I've looked everywhere, but there seam to be no ruby binding that would allow to create OpenGL 3/4 context.
It do not have to be complete OpenGL binding library, just portion that creates OpenGL context.
Update: If I'm desperate enough I'll do partial glfw ruby binding with ruby ffi. So pls save me from that ;)
I have written a library that can create an OpenGL 3 or 4 context on most platforms (provided it is supported). It's called Ray. You don't have to use its drawable system or DSL, you can just use it to create a window and an OpenGL context.