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/* Framebuffer Graphics Libary for Linux, Copyright 1993 Harm Hanemaayer */
/* palette.c Palette functions (wrapper over vgalib) */
#include <stdlib.h>
#include <vga.h>
#include "vgagl.h"
#include "def.h"
/* 256-color palette functions */
/* There was a horrible bug here in 0.8x -- green and blue were swapped... */
void gl_getpalettecolor(int c, int *r, int *g, int *b)
{
vga_getpalette(c, r, g, b);
}
void gl_setpalettecolor(int c, int r, int g, int b)
{
vga_setpalette(c, r, g, b);
}
void gl_setpalettecolors(int s, int n, void *_dp)
{
uchar *dp = _dp;
int i;
for (i = s; i < s + n; i++) {
unsigned char r, g, b;
r = *(dp++);
g = *(dp++);
b = *(dp++);
vga_setpalette(i, r, g, b);
}
}
void gl_getpalettecolors(int s, int n, void *_dp)
{
uchar *dp = _dp;
int i;
for (i = s; i < s + n; i++) {
int r, g, b;
vga_getpalette(i, &r, &g, &b);
*(dp++) = (unsigned char) r;
*(dp++) = (unsigned char) g;
*(dp++) = (unsigned char) b;
}
}
void gl_getpalette(void *p)
{
gl_getpalettecolors(0, 256, p);
}
void gl_setpalette(void *p)
{
gl_setpalettecolors(0, 256, p);
}
void gl_setrgbpalette()
{
int i;
Palette pal;
for (i = 0; i < 256; i++) {
pal.color[i].blue = (i & 7) * (64 / 8); /* 3 bits */
pal.color[i].green = ((i & 56) >> 3) * (64 / 8); /* 3 bits */
pal.color[i].red = ((i & 192) >> 6) * (64 / 4); /* 2 bits */
}
gl_setpalette(&pal);
}
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