[Mesa-dev] [Bug 110516] OpenGLCurveEvaluator does not return affine coordinates

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110516

            Bug ID: 110516
           Summary: OpenGLCurveEvaluator does not return affine
                    coordinates
           Product: Mesa
           Version: 19.0
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: GLU
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: volkerenderlein at hotmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 144094
  --> https://bugs.freedesktop.org/attachment.cgi?id=144094&action=edit
fix for bug report

According to the spec the GLU_NURBS_VERTEX and GLU_NURBS_VERTEX_DATA callbacks
should always return affine coordinates. But in case of a NURBS curve
definition in homogeneous coordinates it returns homogeneous coordinates. The
transformation to affine coordinates is missing. See accompanying patch for a
fix.

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