palette.c

   1
   2 #include "quakedef.h"
   3
   4 unsigned int palette_complete[256];
   5 unsigned int palette_font[256];
   6 unsigned int palette_alpha[256];
   7 unsigned int palette_nocolormap[256];
   8 unsigned int palette_nocolormapnofullbrights[256];
   9 unsigned int palette_nofullbrights[256];
  10 unsigned int palette_onlyfullbrights[256];
  11 unsigned int palette_pantsaswhite[256];
  12 unsigned int palette_shirtaswhite[256];
  13 unsigned int palette_transparent[256];
  14
  15 // 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.
  16 unsigned char host_quakepal[768] =
  17 {
  18 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,
  19 139,107,107,151,115,115,163,123,123,175,131,131,187,139,139,203,0,0,0,7,7,0,11,11,0,19,19,0,27,27,0,35,35,0,43,43,7,47,47,7,55,55,7,63,63,7,71,71,7,75,75,11,83,83,11,91,91,11,99,99,11,107,107,15,7,0,0,15,0,0,23,0,0,31,0,0,39,0,0,47,0,0,55,0,0,63,0,0,71,0,0,79,0,0,87,0,0,95,0,0,103,0,0,111,0,0,119,0,0,127,0,0,19,19,0,27,27,0,35,35,0,47,43,0,55,47,0,67,
  20 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,
  21 171,139,163,159,127,151,147,115,135,139,103,123,127,91,111,119,83,99,107,75,87,95,63,75,87,55,67,75,47,55,67,39,47,55,31,35,43,23,27,35,19,19,23,11,11,15,7,7,187,115,159,175,107,143,163,95,131,151,87,119,139,79,107,127,75,95,115,67,83,107,59,75,95,51,63,83,43,55,71,35,43,59,31,35,47,23,27,35,19,19,23,11,11,15,7,7,219,195,187,203,179,167,191,163,155,175,151,139,163,135,123,151,123,111,135,111,95,123,99,83,107,87,71,95,75,59,83,63,
  22 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,
  23 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
  24 };
  25
  26 void Palette_SetupSpecialPalettes(void)
  27 {
  28         int i;
  29         int fullbright_start, fullbright_end;
  30         int pants_start, pants_end;
  31         int shirt_start, shirt_end;
  32         int reversed_start, reversed_end;
  33         int transparentcolor;
  34         unsigned char *colormap;
  35         fs_offset_t filesize;
  36
  37         colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true, &filesize);
  38         if (colormap && filesize >= 16385)
  39                 fullbright_start = 256 - colormap[16384];
  40         else
  41                 fullbright_start = 256;
  42         if (colormap)
  43                 Mem_Free(colormap);
  44         fullbright_end = 256;
  45         pants_start = 96;
  46         pants_end = 112;
  47         shirt_start = 16;
  48         shirt_end = 32;
  49         reversed_start = 128;
  50         reversed_end = 224;
  51         transparentcolor = 255;
  52
  53         for (i = 0;i < 256;i++)
  54                 palette_transparent[i] = palette_complete[i];
  55         palette_transparent[transparentcolor] = 0;
  56
  57         for (i = 0;i < fullbright_start;i++)
  58                 palette_nofullbrights[i] = palette_complete[i];
  59         for (i = fullbright_start;i < fullbright_end;i++)
  60                 palette_nofullbrights[i] = palette_complete[0];
  61
  62         for (i = 0;i < 256;i++)
  63                 palette_onlyfullbrights[i] = palette_complete[0];
  64         for (i = fullbright_start;i < fullbright_end;i++)
  65                 palette_onlyfullbrights[i] = palette_complete[i];
  66
  67         for (i = 0;i < 256;i++)
  68                 palette_nocolormapnofullbrights[i] = palette_complete[i];
  69         for (i = pants_start;i < pants_end;i++)
  70                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  71         for (i = shirt_start;i < shirt_end;i++)
  72                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  73         for (i = fullbright_start;i < fullbright_end;i++)
  74                 palette_nocolormapnofullbrights[i] = palette_complete[0];
  75
  76         for (i = 0;i < 256;i++)
  77                 palette_nocolormap[i] = palette_complete[i];
  78         for (i = pants_start;i < pants_end;i++)
  79                 palette_nocolormap[i] = palette_complete[0];
  80         for (i = shirt_start;i < shirt_end;i++)
  81                 palette_nocolormap[i] = palette_complete[0];
  82
  83         for (i = 0;i < 256;i++)
  84                 palette_pantsaswhite[i] = palette_complete[0];
  85         for (i = pants_start;i < pants_end;i++)
  86         {
  87                 if (i >= reversed_start && i < reversed_end)
  88                         palette_pantsaswhite[i] = palette_complete[15 - (i - pants_start)];
  89                 else
  90                         palette_pantsaswhite[i] = palette_complete[i - pants_start];
  91         }
  92
  93         for (i = 0;i < 256;i++)
  94                 palette_shirtaswhite[i] = palette_complete[0];
  95         for (i = shirt_start;i < shirt_end;i++)
  96         {
  97                 if (i >= reversed_start && i < reversed_end)
  98                         palette_shirtaswhite[i] = palette_complete[15 - (i - shirt_start)];
  99                 else
 100                         palette_shirtaswhite[i] = palette_complete[i - shirt_start];
 101         }
 102
 103         for (i = 0;i < 256;i++)
 104                 palette_alpha[i] = 0xFFFFFFFF;
 105         palette_alpha[transparentcolor] = 0;
 106
 107         for (i = 0;i < 256;i++)
 108                 palette_font[i] = palette_complete[i];
 109         palette_font[0] = 0;
 110 }
 111
 112 void BuildGammaTable8(float prescale, float gamma, float scale, float base, unsigned char *out)
 113 {
 114         int i, adjusted;
 115         double invgamma, d;
 116
 117         gamma = bound(0.1, gamma, 5.0);
 118         if (gamma == 1) // LordHavoc: dodge the math
 119         {
 120                 for (i = 0;i < 256;i++)
 121                 {
 122                         adjusted = (int) (i * prescale * scale + base * 255.0);
 123                         out[i] = bound(0, adjusted, 255);
 124                 }
 125         }
 126         else
 127         {
 128                 invgamma = 1.0 / gamma;
 129                 prescale /= 255.0f;
 130                 for (i = 0;i < 256;i++)
 131                 {
 132                         d = pow((double) i * prescale, invgamma) * scale + base;
 133                         adjusted = (int) (255.0 * d);
 134                         out[i] = bound(0, adjusted, 255);
 135                 }
 136         }
 137 }
 138
 139 void BuildGammaTable16(float prescale, float gamma, float scale, float base, unsigned short *out)
 140 {
 141         int i, adjusted;
 142         double invgamma, d;
 143
 144         gamma = bound(0.1, gamma, 5.0);
 145         if (gamma == 1) // LordHavoc: dodge the math
 146         {
 147                 for (i = 0;i < 256;i++)
 148                 {
 149                         adjusted = (int) (i * 256.0 * prescale * scale + base * 65535.0);
 150                         out[i] = bound(0, adjusted, 65535);
 151                 }
 152         }
 153         else
 154         {
 155                 invgamma = 1.0 / gamma;
 156                 prescale /= 255.0f;
 157                 for (i = 0;i < 256;i++)
 158                 {
 159                         d = pow((double) i * prescale, invgamma) * scale + base;
 160                         adjusted = (int) (65535.0 * d);
 161                         out[i] = bound(0, adjusted, 65535);
 162                 }
 163         }
 164 }
 165
 166 void Palette_Init(void)
 167 {
 168         int i;
 169         float gamma, scale, base;
 170         fs_offset_t filesize;
 171         unsigned char *in, *out, *palfile;
 172         unsigned char texturegammaramp[256];
 173
 174         gamma = 1;
 175         scale = 1;
 176         base = 0;
 177 // COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
 178         i = COM_CheckParm("-texgamma");
 179         if (i)
 180                 gamma = atof(com_argv[i + 1]);
 181 // COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
 182         i = COM_CheckParm("-texcontrast");
 183         if (i)
 184                 scale = atof(com_argv[i + 1]);
 185 // COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
 186         i = COM_CheckParm("-texbrightness");
 187         if (i)
 188                 base = atof(com_argv[i + 1]);
 189         gamma = bound(0.01, gamma, 10.0);
 190         scale = bound(0.01, scale, 10.0);
 191         base = bound(0, base, 0.95);
 192
 193         BuildGammaTable8(1.0f, gamma, scale, base, texturegammaramp);
 194
 195         palfile = (unsigned char *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false, &filesize);
 196         if (palfile && filesize >= 768)
 197                 in = palfile;
 198         else
 199         {
 200                 Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
 201                 in = host_quakepal;
 202         }
 203         out = (unsigned char *) palette_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
 204         for (i = 0;i < 256;i++)
 205         {
 206                 *out++ = texturegammaramp[*in++];
 207                 *out++ = texturegammaramp[*in++];
 208                 *out++ = texturegammaramp[*in++];
 209                 *out++ = 255;
 210         }
 211         if (palfile)
 212                 Mem_Free(palfile);
 213
 214         Palette_SetupSpecialPalettes();
 215 }
 216