Composite extension and 30bit TrueColor visuals...

[Owen Taylor]

On Sat, 2004-11-13 at 03:08 +0100, Roland Mainz wrote:

> How will the Composite extension deal with 30bit TrueColor visuals
> (=having 10bit per R-, G-, B-gun) ? Doesn't that mean that there are
> only two bits left for the alpha channel ?

Well, you probably don't want a 30-bit window with an alpha channel,
but modulo adding support to all the necessary code paths (*), there
should be no difficulty in having 30 bit subwindows or a 30 bit root
window within the composite framework. No more than than there is
a problem with 565 (no alpha) 16 bit windows.

Regards,
						Owen

(*) Not necessarily easy because the RENDER *code* makes a lot of
    assumptions about being able to pack RGBA into a single word.

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