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ENH: Report insufficient OpenGL support instead of crashing

Andras Lasso requested to merge github/fork/lassoan/report-opengl-error into master

Use same mechanism as ParaView to detect if VTK rendering capabilities are sufficient. If not, then a popup is displayed, which allows the user to close the application, ignore the problem (continue to launch the application), or retry (do a delayed restart, to allow reconnection through remote desktop - see

OpenGL capabilities are displayed in Details section of the popup.


Details section shows OpenGL info and link to relevant FAQ:


Delayed restart in case user clicks "Retry":



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