On Mon, Jul 25, 2016 at 1:15 PM, Rainer Hochecker <fernetmenta@xxxxxxx> wrote: > Am 25.07.2016 08:38 schrieb "Michel Dänzer" <michel@xxxxxxxxxxx>: >> >> On 13.07.2016 18:49, Rainer Hochecker wrote: >> > We have been using this for years now and did not observe issues you >> > mentioned. I would be surprised if a child window refreshes in a >> > different rate than the main window >> >> The Xorg driver decides which CRTC to synchronize with based on the >> window geometry. For a window with no visible geometry, it may choose a >> different CRTC than for the visible output window. In the case of DRI3, >> the Xorg Present extension code may even fall back to the fake CRTC in >> that case, which only generates a fake vblank event once every second. >> >> >> -- >> Earthling Michel Dänzer | http://www.amd.com >> Libre software enthusiast | Mesa and X developer >> > > That means that we won't have a solution for X11 with EGL for Intel systems > anymore. I didn't know about this, but a proper EGL extension, implemented on X11 exists already: https://codereview.chromium.org/2867513002/ It's not in the khronos registry, but mesa implements it, and semantics match oml_sync (and wayland present), so we already have the proper extension to implement this without digging around in device files and making a guess about which pipe you might be running on. Cheers, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
