight);
745 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
746 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
747 for (i = 0, f = 0;i < outheight;i++,f += fstep)
755 inrow = (byte *)indata + inwidth3*yi;
757 memcpy(row1, row2, outwidth3);
759 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
760 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
766 #define LERPBYTE(i) out[i] = (byte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
812 inrow = (byte *)indata + inwidth3*yi;
814 memcpy(row1, row2, outwidth3);
816 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
819 memcpy(out, row1, outwidth3);
825 int i, j, f, inwidth3 = inwidth * 3;
826 unsigned frac, fracstep;
830 fracstep = inwidth*0x10000/outwidth;
831 for (i = 0;i < outheight;i++)
833 inrow = (byte *)indata + inwidth3*(i*inheight/outheight);
834 frac = fracstep >> 1;
838 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
839 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
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;
846 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
847 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
852 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
859 Sys_Error("R_ResampleTexture: unsupported bytesperpixel %i\n", bytesperpixel);
864 // in can be the same as out
865 static void R_MipReduce(byte *in, byte *out, int *width, int *height, int destwidth, int destheight, int bytesperpixel)
868 nextrow = *width * bytesperpixel;
869 if (*width > destwidth)
872 if (*height > destheight)
876 if (bytesperpixel == 4)
878 for (y = 0;y < *height;y++)
880 for (x = 0;x < *width;x++)
882 out[0] = (byte) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
883 out[1] = (byte) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
884 out[2] = (byte) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
885 out[3] = (byte) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
889 in += nextrow; // skip a line
892 else if (bytesperpixel == 3)
894 for (y = 0;y < *height;y++)
896 for (x = 0;x < *width;x++)
898 out[0] = (byte) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
899 out[1] = (byte) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
900 out[2] = (byte) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
904 in += nextrow; // skip a line
908 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
913 if (bytesperpixel == 4)
915 for (y = 0;y < *height;y++)
917 for (x = 0;x < *width;x++)
919 out[0] = (byte) ((in[0] + in[4]) >> 1);
920 out[1] = (byte) ((in[1] + in[5]) >> 1);
921 out[2] = (byte) ((in[2] + in[6]) >> 1);
922 out[3] = (byte) ((in[3] + in[7]) >> 1);
928 else if (bytesperpixel == 3)
930 for (y = 0;y < *height;y++)
932 for (x = 0;x < *width;x++)
934 out[0] = (byte) ((in[0] + in[3]) >> 1);
935 out[1] = (byte) ((in[1] + in[4]) >> 1);
936 out[2] = (byte) ((in[2] + in[5]) >> 1);
943 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
948 if (*height > destheight)
952 if (bytesperpixel == 4)
954 for (y = 0;y < *height;y++)
956 for (x = 0;x < *width;x++)
958 out[0] = (byte) ((in[0] + in[nextrow ]) >> 1);
959 out[1] = (byte) ((in[1] + in[nextrow+1]) >> 1);
960 out[2] = (byte) ((in[2] + in[nextrow+2]) >> 1);
961 out[3] = (byte) ((in[3] + in[nextrow+3]) >> 1);
965 in += nextrow; // skip a line
968 else if (bytesperpixel == 3)
970 for (y = 0;y < *height;y++)
972 for (x = 0;x < *width;x++)
974 out[0] = (byte) ((in[0] + in[nextrow ]) >> 1);
975 out[1] = (byte) ((in[1] + in[nextrow+1]) >> 1);
976 out[2] = (byte) ((in[2] + in[nextrow+2]) >> 1);
980 in += nextrow; // skip a line
984 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
987 Sys_Error("R_MipReduce: desired size already achieved\n");
991 static void R_Upload(gltexture_t *glt, byte *data)
993 int mip, width, height, internalformat;
997 glBindTexture(GL_TEXTURE_2D, glt->image->texnum);
1000 glt->flags &= ~GLTEXF_UPLOAD;
1002 if (glt->flags & TEXF_FRAGMENT)
1004 if (resizebuffersize < glt->image->width * glt->image->height * glt->image->bytesperpixel)
1006 resizebuffersize = glt->image->width * glt->image->height * glt->image->bytesperpixel;
1008 Mem_Free(resizebuffer);
1009 if (colorconvertbuffer)
1010 Mem_Free(colorconvertbuffer);
1011 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1012 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1013 if (!resizebuffer || !colorconvertbuffer)
1014 Host_Error("R_Upload: out of memory\n");
1017 if (glt->image->flags & GLTEXF_UPLOAD)
1019 Con_DPrintf("uploaded new fragments image\n");
1020 glt->image->flags &= ~GLTEXF_UPLOAD;
1021 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->bytesperpixel);
1022 glTexImage2D (GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
1024 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1026 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1030 if (prevbuffer == NULL)
1032 memset(resizebuffer, 255, glt->width * glt->height * glt->image->bytesperpixel);
1033 prevbuffer = resizebuffer;
1035 else if (glt->textype->textype == TEXTYPE_QPALETTE)
1037 // promote paletted to RGBA, so we only have to worry about RGB and
1038 // RGBA in the rest of this code
1039 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1040 prevbuffer = colorconvertbuffer;
1043 glTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1048 glt->image->flags &= ~GLTEXF_UPLOAD;
1050 // these are rounded up versions of the size to do better resampling
1051 for (width = 1;width < glt->width;width <<= 1);
1052 for (height = 1;height < glt->height;height <<= 1);
1054 if (resizebuffersize < width * height * glt->image->bytesperpixel)
1056 resizebuffersize = width * height * glt->image->bytesperpixel;
1058 Mem_Free(resizebuffer);
1059 if (colorconvertbuffer)
1060 Mem_Free(colorconvertbuffer);
1061 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1062 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1063 if (!resizebuffer || !colorconvertbuffer)
1064 Host_Error("R_Upload: out of memory\n");
1067 if (prevbuffer == NULL)
1069 width = glt->image->width;
1070 height = glt->image->height;
1071 memset(resizebuffer, 255, width * height * glt->image->bytesperpixel);
1072 prevbuffer = resizebuffer;
1076 if (glt->textype->textype == TEXTYPE_QPALETTE)
1078 // promote paletted to RGBA, so we only have to worry about RGB and
1079 // RGBA in the rest of this code
1080 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1081 prevbuffer = colorconvertbuffer;
1084 if (glt->width != width || glt->height != height)
1086 R_ResampleTexture(prevbuffer, glt->width, glt->height, resizebuffer, width, height, glt->image->bytesperpixel);
1087 prevbuffer = resizebuffer;
1090 // apply picmip/max_size limitations
1091 while (width > glt->image->width || height > glt->image->height)
1093 R_MipReduce(prevbuffer, resizebuffer, &width, &height, glt->image->width, glt->image->height, glt->image->bytesperpixel);
1094 prevbuffer = resizebuffer;
1098 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
1100 if (glt->flags & TEXF_ALPHA)
1104 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1106 if (glt->flags & TEXF_MIPMAP)
1108 while (width > 1 || height > 1)
1110 R_MipReduce(prevbuffer, resizebuffer, &width, &height, 1, 1, glt->image->bytesperpixel);
1111 prevbuffer = resizebuffer;
1113 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1117 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
1119 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1124 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1126 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1131 static void R_FindImageForTexture(gltexture_t *glt)
1133 int i, j, best, best2, x, y, w, h;
1134 textypeinfo_t *texinfo;
1135 gltexturepool_t *pool;
1136 gltextureimage_t *image, **imagechainpointer;
1137 texinfo = glt->textype;
1144 if (glt->flags & TEXF_FRAGMENT)
1146 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
1148 image = *imagechainpointer;
1149 if (image->type != GLIMAGETYPE_FRAGMENTS)
1151 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
1154 // got a fragments texture, find a place in it if we can
1156 for (best = block_size, i = 0;i < block_size - w;i += texinfo->align)
1158 for (best2 = 0, j = 0;j < w;j++)
1160 if (image->blockallocation[i+j] >= best)
1162 if (best2 < image->blockallocation[i+j])
1163 best2 = image->blockallocation[i+j];
1167 // this is a valid spot
1173 if (best + h > block_size)
1176 for (i = 0;i < w;i++)
1177 image->blockallocation[x + i] = best + h;
1182 image->texturecount++;
1186 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1188 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1189 //memset(image, 0, sizeof(*image));
1190 image->type = GLIMAGETYPE_FRAGMENTS;
1191 image->width = block_size;
1192 image->height = block_size;
1193 image->blockallocation = Mem_Alloc(texturemempool, block_size * sizeof(short));
1194 memset(image->blockallocation, 0, block_size * sizeof(short));
1198 for (i = 0;i < w;i++)
1199 image->blockallocation[x + i] = y + h;
1203 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
1205 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1207 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1208 //memset(image, 0, sizeof(*image));
1209 image->type = GLIMAGETYPE_TILE;
1210 image->blockallocation = NULL;
1212 // calculate final size
1213 if (r_max_size.integer > realmaxsize)
1214 Cvar_SetValue("r_max_size", realmaxsize);
1215 for (image->width = 1;image->width < glt->width;image->width <<= 1);
1216 for (image->height = 1;image->height < glt->height;image->height <<= 1);
1217 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
1218 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
1219 if (image->width < 1) image->width = 1;
1220 if (image->height < 1) image->height = 1;
1222 image->glinternalformat = texinfo->glinternalformat;
1223 image->glformat = texinfo->glformat;
1224 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA)) | GLTEXF_UPLOAD;
1225 image->bytesperpixel = texinfo->internalbytesperpixel;
1226 for (i = 1;i < MAX_GLTEXTURES;i++)
1227 if (!gltexnuminuse[i])
1229 if (i < MAX_GLTEXTURES)
1230 gltexnuminuse[image->texnum = i] = true;
1232 Sys_Error("R_FindImageForTexture: ran out of GL textures\n");
1233 *imagechainpointer = image;
1234 image->texturecount++;
1241 // note: R_FindImageForTexture must be called before this
1242 static void R_UploadTexture (gltexture_t *glt)
1244 if (!(glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL)))
1247 if (glt->flags & GLTEXF_PROCEDURAL)
1251 if (texturebuffersize < glt->width * glt->height * glt->textype->inputbytesperpixel)
1254 Mem_Free(texturebuffer);
1255 texturebuffersize = glt->width * glt->height * glt->textype->inputbytesperpixel;
1256 texturebuffer = Mem_Alloc(textureprocessingmempool, texturebuffersize);
1259 glt->generate(texturebuffer, glt->width, glt->height, (void *)glt->proceduraldata, glt->proceduraldatasize);
1264 R_Upload(glt, glt->inputtexels);
1265 if (glt->inputtexels)
1267 Mem_Free(glt->inputtexels);
1268 glt->inputtexels = NULL;
1269 glt->flags |= GLTEXF_DESTROYED;
1271 else if (glt->flags & GLTEXF_DESTROYED)
1272 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
1276 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)
1279 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1280 //memset(glt, 0, sizeof(gltexture_t));
1283 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1284 strcpy (glt->identifier, identifier);
1287 glt->identifier = NULL;
1289 glt->chain = pool->gltchain;
1290 pool->gltchain = glt;
1293 glt->height = height;
1295 glt->textype = texinfo;
1299 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * texinfo->inputbytesperpixel);
1300 if (glt->inputtexels == NULL)
1301 Sys_Error("R_SetupTexture: out of memory\n");
1302 memcpy(glt->inputtexels, data, glt->width * glt->height * texinfo->inputbytesperpixel);
1305 glt->inputtexels = NULL;
1307 glt->generate = generate;
1308 glt->proceduraldatasize = proceduraldatasize;
1309 if (proceduraldatasize)
1311 glt->proceduraldata = Mem_Alloc(texturemempool, proceduraldatasize);
1312 if (glt->proceduraldata == NULL)
1313 Sys_Error("R_SetupTexture: out of memory\n");
1316 glt->proceduraldata = NULL;
1318 R_FindImageForTexture(glt);
1319 R_PrecacheTexture(glt);
1329 rtexture_t *R_LoadTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, byte *data, int textype, int flags)
1333 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1334 textypeinfo_t *texinfo;
1337 if (cls.state == ca_dedicated)
1340 texinfo = R_GetTexTypeInfo(textype, flags);
1343 // if (data == NULL)
1344 // Host_Error("R_LoadTexture: \"%s\" has no data\n", identifier);
1346 if (flags & TEXF_FRAGMENT)
1348 if (width > block_size || height > block_size)
1349 Host_Error("R_LoadTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1350 if ((width * texinfo->internalbytesperpixel) & 3)
1351 Host_Error("R_LoadTexture: incompatible width for fragment");
1354 // clear the alpha flag if the texture has no transparent pixels
1357 case TEXTYPE_QPALETTE:
1358 if (flags & TEXF_ALPHA)
1360 flags &= ~TEXF_ALPHA;
1361 for (i = 0;i < width * height;i++)
1365 flags |= TEXF_ALPHA;
1372 if (flags & TEXF_ALPHA)
1373 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1376 if (flags & TEXF_ALPHA)
1378 flags &= ~TEXF_ALPHA;
1379 for (i = 0;i < width * height;i++)
1381 if (data[i * 4 + 3] < 255)
1383 flags |= TEXF_ALPHA;
1390 Host_Error("R_LoadTexture: unknown texture type\n");
1393 // LordHavoc: do a CRC to confirm the data really is the same as previous occurances.
1397 crc = CRC_Block(data, width*height*texinfo->inputbytesperpixel);
1399 // see if the texture is already present
1400 if (identifier && (glt = R_FindTexture(pool, identifier)))
1402 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)
1404 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1405 return (rtexture_t *)glt; // exact match, use existing
1407 Con_Printf("R_LoadTexture: cache mismatch on %s, replacing old texture\n", identifier);
1411 return (rtexture_t *)R_SetupTexture(pool, identifier, crc, width, height, flags | GLTEXF_UPLOAD, texinfo, data, NULL, NULL, 0);
1414 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)
1417 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1418 textypeinfo_t *texinfo;
1420 if (cls.state == ca_dedicated)
1423 texinfo = R_GetTexTypeInfo(textype, flags);
1425 // no function is supported, for odd uses
1426 // if (generate == NULL)
1427 // Host_Error("R_ProceduralTexture: \"%s\" has no generate function\n", identifier);
1428 if (flags & TEXF_FRAGMENT)
1430 if (width > block_size || height > block_size)
1431 Host_Error("R_ProceduralTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1432 if ((width * texinfo->internalbytesperpixel) & 3)
1433 Host_Error("R_ProceduralTexture: incompatible width for fragment");
1436 // see if the texture is already present
1437 if (identifier && (glt = R_FindTexture(pool, identifier)))
1439 if (width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
1441 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1442 return (rtexture_t *)glt; // exact match, use existing
1444 Con_DPrintf("R_LoadTexture: cache mismatch, replacing old texture\n");
1448 return (rtexture_t *)R_SetupTexture(pool, identifier, 0, width, height, flags | GLTEXF_PROCEDURAL | GLTEXF_UPLOAD, texinfo, NULL, generate, proceduraldata, proceduraldatasize);
1451 int R_TextureHasAlpha(rtexture_t *rt)
1456 glt = (gltexture_t *)rt;
1457 return (glt->flags & TEXF_ALPHA) != 0;
1460 int R_TextureWidth(rtexture_t *rt)
1464 return ((gltexture_t *)rt)->width;
1467 int R_TextureHeight(rtexture_t *rt)
1471 return ((gltexture_t *)rt)->height;
1474 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1477 float iwidth, iheight;
1478 if (cls.state == ca_dedicated)
1484 if (fx1 || fy1 || fx2 || fy2)
1498 Host_Error("R_FragmentLocation: no texture supplied\n");
1499 glt = (gltexture_t *)rt;
1500 if (glt->flags & TEXF_FRAGMENT)
1506 if (fx1 || fy1 || fx2 || fy2)
1508 iwidth = 1.0f / glt->image->width;
1509 iheight = 1.0f / glt->image->height;
1511 *fx1 = glt->x * iwidth;
1513 *fy1 = glt->y * iheight;
1515 *fx2 = (glt->x + glt->width) * iwidth;
1517 *fy2 = (glt->y + glt->height) * iheight;
1526 if (fx1 || fy1 || fx2 || fy2)
1540 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1542 textypeinfo_t *texinfo = R_GetTexTypeInfo(textype, flags);
1543 while ((width * texinfo->internalbytesperpixel) & 3)
1548 void R_UpdateTexture(rtexture_t *rt, byte *data)
1552 Host_Error("R_UpdateTexture: no texture supplied\n");
1554 Host_Error("R_UpdateTexture: no data supplied\n");
1555 glt = (gltexture_t *)rt;
1557 if (!(glt->flags & GLTEXF_PROCEDURAL))
1559 if (glt->inputtexels == NULL)
1561 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * glt->textype->inputbytesperpixel);
1562 if (glt->inputtexels == NULL)
1563 Host_Error("R_UpdateTexture: ran out of memory\n");
1565 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1567 R_Upload(glt, data);
1569 // if it has not been uploaded yet, update the data that will be used when it is
1570 if (glt->inputtexels)
1571 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1573 R_Upload(glt, data);