I just say Opengl is sucky land, everybody hates it like hell, I dont programm opengl so I dont care to much, but 3d-Developers seem to do, at some point Opengl has to die. It evolves to slow, even DX gets a complete Restart now. And Opengl is no longer primary 3d engine under macosx. So you think opengl as a more or less linux-only library in the long run is a good alternative?
Its good enough for 3d-Desktop or Map-apps, but for game-development it did die after Quake3 or so 10 years ago. People only use it when the want really hard something that runs under linux and because there is nothing else under linux, but all AAA Titel are not developed in Opengl, it has maybe a reason.