[Mesa-dev] [Bug 92122] [bisected] Regression with Assault Android Cactus

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92122

            Bug ID: 92122
           Summary: [bisected] Regression with Assault Android Cactus
           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: daniel at constexpr.org
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 118450
  --> https://bugs.freedesktop.org/attachment.cgi?id=118450&action=edit
Bad rendering

Rendering is broken with current Mesa in Assault Android Cactus. Bisected to:

commit 266d05a3a0651ac954c91aea12c870940e8a9820
Author: Tapani Pälli <tapani.palli at intel.com>
Date:   Fri Sep 25 09:56:39 2015 +0300

    glsl: fix packed varyings interface type and add default case

    fixes Piglit test:
       arb_program_interface_query/linker/query-varyings.shader_test

    Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
    Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>


GPU; Radeon HD 7950 (TAHITI)
LLVM r247876
Linux 4.2.0-gentoo-r1

Apitrace recorded with 266d05:
http://constexpr.org/tmp/Cactus-radeonsi-bad.trace.xz

Apitrace recorded with an older commit:
http://constexpr.org/tmp/Cactus-radeonsi-good.trace.xz

It doesn't matter wich commit the apitraces are played back on, the first one
is always good and the second one always bad. However, playing back the bad
apitrace on good Mesa gives lots of warnings like this one:

3444 @0 glGetAttribLocationARB(programObj = 6, name = "xlv_TEXCOORD0") = 10
3444: warning: vertex attrib location mismatch 10 -> -1

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