I'm trying to add modern OS X support to OpenTK framework. Mac OS Lion supports OpenGL 3.2 Core context. I can successfully obtain it by using CGL. However, I can't find a straight way to bind the ...

I'm trying to add AVPlayerLayer to UIView self.player = AVPlayer(URL: NSURL(fileURLWithPath: path!)) self.playerLayer = AVPlayerLayer(player: player); self.playerLayer.videoGravity = AVLayerVid...

I have created a simple drawing project,the code works fine, but I want to cache the drawing into CGlayer, because I read that its more efficient way in drawing . I have read through the documents,...

I've written an iOS app in which I'm using CGLayer quite successfully. While researching ways to squeeze a bit more performance out of this app, I came across this blog post: http://iosptl.com/post...

I'm trying to get my UITextView's corners to be masked by the rounded corners of the grouped UITableViewCell that contains it. Here's a screenshot of the cell as it currently stands Here's some...

I need QuartzCore.framework to add borderColor to a textfield, how?

I’m changing the background colour of a UIButton via this category method, using a 1px by 1px image: - (void)setBackgroundColor:(UIColor *)backgroundColor forState:(UIControlState)state { UIGraph...

I am working on a drawing app, I want to do Undo/Redo, for this I am saving CGPath on touches ended to NSMutableArray, But I am not understanding how I should render the CGPaths on click of Undo bu...

I am working with a drawing app, I am using CGlayers for drawing. On touches ended, I get image out of the layer and store it in a Array, which I use to undo operation. My touches ended function ...

I am trying to figure out the relationship between CGL and OpenGL on Mac platform. More specifically about the context. Do they share context? If yes, how? Please give me a link to some related e...

I am working with unod redo operations on CgLayer, I have tried some code, but not able to get it working, dont know , where I am getting wrong, below is my code, which i have written this is my d...

Instead of letting drawRect redraw thousands of point every time, I think there are several ways to "cache the image on screen" and any additional drawing, we will add to that image, and just show ...

I have a UIPanGestureRecognizer attached to a view in my iOS app. I copied the code from the Touches sample app for the pan handler. When the gesture starts, my code: Records the original anchor ...

I am trying to understand few things on Mac related to OpenGL framework integration in the form of layers. Well basically when I want to understand 3D technologies present in OS X and which layer i...

I'm drawing a graph on a CALayer in its delegate method drawLayer:inContext:. Now I want to support Retina Display, as the graph looks blurry on the latest devices. For the parts that I draw dire...

So I read here on SO that I can encode a CGLayerRef to a NSValue using NSValue *myCopy = [[NSValue alloc] initWithBytes:&myLayer objCType:@encode(CGLayerRef)]; but how do I recreate the CGL...