[xorg-bugzilla-noise] [Bug 991] Composite exposes extra visuals

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https://freedesktop.org/bugzilla/show_bug.cgi?id=991        
   




------- Additional Comments From keithp at keithp.com  2004-08-06 13:21 -------
There are several places in the code which "walk" the list of visuals per-screen
to map visual ids to visuals.  A separate list will invalidate all of that code,
hence my suggestion that we simply "hide" the new visuals from clients in the
connection setup and otherwise leave things alone.

As noted in email, the additions to the visual structure were an attempt to get
'naïve' clients working with an ARGB visual by having AllocColor (et al) return
pixel values with alpha components pre-set.  That turned out to be a lot less
useful than I was expecting because essentially no applications bother to ask
the server to compute pixel values for TrueColor visuals, so clients have to be
fixed in any case.  We should consider simply removing those additional fields
from the Visual structure and leaving the advertisement of the extended visuals
to the Composite extension which can simply use a PictureFormat instead of a
Visual to transmit the intra-pixel layout to clients.        
   
   
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