[Bug 775698] vaapisink: wayland: mutter cannot import surface into a texture

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=775698

--- Comment #15 from sreerenj <bsreerenj at gmail.com> ---
(In reply to Víctor Manuel Jáquez Leal from comment #14)
> (In reply to sreerenj from comment #11)
> > Hm, anyone upgrading to latest Ubuntu will hit this issue!
> > 
> > It is breaking all gst-launch pipelines in Ubuntu 17.10 since it using
> > gnome-shell/wayland as default now.
> > 
> > I am raising the severity.
> 
> Ubuntu now uses Wayland/Mutter by default.
> 
> And the "bug" is in Mutter. If you try Weston, it works.
> 
> But rather than bug it is a missing feature in mutter that needs to be
> developed.

Yup, I did some investigation/testing too.

Wondering what we should do with this since it breaking most of the gst-launch
pipelines. Adding BGRx support for vaGetSurfaceBufferWl() in intel-vaapi-driver
and doing an internal conversion in vaapisink is the workaround I can think of
(I don't like it though). Or degrade vaapisink rank and promote glimagesink
usage which is of course what we need in future.

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