12 // written by LordHavoc in a readable way, optimized by Vic, further optimized by LordHavoc (the non-special index case), readable version preserved below this
13 void Image_CopyMux(unsigned char *outpixels, const unsigned char *inpixels, int inputwidth, int inputheight, qboolean inputflipx, qboolean inputflipy, qboolean inputflipdiagonal, int numoutputcomponents, int numinputcomponents, int *outputinputcomponentindices)
16 const unsigned char *in, *line;
17 int row_inc = (inputflipy ? -inputwidth : inputwidth) * numinputcomponents, col_inc = (inputflipx ? -1 : 1) * numinputcomponents;
18 int row_ofs = (inputflipy ? (inputheight - 1) * inputwidth * numinputcomponents : 0), col_ofs = (inputflipx ? (inputwidth - 1) * numinputcomponents : 0);
20 for (c = 0; c < numoutputcomponents; c++)
21 if (outputinputcomponentindices[c] & 0x80000000)
23 if (c < numoutputcomponents)
25 // special indices used
26 if (inputflipdiagonal)
28 for (x = 0, line = inpixels + col_ofs; x < inputwidth; x++, line += col_inc)
29 for (y = 0, in = line + row_ofs; y < inputheight; y++, in += row_inc, outpixels += numinputcomponents)
30 for (c = 0; c < numoutputcomponents; c++)
31 outpixels[c] = ((index = outputinputcomponentindices[c]) & 0x80000000) ? index : in[index];
35 for (y = 0, line = inpixels + row_ofs; y < inputheight; y++, line += row_inc)
36 for (x = 0, in = line + col_ofs; x < inputwidth; x++, in += col_inc, outpixels += numinputcomponents)
37 for (c = 0; c < numoutputcomponents; c++)
38 outpixels[c] = ((index = outputinputcomponentindices[c]) & 0x80000000) ? index : in[index];
43 // special indices not used
44 if (inputflipdiagonal)
46 for (x = 0, line = inpixels + col_ofs; x < inputwidth; x++, line += col_inc)
47 for (y = 0, in = line + row_ofs; y < inputheight; y++, in += row_inc, outpixels += numinputcomponents)
48 for (c = 0; c < numoutputcomponents; c++)
49 outpixels[c] = in[outputinputcomponentindices[c]];
53 for (y = 0, line = inpixels + row_ofs; y < inputheight; y++, line += row_inc)
54 for (x = 0, in = line + col_ofs; x < inputwidth; x++, in += col_inc, outpixels += numinputcomponents)
55 for (c = 0; c < numoutputcomponents; c++)
56 outpixels[c] = in[outputinputcomponentindices[c]];
61 // intentionally readable version
62 void Image_CopyMux(unsigned char *outpixels, const unsigned char *inpixels, int inputwidth, int inputheight, qboolean inputflipx, qboolean inputflipy, qboolean inputflipdiagonal, int numoutputcomponents, int numinputcomponents, int *outputinputcomponentindices)
65 const unsigned char *in, *inrow, *incolumn;
66 if (inputflipdiagonal)
68 for (x = 0;x < inputwidth;x++)
70 for (y = 0;y < inputheight;y++)
72 in = inpixels + ((inputflipy ? inputheight - 1 - y : y) * inputwidth + (inputflipx ? inputwidth - 1 - x : x)) * numinputcomponents;
73 for (c = 0;c < numoutputcomponents;c++)
75 index = outputinputcomponentindices[c];
76 if (index & 0x80000000)
79 *outpixels++ = in[index];
86 for (y = 0;y < inputheight;y++)
88 for (x = 0;x < inputwidth;x++)
90 in = inpixels + ((inputflipy ? inputheight - 1 - y : y) * inputwidth + (inputflipx ? inputwidth - 1 - x : x)) * numinputcomponents;
91 for (c = 0;c < numoutputcomponents;c++)
93 index = outputinputcomponentindices[c];
94 if (index & 0x80000000)
97 *outpixels++ = in[index];
105 void Image_GammaRemapRGB(const unsigned char *in, unsigned char *out, int pixels, const unsigned char *gammar, const unsigned char *gammag, const unsigned char *gammab)
109 out[0] = gammar[in[0]];
110 out[1] = gammag[in[1]];
111 out[2] = gammab[in[2]];
117 // note: pal must be 32bit color
118 void Image_Copy8bitRGBA(const unsigned char *in, unsigned char *out, int pixels, const unsigned int *pal)
120 int *iout = (int *)out;
123 iout[0] = pal[in[0]];
124 iout[1] = pal[in[1]];
125 iout[2] = pal[in[2]];
126 iout[3] = pal[in[3]];
127 iout[4] = pal[in[4]];
128 iout[5] = pal[in[5]];
129 iout[6] = pal[in[6]];
130 iout[7] = pal[in[7]];
137 iout[0] = pal[in[0]];
138 iout[1] = pal[in[1]];
139 iout[2] = pal[in[2]];
140 iout[3] = pal[in[3]];
146 iout[0] = pal[in[0]];
147 iout[1] = pal[in[1]];
152 iout[0] = pal[in[0]];
156 =================================================================
160 =================================================================
169 unsigned short xmin,ymin,xmax,ymax;
170 unsigned short hres,vres;
171 unsigned char palette[48];
174 unsigned short bytes_per_line;
175 unsigned short palette_type;
184 unsigned char* LoadPCX (const unsigned char *f, int filesize, int matchwidth, int matchheight)
187 unsigned char *a, *b, *image_rgba, *pbuf;
188 const unsigned char *palette, *fin, *enddata;
189 int x, y, x2, dataByte;
191 if (filesize < (int)sizeof(pcx) + 768)
193 Con_Print("Bad pcx file\n");
199 memcpy(&pcx, fin, sizeof(pcx));
202 // LordHavoc: big-endian support ported from QF newtree
203 pcx.xmax = LittleShort (pcx.xmax);
204 pcx.xmin = LittleShort (pcx.xmin);
205 pcx.ymax = LittleShort (pcx.ymax);
206 pcx.ymin = LittleShort (pcx.ymin);
207 pcx.hres = LittleShort (pcx.hres);
208 pcx.vres = LittleShort (pcx.vres);
209 pcx.bytes_per_line = LittleShort (pcx.bytes_per_line);
210 pcx.palette_type = LittleShort (pcx.palette_type);
212 image_width = pcx.xmax + 1 - pcx.xmin;
213 image_height = pcx.ymax + 1 - pcx.ymin;
214 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)
216 Con_Print("Bad pcx file\n");
219 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
222 palette = f + filesize - 768;
224 image_rgba = (unsigned char *)Mem_Alloc(tempmempool, image_width*image_height*4);
227 Con_Printf("LoadPCX: not enough memory for %i by %i image\n", image_width, image_height);
230 pbuf = image_rgba + image_width*image_height*3;
233 for (y = 0;y < image_height && fin < enddata;y++)
235 a = pbuf + y * image_width;
236 for (x = 0;x < image_width && fin < enddata;)
243 x2 = x + (dataByte & 0x3F);
245 if (x2 > image_width)
246 x2 = image_width; // technically an error
253 fin += pcx.bytes_per_line - image_width; // the number of bytes per line is always forced to an even number
254 while(x < image_width)
261 for(x = 0;x < image_width*image_height;x++)
274 =========================================================
278 =========================================================
281 typedef struct _TargaHeader
283 unsigned char id_length, colormap_type, image_type;
284 unsigned short colormap_index, colormap_length;
285 unsigned char colormap_size;
286 unsigned short x_origin, y_origin, width, height;
287 unsigned char pixel_size, attributes;
291 void PrintTargaHeader(TargaHeader *t)
293 Con_Printf("TargaHeader:\nuint8 id_length = %i;\nuint8 colormap_type = %i;\nuint8 image_type = %i;\nuint16 colormap_index = %i;\nuint16 colormap_length = %i;\nuint8 colormap_size = %i;\nuint16 x_origin = %i;\nuint16 y_origin = %i;\nuint16 width = %i;\nuint16 height = %i;\nuint8 pixel_size = %i;\nuint8 attributes = %i;\n", t->id_length, t->colormap_type, t->image_type, t->colormap_index, t->colormap_length, t->colormap_size, t->x_origin, t->y_origin, t->width, t->height, t->pixel_size, t->attributes);
301 unsigned char *LoadTGA (const unsigned char *f, int filesize, int matchwidth, int matchheight)
303 int x, y, pix_inc, row_inc, red, green, blue, alpha, runlen, alphabits;
304 unsigned char *pixbuf, *image_rgba;
305 const unsigned char *fin, *enddata;
307 TargaHeader targa_header;
308 unsigned char palette[256*4];
313 enddata = f + filesize;
315 targa_header.id_length = f[0];
316 targa_header.colormap_type = f[1];
317 targa_header.image_type = f[2];
319 targa_header.colormap_index = f[3] + f[4] * 256;
320 targa_header.colormap_length = f[5] + f[6] * 256;
321 targa_header.colormap_size = f[7];
322 targa_header.x_origin = f[8] + f[9] * 256;
323 targa_header.y_origin = f[10] + f[11] * 256;
324 targa_header.width = image_width = f[12] + f[13] * 256;
325 targa_header.height = image_height = f[14] + f[15] * 256;
326 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
328 Con_Print("LoadTGA: invalid size\n");
329 PrintTargaHeader(&targa_header);
332 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
334 targa_header.pixel_size = f[16];
335 targa_header.attributes = f[17];
337 // advance to end of header
340 // skip TARGA image comment (usually 0 bytes)
341 fin += targa_header.id_length;
343 // read/skip the colormap if present (note: according to the TARGA spec it
344 // can be present even on truecolor or greyscale images, just not used by
346 if (targa_header.colormap_type)
348 if (targa_header.colormap_length > 256)
350 Con_Print("LoadTGA: only up to 256 colormap_length supported\n");
351 PrintTargaHeader(&targa_header);
354 if (targa_header.colormap_index)
356 Con_Print("LoadTGA: colormap_index not supported\n");
357 PrintTargaHeader(&targa_header);
360 if (targa_header.colormap_size == 24)
362 for (x = 0;x < targa_header.colormap_length;x++)
364 palette[x*4+2] = *fin++;
365 palette[x*4+1] = *fin++;
366 palette[x*4+0] = *fin++;
367 palette[x*4+3] = 255;
370 else if (targa_header.colormap_size == 32)
372 for (x = 0;x < targa_header.colormap_length;x++)
374 palette[x*4+2] = *fin++;
375 palette[x*4+1] = *fin++;
376 palette[x*4+0] = *fin++;
377 palette[x*4+3] = *fin++;
382 Con_Print("LoadTGA: Only 32 and 24 bit colormap_size supported\n");
383 PrintTargaHeader(&targa_header);
388 // check our pixel_size restrictions according to image_type
389 switch (targa_header.image_type & ~8)
392 if (targa_header.pixel_size != 24 && targa_header.pixel_size != 32)
394 Con_Print("LoadTGA: only 24bit and 32bit pixel sizes supported for type 2 and type 10 images\n");
395 PrintTargaHeader(&targa_header);
400 // set up a palette to make the loader easier
401 for (x = 0;x < 256;x++)
406 palette[x*4+3] = 255;
408 // fall through to colormap case
410 if (targa_header.pixel_size != 8)
412 Con_Print("LoadTGA: only 8bit pixel size for type 1, 3, 9, and 11 images supported\n");
413 PrintTargaHeader(&targa_header);
418 Con_Printf("LoadTGA: Only type 1, 2, 3, 9, 10, and 11 targa RGB images supported, image_type = %i\n", targa_header.image_type);
419 PrintTargaHeader(&targa_header);
423 if (targa_header.attributes & 0x10)
425 Con_Print("LoadTGA: origin must be in top left or bottom left, top right and bottom right are not supported\n");
429 // number of attribute bits per pixel, we only support 0 or 8
430 alphabits = targa_header.attributes & 0x0F;
431 if (alphabits != 8 && alphabits != 0)
433 Con_Print("LoadTGA: only 0 or 8 attribute (alpha) bits supported\n");
437 image_rgba = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
440 Con_Printf("LoadTGA: not enough memory for %i by %i image\n", image_width, image_height);
444 // If bit 5 of attributes isn't set, the image has been stored from bottom to top
445 if ((targa_header.attributes & 0x20) == 0)
447 pixbuf = image_rgba + (image_height - 1)*image_width*4;
448 row_inc = -image_width*4*2;
458 red = green = blue = alpha = 255;
460 if ((targa_header.image_type & ~8) == 2)
461 pix_inc = targa_header.pixel_size / 8;
462 switch (targa_header.image_type)
464 case 1: // colormapped, uncompressed
465 case 3: // greyscale, uncompressed
466 if (fin + image_width * image_height * pix_inc > enddata)
468 for (y = 0;y < image_height;y++, pixbuf += row_inc)
470 for (x = 0;x < image_width;x++)
472 p = palette + *fin++ * 4;
481 // BGR or BGRA, uncompressed
482 if (fin + image_width * image_height * pix_inc > enddata)
484 if (targa_header.pixel_size == 32 && alphabits)
486 for (y = 0;y < image_height;y++, pixbuf += row_inc)
488 for (x = 0;x < image_width;x++, fin += pix_inc)
499 for (y = 0;y < image_height;y++, pixbuf += row_inc)
501 for (x = 0;x < image_width;x++, fin += pix_inc)
511 case 9: // colormapped, RLE
512 case 11: // greyscale, RLE
513 for (y = 0;y < image_height;y++, pixbuf += row_inc)
515 for (x = 0;x < image_width;)
518 break; // error - truncated file
522 // RLE - all pixels the same color
524 if (fin + pix_inc > enddata)
525 break; // error - truncated file
526 if (x + runlen > image_width)
527 break; // error - line exceeds width
528 p = palette + *fin++ * 4;
543 // uncompressed - all pixels different color
545 if (fin + pix_inc * runlen > enddata)
546 break; // error - truncated file
547 if (x + runlen > image_width)
548 break; // error - line exceeds width
551 p = palette + *fin++ * 4;
563 if (targa_header.pixel_size == 32 && alphabits)
565 for (y = 0;y < image_height;y++, pixbuf += row_inc)
567 for (x = 0;x < image_width;)
570 break; // error - truncated file
574 // RLE - all pixels the same color
576 if (fin + pix_inc > enddata)
577 break; // error - truncated file
578 if (x + runlen > image_width)
579 break; // error - line exceeds width
595 // uncompressed - all pixels different color
597 if (fin + pix_inc * runlen > enddata)
598 break; // error - truncated file
599 if (x + runlen > image_width)
600 break; // error - line exceeds width
601 for (;runlen--;x++, fin += pix_inc)
614 for (y = 0;y < image_height;y++, pixbuf += row_inc)
616 for (x = 0;x < image_width;)
619 break; // error - truncated file
623 // RLE - all pixels the same color
625 if (fin + pix_inc > enddata)
626 break; // error - truncated file
627 if (x + runlen > image_width)
628 break; // error - line exceeds width
644 // uncompressed - all pixels different color
646 if (fin + pix_inc * runlen > enddata)
647 break; // error - truncated file
648 if (x + runlen > image_width)
649 break; // error - line exceeds width
650 for (;runlen--;x++, fin += pix_inc)
663 // unknown image_type
675 unsigned char *LoadLMP (const unsigned char *f, int filesize, int matchwidth, int matchheight, qboolean loadAs8Bit)
677 unsigned char *image_buffer;
681 Con_Print("LoadLMP: invalid LMP file\n");
685 // parse the very complicated header *chuckle*
686 image_width = BuffLittleLong(f);
687 image_height = BuffLittleLong(f + 4);
688 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
690 Con_Printf("LoadLMP: invalid size %ix%i\n", image_width, image_height);
693 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
696 if (filesize < (8 + image_width * image_height))
698 Con_Print("LoadLMP: invalid LMP file\n");
704 image_buffer = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height);
705 memcpy(image_buffer, f + 8, image_width * image_height);
709 image_buffer = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
710 Image_Copy8bitRGBA(f + 8, image_buffer, image_width * image_height, palette_transparent);
715 static unsigned char *LoadLMPRGBA (const unsigned char *f, int filesize, int matchwidth, int matchheight)
717 return LoadLMP(f, filesize, matchwidth, matchheight, false);
721 typedef struct q2wal_s
724 unsigned width, height;
725 unsigned offsets[MIPLEVELS]; // four mip maps stored
726 char animname[32]; // next frame in animation chain
732 unsigned char *LoadWAL (const unsigned char *f, int filesize, int matchwidth, int matchheight)
734 unsigned char *image_rgba;
735 const q2wal_t *inwal = (const q2wal_t *)f;
737 if (filesize < (int) sizeof(q2wal_t))
739 Con_Print("LoadWAL: invalid WAL file\n");
743 image_width = LittleLong(inwal->width);
744 image_height = LittleLong(inwal->height);
745 if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
747 Con_Printf("LoadWAL: invalid size %ix%i\n", image_width, image_height);
750 if ((matchwidth && image_width != matchwidth) || (matchheight && image_height != matchheight))
753 if (filesize < (int) sizeof(q2wal_t) + (int) LittleLong(inwal->offsets[0]) + image_width * image_height)
755 Con_Print("LoadWAL: invalid WAL file\n");
759 image_rgba = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
762 Con_Printf("LoadLMP: not enough memory for %i by %i image\n", image_width, image_height);
765 Image_Copy8bitRGBA(f + LittleLong(inwal->offsets[0]), image_rgba, image_width * image_height, palette_complete);
770 void Image_StripImageExtension (const char *in, char *out)
772 const char *end, *temp;
773 end = in + strlen(in);
777 if (strcmp(temp, ".tga") == 0
778 || strcmp(temp, ".pcx") == 0
779 || strcmp(temp, ".lmp") == 0
780 || strcmp(temp, ".png") == 0
781 || strcmp(temp, ".jpg") == 0)
791 typedef struct imageformat_s
793 const char *formatstring;
794 unsigned char *(*loadfunc)(const unsigned char *f, int filesize, int matchwidth, int matchheight);
798 // GAME_TENEBRAE only
799 imageformat_t imageformats_tenebrae[] =
801 {"override/%s.tga", LoadTGA},
802 {"override/%s.png", PNG_LoadImage},
803 {"override/%s.jpg", JPEG_LoadImage},
804 {"override/%s.pcx", LoadPCX},
808 imageformat_t imageformats_nopath[] =
810 {"override/%s.tga", LoadTGA},
811 {"override/%s.png", PNG_LoadImage},
812 {"override/%s.jpg", JPEG_LoadImage},
813 {"textures/%s.tga", LoadTGA},
814 {"textures/%s.png", PNG_LoadImage},
815 {"textures/%s.jpg", JPEG_LoadImage},
817 {"%s.png", PNG_LoadImage},
818 {"%s.jpg", JPEG_LoadImage},
823 imageformat_t imageformats_textures[] =
826 {"%s.png", PNG_LoadImage},
827 {"%s.jpg", JPEG_LoadImage},
833 imageformat_t imageformats_gfx[] =
836 {"%s.png", PNG_LoadImage},
837 {"%s.jpg", JPEG_LoadImage},
839 {"%s.lmp", LoadLMPRGBA},
843 imageformat_t imageformats_other[] =
846 {"%s.png", PNG_LoadImage},
847 {"%s.jpg", JPEG_LoadImage},
852 unsigned char *loadimagepixels (const char *filename, qboolean complain, int matchwidth, int matchheight)
854 fs_offset_t filesize;
855 imageformat_t *firstformat, *format;
856 unsigned char *f, *data = NULL;
857 char basename[MAX_QPATH], name[MAX_QPATH], *c;
858 if (developer_memorydebug.integer)
859 Mem_CheckSentinelsGlobal();
860 if (developer_texturelogging.integer)
861 Log_Printf("textures.log", "%s\n", filename);
862 strlcpy(basename, filename, sizeof(basename));
863 Image_StripImageExtension(basename, basename); // strip filename extensions to allow replacement by other types
864 // replace *'s with #, so commandline utils don't get confused when dealing with the external files
865 for (c = basename;*c;c++)
869 if (strchr(basename, '/'))
872 for (i = 0;i < (int)sizeof(name)-1 && basename[i] != '/';i++)
873 name[i] = basename[i];
876 if (gamemode == GAME_TENEBRAE)
877 firstformat = imageformats_tenebrae;
878 else if (!strcasecmp(name, "textures"))
879 firstformat = imageformats_textures;
880 else if (!strcasecmp(name, "gfx"))
881 firstformat = imageformats_gfx;
882 else if (!strchr(name, '/'))
883 firstformat = imageformats_nopath;
885 firstformat = imageformats_other;
886 // now try all the formats in the selected list
887 for (format = firstformat;format->formatstring;format++)
889 sprintf (name, format->formatstring, basename);
890 f = FS_LoadFile(name, tempmempool, true, &filesize);
893 data = format->loadfunc(f, filesize, matchwidth, matchheight);
897 if (developer.integer >= 10)
898 Con_Printf("loaded image %s (%dx%d)\n", name, image_width, image_height);
899 if (developer_memorydebug.integer)
900 Mem_CheckSentinelsGlobal();
907 Con_Printf("Couldn't load %s using ", filename);
908 for (format = firstformat;format->formatstring;format++)
910 sprintf (name, format->formatstring, basename);
911 Con_Printf(format == firstformat ? "\"%s\"" : (format[1].formatstring ? ", \"%s\"" : " or \"%s\".\n"), format->formatstring);
914 if (developer_memorydebug.integer)
915 Mem_CheckSentinelsGlobal();
919 rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, int matchwidth, int matchheight, qboolean complain, int flags)
923 if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight)))
925 rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_RGBA, flags, NULL);
930 qboolean Image_WriteTGARGB_preflipped (const char *filename, int width, int height, const unsigned char *data, unsigned char *buffer)
934 const unsigned char *in, *end;
936 memset (buffer, 0, 18);
937 buffer[2] = 2; // uncompressed type
938 buffer[12] = (width >> 0) & 0xFF;
939 buffer[13] = (width >> 8) & 0xFF;
940 buffer[14] = (height >> 0) & 0xFF;
941 buffer[15] = (height >> 8) & 0xFF;
942 buffer[16] = 24; // pixel size
947 end = in + width*height*3;
948 for (;in < end;in += 3)
954 ret = FS_WriteFile (filename, buffer, width*height*3 + 18 );
959 void Image_WriteTGARGBA (const char *filename, int width, int height, const unsigned char *data)
962 unsigned char *buffer, *out;
963 const unsigned char *in, *end;
965 buffer = (unsigned char *)Mem_Alloc(tempmempool, width*height*4 + 18);
967 memset (buffer, 0, 18);
968 buffer[2] = 2; // uncompressed type
969 buffer[12] = (width >> 0) & 0xFF;
970 buffer[13] = (width >> 8) & 0xFF;
971 buffer[14] = (height >> 0) & 0xFF;
972 buffer[15] = (height >> 8) & 0xFF;
973 buffer[16] = 32; // pixel size
974 buffer[17] = 8; // 8 bits of alpha
976 // swap rgba to bgra and flip upside down
978 for (y = height - 1;y >= 0;y--)
980 in = data + y * width * 4;
981 end = in + width * 4;
982 for (;in < end;in += 4)
990 FS_WriteFile (filename, buffer, width*height*4 + 18 );
995 static void Image_Resample32LerpLine (const unsigned char *in, unsigned char *out, int inwidth, int outwidth)
997 int j, xi, oldx = 0, f, fstep, endx, lerp;
998 fstep = (int) (inwidth*65536.0f/outwidth);
1000 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
1005 in += (xi - oldx) * 4;
1011 *out++ = (unsigned char) ((((in[4] - in[0]) * lerp) >> 16) + in[0]);
1012 *out++ = (unsigned char) ((((in[5] - in[1]) * lerp) >> 16) + in[1]);
1013 *out++ = (unsigned char) ((((in[6] - in[2]) * lerp) >> 16) + in[2]);
1014 *out++ = (unsigned char) ((((in[7] - in[3]) * lerp) >> 16) + in[3]);
1016 else // last pixel of the line has no pixel to lerp to
1026 static void Image_Resample24LerpLine (const unsigned char *in, unsigned char *out, int inwidth, int outwidth)
1028 int j, xi, oldx = 0, f, fstep, endx, lerp;
1029 fstep = (int) (inwidth*65536.0f/outwidth);
1031 for (j = 0,f = 0;j < outwidth;j++, f += fstep)
1036 in += (xi - oldx) * 3;
1042 *out++ = (unsigned char) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
1043 *out++ = (unsigned char) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
1044 *out++ = (unsigned char) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
1046 else // last pixel of the line has no pixel to lerp to
1055 #define LERPBYTE(i) r = resamplerow1[i];out[i] = (unsigned char) ((((resamplerow2[i] - r) * lerp) >> 16) + r)
1056 void Image_Resample32Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1058 int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth4 = inwidth*4, outwidth4 = outwidth*4;
1060 const unsigned char *inrow;
1061 unsigned char *resamplerow1;
1062 unsigned char *resamplerow2;
1063 out = (unsigned char *)outdata;
1064 fstep = (int) (inheight*65536.0f/outheight);
1066 resamplerow1 = (unsigned char *)Mem_Alloc(tempmempool, outwidth*4*2);
1067 resamplerow2 = resamplerow1 + outwidth*4;
1069 inrow = (const unsigned char *)indata;
1071 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
1072 Image_Resample32LerpLine (inrow + inwidth4, resamplerow2, inwidth, outwidth);
1073 for (i = 0, f = 0;i < outheight;i++,f += fstep)
1081 inrow = (unsigned char *)indata + inwidth4*yi;
1083 memcpy(resamplerow1, resamplerow2, outwidth4);
1085 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
1086 Image_Resample32LerpLine (inrow + inwidth4, resamplerow2, inwidth, outwidth);
1137 resamplerow1 -= outwidth4;
1138 resamplerow2 -= outwidth4;
1144 inrow = (unsigned char *)indata + inwidth4*yi;
1146 memcpy(resamplerow1, resamplerow2, outwidth4);
1148 Image_Resample32LerpLine (inrow, resamplerow1, inwidth, outwidth);
1151 memcpy(out, resamplerow1, outwidth4);
1155 Mem_Free(resamplerow1);
1156 resamplerow1 = NULL;
1157 resamplerow2 = NULL;
1160 void Image_Resample32Nolerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1163 unsigned frac, fracstep;
1164 // relies on int being 4 bytes
1166 out = (int *)outdata;
1168 fracstep = inwidth*0x10000/outwidth;
1169 for (i = 0;i < outheight;i++)
1171 inrow = (int *)indata + inwidth*(i*inheight/outheight);
1172 frac = fracstep >> 1;
1176 out[0] = inrow[frac >> 16];frac += fracstep;
1177 out[1] = inrow[frac >> 16];frac += fracstep;
1178 out[2] = inrow[frac >> 16];frac += fracstep;
1179 out[3] = inrow[frac >> 16];frac += fracstep;
1185 out[0] = inrow[frac >> 16];frac += fracstep;
1186 out[1] = inrow[frac >> 16];frac += fracstep;
1191 out[0] = inrow[frac >> 16];frac += fracstep;
1197 void Image_Resample24Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1199 int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
1201 const unsigned char *inrow;
1202 unsigned char *resamplerow1;
1203 unsigned char *resamplerow2;
1204 out = (unsigned char *)outdata;
1205 fstep = (int) (inheight*65536.0f/outheight);
1207 resamplerow1 = (unsigned char *)Mem_Alloc(tempmempool, outwidth*3*2);
1208 resamplerow2 = resamplerow1 + outwidth*3;
1210 inrow = (const unsigned char *)indata;
1212 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1213 Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
1214 for (i = 0, f = 0;i < outheight;i++,f += fstep)
1222 inrow = (unsigned char *)indata + inwidth3*yi;
1224 memcpy(resamplerow1, resamplerow2, outwidth3);
1226 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1227 Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
1271 resamplerow1 -= outwidth3;
1272 resamplerow2 -= outwidth3;
1278 inrow = (unsigned char *)indata + inwidth3*yi;
1280 memcpy(resamplerow1, resamplerow2, outwidth3);
1282 Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
1285 memcpy(out, resamplerow1, outwidth3);
1288 Mem_Free(resamplerow1);
1289 resamplerow1 = NULL;
1290 resamplerow2 = NULL;
1293 void Image_Resample24Nolerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
1295 int i, j, f, inwidth3 = inwidth * 3;
1296 unsigned frac, fracstep;
1297 unsigned char *inrow, *out;
1298 out = (unsigned char *)outdata;
1300 fracstep = inwidth*0x10000/outwidth;
1301 for (i = 0;i < outheight;i++)
1303 inrow = (unsigned char *)indata + inwidth3*(i*inheight/outheight);
1304 frac = fracstep >> 1;
1308 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1309 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1310 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1311 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1316 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1317 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1322 f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
1333 void Image_Resample (const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int bytesperpixel, int quality)
1335 if (indepth != 1 || outdepth != 1)
1337 Con_Printf ("Image_Resample: 3D resampling not supported\n");
1340 if (bytesperpixel == 4)
1343 Image_Resample32Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1345 Image_Resample32Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1347 else if (bytesperpixel == 3)
1350 Image_Resample24Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1352 Image_Resample24Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
1355 Con_Printf ("Image_Resample: unsupported bytesperpixel %i\n", bytesperpixel);
1358 // in can be the same as out
1359 void Image_MipReduce(const unsigned char *in, unsigned char *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth, int bytesperpixel)
1362 if (*depth != 1 || destdepth != 1)
1364 Con_Printf ("Image_Resample: 3D resampling not supported\n");
1365 if (*width > destwidth)
1367 if (*height > destheight)
1369 if (*depth > destdepth)
1373 nextrow = *width * bytesperpixel;
1374 if (*width > destwidth)
1377 if (*height > destheight)
1381 if (bytesperpixel == 4)
1383 for (y = 0;y < *height;y++)
1385 for (x = 0;x < *width;x++)
1387 out[0] = (unsigned char) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
1388 out[1] = (unsigned char) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
1389 out[2] = (unsigned char) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
1390 out[3] = (unsigned char) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
1394 in += nextrow; // skip a line
1397 else if (bytesperpixel == 3)
1399 for (y = 0;y < *height;y++)
1401 for (x = 0;x < *width;x++)
1403 out[0] = (unsigned char) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
1404 out[1] = (unsigned char) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
1405 out[2] = (unsigned char) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
1409 in += nextrow; // skip a line
1413 Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1418 if (bytesperpixel == 4)
1420 for (y = 0;y < *height;y++)
1422 for (x = 0;x < *width;x++)
1424 out[0] = (unsigned char) ((in[0] + in[4]) >> 1);
1425 out[1] = (unsigned char) ((in[1] + in[5]) >> 1);
1426 out[2] = (unsigned char) ((in[2] + in[6]) >> 1);
1427 out[3] = (unsigned char) ((in[3] + in[7]) >> 1);
1433 else if (bytesperpixel == 3)
1435 for (y = 0;y < *height;y++)
1437 for (x = 0;x < *width;x++)
1439 out[0] = (unsigned char) ((in[0] + in[3]) >> 1);
1440 out[1] = (unsigned char) ((in[1] + in[4]) >> 1);
1441 out[2] = (unsigned char) ((in[2] + in[5]) >> 1);
1448 Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1453 if (*height > destheight)
1457 if (bytesperpixel == 4)
1459 for (y = 0;y < *height;y++)
1461 for (x = 0;x < *width;x++)
1463 out[0] = (unsigned char) ((in[0] + in[nextrow ]) >> 1);
1464 out[1] = (unsigned char) ((in[1] + in[nextrow+1]) >> 1);
1465 out[2] = (unsigned char) ((in[2] + in[nextrow+2]) >> 1);
1466 out[3] = (unsigned char) ((in[3] + in[nextrow+3]) >> 1);
1470 in += nextrow; // skip a line
1473 else if (bytesperpixel == 3)
1475 for (y = 0;y < *height;y++)
1477 for (x = 0;x < *width;x++)
1479 out[0] = (unsigned char) ((in[0] + in[nextrow ]) >> 1);
1480 out[1] = (unsigned char) ((in[1] + in[nextrow+1]) >> 1);
1481 out[2] = (unsigned char) ((in[2] + in[nextrow+2]) >> 1);
1485 in += nextrow; // skip a line
1489 Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
1492 Con_Printf ("Image_MipReduce: desired size already achieved\n");
1496 void Image_HeightmapToNormalmap(const unsigned char *inpixels, unsigned char *outpixels, int width, int height, int clamp, float bumpscale)
1499 const unsigned char *p0, *p1, *p2;
1501 float iwidth, iheight, ibumpscale, n[3];
1502 iwidth = 1.0f / width;
1503 iheight = 1.0f / height;
1504 ibumpscale = (255.0f * 3.0f) / bumpscale;
1506 for (y = 0;y < height;y++)
1508 for (x = 0;x < width;x++)
1510 p0 = inpixels + (y * width + x) * 4;
1514 p1 = inpixels + (y * width + x) * 4;
1516 p1 = inpixels + (y * width) * 4;
1519 p1 = inpixels + (y * width + x + 1) * 4;
1520 if (y == height - 1)
1523 p2 = inpixels + (y * width + x) * 4;
1525 p2 = inpixels + x * 4;
1528 p2 = inpixels + ((y + 1) * width + x) * 4;
1532 dv[0][2] = ((p0[0] + p0[1] + p0[2]) * ibumpscale) - ((p1[0] + p1[1] + p1[2]) * ibumpscale);
1535 dv[1][2] = ((p2[0] + p2[1] + p2[2]) * ibumpscale) - ((p0[0] + p0[1] + p0[2]) * ibumpscale);
1536 n[0] = dv[0][1]*dv[1][2]-dv[0][2]*dv[1][1];
1537 n[1] = dv[0][2]*dv[1][0]-dv[0][0]*dv[1][2];
1538 n[2] = dv[0][0]*dv[1][1]-dv[0][1]*dv[1][0];
1540 n[0] = ((p0[0] + p0[1] + p0[2]) - (p1[0] + p1[1] + p1[2]));
1541 n[1] = ((p2[0] + p2[1] + p2[2]) - (p0[0] + p0[1] + p0[2]));
1545 // this should work for the bottom right triangle if anyone wants
1546 // code for that for some reason
1547 n[0] = ((p3[0] + p3[1] + p3[2]) - (p1[0] + p1[1] + p1[2]));
1548 n[1] = ((p2[0] + p2[1] + p2[2]) - (p3[0] + p3[1] + p3[2]));
1552 out[0] = (int)(128.0f + n[0] * 127.0f);
1553 out[1] = (int)(128.0f + n[1] * 127.0f);
1554 out[2] = (int)(128.0f + n[2] * 127.0f);
1555 out[3] = (p0[0] + p0[1] + p0[2]) / 3;
1561 int image_loadskin(imageskin_t *s, const char *shadername)
1564 unsigned char *bumppixels;
1565 int bumppixels_width, bumppixels_height;
1566 char name[MAX_QPATH];
1567 strlcpy(name, shadername, sizeof(name));
1568 Image_StripImageExtension(name, name);
1569 memset(s, 0, sizeof(*s));
1570 s->basepixels = loadimagepixels(name, false, 0, 0);
1571 if (s->basepixels == NULL)
1573 s->basepixels_width = image_width;
1574 s->basepixels_height = image_height;
1576 bumppixels = NULL;bumppixels_width = 0;bumppixels_height = 0;
1577 for (j = 3;j < s->basepixels_width * s->basepixels_height * 4;j += 4)
1578 if (s->basepixels[j] < 255)
1580 if (j < s->basepixels_width * s->basepixels_height * 4)
1582 // has transparent pixels
1583 s->maskpixels = (unsigned char *)Mem_Alloc(loadmodel->mempool, s->basepixels_width * s->basepixels_height * 4);
1584 s->maskpixels_width = s->basepixels_width;
1585 s->maskpixels_height = s->basepixels_height;
1586 memcpy(s->maskpixels, s->basepixels, s->maskpixels_width * s->maskpixels_height * 4);
1587 for (j = 0;j < s->basepixels_width * s->basepixels_height * 4;j += 4)
1589 s->maskpixels[j+0] = 255;
1590 s->maskpixels[j+1] = 255;
1591 s->maskpixels[j+2] = 255;
1595 // _luma is supported for tenebrae compatibility
1596 // (I think it's a very stupid name, but oh well)
1597 if ((s->glowpixels = loadimagepixels(va("%s_glow", name), false, 0, 0)) != NULL
1598 || (s->glowpixels = loadimagepixels(va("%s_luma", name), false, 0, 0)) != NULL)
1600 s->glowpixels_width = image_width;
1601 s->glowpixels_height = image_height;
1603 // _norm is the name used by tenebrae
1604 // (I don't like the name much)
1605 if ((s->nmappixels = loadimagepixels(va("%s_norm", name), false, 0, 0)) != NULL)
1607 s->nmappixels_width = image_width;
1608 s->nmappixels_height = image_height;
1610 else if ((bumppixels = loadimagepixels(va("%s_bump", name), false, 0, 0)) != NULL)
1612 bumppixels_width = image_width;
1613 bumppixels_height = image_height;
1615 if ((s->glosspixels = loadimagepixels(va("%s_gloss", name), false, 0, 0)) != NULL)
1617 s->glosspixels_width = image_width;
1618 s->glosspixels_height = image_height;
1620 if ((s->pantspixels = loadimagepixels(va("%s_pants", name), false, 0, 0)) != NULL)
1622 s->pantspixels_width = image_width;
1623 s->pantspixels_height = image_height;
1625 if ((s->shirtpixels = loadimagepixels(va("%s_shirt", name), false, 0, 0)) != NULL)
1627 s->shirtpixels_width = image_width;
1628 s->shirtpixels_height = image_height;
1631 if (s->nmappixels == NULL)
1633 if (bumppixels != NULL)
1635 if (r_shadow_bumpscale_bumpmap.value > 0)
1637 s->nmappixels = (unsigned char *)Mem_Alloc(loadmodel->mempool, bumppixels_width * bumppixels_height * 4);
1638 s->nmappixels_width = bumppixels_width;
1639 s->nmappixels_height = bumppixels_height;
1640 Image_HeightmapToNormalmap(bumppixels, s->nmappixels, s->nmappixels_width, s->nmappixels_height, false, r_shadow_bumpscale_bumpmap.value);
1645 if (r_shadow_bumpscale_basetexture.value > 0)
1647 s->nmappixels = (unsigned char *)Mem_Alloc(loadmodel->mempool, s->basepixels_width * s->basepixels_height * 4);
1648 s->nmappixels_width = s->basepixels_width;
1649 s->nmappixels_height = s->basepixels_height;
1650 Image_HeightmapToNormalmap(s->basepixels, s->nmappixels, s->nmappixels_width, s->nmappixels_height, false, r_shadow_bumpscale_basetexture.value);
1654 if (bumppixels != NULL)
1655 Mem_Free(bumppixels);
1659 void image_freeskin(imageskin_t *s)
1662 Mem_Free(s->basepixels);
1664 Mem_Free(s->maskpixels);
1666 Mem_Free(s->nmappixels);
1668 Mem_Free(s->glowpixels);
1670 Mem_Free(s->glosspixels);
1672 Mem_Free(s->pantspixels);
1674 Mem_Free(s->shirtpixels);
1675 memset(s, 0, sizeof(*s));