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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Texture flickering when render with Chrome"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94475">94475</a>
</td>
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<th>Summary</th>
<td>Texture flickering when render with Chrome
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
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<th>Reporter</th>
<td>renegart@gmx.de
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=122198" name="attach_122198" title="video showing flickering">attachment 122198</a> <a href="attachment.cgi?id=122198&action=edit" title="video showing flickering">[details]</a></span>
video showing flickering
We have written a pepper-plugin for chrome using the (internal) API to render
with EGL our video content.
On a Intel-GPU we see flickering and corrupted textures.
This effect is seen with the "current" Intel driver on Debian Stretch but not
on Ubuntu 15.10.
Starting with this information I could identify via 'git bisect' the first
"bad" commit which introduces the issue:
commit b86974ffd435b2339cd873131e0f90aedc9c4a42
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Tue Aug 18 11:36:46 2015 +0100
sna/dri2: Do full exchanges of back/pending around deferred swaps
References: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Xorg segfault during video playback"
href="show_bug.cgi?id=91658">https://bugs.freedesktop.org/show_bug.cgi?id=91658</a>
References: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [sna suse] ddx assertion hits"
href="show_bug.cgi?id=70461">https://bugs.freedesktop.org/show_bug.cgi?id=70461</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Since the environment is a little bit complex to provide a reproducer easily,
I've added some videos showing the issue</pre>
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