[Bug 96346] [SNB,CTS] es2-cts.gtf.gl.atan regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96346

            Bug ID: 96346
           Summary: [SNB,CTS] es2-cts.gtf.gl.atan regression
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

The following tests regressed:
es2-cts.gtf.gl.atan.atan_vec3_frag_xvary
es2-cts.gtf.gl.cos.cos_vec2_frag_xvary
es2-cts.gtf.gl.atan.atan_vec2_frag_xvary
es2-cts.gtf.gl.pow.pow_vec2_frag_xvary_yconsthalf
es2-cts.gtf.gl.cos.cos_float_frag_xvary
es2-cts.gtf.gl.pow.pow_float_frag_xvary_yconsthalf
es2-cts.gtf.gl.atan.atan_vec3_frag_xvaryyvary
es2-cts.gtf.gl.pow.pow_vec3_frag_xvary_yconsthalf
es2-cts.gtf.gl.cos.cos_vec3_frag_xvary
es2-cts.gtf.gl.atan.atan_vec2_frag_xvaryyvary

Bisected to series ending in c1107ce


sample output:
/tmp/build_root/m64/bin/cts/glcts
--deqp-case=ES2-CTS.gtf.GL.atan.atan_vec3_frag_xvary
dEQP Core GL-CTS-2.0 (0x0052484b) starting..
  target implementation = 'intel-gbm'

Test case 'ES2-CTS.gtf.GL.atan.atan_vec3_frag_xvary'..
#+ GTF/GL/atan/atan_vec3_frag_xvary.shader1.ppm and
GTF/GL/atan/atan_vec3_frag_xvary.shader2.ppm are different
  Fail (Fail)

DONE!

Test run totals:
  Passed:        0/1 (0.00%)
  Failed:        1/1 (100.00%)
  Not supported: 0/1 (0.00%)
  Warnings:      0/1 (0.00%)

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