set evironment variable QT_LOGGING_RULES to qt.qpa.gl=true
https://blog.qt.io/blog/2014/11/27/qt-weekly-21-dynamic-opengl-implementation-loading-in-qt-5-4/
https://bugreports.qt.io/browse/QTBUG-43293
https://blog.qt.io/blog/2014/11/27/qt-weekly-21-dynamic-opengl-implementation-loading-in-qt-5-4/
https://bugreports.qt.io/browse/QTBUG-43293