InterpolateScalarsBeforeMapping vtkMapper and vtkGL2PSExporter
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
If vtkMapper::InterpolateScalarsBeforeMapping is set to on, the output of vtkGL2PSExporter either ps or pdf is a dataset without colors because no texture is generated. A workaround is to set vtkGL2PSExporter::Write3DPropsAsRasterImage to on.
But the mapper may have to bypass InterpolateScalarsBeforeMapping if the render window is assigned to this exporter.
But if the render window is assigned both to a vtkRenderWindowInteractor and a vtkGL2PSExporter the behavior has to be different for both of them.