OpenGL state errors with QVTKOpenGLWidget and vtk8.2

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7

Mathieu,

Thanks, I found the answer there:

// Make sure that the widget context is valid before making OpenGL calls.
// This should only take up to 4 calls to processEvents(). If this test keeps
// timing out, consider that the widget initialization is broken.
while (!_qvtkWidget->isValid()) {
    app.processEvents();
}

The OpenGL initialization occurs as a result of a Qt event! DOH!

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