]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - palette.c
added rampsize parameter to BuildGammaTable8 and 16
[xonotic/darkplaces.git] / palette.c
index f43efcfc82a9b946bfe0f3bc2a83170c7da0283f..21974d4de9e8c1b1dd905bb7d141df157ae461d7 100644 (file)
--- a/palette.c
+++ b/palette.c
 
 #include "quakedef.h"
 
-unsigned int d_8to24table[256];
-//byte d_15to8table[32768];
-byte host_basepal[768];
-byte qgamma[256];
-static float vid_gamma = 1.0;
+unsigned int palette_complete[256];
+unsigned int palette_font[256];
+unsigned int palette_alpha[256];
+unsigned int palette_nocolormap[256];
+unsigned int palette_nocolormapnofullbrights[256];
+unsigned int palette_nofullbrights[256];
+unsigned int palette_onlyfullbrights[256];
+unsigned int palette_pantsaswhite[256];
+unsigned int palette_shirtaswhite[256];
+unsigned int palette_transparent[256];
 
-void Palette_Setup8to24()
+// 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.
+unsigned char host_quakepal[768] =
 {
-       byte *in, *out;
-       unsigned short i;
+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,
+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,
+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,
+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,
+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,
+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
+};
 
-       in = host_basepal;
-       out = (byte *) d_8to24table; // d_8to24table is accessed as 32bit for speed reasons, but is created as 8bit bytes
-       for (i=0 ; i<255 ; i++)
+void Palette_SetupSpecialPalettes(void)
+{
+       int i;
+       int fullbright_start, fullbright_end;
+       int pants_start, pants_end;
+       int shirt_start, shirt_end;
+       int reversed_start, reversed_end;
+       int transparentcolor;
+       unsigned char *colormap;
+       fs_offset_t filesize;
+
+       colormap = FS_LoadFile("gfx/colormap.lmp", tempmempool, true, &filesize);
+       if (colormap && filesize >= 16385)
+               fullbright_start = 256 - colormap[16384];
+       else
+               fullbright_start = 256;
+       if (colormap)
+               Mem_Free(colormap);
+       fullbright_end = 256;
+       pants_start = 96;
+       pants_end = 112;
+       shirt_start = 16;
+       shirt_end = 32;
+       reversed_start = 128;
+       reversed_end = 224;
+       transparentcolor = 255;
+
+       for (i = 0;i < 256;i++)
+               palette_transparent[i] = palette_complete[i];
+       palette_transparent[transparentcolor] = 0;
+
+       for (i = 0;i < fullbright_start;i++)
+               palette_nofullbrights[i] = palette_complete[i];
+       for (i = fullbright_start;i < fullbright_end;i++)
+               palette_nofullbrights[i] = palette_complete[0];
+
+       for (i = 0;i < 256;i++)
+               palette_onlyfullbrights[i] = palette_complete[0];
+       for (i = fullbright_start;i < fullbright_end;i++)
+               palette_onlyfullbrights[i] = palette_complete[i];
+
+       for (i = 0;i < 256;i++)
+               palette_nocolormapnofullbrights[i] = palette_complete[i];
+       for (i = pants_start;i < pants_end;i++)
+               palette_nocolormapnofullbrights[i] = palette_complete[0];
+       for (i = shirt_start;i < shirt_end;i++)
+               palette_nocolormapnofullbrights[i] = palette_complete[0];
+       for (i = fullbright_start;i < fullbright_end;i++)
+               palette_nocolormapnofullbrights[i] = palette_complete[0];
+
+       for (i = 0;i < 256;i++)
+               palette_nocolormap[i] = palette_complete[i];
+       for (i = pants_start;i < pants_end;i++)
+               palette_nocolormap[i] = palette_complete[0];
+       for (i = shirt_start;i < shirt_end;i++)
+               palette_nocolormap[i] = palette_complete[0];
+
+       for (i = 0;i < 256;i++)
+               palette_pantsaswhite[i] = palette_complete[0];
+       for (i = pants_start;i < pants_end;i++)
        {
-               *out++ = *in++;
-               *out++ = *in++;
-               *out++ = *in++;
-               *out++ = 255;
+               if (i >= reversed_start && i < reversed_end)
+                       palette_pantsaswhite[i] = palette_complete[15 - (i - pants_start)];
+               else
+                       palette_pantsaswhite[i] = palette_complete[i - pants_start];
        }
-       d_8to24table[255] = 0; // completely transparent black
+
+       for (i = 0;i < 256;i++)
+               palette_shirtaswhite[i] = palette_complete[0];
+       for (i = shirt_start;i < shirt_end;i++)
+       {
+               if (i >= reversed_start && i < reversed_end)
+                       palette_shirtaswhite[i] = palette_complete[15 - (i - shirt_start)];
+               else
+                       palette_shirtaswhite[i] = palette_complete[i - shirt_start];
+       }
+
+       for (i = 0;i < 256;i++)
+               palette_alpha[i] = 0xFFFFFFFF;
+       palette_alpha[transparentcolor] = 0;
+
+       for (i = 0;i < 256;i++)
+               palette_font[i] = palette_complete[i];
+       palette_font[0] = 0;
 }
 
-/*
-void   Palette_Setup15to8()
+void BuildGammaTable8(float prescale, float gamma, float scale, float base, unsigned char *out, int rampsize)
 {
-       byte    *pal;
-       unsigned r,g,b;
-       unsigned v;
-       int     r1,g1,b1;
-       int             j,k,l;
-       unsigned short i;
-
-       for (i = 0;i < 32768;i++)
+       int i, adjusted;
+       double invgamma;
+
+       invgamma = 1.0 / gamma;
+       prescale /= (double) (rampsize - 1);
+       for (i = 0;i < rampsize;i++)
        {
-               r = ((i & 0x001F) << 3)+4;
-               g = ((i & 0x03E0) >> 2)+4;
-               b = ((i & 0x7C00) >> 7)+4;
-               pal = (unsigned char *)d_8to24table;
-               for (v = 0, k = 0, l = 1000000000;v < 256;v++, pal += 4)
-               {
-                       r1 = r - pal[0];
-                       g1 = g - pal[1];
-                       b1 = b - pal[2];
-                       j = r1*r1+g1*g1+b1*b1;
-                       if (j < l)
-                       {
-                               k = v;
-                               l = j;
-                       }
-               }
-               d_15to8table[i] = k;
+               adjusted = (int) (255.0 * (pow((double) i * prescale, invgamma) * scale + base) + 0.5);
+               out[i] = bound(0, adjusted, 255);
        }
 }
-*/
 
-void Palette_Gamma ()
+void BuildGammaTable16(float prescale, float gamma, float scale, float base, unsigned short *out, int rampsize)
 {
-       float   inf;
-       int             i;
-
-       vid_gamma = 1;
-       if ((i = COM_CheckParm("-gamma")))
-               vid_gamma = atof(com_argv[i+1]);
+       int i, adjusted;
+       double invgamma;
 
-       if (vid_gamma == 1) // LordHavoc: dodge the math
+       invgamma = 1.0 / gamma;
+       prescale /= (double) (rampsize - 1);
+       for (i = 0;i < rampsize;i++)
        {
-               for (i = 0;i < 256;i++)
-                       qgamma[i] = i;
+               adjusted = (int) (65535.0 * (pow((double) i * prescale, invgamma) * scale + base) + 0.5);
+               out[i] = bound(0, adjusted, 65535);
        }
+}
+
+void Palette_Init(void)
+{
+       int i;
+       float gamma, scale, base;
+       fs_offset_t filesize;
+       unsigned char *in, *out, *palfile;
+       unsigned char texturegammaramp[256];
+
+       gamma = 1;
+       scale = 1;
+       base = 0;
+// COMMANDLINEOPTION: Client: -texgamma <number> sets the quake palette gamma, allowing you to make quake textures brighter/darker, not recommended
+       i = COM_CheckParm("-texgamma");
+       if (i)
+               gamma = atof(com_argv[i + 1]);
+// COMMANDLINEOPTION: Client: -texcontrast <number> sets the quake palette contrast, allowing you to make quake textures brighter/darker, not recommended
+       i = COM_CheckParm("-texcontrast");
+       if (i)
+               scale = atof(com_argv[i + 1]);
+// COMMANDLINEOPTION: Client: -texbrightness <number> sets the quake palette brightness (brightness of black), allowing you to make quake textures brighter/darker, not recommended
+       i = COM_CheckParm("-texbrightness");
+       if (i)
+               base = atof(com_argv[i + 1]);
+       gamma = bound(0.01, gamma, 10.0);
+       scale = bound(0.01, scale, 10.0);
+       base = bound(0, base, 0.95);
+
+       BuildGammaTable8(1.0f, gamma, scale, base, texturegammaramp, 256);
+
+       palfile = (unsigned char *)FS_LoadFile ("gfx/palette.lmp", tempmempool, false, &filesize);
+       if (palfile && filesize >= 768)
+               in = palfile;
        else
        {
-               for (i = 0;i < 256;i++)
-               {
-                       inf = pow((i+1)/256.0, vid_gamma)*255 + 0.5;
-                       if (inf < 0) inf = 0;
-                       if (inf > 255) inf = 255;
-                       qgamma[i] = inf;
-               }
+               Con_DPrint("Couldn't load gfx/palette.lmp, falling back on internal palette\n");
+               in = host_quakepal;
        }
-}
+       out = (unsigned char *) palette_complete; // palette is accessed as 32bit for speed reasons, but is created as 8bit bytes
+       for (i = 0;i < 256;i++)
+       {
+               *out++ = texturegammaramp[*in++];
+               *out++ = texturegammaramp[*in++];
+               *out++ = texturegammaramp[*in++];
+               *out++ = 255;
+       }
+       if (palfile)
+               Mem_Free(palfile);
 
-void Palette_Init()
-{
-       byte *pal;
-       pal = (byte *)COM_LoadMallocFile ("gfx/palette.lmp", false);
-       if (!pal)
-               Sys_Error ("Couldn't load gfx/palette.lmp");
-       memcpy(host_basepal, pal, 765);
-       qfree(pal);
-       host_basepal[765] = host_basepal[766] = host_basepal[767] = 0; // LordHavoc: force the transparent color to black
-       Palette_Setup8to24();
-//     Palette_Setup15to8();
-       Palette_Gamma();
+       Palette_SetupSpecialPalettes();
 }
+