On Mon, 27 Dec 2010 21:24:00 +0200, Ville Syrjälä <[email protected]> 
wrote:

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

CopyArea followed by GetImage is a nice hack which avoids the terrible
GetImage restriction (area must be on-screen or you get an
error). One can assume that a render-preferring application might use
Composite in the same fashion.

Might it be reasonable to add a subwindows mode flag to SourceValidate?
That would let us avoid work in the common case.

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

Yeah, for the ARGB visual.

-- 
[email protected]

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