[Mesa-dev] [Bug 82668] New: Can't set int attributes to certain values on 32-bit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82668

          Priority: medium
            Bug ID: 82668
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: Can't set int attributes to certain values on 32-bit
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: neil at linux.intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Mesa core
           Product: Mesa

On 32-bit builds you can't set int attributes using glUniformI* to certain
values if they happen to look like a signalling NaN number when interpreted as
a float. This is similar to bug 81150 except that it is not limited to the i965
driver.

The problem is that the attribute values are always stored in float variables
even if they are actually integers. The values are converted to float using
INT_AS_FLT and UINT_AS_FLT. I think the best thing to do would be to get rid of
these functions and have FLT_AS_UINT instead. Then we can change all of the
variables to store the values in GLuints instead of floats.

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