[cairo] 8 bit pseudo color missing.

[Keith Packard]

On Wed, 2006-03-22 at 15:55 -0500, Owen Taylor wrote:

>    Floyd-Steinberg dithering, though it really doesn't work
>    well for screen display due to discontinuities at the
>    edges of dithered regions has the nice property that 
>    it is easy to get going with an arbitrary color map
>    rather than a color cube. As long as you have *some* way
>    of finding an color in the color map that approximates
>    the color of the pixel, then you'll get decent results.

I think an ordered dither makes a whole lot more sense here; it's both
faster and generates stable results.

But, otherwise, I think this approach will produce better results than
the way the X server does things. Storing data in TrueColor format isn't
an option for Render inside the server, but it certainly is for us.

-- 
keith.packard at intel.com
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