[PATCH xserver] dri2: Invalidate DRI2 buffers for all windows with the same pixmap on swap.

Jakob Bornecrantz jakob at vmware.com
Fri Mar 25 06:10:42 PDT 2011

On Mar 25, 2011, at 13:47, Ville Syrjälä wrote:
> On Fri, Mar 25, 2011 at 12:35:37PM +0100, ext Michel Dänzer wrote:
>> From: Michel Dänzer <daenzer at vmware.com>
>> Without this, when a compositing manager unredirects a fullscreen window which
>> uses DRI2 and page flipping, the DRI2 buffer information for the compositing
>> manager's output window (typically the Composite Overlay Window or root window)
>> may become stale, resulting in all kinds of hilarity.
> Make sense to me.
> BTW I'm toying around with offscreen flipping, and for that I'm using
> the following patch to also invalidate the window's pixmap (the patch
> is against our internal codebase which has the DRI2 ref counting
> patches from Pauli and Christopher).

Does the flipped buffers magically appear in any rendering api sibling obejcts (such as GL texture obejcts) or does the client application need to do anything?

Cheers Jakob.

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