[PATCH] EXA: Use correct coordinate system for calculating Composite fallback region.

[Keith Packard]

On Thu, 03 Dec 2009 16:59:09 +0100, Michel Dänzer <michel at daenzer.net> wrote:

> Ugh, sounds like it'll be tricky to get this 100% correct for source
> pictures with ->pDrawable->x/y != 0...

You can't use the source clip region to compute an operation region when
the source has a transform, that's for sure. Aside from that, adjusting
the transform to incorporate the drawable offset is fairly trivial (I've
posted a patch for fb which does this).

> Fortunately though, that's a relatively academic issue compared to the
> real problem occurring with window destination pictures. As a first
> step, would you accept a patch with only the destination coordinate
> adjustments?

Can you take a look at my fb patch and see if you can adopt a similar
technique for exa? It isn't very complicated.

-- 
keith.packard at intel.com
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