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 // marked: colormap colors: cb = (e->render.colormap & 0xF0);cb += (cb >= 128 && cb < 224) ? 4 : 12;
  19 // 0x0*
  20         0,0,0,        15,15,15,     31,31,31,     47,47,47,     63,63,63,     75,75,75,     91,91,91,     107,107,107,
  21         123,123,123,  139,139,139,  155,155,155,  171,171,171,  187,187,187,  203,203,203,  219,219,219,  235,235,235,
  22 // 0x1*                                                   0 ^
  23         15,11,7,      23,15,11,     31,23,11,     39,27,15,     47,35,19,     55,43,23,     63,47,23,     75,55,27,
  24         83,59,27,     91,67,31,     99,75,31,     107,83,31,    115,87,31,    123,95,35,    131,103,35,   143,111,35,
  25 // 0x2*                                                   1 ^
  26         11,11,15,     19,19,27,     27,27,39,     39,39,51,     47,47,63,     55,55,75,     63,63,87,     71,71,103,
  27         79,79,115,    91,91,127,    99,99,139,    107,107,151,  115,115,163,  123,123,175,  131,131,187,  139,139,203,
  28 // 0x3*                                                   2 ^
  29         0,0,0,        7,7,0,        11,11,0,      19,19,0,      27,27,0,      35,35,0,      43,43,7,      47,47,7,
  30         55,55,7,      63,63,7,      71,71,7,      75,75,11,     83,83,11,     91,91,11,     99,99,11,     107,107,15,
  31 // 0x4*                                                   3 ^
  32         7,0,0,        15,0,0,       23,0,0,       31,0,0,       39,0,0,       47,0,0,       55,0,0,       63,0,0,
  33         71,0,0,       79,0,0,       87,0,0,       95,0,0,       103,0,0,      111,0,0,      119,0,0,      127,0,0,
  34 // 0x5*                                                   4 ^
  35         19,19,0,      27,27,0,      35,35,0,      47,43,0,      55,47,0,      67,55,0,      75,59,7,      87,67,7,
  36         95,71,7,      107,75,11,    119,83,15,    131,87,19,    139,91,19,    151,95,27,    163,99,31,    175,103,35,
  37 // 0x6*                                                   5 ^
  38         35,19,7,      47,23,11,     59,31,15,     75,35,19,     87,43,23,     99,47,31,     115,55,35,    127,59,43,
  39         143,67,51,    159,79,51,    175,99,47,    191,119,47,   207,143,43,   223,171,39,   239,203,31,   255,243,27,
  40 // 0x7*                                                   6 ^
  41         11,7,0,       27,19,0,      43,35,15,     55,43,19,     71,51,27,     83,55,35,     99,63,43,     111,71,51,
  42         127,83,63,    139,95,71,    155,107,83,   167,123,95,   183,135,107,  195,147,123,  211,163,139,  227,179,151,
  43 // 0x8*                                                   7 ^        v 8
  44         171,139,163,  159,127,151,  147,115,135,  139,103,123,  127,91,111,   119,83,99,    107,75,87,    95,63,75,
  45         87,55,67,     75,47,55,     67,39,47,     55,31,35,     43,23,27,     35,19,19,     23,11,11,     15,7,7,
  46 // 0x9*                                                   9 v
  47         187,115,159,  175,107,143,  163,95,131,   151,87,119,   139,79,107,   127,75,95,    115,67,83,    107,59,75,
  48         95,51,63,     83,43,55,     71,35,43,     59,31,35,     47,23,27,     35,19,19,     23,11,11,     15,7,7,
  49 // 0xA*                                                  10 v
  50         219,195,187,  203,179,167,  191,163,155,  175,151,139,  163,135,123,  151,123,111,  135,111,95,   123,99,83,
  51         107,87,71,    95,75,59,     83,63,51,     67,51,39,     55,43,31,     39,31,23,     27,19,15,     15,11,7,
  52 // 0xB*                                                  11 v
  53         111,131,123,  103,123,111,  95,115,103,   87,107,95,    79,99,87,     71,91,79,     63,83,71,     55,75,63,
  54         47,67,55,     43,59,47,     35,51,39,     31,43,31,     23,35,23,     15,27,19,     11,19,11,     7,11,7,
  55 // 0xC*                                                  12 v
  56         255,243,27,   239,223,23,   219,203,19,   203,183,15,   187,167,15,   171,151,11,   155,131,7,    139,115,7,
  57         123,99,7,     107,83,0,     91,71,0,      75,55,0,      59,43,0,      43,31,0,      27,15,0,      11,7,0,
  58 // 0xD*                                                  13 v
  59         0,0,255,      11,11,239,    19,19,223,    27,27,207,    35,35,191,    43,43,175,    47,47,159,    47,47,143,
  60         47,47,127,    47,47,111,    47,47,95,     43,43,79,     35,35,63,     27,27,47,     19,19,31,     11,11,15,
  61 // 0xE*
  62         43,0,0,       59,0,0,       75,7,0,       95,7,0,       111,15,0,     127,23,7,     147,31,7,     163,39,11,
  63         183,51,15,    195,75,27,    207,99,43,    219,127,59,   227,151,79,   231,171,95,   239,191,119,  247,211,139,
  64 // 0xF*                                                  14 ^
  65         167,123,59,   183,155,55,   199,195,55,   231,227,87,   127,191,255,  171,231,255,  215,255,255,  103,0,0,
  66         139,0,0,      179,0,0,      215,0,0,      255,0,0,      255,243,147,  255,247,199,  255,255,255,  159,91,83
  67 }; //                                                    15 ^
  68
  69 void Palette_SetupSpecialPalettes(void)
  70 {
  71         int i;
  72         int fullbright_start, fullbright_end;
  73         int pants_start, pants_end;
  74         int shirt_start, shirt_end;
  75         int reversed_start, reversed_end;
  76         int transparentcolor;
  77         unsigned char *colormap;
  78         fs_offset_t filesize;
  79
  80         colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true, &filesize);
  81         if (colormap && filesize >= 16385)
  82                 fullbright_start = 256 - colormap[16384];
  83         else
  84                 fullbright_start = 256;
  85         if (colormap)
  86                 Mem_Free(colormap);
  87         fullbright_end = 256;
  88         pants_start = 96;
  89         pants_end = 112;
  90         shirt_start = 16;
  91         shirt_end = 32;
  92         reversed_start = 128;
  93         reversed_end = 224;
  94         transparentcolor = 255;
  95
  96         for (i = 0;i < 256;i++)
  97                 palette_transparent[i] = palette_complete[i];
  98         palette_transparent[transparentcolor] = 0;
  99
 100         for (i = 0;i < fullbright_start;i++)
 101                 palette_nofullbrights[i] = palette_complete[i];
 102         for (i = fullbright_start;i < fullbright_end;i++)
 103                 palette_nofullbrights[i] = palette_complete[0];
 104
 105         for (i = 0;i < 256;i++)
 106                 palette_onlyfullbrights[i] = palette_complete[0];
 107         for (i = fullbright_start;i < fullbright_end;i++)
 108                 palette_onlyfullbrights[i] = palette_complete[i];
 109
 110         for (i = 0;i < 256;i++)
 111                 palette_nocolormapnofullbrights[i] = palette_complete[i];
 112         for (i = pants_start;i < pants_end;i++)
 113                 palette_nocolormapnofullbrights[i] = palette_complete[0];
 114         for (i = shirt_start;i < shirt_end;i++)
 115                 palette_nocolormapnofullbrights[i] = palette_complete[0];
 116         for (i = fullbright_start;i < fullbright_end;i++)
 117                 palette_nocolormapnofullbrights[i] = palette_complete[0];
 118
 119         for (i = 0;i < 256;i++)
 120                 palette_nocolormap[i] = palette_complete[i];
 121         for (i = pants_start;i < pants_end;i++)
 122                 palette_nocolormap[i] = palette_complete[0];
 123         for (i = shirt_start;i < shirt_end;i++)
 124                 palette_nocolormap[i] = palette_complete[0];
 125
 126         for (i = 0;i < 256;i++)
 127                 palette_pantsaswhite[i] = palette_complete[0];
 128         for (i = pants_start;i < pants_end;i++)
 129         {
 130                 if (i >= reversed_start && i < reversed_end)
 131                         palette_pantsaswhite[i] = palette_complete[15 - (i - pants_start)];
 132                 else
 133                         palette_pantsaswhite[i] = palette_complete[i - pants_start];
 134         }
 135
 136         for (i = 0;i < 256;i++)
 137                 palette_shirtaswhite[i] = palette_complete[0];
 138         for (i = shirt_start;i < shirt_end;i++)
 139         {
 140                 if (i >= reversed_start && i < reversed_end)
 141                         palette_shirtaswhite[i] = palette_complete[15 - (i - shirt_start)];
 142                 else
 143                         palette_shirtaswhite[i] = palette_complete[i - shirt_start];
 144         }
 145
 146         for (i = 0;i < 256;i++)
 147                 palette_alpha[i] = 0xFFFFFFFF;
 148         palette_alpha[transparentcolor] = 0;
 149
 150         for (i = 0;i < 256;i++)
 151                 palette_font[i] = palette_complete[i];
 152         palette_font[0] = 0;
 153 }
 154
 155 void BuildGammaTable8(float prescale, float gamma, float scale, float base, unsigned char *out, int rampsize)
 156 {
 157         int i, adjusted;
 158         double invgamma;
 159
 160         invgamma = 1.0 / gamma;
 161         prescale /= (double) (rampsize - 1);
 162         for (i = 0;i < rampsize;i++)
 163         {
 164                 adjusted = (int) (255.0 * (pow((double) i * prescale, invgamma) * scale + base) + 0.5);
 165                 out[i] = bound(0, adjusted, 255);
 166         }
 167 }
 168
 169 void BuildGammaTable16(float prescale, float gamma, float scale, float base, unsigned short *out, int rampsize)
 170 {
 171         int i, adjusted;
 172         double invgamma;
 173
 174         invgamma = 1.0 / gamma;
 175         prescale /= (double) (rampsize - 1);
 176         for (i = 0;i < rampsize;i++)
 177         {
 178                 adjusted = (int) (65535.0 * (pow((double) i * prescale, invgamma) * scale + base) + 0.5);
 179                 out[i] = bound(0, adjusted, 65535);
 180         }
 181 }
 182
 183 void Palette_Init(void)
 184 {
 185         int i;
 186         float gamma, scale, base;
 187         fs_offset_t filesize;
 188         unsigned char *in, *out, *palfile;
 189         unsigned char texturegammaramp[256];
 190
 191         gamma = 1;
 192         scale = 1;
 193         base = 0;
 194 // COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
 195         i = COM_CheckParm("-texgamma");
 196         if (i)
 197                 gamma = atof(com_argv[i + 1]);
 198 // COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
 199         i = COM_CheckParm("-texcontrast");
 200         if (i)
 201                 scale = atof(com_argv[i + 1]);
 202 // COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
 203         i = COM_CheckParm("-texbrightness");
 204         if (i)
 205                 base = atof(com_argv[i + 1]);
 206         gamma = bound(0.01, gamma, 10.0);
 207         scale = bound(0.01, scale, 10.0);
 208         base = bound(0, base, 0.95);
 209
 210         BuildGammaTable8(1.0f, gamma, scale, base, texturegammaramp, 256);
 211
 212         palfile = (unsigned char *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false, &filesize);
 213         if (palfile && filesize >= 768)
 214                 in = palfile;
 215         else
 216         {
 217                 Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
 218                 in = host_quakepal;
 219         }
 220         out = (unsigned char *) palette_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
 221         for (i = 0;i < 256;i++)
 222         {
 223                 *out++ = texturegammaramp[*in++];
 224                 *out++ = texturegammaramp[*in++];
 225                 *out++ = texturegammaramp[*in++];
 226                 *out++ = 255;
 227         }
 228         if (palfile)
 229                 Mem_Free(palfile);
 230
 231         Palette_SetupSpecialPalettes();
 232 }
 233