Ville Syrj?l? <ville.syrjala at linux.intel.com> writes: > On Tue, Oct 30, 2012 at 01:33:47PM -0500, Jesse Barnes wrote: >> The hw supports async flips through the render ring, so why not expose it? >> It gives us one more "tear me harder" option we can use in the DDX and >> for other cases where simply flipping to the latest buffer is more >> important than visual quality. > > The only reason I can see why anyone would really want async flips is > when you're restricted to double buffering. With triple buffering you > should be able to override the previous flip w/o tearing. > > Well, actually if you use the ring based flips, then you can't do the > override. My atomic page flip code can do it because it's using mmio > flips. There were also other reasons favoring mmio over ring. > > Once the atomic code is deemed ready, I would suggest we just nuke the > ring based flip code (pun intended). Can you outline what exactly your plan is for doing faster-than-vblank page flipping without tearing, and how it gets synchronized with rendering? -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 197 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20121031/80b5e7f7/attachment.pgp>
