[PATCH 2/2] present: Fix use of vsynced pageflips and honor PresentOptionAsync. (v4)

[Keith Packard]

Mario Kleiner <mario.kleiner.de at gmail.com> writes:

> Pageflips for Pixmap presents were not synchronized to vblank on
> drivers with support for PresentCapabilityAsync, due to some
> missing init for vblank->sync_flips. The PresentOptionAsync
> flag was completely ignored for pageflipped presents.
>
> Vsynced flips only worked by accident on the intel-ddx, as that
> driver doesn't have PresentCapabilityAsync support.
>
> On nouveau-ddx, which supports PresentCapabilityAsync, this
> always caused non-vsynced pageflips with pretty ugly tearing.
>
> This patch fixes the problem, as tested on top of XOrg 1.16.2
> on nouveau and intel.
>
> v4: Add additional PresentCapabilityAsync caps check, as
> suggested by Eric Anholt.
>
> Please also apply to XOrg 1.17 and XOrg 1.16.2 stable.
>
> Applying on top of XOrg 1.16.2 requires cherry-picking
> commit 2051514652481a83bd7cf22e57cb0fcd40333f33
> which trivially fixes lack of support for protocol option
> PresentOptionCopy - get two bug fixes for the price of one!
>
> Signed-off-by: Mario Kleiner <mario.kleiner.de at gmail.com>
> Reviewed-by: Eric Anholt <eric at anholt.net>

Both Merged.
   32ca85c..aae6460  master -> master

-- 
keith.packard at intel.com
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