[vtk-developers] glCopyTexImage2D errors + black windows when porting QVTKWidget -> QVTKOpenGLWidget

[Utkarsh Ayachit]

>
> Regarding setting max samples to 0, does this mean I will no longer be
> able to use MSAA? I wasn't actually doing that in the old code (setting it
> to 0), just hadn't ported that part so it was commented when I ported to
> the new widget. But I was using MSAA at one point and it was working fine
> (samples set to 8). Will this no longer be possible with the new widget?
>

MSAA works fine with QVTKOpenGLWidget. We use it in ParaView for 2D chart
views. It's worth also trying out the
`vtkGUISupportQtCxx-TestQVTKOpenGLWidgetWithMSAA` test.
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