palette.c

   1
   2 #include "quakedef.h"
   3 #include "image.h"
   4
   5 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"};
   6
   7 unsigned char palette_rgb[256][3];
   8 unsigned char palette_rgb_pantscolormap[16][3];
   9 unsigned char palette_rgb_shirtcolormap[16][3];
  10 unsigned char palette_rgb_pantsscoreboard[16][3];
  11 unsigned char palette_rgb_shirtscoreboard[16][3];
  12
  13 unsigned int palette_bgra_complete[256];
  14 unsigned int palette_bgra_font[256];
  15 unsigned int palette_bgra_alpha[256];
  16 unsigned int palette_bgra_nocolormap[256];
  17 unsigned int palette_bgra_nocolormapnofullbrights[256];
  18 unsigned int palette_bgra_nofullbrights[256];
  19 unsigned int palette_bgra_onlyfullbrights[256];
  20 unsigned int palette_bgra_pantsaswhite[256];
  21 unsigned int palette_bgra_shirtaswhite[256];
  22 unsigned int palette_bgra_transparent[256];
  23 unsigned int palette_bgra_embeddedpic[256];
  24 unsigned char palette_featureflags[256];
  25
  26 unsigned int q2palette_bgra_complete[256];
  27
  28 // 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.
  29 unsigned char host_quakepal[768] =
  30 {
  31 // marked: colormap colors: cb = (colormap & 0xF0);cb += (cb >= 128 && cb < 224) ? 4 : 12;
  32 // 0x0*
  33         0,0,0,        15,15,15,     31,31,31,     47,47,47,     63,63,63,     75,75,75,     91,91,91,     107,107,107,
  34         123,123,123,  139,139,139,  155,155,155,  171,171,171,  187,187,187,  203,203,203,  219,219,219,  235,235,235,
  35 // 0x1*                                                   0 ^
  36         15,11,7,      23,15,11,     31,23,11,     39,27,15,     47,35,19,     55,43,23,     63,47,23,     75,55,27,
  37         83,59,27,     91,67,31,     99,75,31,     107,83,31,    115,87,31,    123,95,35,    131,103,35,   143,111,35,
  38 // 0x2*                                                   1 ^
  39         11,11,15,     19,19,27,     27,27,39,     39,39,51,     47,47,63,     55,55,75,     63,63,87,     71,71,103,
  40         79,79,115,    91,91,127,    99,99,139,    107,107,151,  115,115,163,  123,123,175,  131,131,187,  139,139,203,
  41 // 0x3*                                                   2 ^
  42         0,0,0,        7,7,0,        11,11,0,      19,19,0,      27,27,0,      35,35,0,      43,43,7,      47,47,7,
  43         55,55,7,      63,63,7,      71,71,7,      75,75,11,     83,83,11,     91,91,11,     99,99,11,     107,107,15,
  44 // 0x4*                                                   3 ^
  45         7,0,0,        15,0,0,       23,0,0,       31,0,0,       39,0,0,       47,0,0,       55,0,0,       63,0,0,
  46         71,0,0,       79,0,0,       87,0,0,       95,0,0,       103,0,0,      111,0,0,      119,0,0,      127,0,0,
  47 // 0x5*                                                   4 ^
  48         19,19,0,      27,27,0,      35,35,0,      47,43,0,      55,47,0,      67,55,0,      75,59,7,      87,67,7,
  49         95,71,7,      107,75,11,    119,83,15,    131,87,19,    139,91,19,    151,95,27,    163,99,31,    175,103,35,
  50 // 0x6*                                                   5 ^
  51         35,19,7,      47,23,11,     59,31,15,     75,35,19,     87,43,23,     99,47,31,     115,55,35,    127,59,43,
  52         143,67,51,    159,79,51,    175,99,47,    191,119,47,   207,143,43,   223,171,39,   239,203,31,   255,243,27,
  53 // 0x7*                                                   6 ^
  54         11,7,0,       27,19,0,      43,35,15,     55,43,19,     71,51,27,     83,55,35,     99,63,43,     111,71,51,
  55         127,83,63,    139,95,71,    155,107,83,   167,123,95,   183,135,107,  195,147,123,  211,163,139,  227,179,151,
  56 // 0x8*                                                   7 ^        v 8
  57         171,139,163,  159,127,151,  147,115,135,  139,103,123,  127,91,111,   119,83,99,    107,75,87,    95,63,75,
  58         87,55,67,     75,47,55,     67,39,47,     55,31,35,     43,23,27,     35,19,19,     23,11,11,     15,7,7,
  59 // 0x9*                                                   9 v
  60         187,115,159,  175,107,143,  163,95,131,   151,87,119,   139,79,107,   127,75,95,    115,67,83,    107,59,75,
  61         95,51,63,     83,43,55,     71,35,43,     59,31,35,     47,23,27,     35,19,19,     23,11,11,     15,7,7,
  62 // 0xA*                                                  10 v
  63         219,195,187,  203,179,167,  191,163,155,  175,151,139,  163,135,123,  151,123,111,  135,111,95,   123,99,83,
  64         107,87,71,    95,75,59,     83,63,51,     67,51,39,     55,43,31,     39,31,23,     27,19,15,     15,11,7,
  65 // 0xB*                                                  11 v
  66         111,131,123,  103,123,111,  95,115,103,   87,107,95,    79,99,87,     71,91,79,     63,83,71,     55,75,63,
  67         47,67,55,     43,59,47,     35,51,39,     31,43,31,     23,35,23,     15,27,19,     11,19,11,     7,11,7,
  68 // 0xC*                                                  12 v
  69         255,243,27,   239,223,23,   219,203,19,   203,183,15,   187,167,15,   171,151,11,   155,131,7,    139,115,7,
  70         123,99,7,     107,83,0,     91,71,0,      75,55,0,      59,43,0,      43,31,0,      27,15,0,      11,7,0,
  71 // 0xD*                                                  13 v
  72         0,0,255,      11,11,239,    19,19,223,    27,27,207,    35,35,191,    43,43,175,    47,47,159,    47,47,143,
  73         47,47,127,    47,47,111,    47,47,95,     43,43,79,     35,35,63,     27,27,47,     19,19,31,     11,11,15,
  74 // 0xE*
  75         43,0,0,       59,0,0,       75,7,0,       95,7,0,       111,15,0,     127,23,7,     147,31,7,     163,39,11,
  76         183,51,15,    195,75,27,    207,99,43,    219,127,59,   227,151,79,   231,171,95,   239,191,119,  247,211,139,
  77 // 0xF*                                                  14 ^
  78         167,123,59,   183,155,55,   199,195,55,   231,227,87,   127,191,255,  171,231,255,  215,255,255,  103,0,0,
  79         139,0,0,      179,0,0,      215,0,0,      255,0,0,      255,243,147,  255,247,199,  255,255,255,  159,91,83
  80 }; //                                                    15 ^
  81
  82 static void Palette_SetupSpecialPalettes(void)
  83 {
  84         int i;
  85         int fullbright_start, fullbright_end;
  86         int pants_start, pants_end;
  87         int shirt_start, shirt_end;
  88         int reversed_start, reversed_end;
  89         int transparentcolor;
  90         unsigned char *colormap;
  91         fs_offset_t filesize;
  92         union
  93         {
  94                 int i;
  95                 unsigned char b[4];
  96         }
  97         u;
  98
  99         colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true, &filesize);
 100         if (colormap && filesize >= 16385)
 101                 fullbright_start = 256 - colormap[16384];
 102         else
 103                 fullbright_start = 256;
 104         if (colormap)
 105                 Mem_Free(colormap);
 106         fullbright_end = 256;
 107         pants_start = 96;
 108         pants_end = 112;
 109         shirt_start = 16;
 110         shirt_end = 32;
 111         reversed_start = 128;
 112         reversed_end = 224;
 113         transparentcolor = 255;
 114
 115         for (i = 0;i < 256;i++)
 116                 palette_featureflags[i] = PALETTEFEATURE_STANDARD;
 117         for (i = reversed_start;i < reversed_end;i++)
 118                 palette_featureflags[i] = PALETTEFEATURE_REVERSED;
 119         for (i = pants_start;i < pants_end;i++)
 120                 palette_featureflags[i] = PALETTEFEATURE_PANTS;
 121         for (i = shirt_start;i < shirt_end;i++)
 122                 palette_featureflags[i] = PALETTEFEATURE_SHIRT;
 123         for (i = fullbright_start;i < fullbright_end;i++)
 124                 palette_featureflags[i] = PALETTEFEATURE_GLOW;
 125         palette_featureflags[0] = PALETTEFEATURE_ZERO;
 126         palette_featureflags[transparentcolor] = PALETTEFEATURE_TRANSPARENT;
 127
 128         for (i = 0;i < 256;i++)
 129                 palette_bgra_transparent[i] = palette_bgra_complete[i];
 130         palette_bgra_transparent[transparentcolor] = 0;
 131
 132         for (i = 0;i < fullbright_start;i++)
 133                 palette_bgra_nofullbrights[i] = palette_bgra_complete[i];
 134         for (i = fullbright_start;i < fullbright_end;i++)
 135                 palette_bgra_nofullbrights[i] = palette_bgra_complete[0];
 136
 137         for (i = 0;i < 256;i++)
 138                 palette_bgra_onlyfullbrights[i] = 0;
 139         for (i = fullbright_start;i < fullbright_end;i++)
 140                 palette_bgra_onlyfullbrights[i] = palette_bgra_complete[i];
 141
 142         for (i = 0;i < 256;i++)
 143                 palette_bgra_nocolormapnofullbrights[i] = palette_bgra_complete[i];
 144         for (i = pants_start;i < pants_end;i++)
 145                 palette_bgra_nocolormapnofullbrights[i] = 0;
 146         for (i = shirt_start;i < shirt_end;i++)
 147                 palette_bgra_nocolormapnofullbrights[i] = 0;
 148         for (i = fullbright_start;i < fullbright_end;i++)
 149                 palette_bgra_nocolormapnofullbrights[i] = 0;
 150
 151         for (i = 0;i < 256;i++)
 152                 palette_bgra_nocolormap[i] = palette_bgra_complete[i];
 153         for (i = pants_start;i < pants_end;i++)
 154                 palette_bgra_nocolormap[i] = 0;
 155         for (i = shirt_start;i < shirt_end;i++)
 156                 palette_bgra_nocolormap[i] = 0;
 157
 158         for (i = 0;i < 256;i++)
 159                 palette_bgra_pantsaswhite[i] = 0;
 160         for (i = pants_start;i < pants_end;i++)
 161         {
 162                 if (i >= reversed_start && i < reversed_end)
 163                         palette_bgra_pantsaswhite[i] = palette_bgra_complete[15 - (i - pants_start)];
 164                 else
 165                         palette_bgra_pantsaswhite[i] = palette_bgra_complete[i - pants_start];
 166         }
 167
 168         for (i = 0;i < 256;i++)
 169                 palette_bgra_shirtaswhite[i] = 0;
 170         for (i = shirt_start;i < shirt_end;i++)
 171         {
 172                 if (i >= reversed_start && i < reversed_end)
 173                         palette_bgra_shirtaswhite[i] = palette_bgra_complete[15 - (i - shirt_start)];
 174                 else
 175                         palette_bgra_shirtaswhite[i] = palette_bgra_complete[i - shirt_start];
 176         }
 177
 178         for (i = 0;i < 256;i++)
 179                 palette_bgra_alpha[i] = 0xFFFFFFFF;
 180         u.i = 0xFFFFFFFF;
 181         u.b[3] = 0;
 182         palette_bgra_alpha[transparentcolor] = u.i;
 183
 184         for (i = 0;i < 256;i++)
 185                 palette_bgra_font[i] = palette_bgra_complete[i];
 186         palette_bgra_font[0] = 0;
 187 }
 188
 189 static void Palette_LoadQ2Colormap(void)
 190 {
 191         fs_offset_t filesize;
 192         unsigned char * q2colormapfile = FS_LoadFile("pics/colormap.pcx", tempmempool, true, &filesize);
 193         if (q2colormapfile && filesize >= 768)
 194         {
 195                 unsigned char q2palette_rgb[256][3];
 196                 unsigned char *out = (unsigned char *) q2palette_bgra_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
 197                 int i;
 198                 LoadPCX_PaletteOnly(q2colormapfile, filesize, q2palette_rgb[0]);
 199                 for (i = 0;i < 256;i++)
 200                 {
 201                         out[i*4+2] = q2palette_rgb[i][0];
 202                         out[i*4+1] = q2palette_rgb[i][1];
 203                         out[i*4+0] = q2palette_rgb[i][2];
 204                         out[i*4+3] = 255;
 205                 }
 206                 Mem_Free(q2colormapfile);
 207         }
 208 }
 209
 210 void BuildGammaTable8(float prescale, float gamma, float scale, float base, float contrastboost, unsigned char *out, int rampsize)
 211 {
 212         int i, adjusted;
 213         double invgamma;
 214         double t, d;
 215
 216         invgamma = 1.0 / gamma;
 217         prescale /= (double) (rampsize - 1);
 218         for (i = 0;i < rampsize;i++)
 219         {
 220                 t = i * prescale;
 221                 d = ((contrastboost - 1) * t + 1);
 222                 if(d == 0)
 223                         t = 0; // we could just as well assume 1 here, depending on which side of the division by zero we want to be
 224                 else
 225                         t = contrastboost * t / d;
 226                 adjusted = (int) (255.0 * (pow(t, invgamma) * scale + base) + 0.5);
 227                 out[i] = bound(0, adjusted, 255);
 228         }
 229 }
 230
 231 void BuildGammaTable16(float prescale, float gamma, float scale, float base, float contrastboost, unsigned short *out, int rampsize)
 232 {
 233         int i, adjusted;
 234         double invgamma;
 235         double t;
 236
 237         invgamma = 1.0 / gamma;
 238         prescale /= (double) (rampsize - 1);
 239         for (i = 0;i < rampsize;i++)
 240         {
 241                 t = i * prescale;
 242                 t = contrastboost * t / ((contrastboost - 1) * t + 1);
 243                 adjusted = (int) (65535.0 * (pow(t, invgamma) * scale + base) + 0.5);
 244                 out[i] = bound(0, adjusted, 65535);
 245         }
 246 }
 247
 248 static void Palette_Shutdown(void)
 249 {
 250 }
 251
 252 static void Palette_NewMap(void)
 253 {
 254 }
 255
 256 static void Palette_Load(void)
 257 {
 258         int i;
 259         unsigned char *out;
 260         float gamma, scale, base;
 261         fs_offset_t filesize;
 262         unsigned char *palfile;
 263         unsigned char texturegammaramp[256];
 264         union
 265         {
 266                 unsigned char b[4];
 267                 unsigned int i;
 268         }
 269         bgra;
 270
 271         gamma = 1;
 272         scale = 1;
 273         base = 0;
 274 // COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
 275         i = COM_CheckParm("-texgamma");
 276         if (i)
 277                 gamma = atof(com_argv[i + 1]);
 278 // COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
 279         i = COM_CheckParm("-texcontrast");
 280         if (i)
 281                 scale = atof(com_argv[i + 1]);
 282 // COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
 283         i = COM_CheckParm("-texbrightness");
 284         if (i)
 285                 base = atof(com_argv[i + 1]);
 286         gamma = bound(0.01, gamma, 10.0);
 287         scale = bound(0.01, scale, 10.0);
 288         base = bound(0, base, 0.95);
 289
 290         BuildGammaTable8(1.0f, gamma, scale, base, 1, texturegammaramp, 256);
 291
 292         palfile = (unsigned char *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false, &filesize);
 293         if (palfile && filesize >= 768)
 294                 memcpy(palette_rgb, palfile, 768);
 295         else
 296         {
 297                 Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
 298                 memcpy(palette_rgb, host_quakepal, 768);
 299         }
 300         if (palfile)
 301                 Mem_Free(palfile);
 302
 303         out = (unsigned char *) palette_bgra_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
 304         for (i = 0;i < 256;i++)
 305         {
 306                 out[i*4+2] = texturegammaramp[palette_rgb[i][0]];
 307                 out[i*4+1] = texturegammaramp[palette_rgb[i][1]];
 308                 out[i*4+0] = texturegammaramp[palette_rgb[i][2]];
 309                 out[i*4+3] = 255;
 310         }
 311
 312         if(*r_colormap_palette.string)
 313                 palfile = (unsigned char *)FS_LoadFile (r_colormap_palette.string, tempmempool, false, &filesize);
 314         else
 315                 palfile = NULL;
 316
 317         if (palfile && filesize >= 48*2)
 318         {
 319                 memcpy(palette_rgb_shirtcolormap[0], palfile, 48);
 320                 memcpy(palette_rgb_shirtscoreboard[0], palfile + 48, 48);
 321         }
 322         else
 323         {
 324                 for(i = 0;i < 16;i++)
 325                 {
 326                         VectorCopy(palette_rgb[(i << 4) | ((i >= 8 && i <= 13) ? 0x04 : 0x0C)], palette_rgb_shirtcolormap[i]);
 327                         VectorCopy(palette_rgb[(i << 4) | 0x08], palette_rgb_shirtscoreboard[i]);
 328                 }
 329         }
 330
 331         if (palfile && filesize >= 48*4)
 332         {
 333                 memcpy(palette_rgb_pantscolormap[0], palfile + 48*2, 48);
 334                 memcpy(palette_rgb_pantsscoreboard[0], palfile + 48*3, 48);
 335         }
 336         else
 337         {
 338                 memcpy(palette_rgb_pantscolormap, palette_rgb_shirtcolormap, sizeof(palette_rgb_pantscolormap));
 339                 memcpy(palette_rgb_pantsscoreboard, palette_rgb_shirtscoreboard, sizeof(palette_rgb_pantsscoreboard));
 340         }
 341
 342         if(palfile)
 343                 Mem_Free(palfile);
 344
 345         memset(palette_bgra_embeddedpic, 0, sizeof(palette_bgra_embeddedpic));
 346         for (i = '1';i <= '7';i++)
 347         {
 348                 Vector4Set(bgra.b, 255, 255, 255, (i - '0') * 255 / 7);
 349                 palette_bgra_embeddedpic[i] = bgra.i;
 350         }
 351
 352         Palette_SetupSpecialPalettes();
 353
 354         Palette_LoadQ2Colormap();
 355 }
 356
 357 void Palette_Init(void)
 358 {
 359         R_RegisterModule("Palette", Palette_Load, Palette_Shutdown, Palette_NewMap, NULL, NULL);
 360         Cvar_RegisterVariable(&r_colormap_palette);
 361         Palette_Load();
 362 }