In my OpenGL game, the view always shows random garbage immediately upon launching and then starts rendering. How can I prevent this? The view is created in the nib, would it fix this if I did it programmatically? I'm using a custom NSView, not NSOpenGLView.

Clear the framebuffer as soon as it's loaded instead of waiting for the first frame to clear it. Or don't display the framebuffer until you've drawn the first frame.

What do you mean the framebuffer? How can I stop it from displaying?

The framebuffer is the chunk of video memory that you are drawing into. You can stop it from displaying by not showing the window it's in on the screen until you've drawn the first frame.

Am I able to control that If it's created in the nib?

You control when the window appears on the screen.

From where? The nib creates it and displays it automatically.

One of the window settings in Interface Builder is "visible when loaded" or something like that. You can uncheck that and then display the window when it's ready. Clearing the framebuffer when you first create it might be easier, but not as nice presentation wise.

Should I draw the first frame and then make the window visible in awakeFromNib, applicationWillFinishLaunching: or applicationDidFinishLaunching: (of the Application Delegate)?