[Bug 796033] You can not see the image of the movie

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #3 from Cristian Aravena Romero <***@gmail.com> ---
Created attachment 371945
--> https://bugzilla.gnome.org/attachment.cgi?id=371945&action=edit
$dpkg -l | grep ayland

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #1 from Cristian Aravena Romero <***@gmail.com> ---
Hello,

- Not work wity Wayland
- Work with Xorg

Regards,
--
Cristian Aravena Romero (caravena)

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #2 from Nicolas Dufresne (ndufresne) <***@ndufresne.ca> ---
Please extract and summarize the bug information. This will save time to
volunteer looking at your report. This will also make Triaging possible. We
deal with a lot of bug report, this will help the bug be addressed sooner.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Sebastian Dröge (slomo) <***@coaxion.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
CC| |***@coaxion.net

--- Comment #4 from Sebastian Dröge (slomo) <***@coaxion.net> ---
Thanks for taking the time to report this.
This bug report isn't very useful because it doesn't describe the bug well. If
you have time and can still reproduce the bug, please read
https://bugzilla.gnome.org/page.cgi?id=bug-writing.html and add a more useful
description to this bug. When providing a better description, please reset the
status of this bug report from NEEDINFO to its previous status.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Daniel van Vugt <***@canonical.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@canonical.c
| |om

--- Comment #5 from Daniel van Vugt <***@canonical.com> ---
Maybe wait till we've collected some basic info in the downstream bug:
https://launchpad.net/bugs/1770725

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Cristian Aravena Romero <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com,
| |***@igalia.com
Component|gstreamer (core) |gstreamer-vaapi

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Cristian Aravena Romero <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Version|1.14.0 |1.14.1
Summary|You can not see the image |[i915 SNB] Totem window is
|of the movie |all black in Wayland
| |sessions

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Víctor Manuel Jáquez Leal <***@igalia.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Version|1.14.1 |1.14.0

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #6 from Daniel van Vugt <***@canonical.com> ---
Summary from Launchpad:

Using a Sandy Bridge CPU, which supports H.264 High Profile (according to
vainfo), gstreamer1.0-vaapi accelerated playback works in Xorg sessions, but
not Wayland sessions.

The problem, I guess, is that the EGL path might be using some features not
available on Sandy Bridge (like half precision floats, or other shader/GL
features).

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #7 from Daniel van Vugt <***@canonical.com> ---
I have now verified the bug with my own hardware.

It only occurs on a Sandy Bridge CPU in Wayland sessions (EGL). After moving
the hard drive into an Ivy Bridge machine it then works. So the problem is
specific to Sandy Bridge + EGL.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #8 from Daniel van Vugt <***@canonical.com> ---
I wonder if this is the problem:

gstvaapiwindow_egl.c:

static const gchar *vert_shader_text =
"#ifdef GL_ES \n"
"precision mediump float; \n"
...
static const gchar *frag_shader_text_rgba =
"#ifdef GL_ES \n"
"precision mediump float; \n"

If mediump equates to 16-bit (half precision) floats on Intel, then those
shaders won't work on pre-Ivy Bridge CPUs.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Nicolas Dufresne (ndufresne) <***@ndufresne.ca> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@ndufresne.ca

--- Comment #9 from Nicolas Dufresne (ndufresne) <***@ndufresne.ca> ---
Would be really nice to change that and see if you can get it working somehow.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #10 from Daniel van Vugt <***@canonical.com> ---
Furthermore I can confirm the bug occurs with:
clutterautovideosink
glimagesink

but does not happen with:
ximagesink
xvimagesink

So that suggests the problem is localized to GL.

Sorry I can't afford more time on this bug right now.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Cristian Aravena Romero <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|[i915 SNB] Totem window is |Totem window is all black
|all black in Wayland |in Wayland sessions on
|sessions |Sandy Bridge CPUs

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #11 from Cristian Aravena Romero <***@gmail.com> ---
Hello,

How can I help with this?

Regards,
--
Cristian Aravena Romero (caravena)

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #12 from Cristian Aravena Romero <***@gmail.com> ---
Hello,

The report is marked with 'Status: NEEDINFO'. What information do you need to
add/correct this request?

Best regards,
--
Cristian Aravena Romero (caravena)

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

--- Comment #13 from Cristian Aravena Romero <***@gmail.com> ---
Thanks!
--
Cristian Aravena Romero (caravena)

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Víctor Manuel Jáquez Leal <***@igalia.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

Cristian Aravena Romero <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|Totem window is all black |Totem window is all black
|in Wayland sessions on |in Wayland sessions on
|Sandy Bridge CPUs |Sandy Bridge (and
| |Clarkdale) CPUs

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796033

GStreamer system administrator <***@gstreamer.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |OBSOLETE

--- Comment #14 from GStreamer system administrator <***@gstreamer.net> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
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https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/issues/95.