10 void Image_GammaRemapRGB(const qbyte *in, qbyte *out, int pixels, const qbyte *gammar, const qbyte *gammag, const qbyte *gammab)
14 out[0] = gammar[in[0]];
15 out[1] = gammag[in[1]];
16 out[2] = gammab[in[2]];
22 // note: pal must be 32bit color
23 void Image_Copy8bitRGBA(const qbyte *in, qbyte *out, int pixels, const unsigned int *pal)
25 int *iout = (void *)out;
61 =================================================================
65 =================================================================
74 unsigned short xmin,ymin,xmax,ymax;
75 unsigned short hres,vres;
76 unsigned char palette[48];
79 unsigned short bytes_per_line;
80 unsigned short palette_type;
89 qbyte* LoadPCX (qbyte *f, int matchwidth, int matchheight)
92 qbyte *a, *b, *image_rgba, *pbuf;
93 const qbyte *palette, *fin, *enddata;
94 int x, y, x2, dataByte;
96 if (fs_filesize < (int)sizeof(pcx) + 768)
98 Con_Printf ("Bad pcx file\n");
104 memcpy(&pcx, fin, sizeof(pcx));
107 // LordHavoc: big-endian support ported from QF newtree
108 pcx.xmax = LittleShort (pcx.xmax);
109 pcx.xmin = LittleShort (pcx.xmin);
110 pcx.ymax = LittleShort (pcx.ymax);
111 pcx.ymin = LittleShort (pcx.ymin);
112 pcx.hres = LittleShort (pcx.hres);
113 pcx.vres = LittleShort (pcx.vres);
114 pcx.bytes_per_line = LittleShort (pcx.bytes_per_line);
115 pcx.palette_type = LittleShort (pcx.palette_type);
117 image_width = pcx.xmax + 1 - pcx.xmin;
118 image_height = pcx.ymax + 1 - pcx.ymin;
119 if (pcx.manufacturer != 0x0a || pcx.version != 5 || pcx.encoding != 1 || pcx.bits_per_pixel != 8 || image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
121 Con_Printf ("Bad pcx file\n");
124 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
127 palette = f + fs_filesize - 768;
129 image_rgba = Mem_Alloc(tempmempool, image_width*image_height*4);
132 Con_Printf("LoadPCX: not enough memory for %i by %i image\n", image_width, image_height);
135 pbuf = image_rgba + image_width*image_height*3;
138 for (y = 0;y < image_height && fin < enddata;y++)
140 a = pbuf + y * image_width;
141 for (x = 0;x < image_width && fin < enddata;)
148 x2 = x + (dataByte & 0x3F);
150 if (x2 > image_width)
151 x2 = image_width; // technically an error
158 fin += pcx.bytes_per_line - image_width; // the number of bytes per line is always forced to an even number
159 while(x < image_width)
166 for(x = 0;x < image_width*image_height;x++)
179 =========================================================
183 =========================================================
186 typedef struct _TargaHeader
188 unsigned char id_length, colormap_type, image_type;
189 unsigned short colormap_index, colormap_length;
190 unsigned char colormap_size;
191 unsigned short x_origin, y_origin, width, height;
192 unsigned char pixel_size, attributes;
196 void PrintTargaHeader(TargaHeader *t)
198 Con_Printf("TargaHeader:\n");
199 Con_Printf("uint8 id_length = %i;\n", t->id_length);
200 Con_Printf("uint8 colormap_type = %i;\n", t->colormap_type);
201 Con_Printf("uint8 image_type = %i;\n", t->image_type);
202 Con_Printf("uint16 colormap_index = %i;\n", t->colormap_index);
203 Con_Printf("uint16 colormap_length = %i;\n", t->colormap_length);
204 Con_Printf("uint8 colormap_size = %i;\n", t->colormap_size);
205 Con_Printf("uint16 x_origin = %i;\n", t->x_origin);
206 Con_Printf("uint16 y_origin = %i;\n", t->y_origin);
207 Con_Printf("uint16 width = %i;\n", t->width);
208 Con_Printf("uint16 height = %i;\n", t->height);
209 Con_Printf("uint8 pixel_size = %i;\n", t->pixel_size);
210 Con_Printf("uint8 attributes = %i;\n", t->attributes);
218 qbyte *LoadTGA (qbyte *f, int matchwidth, int matchheight)
220 int x, y, row_inc, compressed, readpixelcount, red, green, blue, alpha, runlen;
221 qbyte *pixbuf, *image_rgba;
222 qbyte *fin, *enddata;
223 TargaHeader targa_header;
224 unsigned char palette[256*4], *p;
226 if (fs_filesize < 19)
229 enddata = f + fs_filesize;
231 targa_header.id_length = f[0];
232 targa_header.colormap_type = f[1];
233 targa_header.image_type = f[2];
235 targa_header.colormap_index = f[3] + f[4] * 256;
236 targa_header.colormap_length = f[5] + f[6] * 256;
237 targa_header.colormap_size = f[7];
238 targa_header.x_origin = f[8] + f[9] * 256;
239 targa_header.y_origin = f[10] + f[11] * 256;
240 targa_header.width = image_width = f[12] + f[13] * 256;
241 targa_header.height = image_height = f[14] + f[15] * 256;
242 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
244 Con_Printf("LoadTGA: invalid size\n");
245 PrintTargaHeader(&targa_header);
248 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
250 targa_header.pixel_size = f[16];
251 targa_header.attributes = f[17];
254 if (targa_header.id_length != 0)
255 fin += targa_header.id_length; // skip TARGA image comment
256 if (targa_header.image_type == 2 || targa_header.image_type == 10)
258 if (targa_header.pixel_size != 24 && targa_header.pixel_size != 32)
260 Con_Printf ("LoadTGA: only 24bit and 32bit pixel sizes supported for type 2 and type 10 images\n");
261 PrintTargaHeader(&targa_header);
265 else if (targa_header.image_type == 1 || targa_header.image_type == 9)
267 if (targa_header.pixel_size != 8)
269 Con_Printf ("LoadTGA: only 8bit pixel size for type 1, 3, 9, and 11 images supported\n");
270 PrintTargaHeader(&targa_header);
273 if (targa_header.colormap_length != 256)
275 Con_Printf ("LoadTGA: only 256 colormap_length supported\n");
276 PrintTargaHeader(&targa_header);
279 if (targa_header.colormap_index)
281 Con_Printf ("LoadTGA: colormap_index not supported\n");
282 PrintTargaHeader(&targa_header);
285 if (targa_header.colormap_size == 24)
287 for (x = 0;x < targa_header.colormap_length;x++)
289 palette[x*4+2] = *fin++;
290 palette[x*4+1] = *fin++;
291 palette[x*4+0] = *fin++;
292 palette[x*4+3] = 255;
295 else if (targa_header.colormap_size == 32)
297 for (x = 0;x < targa_header.colormap_length;x++)
299 palette[x*4+2] = *fin++;
300 palette[x*4+1] = *fin++;
301 palette[x*4+0] = *fin++;
302 palette[x*4+3] = *fin++;
307 Con_Printf ("LoadTGA: Only 32 and 24 bit colormap_size supported\n");
308 PrintTargaHeader(&targa_header);
312 else if (targa_header.image_type == 3 || targa_header.image_type == 11)
314 if (targa_header.pixel_size != 8)
316 Con_Printf ("LoadTGA: only 8bit pixel size for type 1, 3, 9, and 11 images supported\n");
317 PrintTargaHeader(&targa_header);
323 Con_Printf ("LoadTGA: Only type 1, 2, 3, 9, 10, and 11 targa RGB images supported, image_type = %i\n", targa_header.image_type);
324 PrintTargaHeader(&targa_header);
328 if (targa_header.attributes & 0x10)
330 Con_Printf ("LoadTGA: origin must be in top left or bottom left, top right and bottom right are not supported\n");
334 image_rgba = Mem_Alloc(tempmempool, image_width * image_height * 4);
337 Con_Printf ("LoadTGA: not enough memory for %i by %i image\n", image_width, image_height);
341 // If bit 5 of attributes isn't set, the image has been stored from bottom to top
342 if ((targa_header.attributes & 0x20) == 0)
344 pixbuf = image_rgba + (image_height - 1)*image_width*4;
345 row_inc = -image_width*4*2;
353 compressed = targa_header.image_type == 9 || targa_header.image_type == 10 || targa_header.image_type == 11;
356 red = green = blue = alpha = 255;
357 while (y < image_height)
359 // decoder is mostly the same whether it's compressed or not
360 readpixelcount = 1000000;
362 if (compressed && fin < enddata)
365 // high bit indicates this is an RLE compressed run
368 runlen = 1 + (runlen & 0x7f);
371 while((runlen--) && y < image_height)
373 if (readpixelcount > 0)
376 red = green = blue = alpha = 255;
379 switch(targa_header.image_type)
384 p = palette + (*fin++) * 4;
398 if (targa_header.pixel_size == 32 && fin < enddata)
404 red = green = blue = *fin++;
414 if (x == image_width)
416 // end of line, advance to next
432 qbyte *LoadLMP (qbyte *f, int matchwidth, int matchheight)
438 Con_Printf("LoadLMP: invalid LMP file\n");
442 // parse the very complicated header *chuckle*
443 image_width = f[0] + f[1] * 256 + f[2] * 65536 + f[3] * 16777216;
444 image_height = f[4] + f[5] * 256 + f[6] * 65536 + f[7] * 16777216;
445 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
447 Con_Printf("LoadLMP: invalid size %ix%i\n", image_width, image_height);
450 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
453 if (fs_filesize < 8 + image_width * image_height)
455 Con_Printf("LoadLMP: invalid LMP file\n");
459 image_rgba = Mem_Alloc(tempmempool, image_width * image_height * 4);
462 Con_Printf("LoadLMP: not enough memory for %i by %i image\n", image_width, image_height);
465 Image_Copy8bitRGBA(f + 8, image_rgba, image_width * image_height, palette_complete);
472 unsigned width, height;
473 unsigned offsets[MIPLEVELS]; // four mip maps stored
474 char animname[32]; // next frame in animation chain
480 qbyte *LoadWAL (qbyte *f, int matchwidth, int matchheight)
483 const q2wal_t *inwal = (const void *)f;
485 if (fs_filesize < (int) sizeof(q2wal_t))
487 Con_Printf("LoadWAL: invalid WAL file\n");
491 image_width = LittleLong(inwal->width);
492 image_height = LittleLong(inwal->height);
493 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
495 Con_Printf("LoadWAL: invalid size %ix%i\n", image_width, image_height);
498 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
501 if ((int) fs_filesize < (int) sizeof(q2wal_t) + (int) LittleLong(inwal->offsets[0]) + image_width * image_height)
503 Con_Printf("LoadWAL: invalid WAL file\n");
507 image_rgba = Mem_Alloc(tempmempool, image_width * image_height * 4);
510 Con_Printf("LoadLMP: not enough memory for %i by %i image\n", image_width, image_height);
513 Image_Copy8bitRGBA(f + LittleLong(inwal->offsets[0]), image_rgba, image_width * image_height, palette_complete);
524 qbyte *LoadLMPAs8Bit (qbyte *f, int matchwidth, int matchheight)
530 Con_Printf("LoadLMPAs8Bit: invalid LMP file\n");
534 // parse the very complicated header *chuckle*
535 image_width = f[0] + f[1] * 256 + f[2] * 65536 + f[3] * 16777216;
536 image_height = f[4] + f[5] * 256 + f[6] * 65536 + f[7] * 16777216;
537 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
539 Con_Printf("LoadLMPAs8Bit: invalid size %ix%i\n", image_width, image_height);
542 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
545 if (fs_filesize < 8 + image_width * image_height)
547 Con_Printf("LoadLMPAs8Bit: invalid LMP file\n");
551 image_8bit = Mem_Alloc(tempmempool, image_width * image_height);
554 Con_Printf("LoadLMPAs8Bit: not enough memory for %i by %i image\n", image_width, image_height);
557 memcpy(image_8bit, f + 8, image_width * image_height);
561 void Image_StripImageExtension (const char *in, char *out)
563 const char *end, *temp;
564 end = in + strlen(in);
568 if (strcmp(temp, ".tga") == 0
569 || strcmp(temp, ".pcx") == 0
570 || strcmp(temp, ".lmp") == 0
571 || strcmp(temp, ".png") == 0
572 || strcmp(temp, ".jpg") == 0)
584 const char *formatstring;
585 qbyte *(*loadfunc)(qbyte *f, int matchwidth, int matchheight);
589 {"override/%s.tga", LoadTGA},
590 {"override/%s.jpg", JPEG_LoadImage},
591 {"textures/%s.tga", LoadTGA},
592 {"textures/%s.jpg", JPEG_LoadImage},
593 {"textures/%s.pcx", LoadPCX},
594 {"textures/%s.wal", LoadWAL},
596 {"%s.jpg", JPEG_LoadImage},
602 qbyte *loadimagepixels (const char *filename, qboolean complain, int matchwidth, int matchheight)
605 qbyte *f, *data = NULL;
606 char basename[MAX_QPATH], name[MAX_QPATH], *c;
607 Image_StripImageExtension(filename, basename); // strip filename extensions to allow replacement by other types
608 // replace *'s with #, so commandline utils don't get confused when dealing with the external files
609 for (c = basename;*c;c++)
612 for (i = 0;imageformats[i].formatstring;i++)
614 sprintf (name, imageformats[i].formatstring, basename);
615 if ((f = FS_LoadFile(name, true)) && (data = imageformats[i].loadfunc(f, matchwidth, matchheight)))
618 Con_DPrintf("loaded image %s (%dx%d)\n", name, image_width, image_height);
624 Con_Printf ("Couldn't load %s using ", filename);
625 for (i = 0;imageformats[i].formatstring;i++)
627 sprintf (name, imageformats[i].formatstring, basename);
628 Con_Printf (i == 0 ? "\"%s\"" : (imageformats[i+1].formatstring ? ", \"%s\"" : " or \"%s\".\n"), imageformats[i].formatstring);
634 int image_makemask (const qbyte *in, qbyte *out, int size)
638 for (i = 0;i < size;i++)
640 out[0] = out[1] = out[2] = 255;
650 qbyte* loadimagepixelsmask (const char *filename, qboolean complain, int matchwidth, int matchheight)
653 in = data = loadimagepixels(filename, complain, matchwidth, matchheight);
656 if (image_makemask(data, data, image_width * image_height))
657 return data; // some transparency
661 return NULL; // all opaque
665 rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags)
669 if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight)))
671 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
676 rtexture_t *loadtextureimagemask (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags)
680 if (!(data = loadimagepixelsmask (filename, complain, matchwidth, matchheight)))
682 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
687 rtexture_t *image_masktex;
688 rtexture_t *image_nmaptex;
689 rtexture_t *loadtextureimagewithmask (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags)
693 image_masktex = NULL;
694 image_nmaptex = NULL;
695 if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight)))
698 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
700 if (flags & TEXF_ALPHA && image_makemask(data, data, image_width * image_height))
701 image_masktex = R_LoadTexture2D(pool, va("%s_mask", filename), image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
707 rtexture_t *loadtextureimagewithmaskandnmap (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags, float bumpscale)
711 image_masktex = NULL;
712 image_nmaptex = NULL;
713 if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight)))
716 data2 = Mem_Alloc(tempmempool, image_width * image_height * 4);
718 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
720 Image_HeightmapToNormalmap(data, data2, image_width, image_height, (flags & TEXF_CLAMP) != 0, bumpscale);
721 image_nmaptex = R_LoadTexture2D(pool, va("%s_nmap", filename), image_width, image_height, data2, TEXTYPE_RGBA, flags, NULL);
723 if (flags & TEXF_ALPHA && image_makemask(data, data2, image_width * image_height))
724 image_masktex = R_LoadTexture2D(pool, va("%s_mask", filename), image_width, image_height, data2, TEXTYPE_RGBA, flags, NULL);
732 rtexture_t *loadtextureimagebumpasnmap (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags, float bumpscale)
736 if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight)))
738 data2 = Mem_Alloc(tempmempool, image_width * image_height * 4);
740 Image_HeightmapToNormalmap(data, data2, image_width, image_height, (flags & TEXF_CLAMP) != 0, bumpscale);
741 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data2, TEXTYPE_RGBA, flags, NULL);
748 qboolean Image_WriteTGARGB_preflipped (const char *filename, int width, int height, const qbyte *data)
752 const qbyte *in, *end;
754 buffer = Mem_Alloc(tempmempool, width*height*3 + 18);
756 memset (buffer, 0, 18);
757 buffer[2] = 2; // uncompressed type
758 buffer[12] = (width >> 0) & 0xFF;
759 buffer[13] = (width >> 8) & 0xFF;
760 buffer[14] = (height >> 0) & 0xFF;
761 buffer[15] = (height >> 8) & 0xFF;
762 buffer[16] = 24; // pixel size
767 end = in + width*height*3;
768 for (;in < end;in += 3)
774 ret = FS_WriteFile (filename, buffer, width*height*3 + 18 );
780 void Image_WriteTGARGB (const char *filename, int width, int height, const qbyte *data)
784 const qbyte *in, *end;
786 buffer = Mem_Alloc(tempmempool, width*height*3 + 18);
788 memset (buffer, 0, 18);
789 buffer[2] = 2; // uncompressed type
790 buffer[12] = (width >> 0) & 0xFF;
791 buffer[13] = (width >> 8) & 0xFF;
792 buffer[14] = (height >> 0) & 0xFF;
793 buffer[15] = (height >> 8) & 0xFF;
794 buffer[16] = 24; // pixel size
796 // swap rgb to bgr and flip upside down
798 for (y = height - 1;y >= 0;y--)
800 in = data + y * width * 3;
801 end = in + width * 3;
802 for (;in < end;in += 3)
809 FS_WriteFile (filename, buffer, width*height*3 + 18 );
814 void Image_WriteTGARGBA (const char *filename, int width, int height, const qbyte *data)
818 const qbyte *in, *end;
820 buffer = Mem_Alloc(tempmempool, width*height*4 + 18);
822 memset (buffer, 0, 18);
823 buffer[2] = 2; // uncompressed type
824 buffer[12] = (width >> 0) & 0xFF;
825 buffer[13] = (width >> 8) & 0xFF;
826 buffer[14] = (height >> 0) & 0xFF;
827 buffer[15] = (height >> 8) & 0xFF;
828 buffer[16] = 32; // pixel size
830 // swap rgba to bgra and flip upside down
832 for (y = height - 1;y >= 0;y--)
834 in = data + y * width * 4;
835 end = in + width * 4;
836 for (;in < end;in += 4)
844 FS_WriteFile (filename, buffer, width*height*4 + 18 );
849 qboolean Image_CheckAlpha(const qbyte *data, int size, qboolean rgba)
855 for (end = data + size * 4, data += 3;data < end;data += 4)
861 // color 255 is transparent
862 for (end = data + size;data < end;data++)
869 static void Image_Resample32LerpLine (const qbyte *in, qbyte *out, int inwidth, int outwidth)
871 int j, xi, oldx = 0, f, fstep, endx, lerp;
872 fstep = (int) (inwidth*65536.0f/outwidth);
874 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
879 in += (xi - oldx) * 4;
885 *out++ = (qbyte) ((((in[4] - in[0]) * lerp) >> 16) + in[0]);
886 *out++ = (qbyte) ((((in[5] - in[1]) * lerp) >> 16) + in[1]);
887 *out++ = (qbyte) ((((in[6] - in[2]) * lerp) >> 16) + in[2]);
888 *out++ = (qbyte) ((((in[7] - in[3]) * lerp) >> 16) + in[3]);
890 else // last pixel of the line has no pixel to lerp to
900 static void Image_Resample24LerpLine (const qbyte *in, qbyte *out, int inwidth, int outwidth)
902 int j, xi, oldx = 0, f, fstep, endx, lerp;
903 fstep = (int) (inwidth*65536.0f/outwidth);
905 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
910 in += (xi - oldx) * 3;
916 *out++ = (qbyte) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
917 *out++ = (qbyte) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
918 *out++ = (qbyte) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
920 else // last pixel of the line has no pixel to lerp to
929 int resamplerowsize = 0;
930 qbyte *resamplerow1 = NULL;
931 qbyte *resamplerow2 = NULL;
932 mempool_t *resamplemempool = NULL;
934 #define LERPBYTE(i) r = resamplerow1[i];out[i] = (qbyte) ((((resamplerow2[i] - r) * lerp) >> 16) + r)
935 void Image_Resample32Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
937 int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth4 = inwidth*4, outwidth4 = outwidth*4;
941 fstep = (int) (inheight*65536.0f/outheight);
945 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
946 Image_Resample32LerpLine (inrow + inwidth4, resamplerow2, inwidth, outwidth);
947 for (i = 0, f = 0;i < outheight;i++,f += fstep)
955 inrow = (qbyte *)indata + inwidth4*yi;
957 memcpy(resamplerow1, resamplerow2, outwidth4);
959 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
960 Image_Resample32LerpLine (inrow + inwidth4, resamplerow2, inwidth, outwidth);
1011 resamplerow1 -= outwidth4;
1012 resamplerow2 -= outwidth4;
1018 inrow = (qbyte *)indata + inwidth4*yi;
1020 memcpy(resamplerow1, resamplerow2, outwidth4);
1022 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
1025 memcpy(out, resamplerow1, outwidth4);
1030 void Image_Resample32Nearest(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1033 unsigned frac, fracstep;
1034 // relies on int being 4 bytes
1038 fracstep = inwidth*0x10000/outwidth;
1039 for (i = 0;i < outheight;i++)
1041 inrow = (int *)indata + inwidth*(i*inheight/outheight);
1042 frac = fracstep >> 1;
1046 out[0] = inrow[frac >> 16];frac += fracstep;
1047 out[1] = inrow[frac >> 16];frac += fracstep;
1048 out[2] = inrow[frac >> 16];frac += fracstep;
1049 out[3] = inrow[frac >> 16];frac += fracstep;
1055 out[0] = inrow[frac >> 16];frac += fracstep;
1056 out[1] = inrow[frac >> 16];frac += fracstep;
1061 out[0] = inrow[frac >> 16];frac += fracstep;
1067 void Image_Resample24Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1069 int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
1073 fstep = (int) (inheight*65536.0f/outheight);
1077 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1078 Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
1079 for (i = 0, f = 0;i < outheight;i++,f += fstep)
1087 inrow = (qbyte *)indata + inwidth3*yi;
1089 memcpy(resamplerow1, resamplerow2, outwidth3);
1091 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1092 Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
1136 resamplerow1 -= outwidth3;
1137 resamplerow2 -= outwidth3;
1143 inrow = (qbyte *)indata + inwidth3*yi;
1145 memcpy(resamplerow1, resamplerow2, outwidth3);
1147 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1150 memcpy(out, resamplerow1, outwidth3);
1155 void Image_Resample24Nolerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1157 int i, j, f, inwidth3 = inwidth * 3;
1158 unsigned frac, fracstep;
1162 fracstep = inwidth*0x10000/outwidth;
1163 for (i = 0;i < outheight;i++)
1165 inrow = (qbyte *)indata + inwidth3*(i*inheight/outheight);
1166 frac = fracstep >> 1;
1170 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1171 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1172 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1173 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1178 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1179 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1184 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1195 void Image_Resample (const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int bytesperpixel, int quality)
1197 if (indepth != 1 || outdepth != 1)
1198 Sys_Error("Image_Resample: 3D resampling not supported\n");
1199 if (resamplerowsize < outwidth*4)
1202 Mem_Free(resamplerow1);
1203 resamplerowsize = outwidth*4;
1204 if (!resamplemempool)
1205 resamplemempool = Mem_AllocPool("Image Scaling Buffer");
1206 resamplerow1 = Mem_Alloc(resamplemempool, resamplerowsize*2);
1207 resamplerow2 = resamplerow1 + resamplerowsize;
1209 if (bytesperpixel == 4)
1212 Image_Resample32Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1214 Image_Resample32Nearest(indata, inwidth, inheight, outdata, outwidth, outheight);
1216 else if (bytesperpixel == 3)
1219 Image_Resample24Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1221 Image_Resample24Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1224 Sys_Error("Image_Resample: unsupported bytesperpixel %i\n", bytesperpixel);
1227 // in can be the same as out
1228 void Image_MipReduce(const qbyte *in, qbyte *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth, int bytesperpixel)
1231 if (*depth != 1 || destdepth != 1)
1232 Sys_Error("Image_Resample: 3D resampling not supported\n");
1233 nextrow = *width * bytesperpixel;
1234 if (*width > destwidth)
1237 if (*height > destheight)
1241 if (bytesperpixel == 4)
1243 for (y = 0;y < *height;y++)
1245 for (x = 0;x < *width;x++)
1247 out[0] = (qbyte) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
1248 out[1] = (qbyte) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
1249 out[2] = (qbyte) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
1250 out[3] = (qbyte) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
1254 in += nextrow; // skip a line
1257 else if (bytesperpixel == 3)
1259 for (y = 0;y < *height;y++)
1261 for (x = 0;x < *width;x++)
1263 out[0] = (qbyte) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
1264 out[1] = (qbyte) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
1265 out[2] = (qbyte) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
1269 in += nextrow; // skip a line
1273 Sys_Error("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1278 if (bytesperpixel == 4)
1280 for (y = 0;y < *height;y++)
1282 for (x = 0;x < *width;x++)
1284 out[0] = (qbyte) ((in[0] + in[4]) >> 1);
1285 out[1] = (qbyte) ((in[1] + in[5]) >> 1);
1286 out[2] = (qbyte) ((in[2] + in[6]) >> 1);
1287 out[3] = (qbyte) ((in[3] + in[7]) >> 1);
1293 else if (bytesperpixel == 3)
1295 for (y = 0;y < *height;y++)
1297 for (x = 0;x < *width;x++)
1299 out[0] = (qbyte) ((in[0] + in[3]) >> 1);
1300 out[1] = (qbyte) ((in[1] + in[4]) >> 1);
1301 out[2] = (qbyte) ((in[2] + in[5]) >> 1);
1308 Sys_Error("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1313 if (*height > destheight)
1317 if (bytesperpixel == 4)
1319 for (y = 0;y < *height;y++)
1321 for (x = 0;x < *width;x++)
1323 out[0] = (qbyte) ((in[0] + in[nextrow ]) >> 1);
1324 out[1] = (qbyte) ((in[1] + in[nextrow+1]) >> 1);
1325 out[2] = (qbyte) ((in[2] + in[nextrow+2]) >> 1);
1326 out[3] = (qbyte) ((in[3] + in[nextrow+3]) >> 1);
1330 in += nextrow; // skip a line
1333 else if (bytesperpixel == 3)
1335 for (y = 0;y < *height;y++)
1337 for (x = 0;x < *width;x++)
1339 out[0] = (qbyte) ((in[0] + in[nextrow ]) >> 1);
1340 out[1] = (qbyte) ((in[1] + in[nextrow+1]) >> 1);
1341 out[2] = (qbyte) ((in[2] + in[nextrow+2]) >> 1);
1345 in += nextrow; // skip a line
1349 Sys_Error("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1352 Sys_Error("Image_MipReduce: desired size already achieved\n");
1356 void Image_HeightmapToNormalmap(const unsigned char *inpixels, unsigned char *outpixels, int width, int height, int clamp, float bumpscale)
1359 const unsigned char *p0, *p1, *p2;
1361 float iwidth, iheight, ibumpscale, n[3];
1362 iwidth = 1.0f / width;
1363 iheight = 1.0f / height;
1364 ibumpscale = (255.0f * 3.0f) / bumpscale;
1366 for (y = 0;y < height;y++)
1368 for (x = 0;x < width;x++)
1370 p0 = inpixels + (y * width + x) * 4;
1374 p1 = inpixels + (y * width + x) * 4;
1376 p1 = inpixels + (y * width) * 4;
1379 p1 = inpixels + (y * width + x + 1) * 4;
1380 if (y == height - 1)
1383 p2 = inpixels + (y * width + x) * 4;
1385 p2 = inpixels + x * 4;
1388 p2 = inpixels + ((y + 1) * width + x) * 4;
1392 dv[0][2] = ((p1[0] + p1[1] + p1[2]) * ibumpscale) - ((p0[0] + p0[1] + p0[2]) * ibumpscale);
1395 dv[1][2] = ((p2[0] + p2[1] + p2[2]) * ibumpscale) - ((p0[0] + p0[1] + p0[2]) * ibumpscale);
1396 n[0] = dv[0][1]*dv[1][2]-dv[0][2]*dv[1][1];
1397 n[1] = dv[0][2]*dv[1][0]-dv[0][0]*dv[1][2];
1398 n[2] = dv[0][0]*dv[1][1]-dv[0][1]*dv[1][0];
1400 n[0] = ((p0[0] + p0[1] + p0[2]) - (p1[0] + p1[1] + p1[2]));
1401 n[1] = ((p0[0] + p0[1] + p0[2]) - (p2[0] + p2[1] + p2[2]));
1405 // this should work for the bottom right triangle if anyone wants
1406 // code for that for some reason
1407 n[0] = ((p1[0] + p1[1] + p1[2]) - (p3[0] + p3[1] + p3[2]));
1408 n[1] = ((p2[0] + p2[1] + p2[2]) - (p3[0] + p3[1] + p3[2]));
1412 out[0] = 128.0f + n[0] * 127.0f;
1413 out[1] = 128.0f + n[1] * 127.0f;
1414 out[2] = 128.0f + n[2] * 127.0f;
1421 int image_loadskin(imageskin_t *s, char *shadername)
1425 int bumppixels_width, bumppixels_height;
1426 char name[MAX_QPATH];
1427 Image_StripImageExtension(shadername, name);
1428 memset(s, 0, sizeof(*s));
1429 s->basepixels = loadimagepixels(name, false, 0, 0);
1430 if (s->basepixels == NULL)
1432 s->basepixels_width = image_width;
1433 s->basepixels_height = image_height;
1435 bumppixels = NULL;bumppixels_width = 0;bumppixels_height = 0;
1436 if (Image_CheckAlpha(s->basepixels, s->basepixels_width * s->basepixels_height, true))
1438 s->maskpixels = Mem_Alloc(loadmodel->mempool, s->basepixels_width * s->basepixels_height * 4);
1439 s->maskpixels_width = s->basepixels_width;
1440 s->maskpixels_height = s->basepixels_height;
1441 memcpy(s->maskpixels, s->basepixels, s->maskpixels_width * s->maskpixels_height * 4);
1442 for (j = 0;j < s->basepixels_width * s->basepixels_height * 4;j += 4)
1444 s->maskpixels[j+0] = 255;
1445 s->maskpixels[j+1] = 255;
1446 s->maskpixels[j+2] = 255;
1450 // _luma is supported for tenebrae compatibility
1451 // (I think it's a very stupid name, but oh well)
1452 if ((s->glowpixels = loadimagepixels(va("%s_glow", name), false, 0, 0)) != NULL
1453 || (s->glowpixels = loadimagepixels(va("%s_luma", name), false, 0, 0)) != NULL)
1455 s->glowpixels_width = image_width;
1456 s->glowpixels_height = image_height;
1458 // _norm is the name used by tenebrae
1459 // (I don't like the name much)
1460 if ((s->nmappixels = loadimagepixels(va("%s_norm", name), false, 0, 0)) != NULL)
1462 s->nmappixels_width = image_width;
1463 s->nmappixels_height = image_height;
1465 else if ((bumppixels = loadimagepixels(va("%s_bump", name), false, 0, 0)) != NULL)
1467 bumppixels_width = image_width;
1468 bumppixels_height = image_height;
1470 if ((s->glosspixels = loadimagepixels(va("%s_gloss", name), false, 0, 0)) != NULL)
1472 s->glosspixels_width = image_width;
1473 s->glosspixels_height = image_height;
1475 if ((s->pantspixels = loadimagepixels(va("%s_pants", name), false, 0, 0)) != NULL)
1477 s->pantspixels_width = image_width;
1478 s->pantspixels_height = image_height;
1480 if ((s->shirtpixels = loadimagepixels(va("%s_shirt", name), false, 0, 0)) != NULL)
1482 s->shirtpixels_width = image_width;
1483 s->shirtpixels_height = image_height;
1486 if (s->nmappixels == NULL)
1488 if (bumppixels != NULL)
1490 if (r_shadow_bumpscale_bumpmap.value > 0)
1492 s->nmappixels = Mem_Alloc(loadmodel->mempool, bumppixels_width * bumppixels_height * 4);
1493 s->nmappixels_width = bumppixels_width;
1494 s->nmappixels_height = bumppixels_height;
1495 Image_HeightmapToNormalmap(bumppixels, s->nmappixels, s->nmappixels_width, s->nmappixels_height, false, r_shadow_bumpscale_bumpmap.value);
1500 if (r_shadow_bumpscale_basetexture.value > 0)
1502 s->nmappixels = Mem_Alloc(loadmodel->mempool, s->basepixels_width * s->basepixels_height * 4);
1503 s->nmappixels_width = s->basepixels_width;
1504 s->nmappixels_height = s->basepixels_height;
1505 Image_HeightmapToNormalmap(s->basepixels, s->nmappixels, s->nmappixels_width, s->nmappixels_height, false, r_shadow_bumpscale_basetexture.value);
1509 if (bumppixels != NULL)
1510 Mem_Free(bumppixels);
1514 void image_freeskin(imageskin_t *s)
1517 Mem_Free(s->basepixels);
1519 Mem_Free(s->maskpixels);
1521 Mem_Free(s->nmappixels);
1523 Mem_Free(s->glowpixels);
1525 Mem_Free(s->glosspixels);
1527 Mem_Free(s->pantspixels);
1529 Mem_Free(s->shirtpixels);
1530 memset(s, 0, sizeof(*s));