https://github.com/honghaoz/calayerdrawcontext-issue-ventura

CALayerDrawContext Issue on Ventura (CGBitmapContextGetWidth: invalid context 0x600003876e80)
https://github.com/honghaoz/calayerdrawcontext-issue-ventura

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CALayerDrawContext Issue on Ventura (CGBitmapContextGetWidth: invalid context 0x600003876e80)

• Host: GitHub
• URL: https://github.com/honghaoz/calayerdrawcontext-issue-ventura
• Owner: honghaoz
• Created: 2023-06-29T03:45:39.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-06-29T03:51:08.000Z (over 1 year ago)
• Last Synced: 2023-07-31T15:46:51.797Z (over 1 year ago)
• Language: Swift
• Size: 27.3 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# CALayerDrawContext-Issue-Ventura

`CALayer` invalid CGContext on Ventura `(CGBitmapContextGetWidth: invalid context 0x600003876e80)`

The following code runs well on macOS Monteray but broken on macOS Ventura (tested on `13.3.1` and `13.4.1`)

```swift

import Cocoa

class ViewController: NSViewController {

    class TestLayer: CALayer {

        override func draw(in ctx: CGContext) {

            super.draw(in: ctx)

            print("context.width: \(ctx.width))")

            print("context.width: \(ctx.height))")

            print("context: \(ctx))")

        }

    }

    private let testLayer = TestLayer()

    override func viewDidLoad() {

        super.viewDidLoad()

        view.wantsLayer = true

        view.layer?.backgroundColor = NSColor.red.cgColor

        testLayer.frame = CGRect(x: 0, y: 0, width: 100, height: 100)

        view.layer?.addSublayer(testLayer)

    }

    override func viewDidAppear() {

        testLayer.setNeedsDisplay()

    }

    override var representedObject: Any? {

        didSet {

        // Update the view, if already loaded.

        }

    }

}

```

The error message:

```

2023-06-28 20:47:56.423328-0700 CALayerDrawContext[68964:1640092] [demo.CALayerDrawContext.CALayerDrawContext] CGBitmapContextGetWidth: invalid context 0x6000039dea00. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

context.width: 0)

2023-06-28 20:47:56.423407-0700 CALayerDrawContext[68964:1640092] [demo.CALayerDrawContext.CALayerDrawContext] CGBitmapContextGetHeight: invalid context 0x6000039dea00. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

context.width: 0)

context:  (kCGContextTypeCoreAnimationAutomatic))

```