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<body><span class="vcard"><a class="email" href="mailto:mattst88@gmail.com" title="Matt Turner <mattst88@gmail.com>"> <span class="fn">Matt Turner</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Regression] Synmark2_v6 Multithread performance case FPS reduced by 36%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91788">bug 91788</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">CC</td>
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<td>currojerez@riseup.net
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Regression] Synmark2_v6 Multithread performance case FPS reduced by 36%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91788#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Regression] Synmark2_v6 Multithread performance case FPS reduced by 36%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91788">bug 91788</a>
from <span class="vcard"><a class="email" href="mailto:mattst88@gmail.com" title="Matt Turner <mattst88@gmail.com>"> <span class="fn">Matt Turner</span></a>
</span></b>
<pre>I'm bisecting it to
commit 3569742ec458c0a881857d9deb782c1e11f195d8
Author: Francisco Jerez <<a href="mailto:currojerez@riseup.net">currojerez@riseup.net</a>>
Date: Fri Nov 22 16:00:33 2013 -0800
i965: Define implementation constants for ARB_shader_image_load_store.
Reviewed-by: Paul Berry <<a href="mailto:stereotype441@gmail.com">stereotype441@gmail.com</a>>
v2: Drop VS support pre-Gen8, drop GS support.
Reviewed-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Specifically, commenting out the assignment of ctx->Const.MaxImageUnits brings
performance back to previous levels.
Running strings on synmark indeed shows "GL_ARB_shader_image_load_store", so
the benchmark may be doing additional work with the extension enabled.</pre>
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