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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Ring hang with geometry shaders on SNB"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84104#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Ring hang with geometry shaders on SNB"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84104">bug 84104</a>
from <span class="vcard"><a class="email" href="mailto:itoral@igalia.com" title="Iago Toral <itoral@igalia.com>"> <span class="fn">Iago Toral</span></a>
</span></b>
<pre>One last piece of info: setting GEN6_GS_DISCARD_ADJACENCY in the _3DSTATE_GS
command does not remove the hang either. I guess this means that the hang
occurs before the GS payload is delivered and definitely before any GS program
can be executed. I guess this makes sense, since otherwise it would be
difficult to explain why this hangs only with glDrawElements.
Based on all the analysis so far, I suspect that the hang is happening at the
VS stage when accessing vertex data for GL_TRIANGLE_STRIP_ADJACENCY primitives
when repeating indices are provided via glDrawElements.</pre>
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