### LayerBackedOpenGLView ###

===================================================================================================

DESCRIPTION:

The ability to render a Cocoa view hierarchy as a Core Animation layer tree opens the possibility 

of freely combining disparate types of content in ways heretofore difficult. This sample provides 

a simple example of hosting Cocoa controls as subviews of an NSOpenGLView by making the OpenGL 

view layer-backed.

Enabling the "wantsLayer" property of an NSOpenGLView activates layer-backed rendering of the 

OpenGL view. The layer-backed rendering mode uses its own NSOpenGLContext, which is distinct from

the NSOpenGLContext that the view uses for drawing in non-layer-backed mode. AppKit, working in 

concert with CoreAnimation, automatically creates this context and assigns it to the view.

Additional keyboard and mouse controls:

Press [space] to toggle rotation of the globe.

Press [w]/[W] to toggle wireframe rendering.

Press [c]/[C] to toggle displaying the Cocoa controls.

Holding and dragging the mouse to change the roll angle of the globe and the angle from which the 

light is coming.

===================================================================================================

BUILD REQUIREMENTS:

OS X 10.6 or later, Xcode 3.2 or later

===================================================================================================

RUNTIME REQUIREMENTS:

OS X 10.6 or later

===================================================================================================

PACKAGING LIST:

MainController.h/.m

The main controller that handles user interaction.

MouseIgnoringBox.h/.m

A simple NSBox subclass that ignores mouse events.

MyOpenGLView.h/.m

An NSOpenGLView subclass that renders a rotating globe.

Scene.h/.m

Encapsulation of a simple openGL-renderable scene.

Texture.h/.m

A helper class that loads an OpenGL texture from an image path.

===================================================================================================

CHANGES FROM PREVIOUS VERSIONS:

Version 1.1

- Fixed texture issues.

Version 1.0

- First version.

===================================================================================================

Copyright (C) 2007-2013 Apple Inc. All rights reserved.