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Plan 9 - man page for cmap (plan9 section 9)

CMAP(9.6)										CMAP(9.6)

NAME
       cmap - color map format

DESCRIPTION
       A  color map is a 256x3-byte translation table for color values.  In a monochrome picture,
       pixel values index the color map to yield red, green and blue, like this:

	      uchar cmap[256][3];
	      red = cmap[pixel][0];
	      green = cmap[pixel][1];
	      blue = cmap[pixel][2];

       In a full-color picture, the color map is, in effect, three intensity-compensation tables:
       cmap[red][0]  maps red channels, cmap[green][1] maps green channels and cmap[blue][2] maps
       blue channels.

       A color map file is just a 768-byte file containing the color map,  stored  in  the  order
       implied by the declaration of cmap above.

											CMAP(9.6)


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