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