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From: Club Neon <clubneon@hereintown.net>
To : ggi-develop@eskimo.com
Date: Sun, 4 Jul 1999 03:29:49 -0400
Re: Got to be a faster way.
> How about with this:
>
> /* generate_332_palette:
> * Used when loading a truecolor image into an 8 bit bitmap, to generate
> * a 3.3.2 RGB palette.
> */
> void generate_332_palette(ggi_color *pal)
> {
> #define PAL_SIZE 256
> ggi_sint c;
>
> for (c=0; c < PAL_SIZE; c++) {
> pal[c].r = ((c>>5)&7) * 0xffff/7;
> pal[c].g = ((c>>2)&7) * 0xffff/7;
> pal[c].b = (c&3) * 0xffff/3;
> }
>
> pal[0].r = 0xffff;
> pal[0].g = 0;
> pal[0].b = 0xffff;
>
> pal[254].r = pal[254].g = pal[254].b = 0;
> #undef PAL_SIZE
> } // generate_332_palette
>
>
> Any comments?
How about a question? Why is pal[0] magenta, and pal[254] black? Am I
missing something?
I was thinking that pal[0] would be black, and I guess pal[254] would be
almost white, slightly yellow tinted.
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