images: replace generated palette with first image one
This commit is contained in:
Denis Pauk
parent
4e61cbccc2
commit
1a9733bd75
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@ -114,6 +114,7 @@ static unsigned char quitscreenfix[] = {
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static byte *colormap_cache = NULL;
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static unsigned d_8to24table_cache[256];
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static qboolean colormap_loaded = false;
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static void
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@ -673,8 +674,99 @@ WAL_Decode(const char *name, const byte *raw, int len, byte **pic, byte **palett
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}
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}
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void
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VID_ImageDecode(const char *filename, byte **pic, byte **palette,
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static byte
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Convert24to8(const byte *d_8to24table, const int rgb[3])
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{
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int i, best, diff;
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best = 255;
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diff = 1 << 20;
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for (i = 0; i < 256; i ++)
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{
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int j, curr_diff;
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curr_diff = 0;
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for (j = 0; j < 3; j++)
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{
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int v;
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v = d_8to24table[i * 4 + j] - rgb[j];
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curr_diff += v * v;
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}
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if (curr_diff < diff)
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{
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diff = curr_diff;
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best = i;
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}
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}
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return best;
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}
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static void
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GenerateColormap(const byte *palette, byte *out_colormap)
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{
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// https://quakewiki.org/wiki/Quake_palette
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int num_fullbrights = 32; /* the last 32 colours will be full bright */
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int x;
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for (x = 0; x < 256; x++)
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{
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int y;
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for (y = 0; y < 64; y++)
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{
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if (x < 256 - num_fullbrights)
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{
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int rgb[3], i;
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for (i = 0; i < 3; i++)
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{
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/* divide by 32, rounding to nearest integer */
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rgb[i] = (palette[x * 4 + i] * (63 - y) + 16) >> 5;
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if (rgb[i] > 255)
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{
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rgb[i] = 255;
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}
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}
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out_colormap[y * 256 + x] = Convert24to8(palette, rgb);
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}
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else
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{
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/* this colour is a fullbright, just keep the original colour */
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out_colormap[y*256 + x] = x;
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}
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}
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}
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}
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static void
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Convert24to32(unsigned *d_8to24table, byte *pal)
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{
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int i;
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for (i = 0; i < 256; i++)
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{
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unsigned v;
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int r, g, b;
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r = pal[i*3+0];
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g = pal[i*3+1];
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b = pal[i*3+2];
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v = (255U<<24) + (r<<0) + (g<<8) + (b<<16);
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d_8to24table[i] = LittleLong(v);
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}
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d_8to24table[255] &= LittleLong(0xffffff); // 255 is transparent
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}
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static void
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LoadImageWithPalette(const char *filename, byte **pic, byte **palette,
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int *width, int *height, int *bitesPerPixel)
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{
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const char* ext;
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@ -760,73 +852,18 @@ VID_ImageDecode(const char *filename, byte **pic, byte **palette,
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FS_FreeFile(raw);
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}
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static byte
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Convert24to8(const byte *d_8to24table, const int rgb[3])
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void
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VID_ImageDecode(const char *filename, byte **pic, byte **palette,
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int *width, int *height, int *bitesPerPixel)
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{
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int i, best, diff;
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LoadImageWithPalette(filename, pic, palette, width, height, bitesPerPixel);
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best = 255;
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diff = 1 << 20;
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for (i = 0; i < 256; i ++)
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if (palette && *palette && colormap_cache && !colormap_loaded)
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{
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int j, curr_diff;
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curr_diff = 0;
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for (j = 0; j < 3; j++)
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{
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int v;
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v = d_8to24table[i * 4 + j] - rgb[j];
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curr_diff += v * v;
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}
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if (curr_diff < diff)
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{
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diff = curr_diff;
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best = i;
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}
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}
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return best;
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}
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static void
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GenerateColormap(const byte *palette, byte *out_colormap)
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{
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// https://quakewiki.org/wiki/Quake_palette
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int num_fullbrights = 32; /* the last 32 colours will be full bright */
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int x;
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for (x = 0; x < 256; x++)
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{
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int y;
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for (y = 0; y < 64; y++)
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{
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if (x < 256 - num_fullbrights)
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{
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int rgb[3], i;
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for (i = 0; i < 3; i++)
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{
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/* divide by 32, rounding to nearest integer */
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rgb[i] = (palette[x * 4 + i] * (63 - y) + 16) >> 5;
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if (rgb[i] > 255)
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{
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rgb[i] = 255;
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}
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}
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out_colormap[y*256+x] = Convert24to8(palette, rgb);
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}
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else
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{
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/* this colour is a fullbright, just keep the original colour */
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out_colormap[y*256+x] = x;
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}
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}
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/* Stil have no palette, lets use palete from first loaded image */
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Convert24to32(d_8to24table_cache, *palette);
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GenerateColormap((const byte *)d_8to24table_cache, colormap_cache);
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colormap_loaded = true;
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}
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}
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@ -840,7 +877,7 @@ LoadPalette(byte **colormap, unsigned *d_8to24table)
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filename = "pics/colormap.pcx";
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/* get the palette and colormap */
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VID_ImageDecode(filename, colormap, &pal, NULL, NULL,
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LoadImageWithPalette(filename, colormap, &pal, NULL, NULL,
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&bitesPerPixel);
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if (!*colormap || !pal)
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{
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@ -849,7 +886,7 @@ LoadPalette(byte **colormap, unsigned *d_8to24table)
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filename = "pics/colormap.bmp";
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VID_ImageDecode(filename, &pic, NULL, &width, &height, &bitesPerPixel);
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LoadImageWithPalette(filename, &pic, NULL, &width, &height, &bitesPerPixel);
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if (pic && width == 256 && height == 320)
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{
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int i;
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@ -878,6 +915,7 @@ LoadPalette(byte **colormap, unsigned *d_8to24table)
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}
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free(pic);
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colormap_loaded = true;
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return;
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}
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@ -917,28 +955,14 @@ LoadPalette(byte **colormap, unsigned *d_8to24table)
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}
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GenerateColormap((const byte *)d_8to24table, *colormap);
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colormap_loaded = false;
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return;
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}
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else
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{
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int i;
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for (i = 0; i < 256; i++)
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{
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unsigned v;
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int r, g, b;
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r = pal[i*3+0];
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g = pal[i*3+1];
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b = pal[i*3+2];
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v = (255U<<24) + (r<<0) + (g<<8) + (b<<16);
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d_8to24table[i] = LittleLong(v);
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}
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d_8to24table[255] &= LittleLong(0xffffff); // 255 is transparent
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Convert24to32(d_8to24table, pal);
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free(pal);
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colormap_loaded = true;
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}
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}
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@ -988,6 +1012,7 @@ VID_ImageInit(void)
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int i;
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colormap_cache = NULL;
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colormap_loaded = false;
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for (i = 0; i < 256; i++)
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{
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