I need a OpenGL demo which use GLKit framework on mac,the demo use GLKBaseEffect for rendering

Question

I'm trying to make a simple app with GLKit for OSX 10.8, but can't find any examples. Apple documentation is just copied from iOS to Mac with no real examples. I have a context with 3.2 profile set up, and a CVDisplayLink for drawing but nothing. I'm trying to port some simple drawing from iOS (also made with GlKit). Any help would be appreciated. Thanks.