this demo shows how to use a gestalt renderer, completly strip it of all functionality and than render 'raw' opengl with just a single 'drawable'. this is a proof of concept and not the ideal way to do it.
another reason for writing this demo was that processing 'messes' up some opengl states, which are restored by 'gestalt'. this way one could say that it is a bit saver to use opengl from within 'gestalt'.

Source code: UsingOpenGL

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