[Mesa-dev] [Bug 32070] New: llvmpipe renders stencil demo incorrectly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32070

           Summary: llvmpipe renders stencil demo incorrectly
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
        AssignedTo: mesa-dev at lists.freedesktop.org
        ReportedBy: olvaffe at gmail.com


Created an attachment (id=40759)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=40759)
with llvmpipe

The demo in question is src/samples/stencil.c found in the demo repository. 
With swrastg_dri.so,

  $ LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=softpipe ./stencil

gives correct result, but

  $ LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe ./stencil

gives incorrect result on my x86 machine.

st/vega exhibits similar artifacts when used with llvmpipe.

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