Andras,
Thank you for the advice. I believe the conditions we are using QVTKOpenGLWidget are appropriate, but still it doesn’t work with 8.2. I can get QVTLOpenGLNativeWidget to work, but certain visualizations being done via glsl fragment shader code don’t seem to work right. Simple stuff like drawing lines and shading volumes. I guess it may be easier to try and get QVTLOpenGLNativeWidget to work, But does anyone understand how QVTKOpenGLWidget is supposed to initialize OpenGL? It doesn’t inherit from qopenglwidget, so there must be a different mechanism for initialization, but I can’t find it…