Last October well known open-source AMD driver developer Marek Olšák began work on OpenGL compatibility profile support for Mesa. This work is about OpenGL 3.1 with ARB_compatibility support, something generally relevant for workstation OpenGL users and one of the few remaining advantages of AMD’s current proprietary OpenGL driver…

Source: Phoronix – Marek Updates OpenGL 3.1 ARB_compatibility Support For Mesa