palette.c

   1
   2 #include "quakedef.h"
   3
   4 unsigned int palette_complete[256];
   5 unsigned int palette_nofullbrights[256];
   6 unsigned int palette_onlyfullbrights[256];
   7 unsigned int palette_nocolormapnofullbrights[256];
   8 unsigned int palette_nocolormap[256];
   9 unsigned int palette_pantsaswhite[256];
  10 unsigned int palette_shirtaswhite[256];
  11 unsigned int palette_alpha[256];
  12 unsigned int palette_font[256];
  13
  14 qbyte host_basepal[768];
  15
  16 // John Carmack said the quake palette.lmp can be considered public domain because it is not an important asset to id, so I include it here as a fallback if no external palette file is found.
  17 qbyte host_quakepal[768] =
  18 {
  19 0,0,0,15,15,15,31,31,31,47,47,47,63,63,63,75,75,75,91,91,91,107,107,107,123,123,123,139,139,139,155,155,155,171,171,171,187,187,187,203,203,203,219,219,219,235,235,235,15,11,7,23,15,11,31,23,11,39,27,15,47,35,19,55,43,23,63,47,23,75,55,27,83,59,27,91,67,31,99,75,31,107,83,31,115,87,31,123,95,35,131,103,35,143,111,35,11,11,15,19,19,27,27,27,39,39,39,51,47,47,63,55,55,75,63,63,87,71,71,103,79,79,115,91,91,127,99,99,
  20 139,107,107,151,115,115,163,123,123,175,131,131,187,139,139,203,0,0,0,7,7,0,11,11,0,19,19,0,27,27,0,35,35,0,43,43,7,47,47,7,55,55,7,63,63,7,71,71,7,75,75,11,83,83,11,91,91,11,99,99,11,107,107,15,7,0,0,15,0,0,23,0,0,31,0,0,39,0,0,47,0,0,55,0,0,63,0,0,71,0,0,79,0,0,87,0,0,95,0,0,103,0,0,111,0,0,119,0,0,127,0,0,19,19,0,27,27,0,35,35,0,47,43,0,55,47,0,67,
  21 55,0,75,59,7,87,67,7,95,71,7,107,75,11,119,83,15,131,87,19,139,91,19,151,95,27,163,99,31,175,103,35,35,19,7,47,23,11,59,31,15,75,35,19,87,43,23,99,47,31,115,55,35,127,59,43,143,67,51,159,79,51,175,99,47,191,119,47,207,143,43,223,171,39,239,203,31,255,243,27,11,7,0,27,19,0,43,35,15,55,43,19,71,51,27,83,55,35,99,63,43,111,71,51,127,83,63,139,95,71,155,107,83,167,123,95,183,135,107,195,147,123,211,163,139,227,179,151,
  22 171,139,163,159,127,151,147,115,135,139,103,123,127,91,111,119,83,99,107,75,87,95,63,75,87,55,67,75,47,55,67,39,47,55,31,35,43,23,27,35,19,19,23,11,11,15,7,7,187,115,159,175,107,143,163,95,131,151,87,119,139,79,107,127,75,95,115,67,83,107,59,75,95,51,63,83,43,55,71,35,43,59,31,35,47,23,27,35,19,19,23,11,11,15,7,7,219,195,187,203,179,167,191,163,155,175,151,139,163,135,123,151,123,111,135,111,95,123,99,83,107,87,71,95,75,59,83,63,
  23 51,67,51,39,55,43,31,39,31,23,27,19,15,15,11,7,111,131,123,103,123,111,95,115,103,87,107,95,79,99,87,71,91,79,63,83,71,55,75,63,47,67,55,43,59,47,35,51,39,31,43,31,23,35,23,15,27,19,11,19,11,7,11,7,255,243,27,239,223,23,219,203,19,203,183,15,187,167,15,171,151,11,155,131,7,139,115,7,123,99,7,107,83,0,91,71,0,75,55,0,59,43,0,43,31,0,27,15,0,11,7,0,0,0,255,11,11,239,19,19,223,27,27,207,35,35,191,43,
  24 43,175,47,47,159,47,47,143,47,47,127,47,47,111,47,47,95,43,43,79,35,35,63,27,27,47,19,19,31,11,11,15,43,0,0,59,0,0,75,7,0,95,7,0,111,15,0,127,23,7,147,31,7,163,39,11,183,51,15,195,75,27,207,99,43,219,127,59,227,151,79,231,171,95,239,191,119,247,211,139,167,123,59,183,155,55,199,195,55,231,227,87,127,191,255,171,231,255,215,255,255,103,0,0,139,0,0,179,0,0,215,0,0,255,0,0,255,243,147,255,247,199,255,255,255,159,91,83
  25 };
  26
  27 void Palette_Setup8to24(void)
  28 {
  29         int i;
  30         int fullbright_start, fullbright_end;
  31         int pants_start, pants_end;
  32         int shirt_start, shirt_end;
  33         int reversed_start, reversed_end;
  34         qbyte *in, *out;
  35         qbyte *colormap;
  36
  37         in = host_basepal;
  38         out = (qbyte *) palette_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
  39         for (i = 0;i < 255;i++)
  40         {
  41                 *out++ = *in++;
  42                 *out++ = *in++;
  43                 *out++ = *in++;
  44                 *out++ = 255;
  45         }
  46         palette_complete[255] = 0; // completely transparent black
  47
  48         // FIXME: fullbright_start should be read from colormap.lmp
  49         colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true);
  50         if (colormap && fs_filesize >= 16385)
  51                 fullbright_start = 256 - colormap[16384];
  52         else
  53                 fullbright_start = 256;
  54         if (colormap)
  55                 Mem_Free(colormap);
  56         fullbright_end = 256;
  57         pants_start = 96;
  58         pants_end = 112;
  59         shirt_start = 16;
  60         shirt_end = 32;
  61         reversed_start = 128;
  62         reversed_end = 224;
  63
  64         for (i = 0;i < fullbright_start;i++)
  65                 palette_nofullbrights[i] = palette_complete[i];
  66         for (i = fullbright_start;i < 255;i++)
  67                 palette_nofullbrights[i] = palette_complete[0];
  68         palette_nofullbrights[255] = 0;
  69
  70         for (i = 0;i < 256;i++)
  71                 palette_onlyfullbrights[i] = palette_complete[0];
  72         for (i = fullbright_start;i < fullbright_end;i++)
  73                 palette_onlyfullbrights[i] = palette_complete[i];
  74         palette_onlyfullbrights[255] = 0;
  75
  76         for (i = 0;i < 256;i++)
  77                 palette_nocolormapnofullbrights[i] = palette_complete[i];
  78         for (i = pants_start;i < pants_end;i++)
  79                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  80         for (i = shirt_start;i < shirt_end;i++)
  81                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  82         for (i = fullbright_start;i < fullbright_end;i++)
  83                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  84         palette_nocolormapnofullbrights[255] = 0;
  85
  86         for (i = 0;i < 256;i++)
  87                 palette_nocolormap[i] = palette_complete[i];
  88         for (i = pants_start;i < pants_end;i++)
  89                 palette_nocolormap[i] = palette_complete[0];
  90         for (i = shirt_start;i < shirt_end;i++)
  91                 palette_nocolormap[i] = palette_complete[0];
  92         palette_nocolormap[255] = 0;
  93
  94         for (i = 0;i < 256;i++)
  95                 palette_pantsaswhite[i] = palette_complete[0];
  96         for (i = pants_start;i < pants_end;i++)
  97         {
  98                 if (i >= reversed_start && i < reversed_end)
  99                         palette_pantsaswhite[i] = palette_complete[15 - (i - pants_start)];
 100                 else
 101                         palette_pantsaswhite[i] = palette_complete[i - pants_start];
 102         }
 103
 104         for (i = 0;i < 256;i++)
 105                 palette_shirtaswhite[i] = palette_complete[0];
 106         for (i = shirt_start;i < shirt_end;i++)
 107         {
 108                 if (i >= reversed_start && i < reversed_end)
 109                         palette_shirtaswhite[i] = palette_complete[15 - (i - shirt_start)];
 110                 else
 111                         palette_shirtaswhite[i] = palette_complete[i - shirt_start];
 112         }
 113
 114         for (i = 0;i < 255;i++)
 115                 palette_alpha[i] = 0xFFFFFFFF;
 116         palette_alpha[255] = 0;
 117
 118         palette_font[0] = 0;
 119         for (i = 1;i < 255;i++)
 120                 palette_font[i] = palette_complete[i];
 121         palette_font[255] = 0;
 122 }
 123
 124 void BuildGammaTable8(float prescale, float gamma, float scale, float base, qbyte *out)
 125 {
 126         int i, adjusted;
 127         double invgamma, d;
 128
 129         gamma = bound(0.1, gamma, 5.0);
 130         if (gamma == 1) // LordHavoc: dodge the math
 131         {
 132                 for (i = 0;i < 256;i++)
 133                 {
 134                         adjusted = (int) (i * prescale * scale + base * 255.0);
 135                         out[i] = bound(0, adjusted, 255);
 136                 }
 137         }
 138         else
 139         {
 140                 invgamma = 1.0 / gamma;
 141                 prescale /= 255.0f;
 142                 for (i = 0;i < 256;i++)
 143                 {
 144                         d = pow((double) i * prescale, invgamma) * scale + base;
 145                         adjusted = (int) (255.0 * d);
 146                         out[i] = bound(0, adjusted, 255);
 147                 }
 148         }
 149 }
 150
 151 void BuildGammaTable16(float prescale, float gamma, float scale, float base, unsigned short *out)
 152 {
 153         int i, adjusted;
 154         double invgamma, d;
 155
 156         gamma = bound(0.1, gamma, 5.0);
 157         if (gamma == 1) // LordHavoc: dodge the math
 158         {
 159                 for (i = 0;i < 256;i++)
 160                 {
 161                         adjusted = (int) (i * 256.0 * prescale * scale + base * 65535.0);
 162                         out[i] = bound(0, adjusted, 65535);
 163                 }
 164         }
 165         else
 166         {
 167                 invgamma = 1.0 / gamma;
 168                 prescale /= 255.0f;
 169                 for (i = 0;i < 256;i++)
 170                 {
 171                         d = pow((double) i * prescale, invgamma) * scale + base;
 172                         adjusted = (int) (65535.0 * d);
 173                         out[i] = bound(0, adjusted, 65535);
 174                 }
 175         }
 176 }
 177
 178 void Palette_Init(void)
 179 {
 180         int i;
 181         float gamma, scale, base;
 182         qbyte *pal;
 183         qbyte temp[256];
 184         pal = (qbyte *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false);
 185         if (pal && fs_filesize >= 768)
 186         {
 187                 memcpy(host_basepal, pal, 765);
 188                 Mem_Free(pal);
 189         }
 190         else
 191         {
 192                 Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
 193                 memcpy(host_basepal, host_quakepal, 765);
 194         }
 195         host_basepal[765] = host_basepal[766] = host_basepal[767] = 0; // LordHavoc: force the transparent color to black
 196
 197         gamma = 1;
 198         scale = 1;
 199         base = 0;
 200 // COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
 201         i = COM_CheckParm("-texgamma");
 202         if (i)
 203                 gamma = atof(com_argv[i + 1]);
 204 // COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
 205         i = COM_CheckParm("-texcontrast");
 206         if (i)
 207                 scale = atof(com_argv[i + 1]);
 208 // COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
 209         i = COM_CheckParm("-texbrightness");
 210         if (i)
 211                 base = atof(com_argv[i + 1]);
 212         gamma = bound(0.01, gamma, 10.0);
 213         scale = bound(0.01, scale, 10.0);
 214         base = bound(0, base, 0.95);
 215
 216         BuildGammaTable8(1.0f, gamma, scale, base, temp);
 217         for (i = 3;i < 765;i++)
 218                 host_basepal[i] = temp[host_basepal[i]];
 219
 220         Palette_Setup8to24();
 221 }
 222