I have a macos app that creates a sports scoreboard and streams this out in a third party streaming format. I need to use a library for this, which expects a CVPixelBuffer e.g. every 0.04 secs (25 fps). The scoreboard is a view with some subviews (scores, timers, etc) in an offscreen window. When a timer triggers to create a new frame, my code does: • create a bitmap-representation for the view • make a view.cacheDisplay(...) • create a CIImage from the bitmap-representation • create a CVPixelBuffer using CVPixelBufferCreate (kCVPixelFormatType_32BGRA format) • render the CIImage into the CVPixelBuffer using ciContext.render(ciImage, to: pixelBufferOut) • and finally hand over the CVPixelBuffer to the video library. Works, the app is in production. Now I come to the point where I need someone to tell me in which direction I have to think. The next feature requested is to do some animation for the scoreboard graphics , e.g. a simple "fade in" and "fade out". Later I would like to do more complex things, but let's just look at that. When I add a CABasicAnimation(keyPath: #keyPath(CALayer.opacity)) for fade in / fade out to the scoreboard base view (all views with layer), I can see it smoothly fading after I moved my offscreen to onscreen, so the animation works on screen. But in the video stream there is no animation, no fading, the content is shown with opacity 0.0 at one frame and in the next frame 1.0 (fade in) and the other way round for fade out. I have a not-animated, always visible text field displaying a timecode in the video screen and that shows every timecode in the video, so the frames are in fact generated, but contains no scoreboard view with an opacity other than 0 or 1. How can I get the rendered frames from an animation? Is it somehow possible with Core Animation? Do I have to dig into Metal? I searched for hours to find something, but "animation" leads to discussions about animations on screen, while "video" is always about AVFoundation, but there is this library I have to use. Thanks for any hints, Nina

Hi, I'm having a small App in the AppleTV-Simulator which is supposed to use the Siri-Remotes Swipe-Gesture. It works perfect on the real device but on the simulator the Swipe-Gesture is not recognized in the App but it works on the Start-Screen of the Simulator using the simulated Siri-Remote app. Here is the code which sets up the xAxis ans yAxis value change handlers: #if targetEnvironment(simulator) // Simulator let siriRemote = GCController.controllers().filter { controller in if controller.vendorName == "Gamepad" { return true } else { return false } } let sController = siriRemote.first! let inputProfile = sController.physicalInputProfile let dPad = inputProfile.dpads["Direction Pad"] self.dPad = dPad self.dPad!.xAxis.valueChangedHandler = self.directionPadXAxisValueChangeHandler self.dPad!.yAxis.valueChangedHandler = self.directionPadYAxisValueChangeHandler } #else // Device if let _ = ( notification.object as? GCController)?.microGamepad { let microProfileController = notification.object as! GCController self.microGamePad = microProfileController.microGamepad self.dPad = self.microGamePad!.dpad self.dPad!.xAxis.valueChangedHandler = self.directionPadXAxisValueChangeHandler self.dPad!.yAxis.valueChangedHandler = self.directionPadYAxisValueChangeHandler } #endif Any help is greatly appreciated. Cheers, Frank

I'm an iOS developer, and I've been testing our app in iOS 18.0 Beta. I noticed that there's a problem with the font rendering, and after troubleshooting, I've found out that it's caused by the removal of the PingFang.ttc font in 18.0. I would like to ask the reason for removing this font file and which font should be used to display Chinese in the future? My test device is an iPhone 11 Pro and the system version is iOS 18.0 (22A5297). I have also tested Beta 1 and it has the same issue. In previous versions of the system, the PingFang font is located in this directory /System/Library/Fonts/LanguageSupport/PingFang.ttc. But in iOS 18.0, the font file in this directory has become Kohinoor.ttc, and I've tested that this font can't display Chinese either. I traversed the following system font directories and could not find the PingFang.ttc font file. /System/Library/Fonts/AppFonts /System/Library/Fonts/Core /System/Library/Fonts/CoreAddition /System/Library/Fonts/CoreUI /System/Library/Fonts/LanguageSupport /System/Library/Fonts/UnicodeSupport /System/Library/Fonts/Watch Looking for answers, thanks for the help!

A sample of some error messages that are presented in the Xcode log for executon of a program. There is nothing in the messages that will help identify a component as the origin of the message, nor is there a locatable derinition for the various labels and fields of the text. What component or even framework does this set of messages originate? Your search engine is useless because it returns gibberish. It doesn’t even follow the common behavior of SEARCH ENGINES because it takes label strings compounded from common words and searches for the common word instead of using the catenated string that is the internal variable name that is in the text. 2024-06-22 19:45:58.089943-0500 RoomPlanExampleApp[733:30145] [ClientDonation] (+[PPSClientDonation isRegisteredSubsystem:category:]) Permission denied: GenerativeFunctionMetrics / ANEInferenceOperationPrepareForEncode. I am looking for a definition of the error with a way to locate the context in which the error occurs. 2024-06-22 19:45:58.089967-0500 RoomPlanExampleApp[733:30145] [ClientDonation] (+[PPSClientDonation sendEventWithIdentifier:payload:]) Invalid inputs: payload={ aneModelPath = "/System/Library/PrivateFrameworks/RoomScanCore.framework/PrecompiledModels/lcnn_floorplan_model.bundle/H14G.bundle/main/segment_0__ane/net.hwx"; bundleIdentfier = "com.example.apple-samplecode.RoomPlanExampleApp9QSS565686"; } 2024-06-22 19:45:58.094770-0500 RoomPlanExampleApp[733:30145] [ClientDonation] (+[PPSClientDonation sendEventWithIdentifier:payload:]) Invalid inputs: payload={ bundleIdentfier = "com.example.apple-samplecode.RoomPlanExampleApp9QSS565686"; e5FunctionName = main; numSegments = 1; }

If anyone even uses this, GCVirtualController from import GameController no longer plays nice with SwiftUI NavigationView Working on changes to get by... This was working in iOS 17.x but not in iOS 18 and iPadOS 18. Just a heads up...

Recently started playing this game, when I restarted my computer once it glitched out and when I tried to open it again, it said "last time you opened this app, it was force quit. Do you want to reopen it?" then the app closes itself immediately. How can I fix this? How can I remove the caches?

Does GPTK2 support all AVX instructions like F16C, or only AVX2?

My app isn’t a game app, but iOS 18 always enable Game Mode for my app automatically. I didn’t find a switch to disable it in Xcode.

when i open settings on my phone, i cant see game mode settings i work as a game tester in game company and i need more information about the game mode

Hello, I have a USDC file with vertex color (WITHOUT textures), and it displays perfectly in Preview. If I package it in a zip (without compression) and rename the resulting file to USDZ, I can see it without any issues in AVP and Mac. However, if I send it to an iPhone, the vertex color does not display. Is there anything else I need to do besides packaging the USDC without compression in a ZIP? Thank you very much.

Hey, Just watched and started investigating a new TabletopKit framework, which looks fantastic. I'm looking at how multiplayer can be tested. Found info about testing on multiple real devices here - https://developer.apple.com/documentation/tabletopkit/tabletopkitsample#Start-a-multiplayer-game-on-devices I wanted to ask about options for testing multiplayer on simulators, maybe with a simulator + a single real device. Unfortunately, having multiple VisionPros for indie development is unrealistic, so I hope there are ways to do it.

visionOS 2.0 enables passthrough with Metal now: https://developer.apple.com/wwdc24/10092 This suggests it will be possible for WebXR’s AR passthrough module to be implemented for Safari. Is this already available, perhaps behind a flag?

Hey folks, I have a legacy game that is running OpenGL ES - and it no longer works on the simulators that are running Apple Silicon, ie iPhone 15 Pro, or the 13" iPads. And yes, i'm also running on Apple Silicon (M1 Max). The apps work fine on the actual devices, but the simulator crashes on any glDrawElements with a stack that looks like the following: I have not yet seen an announcement about this not working but i've seen mention in other apps of stopping to support GL (https://github.com/maplibre/maplibre-native/issues/2351) Can anyone shed some light? I'm obviously going to try to fix it, or find a recent sample app from which to start to see what might be up. Or move to metal, but i hadn't bargained for that level of effort atm ;) Any suggestions appreciated!

What is the best way to display text over images - I'd like the image to fade to white underneath the text so that the text is easier to read since I have no control over the contents of the images. I thought about having a second label behind the actual label with the same text in a slightly larger font and white color. but I'd rather have it be a gradual fading of the image just under the text rather than what looks like 3D text. Any suggestions?

Hi, with the default values the rotation take place but changing the value not. I bind a button to a slider action: -(IBAction)rotateXAction:(id)sender { NSLog(@"%@ \n",sender); BOOL yn = YES; _rotationX = [_sliderX intValue]; if(yn) printf("rotationX %d \n",_rotationX); // value o.k [self setNeedsDisplay:YES]; } The drawRect: will not be called. What is wrong with my code, please tell me. Uwe

So I have a class that does the selection but what I get back is a total mess. Can anyone help me with the code or possibly point me at an example class that performs a magic wand selection like in photoshop? Below is my current Code but I've also attempted to use metal and I've gotten an identical result in the same amount of time var red1: CGFloat = 0 var green1: CGFloat = 0 var blue1: CGFloat = 0 var alpha1: CGFloat = 0 selectedColor.getRed(&red1, green: &green1, blue: &blue1, alpha: &alpha1) var red2: CGFloat = 0 var green2: CGFloat = 0 var blue2: CGFloat = 0 var alpha2: CGFloat = 0 pixelColor.getRed(&red2, green: &green2, blue: &blue2, alpha: &alpha2) let tolerance = CGFloat(tolerance) return abs(red1 - red2) < tolerance && abs(green1 - green2) < tolerance && abs(blue1 - blue2) < tolerance && abs(alpha1 - alpha2) < tolerance } func getPixelData(from image: UIImage) -> [UInt8]? { guard let cgImage = image.cgImage else { return nil } let width = Int(cgImage.width) let height = Int(cgImage.height) let bytesPerPixel = 4 let bytesPerRow = bytesPerPixel * width let bitsPerComponent = 8 let bitmapInfo = CGImageAlphaInfo.premultipliedLast.rawValue var pixelData = [UInt8](repeating: 0, count: width * height * bytesPerPixel) guard let context = CGContext(data: &pixelData, width: width, height: height, bitsPerComponent: bitsPerComponent, bytesPerRow: bytesPerRow, space: CGColorSpaceCreateDeviceRGB(), bitmapInfo: bitmapInfo) else { return nil } context.draw(cgImage, in: CGRect(x: 0, y: 0, width: width, height: height)) return pixelData } func performMagicWandSelection(inputImage: UIImage, selectedColor: UIColor, tolerance: Float) -> UIBezierPath? { guard let pixelData = getPixelData(from: inputImage) else { return nil } let width = Int(inputImage.size.width) let height = Int(inputImage.size.height) let bytesPerPixel = 4 let path = UIBezierPath() var isDrawing = false for y in 0..<height { for x in 0..<width { let index = (y * width + x) * bytesPerPixel let pixelColor = UIColor( red: CGFloat(pixelData[index]) / 255.0, green: CGFloat(pixelData[index + 1]) / 255.0, blue: CGFloat(pixelData[index + 2]) / 255.0, alpha: CGFloat(pixelData[index + 3]) / 255.0) if colorMatches(selectedColor: selectedColor, pixelColor: pixelColor, tolerance: tolerance) { let point = CGPoint(x: x, y: y) if !isDrawing { path.move(to: point) isDrawing = true } else { path.addLine(to: point) } } else { if isDrawing { path.close() isDrawing = false } } } } if isDrawing { path.close() } return path }

I rewrite an old project since OpenGL is deprecated and the downgrade to High Sierra goes with the lost of the old project. Here is the drawRect: - (void)drawRect:(NSRect)dirtyRect { [super drawRect:dirtyRect]; if(backgroundColor == 1) glClearColor(0.95f, 1.0, 1.0f, 1.0); else glClearColor(0.0f, 0.0f, 0.0f, 1.0f); glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glTranslatef(0.0 ,0.0, -10.0); // After mistake I wrote PushMatrix() glTranslatef(-0.01 ,-0.01, -10.0); // Screen Shot 0 // glTranslatef(-0.25 ,-0.25, -10.0); Screen Shot 1 glLineWidth(1.0); glRotated(rotationX, 1, 0, 0); glRotated(rotationY, 0, 1, 0); glCallList(axes); // After mistake I wrote PopMatrix() // Axes Vertices of xx,y,z are 1.0 // With vertices +/-0.99 nothing is drawn [self glError]; [self.openGLContext flushBuffer]; } I hope you Accept my Text and hope you can help me ! Mit freundlichen Grüßen Uwe Screen Shot 0 Screen Shot 1

Hi, I've got a well established game in gamemaker, which seems to crash on latest gen ipads. In particular have been able to reproduce in ipad 11-inch M2 in the emulator. Game launches, shows the splash screen, and seems to crash as it's leaving it, but before launching the game itself, as such the log results are rather limited. I'm attaching what I can see from the crash, and hope anyone has a suggestion in what might be different in this model of the ipad to warrant this sort of crash. Any leads would be welcome. Thank you in advance.

Working on a vision OS app. I've noticed that even when castsShadow is false, performance goes down the drain when there are more than a few dozen entities that have GroundingShadowComponent. I managed to hard crash the Vision Pro with about 200 or so entities that each had two ModelEntities with GroundingShadowComponent attached but set to castShadows = false. My solution is to add and remove the GroundingShadowComponent from entities as needed, but I thought maybe someone at Apple might want to look into this. I don't expect great performance with that many entities casting shadows, but I'd think turning the shadow off would effectively disable the component and not incur a performance penalty.

Hey everyone, My game got rejected due to Guideline 4.3. Here's the gameplay video: https://www.youtube.com/watch?v=Vb6uBUsOSDg Does anyone have experience dealing with Guideline 4.3 and can share some insights? I already appealed, explaining that my game has online multiplayer battles, but no response yet. Feeling frustrated after spending six months on this game. Any advice or suggestions would be appreciated. Thanks!