d04612b60d98ff785646affaffc3d7243deecb74 regressed this test on 32 bit hsw/ivb: Author: Jordan Justen <jordan.l.justen@intel.com> AuthorDate: Wed Sep 2 15:47:33 2015 -0700 Commit: Jordan Justen <jordan.l.justen@intel.com> CommitDate: Wed Dec 9 23:50:38 2015 -0800 i965: Enable ARB_compute_shader extension on supported hardware Enable ARB_compute_shader on gen7+, on hardware that supports the OpenGL 4.3 requirements of a local group size of 1024. With SIMD16 support, this is limited to Ivy Bridge and Haswell. Broadwell will work with a local group size up to 896 on SIMD16 meaning programs that use this size or lower should run when setting MESA_EXTENSION_OVERRIDE=GL_ARB_compute_shader. Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Reviewed-by: Kristian Høgsberg <krh@bitplanet.net> Test output: /tmp/build_root/m32/lib/piglit/bin/shader_runner /tmp/build_root/m32/lib/piglit/tests/spec/arb_compute_shader/execution/atomic-counter.shader_test -auto piglit: debug: Requested an OpenGL 3.2 Core Context, and received a matching 3.3 context Atomic counter 1 test failed: Reference == Observed Reference: 2147483647 Observed: 4294966784
I believe this is a bug in shader_runner. I've posted a patch to the piglit mailing list: http://mid.gmane.org/20160601050207.1542-1-kenneth@whitecape.org Note that the observed value matches the test, but the /expected/ value (i.e. the one written directly in the script) is bogus. Seems to be scanf fail.
*** Bug 96298 has been marked as a duplicate of this bug. ***
Fixed in Piglit by: commit bca09cba2acf44405f433162755bd151bc850442 Author: Kenneth Graunke <kenneth@whitecape.org> Date: Tue May 31 21:50:48 2016 -0700 shader_runner: Use %u in "probe atomic counter" scanf calls.
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