[vtk-developers] Strange renderering with mixed polydata/volume with QVTKOpenGLWidget

[Utkarsh Ayachit]

>
> The test case I sent was just that.
>

Sorry, it got lost in my inbox. found it :).

Attached is another patch. This tries a different approach to addressing
the alpha issue. Leaving the QSurfaceFormat unchanged, can you try the
attached patch and tell me how it goes? It's a patch for VTK.

Thanks,
Utkarsh
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