Today after tinkering a few hours I managed to get an fpGui hello world app running with OpenGL and GLut as back-end. It seemed even easier than anticipated to switch the back-end. I'm happy to share code, although due to implementation differences it will never be possible to have a clean solution which could be merged with the original source.
Cheers, Darius PS. fonts are rendered using freetype, used font is Ubuntu-R
<<attachment: fpGUI_OpenGL.jpg>>
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