Posted by gouessej on Oct 05, 2021; 9:17am
URL: https://forum.jogamp.org/Selecting-the-highest-possible-GL-profile-at-runtime-tp4041302p4041350.html

What happens when you invoke GL2 methods without calling getGL2()? Actually, as GL4bc implements GL2, you can call yourGl4bcInstance.glColor4iv​() for example.