[Bug 94858] McNopper Compute Shader Example40 broken on Intel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94858

            Bug ID: 94858
           Summary: McNopper Compute Shader Example40 broken on Intel
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: haagch at frickel.club
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 122788
  --> https://bugs.freedesktop.org/attachment.cgi?id=122788&action=edit
apitrace

I've been running these examples: https://github.com/McNopper/OpenGL

There don't seem to be build instructions... This works for me:

cd GLUS
cmake .
make
cd ..
cd Example40
gcc src/*.c -I ../GLUS/src/ -lGLEW -lGL -lm -L ../GLUS/ -l:libGLUS.a -lglfw
MESA_GL_VERSION_OVERRIDE=4.3 MESA_GLSL_VERSION_OVERRIDE=430 ./a.out

Intel renders this brokenness: https://www.youtube.com/watch?v=BCIh5MTDRNo
radeonsi renders this, probably correctly:
https://www.youtube.com/watch?v=Xlz36lyMFcg

Both videos are actually created with mesa git from the same attached apitrace
on this hardware:

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Wimbledon XT [Radeon HD 7970M] (rev ff)

There are no shader compile errors and mesa and apitrace report no GL errors I
can see so I assume intel should be able to render it correctly.

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