[Bug 91970] [BSW regression] dEQP-GLES3.functional.shaders.precision.int.highp_mul_vertex

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Sep 10 18:07:56 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=91970

            Bug ID: 91970
           Summary: [BSW regression]
                    dEQP-GLES3.functional.shaders.precision.int.highp_mul_
                    vertex
           Product: Mesa
           Version: 10.6
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: michael.w.mason at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Found this regression while testing 10.6.6 on a bsw Chromebook (cyan) with
additional Chrome OS patches. The same test passes on 10.6.6 on snd, byt, hsw,
bdw, ivb and skl Chrome OS devices. I reran the test 5 times on bsw and it
consistently failed.

Failure message:

"Number of accurate bits assumed = 32",
"iter 0, test 0: in0 = -1056263790, in1 = -1493720033, ref out = 971704494 /
0x39eb08ae",
"Comparison failed (at 0, 0): got 1119553710 / 0x42bb08ae"

When the test passes, the output has the 'accurate bits' line, followed by 128
lines similar to this:

"iter 0, test 0: in0 = -1056263790, in1 = -1493720033, ref out = 971704494 /
0x39eb08ae",
"iter 0, test 1: in0 = 1938634019, in1 = -1133464026, ref out = 2114766130 /
0x7e0cc532",
"iter 0, test 2: in0 = 677512731, in1 = 867076180, ref out = -624797476 /
0xdac258dc",

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