palette.c

   1
   2 #include "quakedef.h"
   3
   4 cvar_t r_colormap_palette = {0, "r_colormap_palette", "gfx/colormap_palette.lmp", "name of a palette lmp file to override the shirt/pants colors of player models. It consists of 16 shirt colors, 16 scoreboard shirt colors, 16 pants colors and 16 scoreboard pants colors"};
   5
   6 unsigned char palette_rgb[256][3];
   7 unsigned char palette_rgb_pantscolormap[16][3];
   8 unsigned char palette_rgb_shirtcolormap[16][3];
   9 unsigned char palette_rgb_pantsscoreboard[16][3];
  10 unsigned char palette_rgb_shirtscoreboard[16][3];
  11
  12 unsigned int palette_bgra_complete[256];
  13 unsigned int palette_bgra_font[256];
  14 unsigned int palette_bgra_alpha[256];
  15 unsigned int palette_bgra_nocolormap[256];
  16 unsigned int palette_bgra_nocolormapnofullbrights[256];
  17 unsigned int palette_bgra_nofullbrights[256];
  18 unsigned int palette_bgra_onlyfullbrights[256];
  19 unsigned int palette_bgra_pantsaswhite[256];
  20 unsigned int palette_bgra_shirtaswhite[256];
  21 unsigned int palette_bgra_transparent[256];
  22 unsigned int palette_bgra_embeddedpic[256];
  23 unsigned char palette_featureflags[256];
  24
  25 // 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.
  26 unsigned char host_quakepal[768] =
  27 {
  28 // marked: colormap colors: cb = (colormap & 0xF0);cb += (cb >= 128 && cb < 224) ? 4 : 12;
  29 // 0x0*
  30         0,0,0,        15,15,15,     31,31,31,     47,47,47,     63,63,63,     75,75,75,     91,91,91,     107,107,107,
  31         123,123,123,  139,139,139,  155,155,155,  171,171,171,  187,187,187,  203,203,203,  219,219,219,  235,235,235,
  32 // 0x1*                                                   0 ^
  33         15,11,7,      23,15,11,     31,23,11,     39,27,15,     47,35,19,     55,43,23,     63,47,23,     75,55,27,
  34         83,59,27,     91,67,31,     99,75,31,     107,83,31,    115,87,31,    123,95,35,    131,103,35,   143,111,35,
  35 // 0x2*                                                   1 ^
  36         11,11,15,     19,19,27,     27,27,39,     39,39,51,     47,47,63,     55,55,75,     63,63,87,     71,71,103,
  37         79,79,115,    91,91,127,    99,99,139,    107,107,151,  115,115,163,  123,123,175,  131,131,187,  139,139,203,
  38 // 0x3*                                                   2 ^
  39         0,0,0,        7,7,0,        11,11,0,      19,19,0,      27,27,0,      35,35,0,      43,43,7,      47,47,7,
  40         55,55,7,      63,63,7,      71,71,7,      75,75,11,     83,83,11,     91,91,11,     99,99,11,     107,107,15,
  41 // 0x4*                                                   3 ^
  42         7,0,0,        15,0,0,       23,0,0,       31,0,0,       39,0,0,       47,0,0,       55,0,0,       63,0,0,
  43         71,0,0,       79,0,0,       87,0,0,       95,0,0,       103,0,0,      111,0,0,      119,0,0,      127,0,0,
  44 // 0x5*                                                   4 ^
  45         19,19,0,      27,27,0,      35,35,0,      47,43,0,      55,47,0,      67,55,0,      75,59,7,      87,67,7,
  46         95,71,7,      107,75,11,    119,83,15,    131,87,19,    139,91,19,    151,95,27,    163,99,31,    175,103,35,
  47 // 0x6*                                                   5 ^
  48         35,19,7,      47,23,11,     59,31,15,     75,35,19,     87,43,23,     99,47,31,     115,55,35,    127,59,43,
  49         143,67,51,    159,79,51,    175,99,47,    191,119,47,   207,143,43,   223,171,39,   239,203,31,   255,243,27,
  50 // 0x7*                                                   6 ^
  51         11,7,0,       27,19,0,      43,35,15,     55,43,19,     71,51,27,     83,55,35,     99,63,43,     111,71,51,
  52         127,83,63,    139,95,71,    155,107,83,   167,123,95,   183,135,107,  195,147,123,  211,163,139,  227,179,151,
  53 // 0x8*                                                   7 ^        v 8
  54         171,139,163,  159,127,151,  147,115,135,  139,103,123,  127,91,111,   119,83,99,    107,75,87,    95,63,75,
  55         87,55,67,     75,47,55,     67,39,47,     55,31,35,     43,23,27,     35,19,19,     23,11,11,     15,7,7,
  56 // 0x9*                                                   9 v
  57         187,115,159,  175,107,143,  163,95,131,   151,87,119,   139,79,107,   127,75,95,    115,67,83,    107,59,75,
  58         95,51,63,     83,43,55,     71,35,43,     59,31,35,     47,23,27,     35,19,19,     23,11,11,     15,7,7,
  59 // 0xA*                                                  10 v
  60         219,195,187,  203,179,167,  191,163,155,  175,151,139,  163,135,123,  151,123,111,  135,111,95,   123,99,83,
  61         107,87,71,    95,75,59,     83,63,51,     67,51,39,     55,43,31,     39,31,23,     27,19,15,     15,11,7,
  62 // 0xB*                                                  11 v
  63         111,131,123,  103,123,111,  95,115,103,   87,107,95,    79,99,87,     71,91,79,     63,83,71,     55,75,63,
  64         47,67,55,     43,59,47,     35,51,39,     31,43,31,     23,35,23,     15,27,19,     11,19,11,     7,11,7,
  65 // 0xC*                                                  12 v
  66         255,243,27,   239,223,23,   219,203,19,   203,183,15,   187,167,15,   171,151,11,   155,131,7,    139,115,7,
  67         123,99,7,     107,83,0,     91,71,0,      75,55,0,      59,43,0,      43,31,0,      27,15,0,      11,7,0,
  68 // 0xD*                                                  13 v
  69         0,0,255,      11,11,239,    19,19,223,    27,27,207,    35,35,191,    43,43,175,    47,47,159,    47,47,143,
  70         47,47,127,    47,47,111,    47,47,95,     43,43,79,     35,35,63,     27,27,47,     19,19,31,     11,11,15,
  71 // 0xE*
  72         43,0,0,       59,0,0,       75,7,0,       95,7,0,       111,15,0,     127,23,7,     147,31,7,     163,39,11,
  73         183,51,15,    195,75,27,    207,99,43,    219,127,59,   227,151,79,   231,171,95,   239,191,119,  247,211,139,
  74 // 0xF*                                                  14 ^
  75         167,123,59,   183,155,55,   199,195,55,   231,227,87,   127,191,255,  171,231,255,  215,255,255,  103,0,0,
  76         139,0,0,      179,0,0,      215,0,0,      255,0,0,      255,243,147,  255,247,199,  255,255,255,  159,91,83
  77 }; //                                                    15 ^
  78
  79 void Palette_SetupSpecialPalettes(void)
  80 {
  81         int i;
  82         int fullbright_start, fullbright_end;
  83         int pants_start, pants_end;
  84         int shirt_start, shirt_end;
  85         int reversed_start, reversed_end;
  86         int transparentcolor;
  87         unsigned char *colormap;
  88         fs_offset_t filesize;
  89         union
  90         {
  91                 int i;
  92                 unsigned char b[4];
  93         }
  94         u;
  95
  96         colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true, &filesize);
  97         if (colormap && filesize >= 16385)
  98                 fullbright_start = 256 - colormap[16384];
  99         else
 100                 fullbright_start = 256;
 101         if (colormap)
 102                 Mem_Free(colormap);
 103         fullbright_end = 256;
 104         pants_start = 96;
 105         pants_end = 112;
 106         shirt_start = 16;
 107         shirt_end = 32;
 108         reversed_start = 128;
 109         reversed_end = 224;
 110         transparentcolor = 255;
 111
 112         for (i = 0;i < 256;i++)
 113                 palette_featureflags[i] = PALETTEFEATURE_STANDARD;
 114         for (i = reversed_start;i < reversed_end;i++)
 115                 palette_featureflags[i] = PALETTEFEATURE_REVERSED;
 116         for (i = pants_start;i < pants_end;i++)
 117                 palette_featureflags[i] = PALETTEFEATURE_PANTS;
 118         for (i = shirt_start;i < shirt_end;i++)
 119                 palette_featureflags[i] = PALETTEFEATURE_SHIRT;
 120         for (i = fullbright_start;i < fullbright_end;i++)
 121                 palette_featureflags[i] = PALETTEFEATURE_GLOW;
 122         palette_featureflags[0] = PALETTEFEATURE_ZERO;
 123         palette_featureflags[transparentcolor] = PALETTEFEATURE_TRANSPARENT;
 124
 125         for (i = 0;i < 256;i++)
 126                 palette_bgra_transparent[i] = palette_bgra_complete[i];
 127         palette_bgra_transparent[transparentcolor] = 0;
 128
 129         for (i = 0;i < fullbright_start;i++)
 130                 palette_bgra_nofullbrights[i] = palette_bgra_complete[i];
 131         for (i = fullbright_start;i < fullbright_end;i++)
 132                 palette_bgra_nofullbrights[i] = palette_bgra_complete[0];
 133
 134         for (i = 0;i < 256;i++)
 135                 palette_bgra_onlyfullbrights[i] = 0;
 136         for (i = fullbright_start;i < fullbright_end;i++)
 137                 palette_bgra_onlyfullbrights[i] = palette_bgra_complete[i];
 138
 139         for (i = 0;i < 256;i++)
 140                 palette_bgra_nocolormapnofullbrights[i] = palette_bgra_complete[i];
 141         for (i = pants_start;i < pants_end;i++)
 142                 palette_bgra_nocolormapnofullbrights[i] = 0;
 143         for (i = shirt_start;i < shirt_end;i++)
 144                 palette_bgra_nocolormapnofullbrights[i] = 0;
 145         for (i = fullbright_start;i < fullbright_end;i++)
 146                 palette_bgra_nocolormapnofullbrights[i] = 0;
 147
 148         for (i = 0;i < 256;i++)
 149                 palette_bgra_nocolormap[i] = palette_bgra_complete[i];
 150         for (i = pants_start;i < pants_end;i++)
 151                 palette_bgra_nocolormap[i] = 0;
 152         for (i = shirt_start;i < shirt_end;i++)
 153                 palette_bgra_nocolormap[i] = 0;
 154
 155         for (i = 0;i < 256;i++)
 156                 palette_bgra_pantsaswhite[i] = 0;
 157         for (i = pants_start;i < pants_end;i++)
 158         {
 159                 if (i >= reversed_start && i < reversed_end)
 160                         palette_bgra_pantsaswhite[i] = palette_bgra_complete[15 - (i - pants_start)];
 161                 else
 162                         palette_bgra_pantsaswhite[i] = palette_bgra_complete[i - pants_start];
 163         }
 164
 165         for (i = 0;i < 256;i++)
 166                 palette_bgra_shirtaswhite[i] = 0;
 167         for (i = shirt_start;i < shirt_end;i++)
 168         {
 169                 if (i >= reversed_start && i < reversed_end)
 170                         palette_bgra_shirtaswhite[i] = palette_bgra_complete[15 - (i - shirt_start)];
 171                 else
 172                         palette_bgra_shirtaswhite[i] = palette_bgra_complete[i - shirt_start];
 173         }
 174
 175         for (i = 0;i < 256;i++)
 176                 palette_bgra_alpha[i] = 0xFFFFFFFF;
 177         u.i = 0xFFFFFFFF;
 178         u.b[3] = 0;
 179         palette_bgra_alpha[transparentcolor] = u.i;
 180
 181         for (i = 0;i < 256;i++)
 182                 palette_bgra_font[i] = palette_bgra_complete[i];
 183         palette_bgra_font[0] = 0;
 184 }
 185
 186 void BuildGammaTable8(float prescale, float gamma, float scale, float base, float contrastboost, unsigned char *out, int rampsize)
 187 {
 188         int i, adjusted;
 189         double invgamma;
 190         double t, d;
 191
 192         invgamma = 1.0 / gamma;
 193         prescale /= (double) (rampsize - 1);
 194         for (i = 0;i < rampsize;i++)
 195         {
 196                 t = i * prescale;
 197                 d = ((contrastboost - 1) * t + 1);
 198                 if(d == 0)
 199                         t = 0; // we could just as well assume 1 here, depending on which side of the division by zero we want to be
 200                 else
 201                         t = contrastboost * t / d;
 202                 adjusted = (int) (255.0 * (pow(t, invgamma) * scale + base) + 0.5);
 203                 out[i] = bound(0, adjusted, 255);
 204         }
 205 }
 206
 207 void BuildGammaTable16(float prescale, float gamma, float scale, float base, float contrastboost, unsigned short *out, int rampsize)
 208 {
 209         int i, adjusted;
 210         double invgamma;
 211         double t;
 212
 213         invgamma = 1.0 / gamma;
 214         prescale /= (double) (rampsize - 1);
 215         for (i = 0;i < rampsize;i++)
 216         {
 217                 t = i * prescale;
 218                 t = contrastboost * t / ((contrastboost - 1) * t + 1);
 219                 adjusted = (int) (65535.0 * (pow(t, invgamma) * scale + base) + 0.5);
 220                 out[i] = bound(0, adjusted, 65535);
 221         }
 222 }
 223
 224 void Palette_Shutdown(void)
 225 {
 226 }
 227
 228 void Palette_NewMap(void)
 229 {
 230 }
 231
 232 void Palette_Load(void)
 233 {
 234         int i;
 235         unsigned char *out;
 236         float gamma, scale, base;
 237         fs_offset_t filesize;
 238         unsigned char *palfile;
 239         unsigned char texturegammaramp[256];
 240         union
 241         {
 242                 unsigned char b[4];
 243                 unsigned int i;
 244         }
 245         bgra;
 246
 247         gamma = 1;
 248         scale = 1;
 249         base = 0;
 250 // COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
 251         i = COM_CheckParm("-texgamma");
 252         if (i)
 253                 gamma = atof(com_argv[i + 1]);
 254 // COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
 255         i = COM_CheckParm("-texcontrast");
 256         if (i)
 257                 scale = atof(com_argv[i + 1]);
 258 // COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
 259         i = COM_CheckParm("-texbrightness");
 260         if (i)
 261                 base = atof(com_argv[i + 1]);
 262         gamma = bound(0.01, gamma, 10.0);
 263         scale = bound(0.01, scale, 10.0);
 264         base = bound(0, base, 0.95);
 265
 266         BuildGammaTable8(1.0f, gamma, scale, base, 1, texturegammaramp, 256);
 267
 268         palfile = (unsigned char *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false, &filesize);
 269         if (palfile && filesize >= 768)
 270                 memcpy(palette_rgb, palfile, 768);
 271         else
 272         {
 273                 Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
 274                 memcpy(palette_rgb, host_quakepal, 768);
 275         }
 276         if (palfile)
 277                 Mem_Free(palfile);
 278
 279         out = (unsigned char *) palette_bgra_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
 280         for (i = 0;i < 256;i++)
 281         {
 282                 out[i*4+2] = texturegammaramp[palette_rgb[i][0]];
 283                 out[i*4+1] = texturegammaramp[palette_rgb[i][1]];
 284                 out[i*4+0] = texturegammaramp[palette_rgb[i][2]];
 285                 out[i*4+3] = 255;
 286         }
 287
 288         if(*r_colormap_palette.string)
 289                 palfile = (unsigned char *)FS_LoadFile (r_colormap_palette.string, tempmempool, false, &filesize);
 290         else
 291                 palfile = NULL;
 292
 293         if (palfile && filesize >= 48*2)
 294         {
 295                 memcpy(palette_rgb_shirtcolormap[0], palfile, 48);
 296                 memcpy(palette_rgb_shirtscoreboard[0], palfile + 48, 48);
 297         }
 298         else
 299         {
 300                 for(i = 0;i < 16;i++)
 301                 {
 302                         VectorCopy(palette_rgb[(i << 4) | ((i >= 8 && i <= 13) ? 0x04 : 0x0C)], palette_rgb_shirtcolormap[i]);
 303                         VectorCopy(palette_rgb[(i << 4) | 0x08], palette_rgb_shirtscoreboard[i]);
 304                 }
 305         }
 306
 307         if (palfile && filesize >= 48*4)
 308         {
 309                 memcpy(palette_rgb_pantscolormap[0], palfile + 48*2, 48);
 310                 memcpy(palette_rgb_pantsscoreboard[0], palfile + 48*3, 48);
 311         }
 312         else
 313         {
 314                 memcpy(palette_rgb_pantscolormap, palette_rgb_shirtcolormap, sizeof(palette_rgb_pantscolormap));
 315                 memcpy(palette_rgb_pantsscoreboard, palette_rgb_shirtscoreboard, sizeof(palette_rgb_pantsscoreboard));
 316         }
 317
 318         if(palfile)
 319                 Mem_Free(palfile);
 320
 321         memset(palette_bgra_embeddedpic, 0, sizeof(palette_bgra_embeddedpic));
 322         for (i = '1';i <= '7';i++)
 323         {
 324                 Vector4Set(bgra.b, 255, 255, 255, (i - '0') * 255 / 7);
 325                 palette_bgra_embeddedpic[i] = bgra.i;
 326         }
 327
 328         Palette_SetupSpecialPalettes();
 329 }
 330
 331 void Palette_Init(void)
 332 {
 333         R_RegisterModule("Palette", Palette_Load, Palette_Shutdown, Palette_NewMap);
 334         Cvar_RegisterVariable(&r_colormap_palette);
 335         Palette_Load();
 336 }