eaglcontext

I'm trying to wrap my head around the OpenGL object model on iPhone OS. I'm currently rendering into a few different UIView s (build on CAEAGLayer s) on the screen. I currently have each of these as using separate EAGLContext , each of which has a color renderbuffer and a framebuffer. I'm rendering similar things in them, and I'd like to share textures between these instances to save memory overhead. My current understanding is that I could use the same setup (some number of contexts, each with a FBO/RBO) but if I spawn the later ones using the EAGLShareGroup of the first one, then I can

I want to use the native filters for my app, the function works but I want to avoid methods that will be removed from the documentation. I search over the whole internet and no solution. I search over the whole internet and i haven't found any solution at my problem. public func applyFilterTo(image: UIImage, filterEffect: Filter) -> UIImage? { guard let cgImage = image.cgImage, let openGLContext = EAGLContext(api: .openGLES3) else { return nil } let context = CIContext(eaglContext: openGLContext) let ciImage = CIImage(cgImage: cgImage) let filter = CIFilter(name: filterEffect.filterName)