On Wed, May 07, 2014 at 04:55:18PM +0100, Chris Wilson wrote: > On Mon, May 05, 2014 at 11:05:07PM -0700, Jamey Sharp wrote: > > UXA was reporting page-flip completion as soon as the flip was scheduled > > with the kernel, instead of waiting for the kernel to indicate that the > > flip had actually completed. > > > > Moving the DRI2SwapComplete call to the right place fixes all of our > > Piglit tests for OML_sync_control when run on xf86-video-intel/UXA, > > aside from a bit of difficult-to-reproduce flakiness when using a > > divisor > 1. > > The violation is intentional, as it gives us triple buffering by > default. It can be disabled. As far as I can tell, this patch has no effect on triple-buffering. I verified that by logging new_front->handle in intel_do_pageflip: It rotates through three different BO's on successive flips. Jamey
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