[Mesa-dev] [Bug 100854] YUV to RGB Color Space Conversion result is not precise

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100854

            Bug ID: 100854
           Summary: YUV to RGB Color Space Conversion result is not
                    precise
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: glsl-compiler
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: johnson.lin at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Use Y value 0x42, Cb Value 0x65, Cr Value 0x5E
The resulted RGB value should be 0x04, 0x60, 0x04, which is according to
https://en.wikipedia.org/wiki/YCbCr

But Shader CSC result is 0x05, 0x60, 0x05.
In some situation, it has a bit difference with what is precise
Seems the matrix it is using has some problem

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