On Mit, 2011-10-26 at 21:36 +0200, Michal Suchanek wrote: > > Ideally I would like no tearing and no vblank sync
Well, the only way to avoid tearing without sync to vblank is the method controlled by Option "SwapbuffersWait"... > but both tearing prevention in the radeon driver and sync to vblank > can lead to applications getting stuck in the X server. Please provide details about a specific scenario where this happens with vblank_mode=0. > However, the tearing prevention does in practice vblank sync, at least > for fullscreen windows. For fullscreen windows, scanout is only outside of the window during vertical blank. > So the practical difference is minimal since most GL rendering would > occur in large windows. The main difference is that sync to vblank waits for CPU interrupts, whereas the vline waits happen in the GPU command processor. > In the more recent snapshot the tearing prevention is not working > which is probably a bug in itself. Define 'not working'. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
