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 qbyte *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)(qbyte *buffer, int width, int height, void *parameterdata, int parameterdatasize);
97 // data provided to generate, persistent from call to call
98 qbyte *proceduraldata;
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 qbyte *resamplerow1 = NULL, *resamplerow2 = NULL;
122 static int resamplerowsize = 0;
123 static qbyte *resizebuffer = NULL, *colorconvertbuffer;
124 static int resizebuffersize = 0;
125 static qbyte *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;
212 Host_Error("R_FreeTexture: texture == NULL\n");
214 for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
215 if (*gltpointer == glt)
216 *gltpointer = glt->chain;
218 Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
220 // note: if freeing a fragment texture, this will not make the claimed
221 // space available for new textures unless all other fragments in the
222 // image are also freed
224 image->texturecount--;
225 if (image->texturecount < 1)
227 for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
228 if (*gltimagepointer == image)
229 *gltimagepointer = image->imagechain;
231 Host_Error("R_FreeTexture: image not linked in pool\n");
234 texnum = image->texnum;
235 gltexnuminuse[image->texnum] = 0;
236 glDeleteTextures(1, &texnum);
238 if (image->blockallocation)
239 Mem_Free(image->blockallocation);
244 Mem_Free(glt->identifier);
245 if (glt->inputtexels)
246 Mem_Free(glt->inputtexels);
247 if (glt->proceduraldata)
248 Mem_Free(glt->proceduraldata);
252 static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
259 for (glt = pool->gltchain;glt;glt = glt->chain)
260 if (glt->identifier && !strcmp (identifier, glt->identifier))
266 rtexturepool_t *R_AllocTexturePool(void)
268 gltexturepool_t *pool;
269 if (texturemempool == NULL)
271 pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
274 //memset(pool, 0, sizeof(gltexturepool_t));
275 pool->next = gltexturepoolchain;
276 gltexturepoolchain = pool;
277 pool->sentinel = TEXTUREPOOL_SENTINEL;
278 return (rtexturepool_t *)pool;
281 void R_FreeTexturePool(rtexturepool_t **rtexturepool)
283 gltexturepool_t *pool, **poolpointer;
284 if (rtexturepool == NULL)
286 if (*rtexturepool == NULL)
288 pool = (gltexturepool_t *)(*rtexturepool);
289 *rtexturepool = NULL;
290 if (pool->sentinel != TEXTUREPOOL_SENTINEL)
291 Host_Error("R_FreeTexturePool: pool already freed\n");
292 for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
293 if (*poolpointer == pool)
294 *poolpointer = pool->next;
296 Host_Error("R_FreeTexturePool: pool not linked\n");
297 while (pool->gltchain)
298 R_FreeTexture(pool->gltchain);
299 if (pool->imagechain)
300 Sys_Error("R_FreeTexturePool: not all images freed\n");
308 int minification, magnification;
312 static glmode_t modes[] =
314 {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
315 {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
316 {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
317 {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
318 {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
319 {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
322 static void GL_TextureMode_f (void)
325 gltextureimage_t *image;
326 gltexturepool_t *pool;
330 for (i = 0;i < 6;i++)
332 if (gl_filter_min == modes[i].minification)
334 Con_Printf ("%s\n", modes[i].name);
338 Con_Printf ("current filter is unknown???\n");
342 for (i = 0;i < 6;i++)
343 if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
347 Con_Printf ("bad filter name\n");
351 gl_filter_min = modes[i].minification;
352 gl_filter_mag = modes[i].magnification;
354 // change all the existing mipmap texture objects
355 // FIXME: force renderer(/client/something?) restart instead?
356 for (pool = gltexturepoolchain;pool;pool = pool->next)
358 for (image = pool->imagechain;image;image = image->imagechain)
360 // only update already uploaded images
361 if (!(image->flags & GLTEXF_UPLOAD))
363 glBindTexture(GL_TEXTURE_2D, image->texnum);
364 if (image->flags & TEXF_MIPMAP)
365 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
367 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
368 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
374 static int R_CalcTexelDataSize (gltexture_t *glt)
376 int width2, height2, size;
377 if (glt->flags & TEXF_FRAGMENT)
378 size = glt->width * glt->height;
381 if (r_max_size.integer > realmaxsize)
382 Cvar_SetValue("r_max_size", realmaxsize);
383 // calculate final size
384 for (width2 = 1;width2 < glt->width;width2 <<= 1);
385 for (height2 = 1;height2 < glt->height;height2 <<= 1);
386 for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
387 for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
388 if (width2 < 1) width2 = 1;
389 if (height2 < 1) height2 = 1;
392 if (glt->flags & TEXF_MIPMAP)
394 while (width2 > 1 || height2 > 1)
396 size += width2 * height2;
402 size++; // count the last 1x1 mipmap
405 size = width2*height2;
407 size *= glt->textype->internalbytesperpixel;
412 void R_TextureStats_PrintTotal(void)
414 int glsize, inputsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
416 gltexturepool_t *pool;
417 for (pool = gltexturepoolchain;pool;pool = pool->next)
419 for (glt = pool->gltchain;glt;glt = glt->chain)
421 glsize = R_CalcTexelDataSize(glt);
422 inputsize = glt->width * glt->height * glt->textype->inputbytesperpixel;
427 if (!(glt->flags & GLTEXF_UPLOAD))
431 loadedp += inputsize;
435 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);
438 static void R_TextureStats_f(void)
442 gltexturepool_t *pool;
443 Con_Printf("glsize input crc loaded mip alpha name\n");
444 for (pool = gltexturepoolchain;pool;pool = pool->next)
446 for (glt = pool->gltchain;glt;glt = glt->chain)
448 loaded = !(glt->flags & GLTEXF_UPLOAD);
449 if (glt->flags & GLTEXF_PROCEDURAL)
450 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>");
452 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>");
454 Con_Printf("pool %10p\n", pool);
456 R_TextureStats_PrintTotal();
459 char engineversion[40];
461 static void r_textures_start(void)
463 // deal with size limits of various drivers (3dfx in particular)
464 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
467 // use the largest scrap texture size we can (not sure if this is really a good idea)
468 for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
470 texturemempool = Mem_AllocPool("Texture Info");
471 texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
472 textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
473 gltexnuminuse = Mem_Alloc(texturemempool, MAX_GLTEXTURES);
474 //memset(gltexnuminuse, 0, MAX_GLTEXTURES);
477 static void r_textures_shutdown(void)
479 rtexturepool_t *temp;
480 while(gltexturepoolchain)
482 temp = (rtexturepool_t *) gltexturepoolchain;
483 R_FreeTexturePool(&temp);
487 if (resizebuffer) Mem_Free(resizebuffer);resizebuffer = NULL;
488 if (colorconvertbuffer) Mem_Free(colorconvertbuffer);colorconvertbuffer = NULL;
489 if (resamplerow1) Mem_Free(resamplerow1);resamplerow1 = NULL;
490 if (resamplerow2) Mem_Free(resamplerow2);resamplerow2 = NULL;
491 if (texturebuffer) Mem_Free(texturebuffer);texturebuffer = NULL;
492 if (gltexnuminuse) Mem_Free(gltexnuminuse);gltexnuminuse = NULL;
494 resizebuffersize = 0;
496 texturebuffersize = 0;
498 colorconvertbuffer = NULL;
501 texturebuffer = NULL;
502 gltexnuminuse = NULL;
503 Mem_FreePool(&texturemempool);
504 Mem_FreePool(&texturedatamempool);
505 Mem_FreePool(&textureprocessingmempool);
508 static void r_textures_newmap(void)
512 void R_Textures_Init (void)
514 Cmd_AddCommand ("gl_texturemode", &GL_TextureMode_f);
515 Cmd_AddCommand("r_texturestats", R_TextureStats_f);
516 Cvar_RegisterVariable (&r_max_scrapsize);
517 Cvar_RegisterVariable (&r_max_size);
518 Cvar_RegisterVariable (&r_picmip);
519 Cvar_RegisterVariable (&r_lerpimages);
520 Cvar_RegisterVariable (&r_precachetextures);
521 gltexnuminuse = NULL;
523 R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
526 static void R_ResampleTextureLerpLine (qbyte *in, qbyte *out, int inwidth, int outwidth, int bytesperpixel)
528 int j, xi, oldx = 0, f, fstep, endx, lerp;
529 fstep = (int) (inwidth*65536.0f/outwidth);
531 if (bytesperpixel == 4)
533 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
538 in += (xi - oldx) * 4;
544 *out++ = (qbyte) ((((in[4] - in[0]) * lerp) >> 16) + in[0]);
545 *out++ = (qbyte) ((((in[5] - in[1]) * lerp) >> 16) + in[1]);
546 *out++ = (qbyte) ((((in[6] - in[2]) * lerp) >> 16) + in[2]);
547 *out++ = (qbyte) ((((in[7] - in[3]) * lerp) >> 16) + in[3]);
549 else // last pixel of the line has no pixel to lerp to
558 else if (bytesperpixel == 3)
560 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
565 in += (xi - oldx) * 3;
571 *out++ = (qbyte) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
572 *out++ = (qbyte) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
573 *out++ = (qbyte) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
575 else // last pixel of the line has no pixel to lerp to
584 Sys_Error("R_ResampleTextureLerpLine: unsupported bytesperpixel %i\n", bytesperpixel);
592 static void R_ResampleTexture (void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight, int bytesperpixel)
594 if (resamplerowsize < outwidth*4)
597 Mem_Free(resamplerow1);
599 Mem_Free(resamplerow2);
600 resamplerowsize = outwidth*4;
601 resamplerow1 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
602 resamplerow2 = Mem_Alloc(textureprocessingmempool, resamplerowsize);
604 #define row1 resamplerow1
605 #define row2 resamplerow2
606 if (bytesperpixel == 4)
608 if (r_lerpimages.integer)
610 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth4 = inwidth*4, outwidth4 = outwidth*4;
613 fstep = (int) (inheight*65536.0f/outheight);
617 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
618 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
619 for (i = 0, f = 0;i < outheight;i++,f += fstep)
627 inrow = (qbyte *)indata + inwidth4*yi;
629 memcpy(row1, row2, outwidth4);
631 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
632 R_ResampleTextureLerpLine (inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel);
638 #define LERPBYTE(i) out[i] = (qbyte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
691 inrow = (qbyte *)indata + inwidth4*yi;
693 memcpy(row1, row2, outwidth4);
695 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
698 memcpy(out, row1, outwidth4);
705 unsigned frac, fracstep;
706 // relies on int being 4 bytes
710 fracstep = inwidth*0x10000/outwidth;
711 for (i = 0;i < outheight;i++)
713 inrow = (int *)indata + inwidth*(i*inheight/outheight);
714 frac = fracstep >> 1;
718 out[0] = inrow[frac >> 16];frac += fracstep;
719 out[1] = inrow[frac >> 16];frac += fracstep;
720 out[2] = inrow[frac >> 16];frac += fracstep;
721 out[3] = inrow[frac >> 16];frac += fracstep;
727 out[0] = inrow[frac >> 16];frac += fracstep;
728 out[1] = inrow[frac >> 16];frac += fracstep;
733 out[0] = inrow[frac >> 16];frac += fracstep;
739 else if (bytesperpixel == 3)
741 if (r_lerpimages.integer)
743 int i, j, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
746 fstep = (int) (inheight*65536.0f/outheight);
750 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
751 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
752 for (i = 0, f = 0;i < outheight;i++,f += fstep)
760 inrow = (qbyte *)indata + inwidth3*yi;
762 memcpy(row1, row2, outwidth3);
764 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
765 R_ResampleTextureLerpLine (inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel);
771 #define LERPBYTE(i) out[i] = (qbyte) ((((row2[i] - row1[i]) * lerp) >> 16) + row1[i])
817 inrow = (qbyte *)indata + inwidth3*yi;
819 memcpy(row1, row2, outwidth3);
821 R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth, bytesperpixel);
824 memcpy(out, row1, outwidth3);
830 int i, j, f, inwidth3 = inwidth * 3;
831 unsigned frac, fracstep;
835 fracstep = inwidth*0x10000/outwidth;
836 for (i = 0;i < outheight;i++)
838 inrow = (qbyte *)indata + inwidth3*(i*inheight/outheight);
839 frac = fracstep >> 1;
843 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
844 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
845 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;
851 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;
857 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
864 Sys_Error("R_ResampleTexture: unsupported bytesperpixel %i\n", bytesperpixel);
869 // in can be the same as out
870 static void R_MipReduce(qbyte *in, qbyte *out, int *width, int *height, int destwidth, int destheight, int bytesperpixel)
873 nextrow = *width * bytesperpixel;
874 if (*width > destwidth)
877 if (*height > destheight)
881 if (bytesperpixel == 4)
883 for (y = 0;y < *height;y++)
885 for (x = 0;x < *width;x++)
887 out[0] = (qbyte) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
888 out[1] = (qbyte) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
889 out[2] = (qbyte) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
890 out[3] = (qbyte) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
894 in += nextrow; // skip a line
897 else if (bytesperpixel == 3)
899 for (y = 0;y < *height;y++)
901 for (x = 0;x < *width;x++)
903 out[0] = (qbyte) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
904 out[1] = (qbyte) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
905 out[2] = (qbyte) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
909 in += nextrow; // skip a line
913 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
918 if (bytesperpixel == 4)
920 for (y = 0;y < *height;y++)
922 for (x = 0;x < *width;x++)
924 out[0] = (qbyte) ((in[0] + in[4]) >> 1);
925 out[1] = (qbyte) ((in[1] + in[5]) >> 1);
926 out[2] = (qbyte) ((in[2] + in[6]) >> 1);
927 out[3] = (qbyte) ((in[3] + in[7]) >> 1);
933 else if (bytesperpixel == 3)
935 for (y = 0;y < *height;y++)
937 for (x = 0;x < *width;x++)
939 out[0] = (qbyte) ((in[0] + in[3]) >> 1);
940 out[1] = (qbyte) ((in[1] + in[4]) >> 1);
941 out[2] = (qbyte) ((in[2] + in[5]) >> 1);
948 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
953 if (*height > destheight)
957 if (bytesperpixel == 4)
959 for (y = 0;y < *height;y++)
961 for (x = 0;x < *width;x++)
963 out[0] = (qbyte) ((in[0] + in[nextrow ]) >> 1);
964 out[1] = (qbyte) ((in[1] + in[nextrow+1]) >> 1);
965 out[2] = (qbyte) ((in[2] + in[nextrow+2]) >> 1);
966 out[3] = (qbyte) ((in[3] + in[nextrow+3]) >> 1);
970 in += nextrow; // skip a line
973 else if (bytesperpixel == 3)
975 for (y = 0;y < *height;y++)
977 for (x = 0;x < *width;x++)
979 out[0] = (qbyte) ((in[0] + in[nextrow ]) >> 1);
980 out[1] = (qbyte) ((in[1] + in[nextrow+1]) >> 1);
981 out[2] = (qbyte) ((in[2] + in[nextrow+2]) >> 1);
985 in += nextrow; // skip a line
989 Sys_Error("R_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
992 Sys_Error("R_MipReduce: desired size already achieved\n");
996 static void R_Upload(gltexture_t *glt, qbyte *data)
998 int mip, width, height, internalformat;
1002 glBindTexture(GL_TEXTURE_2D, glt->image->texnum);
1005 glt->flags &= ~GLTEXF_UPLOAD;
1007 if (glt->flags & TEXF_FRAGMENT)
1009 if (resizebuffersize < glt->image->width * glt->image->height * glt->image->bytesperpixel)
1011 resizebuffersize = glt->image->width * glt->image->height * glt->image->bytesperpixel;
1013 Mem_Free(resizebuffer);
1014 if (colorconvertbuffer)
1015 Mem_Free(colorconvertbuffer);
1016 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1017 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1018 if (!resizebuffer || !colorconvertbuffer)
1019 Host_Error("R_Upload: out of memory\n");
1022 if (glt->image->flags & GLTEXF_UPLOAD)
1024 Con_DPrintf("uploaded new fragments image\n");
1025 glt->image->flags &= ~GLTEXF_UPLOAD;
1026 memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->bytesperpixel);
1027 glTexImage2D (GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
1029 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1031 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1035 if (prevbuffer == NULL)
1037 memset(resizebuffer, 255, glt->width * glt->height * glt->image->bytesperpixel);
1038 prevbuffer = resizebuffer;
1040 else if (glt->textype->textype == TEXTYPE_QPALETTE)
1042 // promote paletted to RGBA, so we only have to worry about RGB and
1043 // RGBA in the rest of this code
1044 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1045 prevbuffer = colorconvertbuffer;
1048 glTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1053 glt->image->flags &= ~GLTEXF_UPLOAD;
1055 // these are rounded up versions of the size to do better resampling
1056 for (width = 1;width < glt->width;width <<= 1);
1057 for (height = 1;height < glt->height;height <<= 1);
1059 if (resizebuffersize < width * height * glt->image->bytesperpixel)
1061 resizebuffersize = width * height * glt->image->bytesperpixel;
1063 Mem_Free(resizebuffer);
1064 if (colorconvertbuffer)
1065 Mem_Free(colorconvertbuffer);
1066 resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1067 colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
1068 if (!resizebuffer || !colorconvertbuffer)
1069 Host_Error("R_Upload: out of memory\n");
1072 if (prevbuffer == NULL)
1074 width = glt->image->width;
1075 height = glt->image->height;
1076 memset(resizebuffer, 255, width * height * glt->image->bytesperpixel);
1077 prevbuffer = resizebuffer;
1081 if (glt->textype->textype == TEXTYPE_QPALETTE)
1083 // promote paletted to RGBA, so we only have to worry about RGB and
1084 // RGBA in the rest of this code
1085 Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
1086 prevbuffer = colorconvertbuffer;
1089 if (glt->width != width || glt->height != height)
1091 R_ResampleTexture(prevbuffer, glt->width, glt->height, resizebuffer, width, height, glt->image->bytesperpixel);
1092 prevbuffer = resizebuffer;
1095 // apply picmip/max_size limitations
1096 while (width > glt->image->width || height > glt->image->height)
1098 R_MipReduce(prevbuffer, resizebuffer, &width, &height, glt->image->width, glt->image->height, glt->image->bytesperpixel);
1099 prevbuffer = resizebuffer;
1103 // 3 and 4 are converted by the driver to it's preferred format for the current display mode
1105 if (glt->flags & TEXF_ALPHA)
1109 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1111 if (glt->flags & TEXF_MIPMAP)
1113 while (width > 1 || height > 1)
1115 R_MipReduce(prevbuffer, resizebuffer, &width, &height, 1, 1, glt->image->bytesperpixel);
1116 prevbuffer = resizebuffer;
1118 glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
1122 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
1124 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1129 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
1131 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
1136 static void R_FindImageForTexture(gltexture_t *glt)
1138 int i, j, best, best2, x, y, w, h;
1139 textypeinfo_t *texinfo;
1140 gltexturepool_t *pool;
1141 gltextureimage_t *image, **imagechainpointer;
1142 texinfo = glt->textype;
1149 if (glt->flags & TEXF_FRAGMENT)
1151 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
1153 image = *imagechainpointer;
1154 if (image->type != GLIMAGETYPE_FRAGMENTS)
1156 if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
1159 // got a fragments texture, find a place in it if we can
1161 for (best = block_size, i = 0;i < block_size - w;i += texinfo->align)
1163 for (best2 = 0, j = 0;j < w;j++)
1165 if (image->blockallocation[i+j] >= best)
1167 if (best2 < image->blockallocation[i+j])
1168 best2 = image->blockallocation[i+j];
1172 // this is a valid spot
1178 if (best + h > block_size)
1181 for (i = 0;i < w;i++)
1182 image->blockallocation[x + i] = best + h;
1187 image->texturecount++;
1191 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1193 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1194 //memset(image, 0, sizeof(*image));
1195 image->type = GLIMAGETYPE_FRAGMENTS;
1196 image->width = block_size;
1197 image->height = block_size;
1198 image->blockallocation = Mem_Alloc(texturemempool, block_size * sizeof(short));
1199 memset(image->blockallocation, 0, block_size * sizeof(short));
1203 for (i = 0;i < w;i++)
1204 image->blockallocation[x + i] = y + h;
1208 for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
1210 image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
1212 Sys_Error("R_FindImageForTexture: ran out of memory\n");
1213 //memset(image, 0, sizeof(*image));
1214 image->type = GLIMAGETYPE_TILE;
1215 image->blockallocation = NULL;
1217 // calculate final size
1218 if (r_max_size.integer > realmaxsize)
1219 Cvar_SetValue("r_max_size", realmaxsize);
1220 for (image->width = 1;image->width < glt->width;image->width <<= 1);
1221 for (image->height = 1;image->height < glt->height;image->height <<= 1);
1222 for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
1223 for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
1224 if (image->width < 1) image->width = 1;
1225 if (image->height < 1) image->height = 1;
1227 image->glinternalformat = texinfo->glinternalformat;
1228 image->glformat = texinfo->glformat;
1229 image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA)) | GLTEXF_UPLOAD;
1230 image->bytesperpixel = texinfo->internalbytesperpixel;
1231 for (i = 1;i < MAX_GLTEXTURES;i++)
1232 if (!gltexnuminuse[i])
1234 if (i < MAX_GLTEXTURES)
1235 gltexnuminuse[image->texnum = i] = true;
1237 Sys_Error("R_FindImageForTexture: ran out of GL textures\n");
1238 *imagechainpointer = image;
1239 image->texturecount++;
1246 // note: R_FindImageForTexture must be called before this
1247 static void R_UploadTexture (gltexture_t *glt)
1249 if (!(glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL)))
1252 if (glt->flags & GLTEXF_PROCEDURAL)
1256 if (texturebuffersize < glt->width * glt->height * glt->textype->inputbytesperpixel)
1259 Mem_Free(texturebuffer);
1260 texturebuffersize = glt->width * glt->height * glt->textype->inputbytesperpixel;
1261 texturebuffer = Mem_Alloc(textureprocessingmempool, texturebuffersize);
1264 glt->generate(texturebuffer, glt->width, glt->height, (void *)glt->proceduraldata, glt->proceduraldatasize);
1269 R_Upload(glt, glt->inputtexels);
1270 if (glt->inputtexels)
1272 Mem_Free(glt->inputtexels);
1273 glt->inputtexels = NULL;
1274 glt->flags |= GLTEXF_DESTROYED;
1276 else if (glt->flags & GLTEXF_DESTROYED)
1277 Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed. Can not upload original image again. Uploaded blank texture.\n", glt->identifier);
1281 static gltexture_t *R_SetupTexture(gltexturepool_t *pool, char *identifier, int crc, int width, int height, int flags, textypeinfo_t *texinfo, qbyte *data, int (*generate)(qbyte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
1284 glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
1285 //memset(glt, 0, sizeof(gltexture_t));
1288 glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
1289 strcpy (glt->identifier, identifier);
1292 glt->identifier = NULL;
1294 glt->chain = pool->gltchain;
1295 pool->gltchain = glt;
1298 glt->height = height;
1300 glt->textype = texinfo;
1304 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * texinfo->inputbytesperpixel);
1305 if (glt->inputtexels == NULL)
1306 Sys_Error("R_SetupTexture: out of memory\n");
1307 memcpy(glt->inputtexels, data, glt->width * glt->height * texinfo->inputbytesperpixel);
1310 glt->inputtexels = NULL;
1312 glt->generate = generate;
1313 glt->proceduraldatasize = proceduraldatasize;
1314 if (proceduraldatasize)
1316 glt->proceduraldata = Mem_Alloc(texturemempool, proceduraldatasize);
1317 if (glt->proceduraldata == NULL)
1318 Sys_Error("R_SetupTexture: out of memory\n");
1321 glt->proceduraldata = NULL;
1323 R_FindImageForTexture(glt);
1324 R_PrecacheTexture(glt);
1334 rtexture_t *R_LoadTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, qbyte *data, int textype, int flags)
1338 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1339 textypeinfo_t *texinfo;
1342 if (cls.state == ca_dedicated)
1345 texinfo = R_GetTexTypeInfo(textype, flags);
1348 // if (data == NULL)
1349 // Host_Error("R_LoadTexture: \"%s\" has no data\n", identifier);
1351 if (flags & TEXF_FRAGMENT)
1353 if (width > block_size || height > block_size)
1354 Host_Error("R_LoadTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1355 if ((width * texinfo->internalbytesperpixel) & 3)
1356 Host_Error("R_LoadTexture: incompatible width for fragment");
1359 // clear the alpha flag if the texture has no transparent pixels
1362 case TEXTYPE_QPALETTE:
1363 if (flags & TEXF_ALPHA)
1365 flags &= ~TEXF_ALPHA;
1366 for (i = 0;i < width * height;i++)
1370 flags |= TEXF_ALPHA;
1377 if (flags & TEXF_ALPHA)
1378 Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
1381 if (flags & TEXF_ALPHA)
1383 flags &= ~TEXF_ALPHA;
1384 for (i = 0;i < width * height;i++)
1386 if (data[i * 4 + 3] < 255)
1388 flags |= TEXF_ALPHA;
1395 Host_Error("R_LoadTexture: unknown texture type\n");
1398 // LordHavoc: do a CRC to confirm the data really is the same as previous occurances.
1402 crc = CRC_Block(data, width*height*texinfo->inputbytesperpixel);
1404 // see if the texture is already present
1405 if (identifier && (glt = R_FindTexture(pool, identifier)))
1407 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)
1409 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1410 return (rtexture_t *)glt; // exact match, use existing
1412 Con_Printf("R_LoadTexture: cache mismatch on %s, replacing old texture\n", identifier);
1416 return (rtexture_t *)R_SetupTexture(pool, identifier, crc, width, height, flags | GLTEXF_UPLOAD, texinfo, data, NULL, NULL, 0);
1419 rtexture_t *R_ProceduralTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, int textype, int flags, int (*generate)(qbyte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
1422 gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
1423 textypeinfo_t *texinfo;
1425 if (cls.state == ca_dedicated)
1428 texinfo = R_GetTexTypeInfo(textype, flags);
1430 // no function is supported, for odd uses
1431 // if (generate == NULL)
1432 // Host_Error("R_ProceduralTexture: \"%s\" has no generate function\n", identifier);
1433 if (flags & TEXF_FRAGMENT)
1435 if (width > block_size || height > block_size)
1436 Host_Error("R_ProceduralTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
1437 if ((width * texinfo->internalbytesperpixel) & 3)
1438 Host_Error("R_ProceduralTexture: incompatible width for fragment");
1441 // see if the texture is already present
1442 if (identifier && (glt = R_FindTexture(pool, identifier)))
1444 if (width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
1446 Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
1447 return (rtexture_t *)glt; // exact match, use existing
1449 Con_Printf("R_LoadTexture: cache mismatch, replacing old texture\n");
1453 return (rtexture_t *)R_SetupTexture(pool, identifier, 0, width, height, flags | GLTEXF_PROCEDURAL | GLTEXF_UPLOAD, texinfo, NULL, generate, proceduraldata, proceduraldatasize);
1456 int R_TextureHasAlpha(rtexture_t *rt)
1461 glt = (gltexture_t *)rt;
1462 return (glt->flags & TEXF_ALPHA) != 0;
1465 int R_TextureWidth(rtexture_t *rt)
1469 return ((gltexture_t *)rt)->width;
1472 int R_TextureHeight(rtexture_t *rt)
1476 return ((gltexture_t *)rt)->height;
1479 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
1482 float iwidth, iheight;
1483 if (cls.state == ca_dedicated)
1489 if (fx1 || fy1 || fx2 || fy2)
1503 Host_Error("R_FragmentLocation: no texture supplied\n");
1504 glt = (gltexture_t *)rt;
1505 if (glt->flags & TEXF_FRAGMENT)
1511 if (fx1 || fy1 || fx2 || fy2)
1513 iwidth = 1.0f / glt->image->width;
1514 iheight = 1.0f / glt->image->height;
1516 *fx1 = glt->x * iwidth;
1518 *fy1 = glt->y * iheight;
1520 *fx2 = (glt->x + glt->width) * iwidth;
1522 *fy2 = (glt->y + glt->height) * iheight;
1531 if (fx1 || fy1 || fx2 || fy2)
1545 int R_CompatibleFragmentWidth(int width, int textype, int flags)
1547 textypeinfo_t *texinfo = R_GetTexTypeInfo(textype, flags);
1548 while ((width * texinfo->internalbytesperpixel) & 3)
1553 void R_UpdateTexture(rtexture_t *rt, qbyte *data)
1557 Host_Error("R_UpdateTexture: no texture supplied\n");
1559 Host_Error("R_UpdateTexture: no data supplied\n");
1560 glt = (gltexture_t *)rt;
1562 if (!(glt->flags & GLTEXF_PROCEDURAL))
1564 if (glt->inputtexels == NULL)
1566 glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * glt->textype->inputbytesperpixel);
1567 if (glt->inputtexels == NULL)
1568 Host_Error("R_UpdateTexture: ran out of memory\n");
1570 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1572 R_Upload(glt, data);
1574 // if it has not been uploaded yet, update the data that will be used when it is
1575 if (glt->inputtexels)
1576 memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
1578 R_Upload(glt, data);