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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - piglit.spec.arb_gpu_shader5.arb_gpu_shader5-emitstreamvertex_nodraw intermittent"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96907">96907</a>
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<th>Summary</th>
<td>piglit.spec.arb_gpu_shader5.arb_gpu_shader5-emitstreamvertex_nodraw intermittent
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
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<th>Reporter</th>
<td>mark.a.janes@intel.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>This test fails intermittently with the following signature:
/tmp/build_root/m64/lib/piglit/bin/arb_gpu_shader5-emitstreamvertex_nodraw
-auto -fbo
piglit: debug: Requested an OpenGL 3.2 Core Context, and received a matching
3.3 context
Probe color at (50,50)
Expected: 0.000000 0.000000 0.000000
Observed: 1.000000 0.000000 0.000000
Bisected to:
commit df31c1850d14729e27513ae733110a668f6b6e95
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
i965/gs: Use new NIR intrinsics.
By performing the vertex counting in NIR, we're able to elide a
ton of useless safety checks around every EmitVertex() call:
total instructions in shared programs: 3952 -> 3720 (-5.87%)
instructions in affected programs: 3491 -> 3259 (-6.65%)
helped: 11
HURT: 0
Improves performance in Gl32GSCloth by 0.671742% +/-
0.142202% (n=621) on Haswell GT3e at 1024x768.
This should also make it easier to implement Broadwell's "Static
Vertex Count" feature someday.
Signed-off-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Reviewed-by: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>></pre>
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