[cairo] is self-copy supposed to work?

[Koen Kooi]

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On 04-05-10 04:08, Matt Woodrow wrote:
> Having self copy work correctly (and preferably without needing a
> temporary surface in the simple cases) is going
> to be important for implementing scrolling in Rob's Layers work for
> Firefox.

Would overlapped blt help with this? Siarhei has some patches for that
at http://cgit.freedesktop.org/~siamashka/pixman/log/?h=overlapped_blt

regards,

Koen
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