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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [ILK] Triangle tearing and sampler corruption (kwin full-scene repaint)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88889">bug 88889</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Summary</td>
<td>[ILK] Triangle tearing
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<td>[ILK] Triangle tearing and sampler corruption (kwin full-scene repaint)
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ILK] Triangle tearing and sampler corruption (kwin full-scene repaint)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88889#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [ILK] Triangle tearing and sampler corruption (kwin full-scene repaint)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88889">bug 88889</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>What it looks like is the compositor is sampling the updated pixmaps in the
middle of a cache flush. The triangle artifacts is symptomatic of how OpenGL
renders, but the actual corruption looks to be at the individual EU/thread
level i.e. sampling. Given that there is supposed to be a full cache flush
between X rendering and the compositor (and vice versa), that is surprising!
Can you please try Option "AccelMethod" "blt"? Could you also find a really old
version of mesa, say even 9.0 or 10.0? Could you try a few different kernels?</pre>
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