[Mesa-dev] [Bug 96656] [regression, bisected] all textureGather piglits fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96656

            Bug ID: 96656
           Summary: [regression, bisected] all textureGather piglits fail
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: samuel.pitoiset at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Hi,

After bisecting, the first bad commit is:

3735a925ef5692c836c4d26d6adee370dae1c2b0 is the first bad commit
commit 3735a925ef5692c836c4d26d6adee370dae1c2b0
Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
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 <marek.olsak at amd.com> (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" }

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/mesa-dev/attachments/20160623/70f3ee6b/attachment.html>