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https://github.com/DrBeef/Raze.git
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270 lines
9 KiB
C
270 lines
9 KiB
C
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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//
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// This file has been modified from Ken Silverman's original release
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// by Jonathon Fowler (jf@jonof.id.au)
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#include "compat.h"
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#include "pragmas.h"
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#define MAXPALOOKUPS 256
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static int numpalookups, transratio;
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static char palettefilename[13], origpalookup[MAXPALOOKUPS<<8];
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static char palette[768], palookup[MAXPALOOKUPS<<8], transluc[65536];
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static char closestcol[64][64][64];
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#define FASTPALGRIDSIZ 8
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static int rdist[129], gdist[129], bdist[129];
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static char colhere[((FASTPALGRIDSIZ+2)*(FASTPALGRIDSIZ+2)*(FASTPALGRIDSIZ+2))>>3];
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static char colhead[(FASTPALGRIDSIZ+2)*(FASTPALGRIDSIZ+2)*(FASTPALGRIDSIZ+2)];
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static int colnext[256];
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static char coldist[8] = {0,1,2,3,4,3,2,1};
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static int colscan[27];
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char getclosestcol(int r, int g, int b)
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{
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int i, j, k, dist, mindist, retcol;
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int *rlookup, *glookup, *blookup;
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char *ptr;
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if (closestcol[r][g][b] != 255) return(closestcol[r][g][b]);
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j = (r>>3)*FASTPALGRIDSIZ*FASTPALGRIDSIZ+(g>>3)*FASTPALGRIDSIZ+(b>>3)+FASTPALGRIDSIZ*FASTPALGRIDSIZ+FASTPALGRIDSIZ+1;
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mindist = min(rdist[coldist[r&7]+64+8],gdist[coldist[g&7]+64+8]);
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mindist = min(mindist,bdist[coldist[b&7]+64+8]);
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mindist++;
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rlookup = (int *)&rdist[64-r];
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glookup = (int *)&gdist[64-g];
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blookup = (int *)&bdist[64-b];
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retcol = -1;
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for(k=26;k>=0;k--)
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{
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i = colscan[k]+j; if ((colhere[i>>3]&(1<<(i&7))) == 0) continue;
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for(i=colhead[i];i>=0;i=colnext[i])
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{
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ptr = (char *)&palette[i*3];
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dist = glookup[ptr[1]]; if (dist >= mindist) continue;
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dist += rlookup[ptr[0]]; if (dist >= mindist) continue;
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dist += blookup[ptr[2]]; if (dist >= mindist) continue;
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mindist = dist; retcol = i;
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}
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}
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if (retcol < 0)
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{
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mindist = 0x7fffffff;
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ptr = (char *)&palette[768-3];
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for(i=255;i>=0;i--,ptr-=3)
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{
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dist = glookup[ptr[1]]; if (dist >= mindist) continue;
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dist += rlookup[ptr[0]]; if (dist >= mindist) continue;
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dist += blookup[ptr[2]]; if (dist >= mindist) continue;
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mindist = dist; retcol = i;
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}
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}
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ptr = (char *)&closestcol[r][g][b];
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*ptr = retcol;
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if ((r >= 4) && (ptr[(-2)<<12] == retcol)) ptr[(-3)<<12] = retcol, ptr[(-2)<<12] = retcol, ptr[(-1)<<12] = retcol;
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if ((g >= 4) && (ptr[(-2)<<6] == retcol)) ptr[(-3)<<6] = retcol, ptr[(-2)<<6] = retcol, ptr[(-1)<<6] = retcol;
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if ((b >= 4) && (ptr[(-2)] == retcol)) ptr[(-3)] = retcol, ptr[(-2)] = retcol, ptr[(-1)] = retcol;
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if ((r < 64-4) && (ptr[(2)<<12] == retcol)) ptr[(3)<<12] = retcol, ptr[(2)<<12] = retcol, ptr[(1)<<12] = retcol;
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if ((g < 64-4) && (ptr[(2)<<6] == retcol)) ptr[(3)<<6] = retcol, ptr[(2)<<6] = retcol, ptr[(1)<<6] = retcol;
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if ((b < 64-4) && (ptr[(2)] == retcol)) ptr[(3)] = retcol, ptr[(2)] = retcol, ptr[(1)] = retcol;
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if ((r >= 2) && (ptr[(-1)<<12] == retcol)) ptr[(-1)<<12] = retcol;
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if ((g >= 2) && (ptr[(-1)<<6] == retcol)) ptr[(-1)<<6] = retcol;
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if ((b >= 2) && (ptr[(-1)] == retcol)) ptr[(-1)] = retcol;
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if ((r < 64-2) && (ptr[(1)<<12] == retcol)) ptr[(1)<<12] = retcol;
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if ((g < 64-2) && (ptr[(1)<<6] == retcol)) ptr[(1)<<6] = retcol;
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if ((b < 64-2) && (ptr[(1)] == retcol)) ptr[(1)] = retcol;
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return(retcol);
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}
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char getpalookup(char dashade, char dacol)
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{
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int r, g, b, t;
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char *ptr;
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ptr = (char *)&palette[dacol*3];
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t = divscale16(numpalookups-dashade,numpalookups);
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r = ((ptr[0]*t+32768)>>16);
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g = ((ptr[1]*t+32768)>>16);
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b = ((ptr[2]*t+32768)>>16);
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return(getclosestcol(r,g,b));
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}
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char gettrans(char dat1, char dat2, int datransratio)
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{
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int r, g, b;
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char *ptr, *ptr2;
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ptr = (char *)&palette[dat1*3];
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ptr2 = (char *)&palette[dat2*3];
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r = ptr[0]; r += (((ptr2[0]-r)*datransratio+128)>>8);
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g = ptr[1]; g += (((ptr2[1]-g)*datransratio+128)>>8);
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b = ptr[2]; b += (((ptr2[2]-b)*datransratio+128)>>8);
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return(getclosestcol(r,g,b));
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}
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void initfastcolorlookup(int rscale, int gscale, int bscale)
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{
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int i, j, x, y, z;
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char *ptr;
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j = 0;
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for(i=64;i>=0;i--)
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{
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//j = (i-64)*(i-64);
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rdist[i] = rdist[128-i] = j*rscale;
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gdist[i] = gdist[128-i] = j*gscale;
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bdist[i] = bdist[128-i] = j*bscale;
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j += 129-(i<<1);
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}
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Bmemset(colhere, 0, sizeof(colhere));
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Bmemset(colhead, 0, sizeof(colhead));
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ptr = (char *)&palette[768-3];
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for(i=255;i>=0;i--,ptr-=3)
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{
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j = (ptr[0]>>3)*FASTPALGRIDSIZ*FASTPALGRIDSIZ+(ptr[1]>>3)*FASTPALGRIDSIZ+(ptr[2]>>3)+FASTPALGRIDSIZ*FASTPALGRIDSIZ+FASTPALGRIDSIZ+1;
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if (colhere[j>>3]&(1<<(j&7))) colnext[i] = colhead[j]; else colnext[i] = -1;
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colhead[j] = i;
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colhere[j>>3] |= (1<<(j&7));
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}
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i = 0;
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for(x=-FASTPALGRIDSIZ*FASTPALGRIDSIZ;x<=FASTPALGRIDSIZ*FASTPALGRIDSIZ;x+=FASTPALGRIDSIZ*FASTPALGRIDSIZ)
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for(y=-FASTPALGRIDSIZ;y<=FASTPALGRIDSIZ;y+=FASTPALGRIDSIZ)
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for(z=-1;z<=1;z++)
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colscan[i++] = x+y+z;
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i = colscan[13]; colscan[13] = colscan[26]; colscan[26] = i;
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}
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int main(int argc, char **argv)
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{
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char col, ch;
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short orignumpalookups;
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int fil, i, j, rscale, gscale, bscale;
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char buf[65536];
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ch = 13;
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if (argc>1) {
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if (argv[1][0] == '-') {
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if (argv[1][1] == 't') { ch = 32; puts("Updating translucency table ONLY"); }
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argc--;
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argv++;
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}
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}
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if ((argc != 3) && (argc != 6))
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{
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Bprintf("TRANSPAL [-t]<numshades><trans#(0-inv,256-opa)><r><g><b> by Kenneth Silverman\n");
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Bprintf(" Ex #1: transpal 32 170 30 59 11 (I use these values in my BUILD demo)\n");
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Bprintf(" \xc0\xc4\xc4\xc1\xc4\xc4\xc1\xc4\xc4\xc4 The RGB scales are optional\n");
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Bprintf(" Ex #2: transpal 64 160\n\n");
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Bprintf("Once tables are generated, the optional -t switch determines what to save:\n");
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Bprintf(" Exclude -t to update both the shade table and transluscent table\n");
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Bprintf(" Include -t to update the transluscent table ONLY\n");
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exit(0);
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}
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Bstrcpy(palettefilename,"palette.dat");
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numpalookups = Batol(argv[1]);
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transratio = Batol(argv[2]);
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if (argc == 6)
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{
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rscale = Batol(argv[3]);
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gscale = Batol(argv[4]);
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bscale = Batol(argv[5]);
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}
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else
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{
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rscale = 30;
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gscale = 59;
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bscale = 11;
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}
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if ((numpalookups < 1) || (numpalookups > 256))
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{ Bprintf("Invalid number of shades\n"); exit(0); }
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if ((transratio < 0) || (transratio > 256))
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{ Bprintf("Invalid transluscent ratio\n"); exit(0); }
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if ((fil = Bopen(palettefilename,BO_BINARY|BO_RDONLY,BS_IREAD)) == -1)
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{
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Bprintf("%s not found",palettefilename);
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return(0);
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}
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Bread(fil,palette,768);
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Bread(fil,&orignumpalookups,2); orignumpalookups = B_LITTLE16(orignumpalookups);
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orignumpalookups = min(max(orignumpalookups,1),256);
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Bread(fil,origpalookup,(int)orignumpalookups<<8);
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Bclose(fil);
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clearbuf(buf,65536>>2,0L);
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initfastcolorlookup(rscale,gscale,bscale);
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clearbuf(closestcol,262144>>2,0xffffffff);
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for(i=0;i<numpalookups;i++)
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for(j=0;j<256;j++)
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{
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col = getpalookup((char)i,(char)j);
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palookup[(i<<8)+j] = col;
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drawpixel(((((i<<1)+0)*320+(j+8))>>2)+buf,(int)col);
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drawpixel(((((i<<1)+1)*320+(j+8))>>2)+buf,(int)col);
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}
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for(i=0;i<256;i++)
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for(j=0;j<6;j++)
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{
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drawpixel((((j+132+0)*320+(i+8))>>2)+buf,i);
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drawpixel((((i+132+8)*320+(j+0))>>2)+buf,i);
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}
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for(i=0;i<256;i++)
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for(j=0;j<256;j++)
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{
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col = gettrans((char)i,(char)j,transratio);
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transluc[(i<<8)+j] = col;
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drawpixel((((j+132+8)*320+(i+8))>>2)+buf,(int)col);
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}
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if (ch == 13)
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{
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short s;
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if ((fil = Bopen(palettefilename,BO_BINARY|BO_TRUNC|BO_CREAT|BO_WRONLY,BS_IREAD|BS_IWRITE)) == -1)
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{ Bprintf("Couldn't save file %s",palettefilename); return(0); }
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Bwrite(fil,palette,768);
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s = B_LITTLE16(numpalookups); Bwrite(fil,&s,2);
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Bwrite(fil,palookup,numpalookups<<8);
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Bwrite(fil,transluc,65536);
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Bclose(fil);
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Bprintf("Shade table AND transluscent table updated\n");
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}
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else if (ch == 32)
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{
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short s;
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if ((fil = Bopen(palettefilename,BO_BINARY|BO_TRUNC|BO_CREAT|BO_WRONLY,BS_IREAD|BS_IWRITE)) == -1)
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{ Bprintf("Couldn't save file %s",palettefilename); return(0); }
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Bwrite(fil,palette,768);
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s = B_LITTLE16(orignumpalookups); Bwrite(fil,&s,2);
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Bwrite(fil,origpalookup,(int)orignumpalookups<<8);
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Bwrite(fil,transluc,65536);
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Bclose(fil);
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Bprintf("Transluscent table updated\n");
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}
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else
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Bprintf("Palette file wasn't touched\n");
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return 0;
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}
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