[PATCH 1/3] RFC: drm: Restrict vblank ioctl to master

[Rainer Hochecker]

Am 25.07.2016 08:38 schrieb "Michel Dänzer" <michel at daenzer.net>:
>
> 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.
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