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Questions tagged [glkview]

The GLKView class simplifies the effort required to create an OpenGL ES application by providing a default implementation of an OpenGL ES-aware view in iOS 5.0 and later.

GLKView class simplifies the effort required to create an OpenGL ES application by providing a default implementation of an OpenGL ES-aware view. A GLKView directly manages a framebuffer object on developer application’s behalf; developer's application simply needs to draw into the framebuffer when the contents need to be updated.

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Freezes when scrolling UICollectionView

I'm developing photo editor app, but I have a problem with render filtered images in UICollectionView. I'm using Operation and OperationQueue. When I start scrolling the collectionView, filtered images are being updated. How can I fix…
nik3212
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How to resolve GLKView viewport issue in iOS

I am trying to display an image using OpenGL ES in iOS. But image is covering only one quadrant of the screen. How can I show it to full screen?
R. Jari
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CIContext drawImage does not work

I am not really aware of CI libraries and only functions descriptions in Apple's documentation is not enough for a person that never worked with graphics or image processing. I need to be able to process each frame (coming from camera) and put an…
Fawkes
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GLKView snapshot returning bad colors

I'm doing some fun shader stuff, but when I call snapshot I get some strange coloring artifacts. In particular, it seems that the red channel is...stuck high, maybe? UIImage* image = [(GLKView*)self.view snapshot]; Not sure what other code to show,…
Kaolin Fire
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GLKView snapshot returning an empty image only on ipad 3

I have a GLKView that have a camera stream displaying. When I try to take a snapshot of that view in ipad 3 by making [_glkView snapshot]; the UIImage generated have the correct size but the content is empty. However, if I run the same code on…
ruimas
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CIFIlter Apply to animationImages of UIImageView

Using CIFIlter I want to apply same filter to multiple images I have multiple animationImages of UIImageView let sepiaFilter = CIFilter(name:"CIColorControls") let brightness = 0.8 for image in imageView.animationImages { …
Developer
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Core Image slow rendering

I created test application with ViewController, GLKView and UISlider. Slider change value in selected filter. Rendering image very slow. What's wrong with my code? Test class of GLKview: import UIKit import CoreImage import GLKit class…
Metman
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connectionWithMediaType return nil

I try to implement video feed using glkview but always getting return nil from connectionWithMediaType when i try to rotate the rotation. here are my setup override public func viewDidLoad() { super.viewDidLoad() // Do any additional setup…
Afriyandi Setiawan
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drawImage() different on iPad and iPhone?

I have a glView which is 51x51px like this. ... glContext = EAGLContext(API: .OpenGLES2) glView = GLKView() glView.context = glContext ciContext = CIContext(EAGLContext: glContext) glView.layer.borderColor =…
Chris
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How to implement contentMode for GLKView displaying a CIImage?

I have make a GLKView subclass to display CIImage for better performance displaying the output image for a chain of CIFilters. However, it seem that I need to implement to contentMode logic in order to have a correct inRect for drawImage(image:…
Morty Choi
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Accessibility Id's for GLKView

I'm trying to write some integration tests for iOS Swift using Appium. There's a part of my app that uses a GLKView (PPSSignatureView specifically) to capture user signatures (they would swipe on screen to create a signature), but I don't see an…
vlin
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GLKView snapshot returns distorted image

I am using CIFunHouse apple demo for my project to applying filter effects, When I try to take a snapshot of GLKView on iPad Air by making UIImage* imageCaptured = [(GLKView*)_videoPreviewView snapshot]; the UIImage generated have distortion. see…
Jayesh Lathiya
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Location wrong in touchesBegan

So I am using GLKViewController and GLKView. I am debugging my app on iPhone 5s and if I view the drawableHeight and drawableWidth for the view it shows as 1136 and 640 which is correct for iphone 5s. However when I check the following…
nishant
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GLKViewController and GLKView - Rendering nothing the second time created

I have a MainMenuViewController and a GameViewController which is a GLKViewConrtroller. The first time I go from the main menu to the GameViewController everything is rendered fine. If I go back to the main menu, the GameViewController and its view…
Max
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how to set contentScaleFactor iOS

Following is not working. GLKView *view = (GLKView *)self.view; view.contentScaleFactor=1.0; logging the view and [UIScreen mainScreen] objects:
Martin
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