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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW/BSW Regression]ogles3conform ES3-CTS.gtf.GL3Tests.shadow.shadow_execution_vert fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89457#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW/BSW Regression]ogles3conform ES3-CTS.gtf.GL3Tests.shadow.shadow_execution_vert fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89457">bug 89457</a>
from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
<pre>Bisect shows: ee5fb8d1ba7f50ed94e1a34fa0f6e15a0588145e is the first bad commit
commit ee5fb8d1ba7f50ed94e1a34fa0f6e15a0588145e
Author: Kristian Høgsberg <<a href="mailto:krh@bitplanet.net">krh@bitplanet.net</a>>
AuthorDate: Mon Oct 20 23:29:41 2014 -0700
Commit: Kristian Høgsberg <<a href="mailto:krh@bitplanet.net">krh@bitplanet.net</a>>
CommitDate: Wed Dec 10 12:29:27 2014 -0800
i965: Generate vs code using scalar backend for BDW+
With everything in place, we can now use the scalar backend compiler for
vertex shaders on BDW+. We make scalar vertex shaders the default on
BDW+ but add a new vec4vs debug option to force the vec4 backend.
No piglit regressions.
Performance impact is minimal, I see a ~1.5 improvement on the T-Rex
GLBenchmark case, but in general it's in the noise. Some of our
internal synthetic, vs bounded benchmarks show great improvement, 20%-40%
in some cases, but real-world cases are mostly unaffected.
Signed-off-by: Kristian Høgsberg <<a href="mailto:krh@bitplanet.net">krh@bitplanet.net</a>>
Reviewed-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>></pre>
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