private fun setup(app_delegate: AppDelegate): NativeGLKViewController
	import touches_began, touches_moved, touches_ended, touches_cancelled,
	update, should_autorotate, supported_interface_orientations,
	view_will_transition_to_size in "ObjC" `{

		app_delegate.window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];
		app_delegate.window.backgroundColor = [UIColor whiteColor]; // TODO make configurable

		// Create EAGL context and view
		EAGLContext * context = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2];
		GLKView *view = [[GLKView alloc] initWithFrame: [[UIScreen mainScreen] bounds]];
		view.context = context;

		// Ask for antialiasing
		view.drawableMultisample = GLKViewDrawableMultisample4X;
		view.drawableDepthFormat = GLKViewDrawableDepthFormat24;

		GameViewController *cont = [[GameViewController alloc] init];
		cont.view = view;

		// Setup callbacks
		NitGLKView_incr_ref(self);
		cont.nit_glk_view = self;

		// Make our controller the root
		view.delegate = cont;
		[app_delegate.window setRootViewController: cont];

		// Enable the context
		[app_delegate.window makeKeyAndVisible];
		[EAGLContext setCurrentContext: context];
		[view bindDrawable];

		return cont;
	`}