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    <p>Definitely you seem to be calling setContext on a standard UIView, rather than on an EAGLView. Your view controller should probably implement -loadView, and do something like this:</p> <pre><code>- (void)loadView { self.view = [[EAGLView alloc] initWithFrame:[UIScreen mainScreen].bounds]; } </code></pre> <p>One thing that seems odd is that you're initializing your view controller with initWithNibName rather than initWithFrame, which is what I would expect you need to do when doing away with nib/xib files.</p> <p>Here's what I'm doing, maybe it will help. </p> <p>(Note that: I have a custom view controller, which has a UIView and a subview which is the EAGLView. (I'm also working on adding an ADBanner subview). I'm not calling 'init' on my controller, its <em>view</em> gets loaded when I try to add it to the window as a subview.)</p> <p>main.m - similar.</p> <p>AppDelegate.m:</p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Create the window programatically: window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; controller = [GLViewController alloc]; [window addSubview:controller.view]; glView = [controller.glView retain]; [window makeKeyAndVisible]; return YES; } </code></pre> <p>ViewController.h:</p> <pre><code>@interface GLViewController : UIViewController &lt;ADBannerViewDelegate&gt; { EAGLView *glView; } @property(nonatomic, retain) /*IBOutlet*/ EAGLView *glView; @end </code></pre> <p>ViewController.m:</p> <pre><code>- (void)loadView { self.view = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds]; } -(void)viewDidLoad { [super viewDidLoad]; glView = [[EAGLView alloc] initWithFrame:[UIScreen mainScreen].bounds]; glView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleBottomMargin; glView.userInteractionEnabled=YES; [self.view addSubview:glView]; } </code></pre> <p>EAGLView.m:</p> <pre><code>- (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;// JPS - WARNING: this does not work on iOS 3.2!!! self.contentScaleFactor = [UIScreen mainScreen].scale; CGSize displaySize = [[UIScreen mainScreen]currentMode].size; CGRect displayRect = [UIScreen mainScreen].bounds; eaglLayer.frame = displayRect; eaglLayer.opaque = YES; eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys : [NSNumber numberWithBool : NO], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; context = [[EAGLContext alloc] initWithAPI : kEAGLRenderingAPIOpenGLES1]; if (!context || ![EAGLContext setCurrentContext : context]) { [self release]; return; } glGenFramebuffersOES(1, &amp;viewFramebuffer); glGenRenderbuffersOES(1, &amp;viewRenderbuffer); glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer *)self.layer]; glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer); glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &amp;backingWidth); glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &amp;backingHeight); glGenRenderbuffersOES(1, &amp;depthRenderbuffer); glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer); glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight); glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer); // Set up thd display link to sync rendering with vblank animating = FALSE; displayLinkSupported = FALSE; animationFrameInterval = 1; displayLink = nil; animationTimer = nil; // A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer // class is used as fallback when it isn't available. NSString *reqSysVer = @"3.1"; NSString *currSysVer = [[UIDevice currentDevice] systemVersion]; if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending) displayLinkSupported = TRUE; } return self; } </code></pre>
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