[Bug 86469] Unreal Engine demo doesn't run

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86469

Samuel Iglesias <siglesias at igalia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |siglesias at igalia.com

--- Comment #13 from Samuel Iglesias <siglesias at igalia.com> ---
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 <mattst88 at gmail.com>
Date:   Mon Mar 16 21:33:31 2015 -0700

    glsl: Transform pow(x, 4) into (x*x)*(x*x).

    Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

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 bug #90631 and
bug #91259).

Iago's proposal seems reasonable, What do you think about it?

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