Chapter 29. Cocoa and OpenGL
This chapter is not designed to teach you OpenGL. If you want to learn OpenGL, read The OpenGL Programming Guide. This chapter is intended to show you how to do drawing with OpenGL in an application that is written using Cocoa. Like all other drawing in Cocoa, OpenGL rendering will be done in a view. Until now, all of your views have used an NSGraphicsContext to do drawing with Quartz (via NSImage, NSBezierPath, and NSAttributedString).
NSOpenGLView is a subclass of NSView that has an OpenGL drawing context. Just as you needed the focus locked on a view to do drawing with Quartz, so the OpenGL drawing context must be active for any OpenGL drawing commands to have an effect.
Here are some important methods in NSOpenGLView ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access