[Mesa-dev] [Bug 72623] New: [llvmpipe] piglit arb_color_buffer_float-drawpixels GL_RGBA16F regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72623

          Priority: medium
            Bug ID: 72623
          Keywords: regression
                CC: jfonseca at vmware.com, sroland at vmware.com,
                    zackr at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [llvmpipe] piglit arb_color_buffer_float-drawpixels
                    GL_RGBA16F regression
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vlee at freedesktop.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Other
           Product: Mesa

mesa: e84a1ab3c400f819408a7ebe01c2325cd59d94d3 (master)

$ ./bin/arb_color_buffer_float-drawpixels GL_RGBA16F -auto
Testing 16-bit floating-point FBO
glDrawPixels of fbo with fragment clamp TRUE  (expecting clamping)
Intrinsic has incorrect argument type!
void (i32*)* @llvm.x86.sse.stmxcsr
Intrinsic has incorrect argument type!
void (i32*)* @llvm.x86.sse.stmxcsr
Intrinsic has incorrect argument type!
void (i32*)* @llvm.x86.sse.ldmxcsr
Intrinsic has incorrect argument type!
void (i32*)* @llvm.x86.sse.ldmxcsr
Broken module found, verification continues.


155139059ba588da1161eaa692515cacdead9f4e is the first bad commit
commit 155139059ba588da1161eaa692515cacdead9f4e
Author: Zack Rusin <zackr at vmware.com>
Date:   Fri Dec 6 01:28:25 2013 -0500

    llvmpipe: fix blending with half-float formats

    The fact that we flush denorms to zero breaks our half-float
    conversion and blending. This patches enables denorms for
    blending. It's a little tricky due to the llvm bug that makes
    it incorrectly reorder the mxcsr intrinsics:
    http://llvm.org/bugs/show_bug.cgi?id=6393

    Signed-off-by: Zack Rusin <zackr at vmware.com>
    Reviewed-by: José Fonseca <jfonseca at vmware.com>
    Reviewed-by: Roland Scheidegger <sroland at vmware.com>
    Signed-off-by: Zack Rusin <zackr at vmware.com>

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