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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [regression, bisected] all textureGather piglits fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96656">96656</a>
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<th>Summary</th>
<td>[regression, bisected] all textureGather piglits fail
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<th>Product</th>
<td>Mesa
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<th>Version</th>
<td>git
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>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>Mesa core
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>samuel.pitoiset@gmail.com
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
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<pre>Hi,
After bisecting, the first bad commit is:
3735a925ef5692c836c4d26d6adee370dae1c2b0 is the first bad commit
commit 3735a925ef5692c836c4d26d6adee370dae1c2b0
Author: Nicolai Hähnle <<a href="mailto:nicolai.haehnle@amd.com">nicolai.haehnle@amd.com</a>>
Date: Wed Jun 8 13:24:14 2016 +0200
st/mesa: cache staging texture for glReadPixels
v2: add ST_DEBUG flag for disabling (suggested by Ilia)
Reviewed-by: Marek Olšák <<a href="mailto:marek.olsak@amd.com">marek.olsak@amd.com</a>> (v1)
:040000 040000 f3adb5adc43e4def32bd23896489520d8cae84c6
72b374e2221e9cc1306d7bfacf39780ec5e42d36 M src
Test case:
bin/textureGather fs nonconst r 0 float 2D repeat -auto -fbo
[And all textureGather variants also fail.]
Hardware:
NVIDIA GK107, but this probably affects all Gallium drivers.
Disabling the glReadPixels cache fixes the regression.
$ ST_DEBUG="noreadpixcache" bin/textureGather fs nonconst r 0 float 2D repeat
-auto -fbo
PIGLIT: {"result": "pass" }</pre>
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