[Bug 111263] [g965] gpu hang on uniform-update.shader_test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111263

            Bug ID: 111263
           Summary: [g965] gpu hang on uniform-update.shader_test
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Keywords: bisected, regression
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: jason at jlekstrand.net
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 144915
  --> https://bugs.freedesktop.org/attachment.cgi?id=144915&action=edit
card0 error state

Bisected to:

4bb6e6817ec5d627d58e499ca09f1f40641a1acd
Author:     Jason Ekstrand <jason at jlekstrand.net>
intel: Use a system value for gl_FragCoord

It's kind-of an anomaly that the Intel drivers are still treating
gl_FragCoord as an input.  It also makes zero sense because we have to
special-case it in the back-end.

Because ANV is the only user of nir_lower_wpos_center, we go ahead and
just update it to look for nir_intrinsic_load_frag_coord as part of this
patch.

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>


On g965, you can reproduce with:

PIGLIT_PLATFORM=gbm /tmp/build_root/m64/lib/piglit/bin/shader_runner
/tmp/build_root/m64/lib/piglit/tests/spec/glsl-1.10/execution/uniform-update.shader_test
-auto -fbo

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