[PATCH xserver 4/4] glx: Move Composite's synthetic visuals to a different select group

[Eric Anholt]

Adam Jackson <ajax at redhat.com> writes:

> Should you find yourself using a 16bpp display while also using a
> compositor, you poor soul, you may find that your GLX applications
> behave strangely; in particular, glxgears will be transparent. This is
> because it clears to (0,0,0,0) which is transparent if you honor alpha,
> and it will choose the synthetic visual because it has the most
> available r/g/b bits.
>
> To avoid this, bump synthetic visuals to a higher (less-preferred)
> select group. Unless the client explicitly asks for non-zero alpha bits,
> this will prefer any rgb565 visual ahead of the argb8888 visual.
>
> Signed-off-by: Adam Jackson <ajax at redhat.com>

Nice fix.  The series is:

Reviewed-by: Eric Anholt <eric at anholt.net>
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