[RFC][PATCH] dix/composite: Update windows with automatically redirected children on demand

[Ville Syrjälä]

On Mon, Dec 27, 2010 at 11:11:58AM -0800, ext Keith Packard wrote:
> On Mon, 27 Dec 2010 20:45:39 +0200, Ville Syrjälä <ville.syrjala at nokia.com> wrote:
> 
> > Could be overwritten fully, partially, or not at all, depending on
> > the operation and GC clipping, I suppose? If any part of it gets
> > overwritten it still seems better to copy from the child first,
> > otherwise the last rendering results can get overwritten by the
> > composite block handler.
> 
> As I said, they'll get overwritten eventually, so it's only a matter of
> 'when', not 'if'. Given that we're not going to make this 'correct',
> we should probably just figure out what we actually want.

Right. GetImage at least seems useful for testing purposes.
Not sure if other use cases are even worth considering.

I wonder if anyone actually uses automatic redirection? Well, I
suppose implicit redirection can be useful when a composite
manager is not used.

-- 
Ville Syrjälä