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<body><span class="vcard"><a class="email" href="mailto:siglesias@igalia.com" title="Samuel Iglesias <siglesias@igalia.com>"> <span class="fn">Samuel Iglesias</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - Unreal Engine demo doesn't run"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86469">bug 86469</a>
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<td>siglesias@igalia.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Unreal Engine demo doesn't run"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86469#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Unreal Engine demo doesn't run"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86469">bug 86469</a>
from <span class="vcard"><a class="email" href="mailto:siglesias@igalia.com" title="Samuel Iglesias <siglesias@igalia.com>"> <span class="fn">Samuel Iglesias</span></a>
</span></b>
<pre>Just to mention that I tested it on my SNB laptop with today's master
(800efb0690e962750b9a072bcbab279fdaae24a1). It runs the demo very slowly but
without spilling errors.
I ran git-bisect. This is the commit that fixed it:
commit 9b577d57029bb643f2b48b80648b4f901818e93b
Author: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Date: Mon Mar 16 21:33:31 2015 -0700
glsl: Transform pow(x, 4) into (x*x)*(x*x).
Reviewed-by: Juha-Pekka Heikkila <<a href="mailto:juhapekka.heikkila@gmail.com">juhapekka.heikkila@gmail.com</a>>
Reviewed-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
However we still have this issue in SNB and we could hit it again in other
programs (I have not checked current status of related bugs like <a class="bz_bug_link
bz_status_NEW "
title="NEW - Compilation failure for fragment shader with many branches on Sandy Bridge"
href="show_bug.cgi?id=90631">bug #90631</a> and
<a class="bz_bug_link
bz_status_NEW "
title="NEW - FS compile failed: Register spilling not supported with m14 used"
href="show_bug.cgi?id=91259">bug #91259</a>).
Iago's proposal seems reasonable, What do you think about it?</pre>
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