DMAbuf flickering from three different sources

[Matteo Valdina]

Thanks,
I'll continue to give a look.

Best
Matteo Valdina

On Thu, Oct 4, 2018, 06:29 Pekka Paalanen <ppaalanen at gmail.com> wrote:

> On Thu, 4 Oct 2018 05:59:14 -0500
> Matteo Valdina <matteo.valdina at gmail.com> wrote:
>
> > Hi Pekka,
> > No the problem is also present on weston 4.0 and 5.0.
> >
> > One interesting note, all sources use the same resolution (4K and
> GStreamer
> > is using format NV12).
> > The two gstreamer sources are in full screen in two different display.
>
> Sorry, I have no idea. I did get a thought about a patch in master, but
> then saw it was from you. :-)
>
> Maybe it could be some state mixup around the YUV texturing in
> GL-renderer, I would assume that to be rarely tested, especially with
> multiple simultaneous clients hitting it.
>
>
> Thanks,
> pq
>
> > On Thu, Oct 4, 2018, 05:44 Pekka Paalanen <ppaalanen at gmail.com> wrote:
> >
> > > On Wed, 3 Oct 2018 11:19:28 -0500
> > > Matteo Valdina <matteo.valdina at gmail.com> wrote:
> > >
> > > > Hi Y'all,
> > > >
> > > > I'm working in a Weston-based compositor (4.0 and later on the 5.0)
> and I
> > > > faced an issue.
> > > >
> > > > I have two different sources (1 QT application and 2 GStreamer
> > > waylandsink)
> > > > that provide content a live stream using the
> linux-dmabuf-unstable-v1.
> > > > The issue is that the frames of this three sources are displayed in
> > > > randomly on all these sources.
> > > >
> > > > I mean that source 1 display some frame for source 1 and some frame
> from
> > > > source 2 or 3. And this is affecting multiple processes (the QT
> > > application
> > > > is a different process).
> > > >
> > > > It looks like the same DMAbuf pool is shared across all applications.
> > > >
> > > > This is a Kernel 4.12, Weston 5.0, Qt5, GStreamer 1.14 Mesa 18.1.7
> and on
> > > > an Intel HD graphics 610.
> > > >
> > > > Any suggestions to tackle this?
>
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