[Bug 755675] gtkglsink: UI freezes when the window has a GtkHeaderBar and runs on top of X11

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=755675

--- Comment #2 from Matthew Waters <ystreet00 at gmail.com> ---
Could you also provide a debug log with GST_DEBUG=gl*:7,gtk*:7,3 and backtrace
a few seconds in of the headerbar case where the UI freezes.

FWIW, Nouveau segfaults in the Headerbar case (multiple contexts issue that's
been around for ever.   It also freezes waiting on the glFence object which is
probably the same issue.

I'm suspecting the AMD case is that there is no synchronisation/missing
bindTexture/etc in gtk between the GLArea and the window system contexts so the
display is getting the texture before its been rendered to.

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