Demonstrates how to use MSAA (antialiasing) inside a CAOpenGLLayer, and how a CAOpenGLLayer backed view can have subviews, unlike an NSOpenGLView.
May require OS X 10.7 - I've not got a 10.6 machine to test on. It could just be that certain OpenGL calls need to have their extension suffix appended (e.g., glBlitFramebuffer may need to be glBlitFramebufferEXT). If you want to try it on 10.6, you'll need to change the Deployment Target (currently 10.7).
I've used Automatic Reference Counting, so that might need tweaking too to support 10.6.