Yes Ocean but OpenGLES2.0 don't works in Windows, you need emulate it... Becuase I say this about angle Library, if you use OpenGL standard you don't see what will appears in the device... I think this, I don't understand too much about programming, but I think if in windows you can emulate OpenGLES it's for any reason...
OpenGles1.0 can do very intersting things and it's very easy, I have a better library done whit Opengles and you can achieve nice FX make some tricks... but if the Standar it's Opengles2.0...
I don't wanna say Gernnot put Openlges 2.0 now, this it's when he can and wants, but perhaps in 3 years forward we are very rear in 3d. (Ok only we are a few guys making 3D, but sure if 3D comes good, more people comes here I prefer use GLbasic than Unity, whit this learn, Unity it's another kind of learning and simply a mode)