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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i965 bisected] commit 6ee4b352c90e93c82d900328716c1068a7188b91 regress ASTROKILL and EVERSPACE on Haswell"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103632">103632</a>
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<th>Summary</th>
<td>[i965 bisected] commit 6ee4b352c90e93c82d900328716c1068a7188b91 regress ASTROKILL and EVERSPACE on Haswell
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<th>Product</th>
<td>Mesa
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<th>Version</th>
<td>17.3
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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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>intel-3d-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>d.spitznagel@goodbytez.de
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Hello Intel Mesa team,
ASTROKILL and EVERSPACE (both OpenGL) get a performance hit by 66% on my
Haswell Iris Pro 5200 by this commit...
6ee4b352c90e93c82d900328716c1068a7188b91 is the first bad commit
commit 6ee4b352c90e93c82d900328716c1068a7188b91
Author: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
Date: Thu Sep 28 19:03:38 2017 -0700
i965: Use prog->info.num_images for needs_dc computation
This should be just as good as looking in prog_data but removes our one
state setup dependency on brw_stage_prog_data::nr_image_param.
Reviewed-by: Jordan Justen <<a href="mailto:jordan.l.justen@intel.com">jordan.l.justen@intel.com</a>>
Reviewed-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
:040000 040000 30226198325dfb57e721eed2536d5f6a8f8d6068
db3921cc2c5ee969cef70b422f60bb744b5c144d M src
Checking out to parent commit restores full performance in both games.
Both games use UE4 Engine.
ASTROKILL (Version 0.9.2.1) comes also with a Vulkan build which is broken even
with parent commit.
I will bisect this later.
Both games work with latest stable Mesa 17.2.4 and also the Vulkan build of
ASTROKILL.
I hope you find a fix before Mesa 17.3.0 will be released.</pre>
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