hi When analyzing our game using Instruments, I've always been confused about the two items "Drawable Present" and "Drawable Presented" in the GPU column. The timing of Drawable Present seems to be when the CPU layer calls commandbuffer:present, rather than when the actual encoding is completed on the GPU. Also, what does drawable presented specifically mean? In our case, when a CPU stall occurs, it appears that the vsync interval changes in the next frame, and a surface that has already been calculated is not displayed. Why is this happening?

I use unity 2020.3.48f1 to develop a game; trying to implement Apple Services integration I use Apple unity plugins(https://github.com/apple/unityplugins) Using latest version of unity plugins I getting error in Unity project after plugin import It say "Not allowed platform VisionOS" When I tryed to use older version of the plugins I getting error on runtime when calling "var fetchItemsResponse = await GKLocalPlayer.Local.FetchItems();" in line 42 it drop EXC_BAD_ACCESS(code=257, address=0x0000...) error I tryed to use different commits from official repositorys and even custom branches of apple unity plugins like (https://github.com/muZZkat/unityplugins/tree/muzzkat/fix-fetch-items) but it did not help There is whole my script which trying to use apple unuity plugins using System.Threading.Tasks; using UnityEngine; using System.Collections; using System; using Apple.GameKit; using UnityEngine.UI; public class TheScript : MonoBehaviour { [SerializeField] InputField otp; string Signature; string TeamPlayerID; string Salt; string PublicKeyUrl; string Timestamp; void Start() { StartCoroutine(Call()); } private IEnumerator Call() { yield return new WaitForSeconds(5); Login(); } public async Task Login() { otp.text += $"Loginig... "; if (!Apple.GameKit.GKLocalPlayer.Local.IsAuthenticated) { try { var player = await GKLocalPlayer.Authenticate(); var localPlayer = GKLocalPlayer.Local; TeamPlayerID = localPlayer.TeamPlayerId; var fetchItemsResponse = await GKLocalPlayer.Local.FetchItems(); Signature = Convert.ToBase64String(fetchItemsResponse.GetSignature()); PublicKeyUrl = fetchItemsResponse.PublicKeyUrl; otp.text += $"Team Player ID: {TeamPlayerID} "; otp.text += $"PublicKeyUrl: {PublicKeyUrl} "; } catch(Exception e) { otp.text += $"Error: " + e.Message; } } else { Debug.Log("AppleGameCenter player already logged in."); } } async Task SignInWithAppleGameCenterAsync(string signature, string teamPlayerId, string publicKeyURL, string salt, ulong timestamp) { } }

Hello Everyone I am new here, I am testing game center integration and using a development build of my IOS game. I have set up a couple of achievements in app store connect, but when I trigger them in the game then they do not unlock or show up. Okay so i am signed into the game center with a sandbox account on a test advice. Is there anything else I need to configure, or do achievements usually only work after the game is released?. I will appreciate any guidance… Thanks in Advance!!!

Using Reality Composer Pro 2.0, I created a simple shader graph that displays a texture on an unlit surface: On visionOS 2 beta, I can successfully use ShaderGraphMaterial(named:from:in:) to load that shader graph material and assign it to a model entity. However, on visionOS 1.2 and earlier, either in Simulator or on the device, ShaderGraphMaterial(named:from:in:) fails and I see the following logged to the console: If, using Reality Composer Pro 1.0, I experimentally open the same project and delete and recreate exactly the same nodes above, then ShaderGraphMaterial(named:from:in:) works as expected on visionOS 1.2. Is it a known issue that Reality Composer 2 can't be used with visionOS 1? Is this intentional behavior? I've submitted feedback as FB14828873, including a sample project and repro steps. If possible, I would appreciate guidance from an Apple engineer, like "This is a known issue for [list of node types]" or "Reality Composer Pro 2 is not supported for visionOS 1 development, please refer to [documentation]" or "We recommend [workaround]." Thank you.

So, I'm done with GPTK and decided to delete it. The only thing I installed was brew -v install apple/apple/game-porting-toolkit and the external libraries from the ditto command. Now, I tried to remove it, but even after brew remove game-porting-toolkit brew autoremove all of the dependencies installed with brew are still there. The most obvious was game-porting-toolkit-compiler, but even after removing this there are so many libraries that are now orphaned and it's just impossible to manually identify those. Is there a way or is the easiest way to simply uninstall Homebrew completely and reinstall it again?

I use SCNScene.write To file ".usdz", then open the ".usdz" by SCNScene.url , all Nodes color fades. Export and load only once. The fading is not obvious. Return and repeat 4 or 5 times. It is obvious that the color is inconsistent with the original color and has become much lighter.

Due to the release of ProMotion devices, the system may switch frame rates in certain scenarios, resulting in the loss of reference value for data collected through CADisplayLink callbacks at a fixed 60Hz frame rate. We cannot distinguish whether the slow callback of CADisplayLink is due to a stutter or a system switch in frame rate. I know Hitch Time Ratio, but I can't use this scheme for some reasons. How can I distinguish between stuck and frame rate gear shift in CADisplaylink callback? In iOS 15, CADisplayLink.preferredFrameRateRange.preferred always returns 0, while minimum and maximum do change. Can I use these minimum and maximum range values as criteria to distinguish between frame rate switching and stuttering?

When running on my iPhone SE3 under IOS 18.4.1, achievement banners show as expected. The same code running on my iPad Air2 under IOS 15.8.4, achievement banners do not show, but they are accepted (as shown in the GameCenterViewController). The banners also don't show when running the simulator under iPhone 16 Pro Max under IOS 18.2 or simulator under iPhone SE3 under IOS 18.3. I haven't tried others. [Note that I clear the achievements each run during test so that I can duplicate this]

New to achievements. I added them in App Store Connect and want to test them. Apple Documentation says this: "Before you begin testing your GameKit configuration, you need to enable Debug Mode. In Xcode, choose Product > Scheme > Edit Scheme. From the Run configuration, select Options and toggle Enable Debug Mode. To begin testing your achievement configuration, open the game Progress Manager. In Xcode, choose Debug > GameKit > Manage Game Progress." Sounds easy enough, but there is no "GameKit" under Debug in Xcode 16.2.

This is the first time I have tried adding achievements to my games. The online documentation says: "Before you can access achievements in your code, you can configure them in Xcode and sync the configuration updates you make with App Store Connect. Begin configuring achievements by creating a GameKit configuration file. In Xcode, choose File > New > File from Template. Select GameKit File, and click Next. In the sheet that appears, enter a name for the configuration and click Create." Sounds easy - except Xcode 16.2 does not have a GameKit File as one of the Templates. Please advise on how to proceed and it would be nice if the documentation were updated.

Added achievements to my approved app. Added them for the next release version, which I am running in simulator. When I look at the Achievements page, I can see that there are 17 Achievements available (correct), but they all show as hidden, despite checking the "No" box in App Store Connect.

Hello! I'm a developer working on a plugin for the Elgato Stream Deck, called GPU Metrics. The plugin currently only works on Windows but I'd like to bring it to macOS. However, based on forum posts I've read (and StackOverflow) there isn't a very clear path to query GPU metrics like usage, temperature, used GPU memory, and power consumption. There are some tools out there that do similar things, but I wanted to see what would be the recommendation from Apple's engineering team to get this data via a public API. Requirements: Access GPU utilization, temperature, memory usage, power usage C/C++ based API for querying the metrics so I can expose the data to JavaScript via Node Addon No need to compatibile with Intel-based Macs, as Apple silicon will be fine for now Plugin GitHub Thank you! Noah

Hi, wanted to test if possible to use Mesa3D OGLon12+D3DMetal 2b3 to get GL>4.1 support on windows apps via D3D12Metal.. using simple wglgears.c app (similar glxgears) and running like: GALLIUM_DRIVER=d3d12 wine64 wglgears64 -info with overridden opengl32.dll using contents from: https://github.com/pal1000/mesa-dist-win/releases/download/24.3.0-rc1/mesa3d-24.3.0-rc1-release-msvc.7z I get: [D3DMetal:LOG:5E53] Unsupported API: CreateCommandQueue1 caused by: https://gitlab.freedesktop.org/mesa/mesa/-/commit/c022c9603d500b59ff5e6f93c8a214d1785ab20a API: https://learn.microsoft.com/en-us/windows/win32/api/d3d12/nf-d3d12-id3d12device9-createcommandqueue1 note setup is correct as using: GALLIUM_DRIVER=llvmpipe wine64 wglgears64 -info I get: GL_RENDERER = llvmpipe (LLVM 19.1.3, 128 bits) GL_VERSION = 4.5 (Compatibility Profile) Mesa 24.3.0-rc1 (git-85ba713d76) GL_VENDOR = Mesa GL_EXTENSIONS = GL_ARB_multisample GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_subtract r GL_EXT_texture.. etc..

In the Creating A 3D Application With Hydra Rendering tutorial on the Apple Developer website, on the last step where I execute this command: cmake -S ~/Users/macuser/CreatingA3DApplicationWithHydraRendering/ -B ~/Users/macuser/CreatingA3DApplicationWithHydraRendering/ I keep getting an error: CMake Error at CMakeLists.txt:5 (include): include could not find requested file: /Users/macuser/USDInstall/bin/pxrConfig.cmake I've tried to follow the instructions as mentioned in the README.md file included in the project files at least 5 times as well as moving the pxrConfig.cmake file around and copying it in different folders, then executed the command and was still unsuccessful into generating the proper file expected to compile and render the HydraPlayer renderer. How do I get cmake to generate the Xcode file to create the HydraPlayer renderer?

When testing my development build for gamecenter authentication, the game crashes. I've breadcrumbed it to the "await GKLocalPlayer.Authenticate();" call. Can't find any documentation on this issue and have been looking through the forums! I've already done all of the usual stuff like verifying bundle identifiers match, ensuring game center is enabled for the app, setting up app store connect, using a sandbox account, etc... Please point me to some resources if you know any. Any help is appreciated, I'm starting to lose hope here!

I have run into an issue where I am trying to use atomic_float in a swift package but I cannot get things to compile because it appears that the Swift Package Manager doesn't support Metal 3 (atomic_float is Metal 3 functionality). Is there any way around this? I am using // swift-tools-version: 6.1 and my Metal code includes: #include <metal_stdlib> #include <metal_geometric> #include <metal_math> #include <metal_atomic> using namespace metal; kernel void test(device atomic_float* imageBuffer [[buffer(1)]], uint id [[ thread_position_in_grid ]]) { } But I get an error on the definition of atomic_float . Any help, one more importantly, where I could have found this information about this limitation, would be helpful. -RadBobby

Question: I'm encountering an issue with in-app purchases (IAP) in Unity, specifically for a non-consumable product in the iOS sandbox environment. Below are the details: Environment: Unity Version: 2022.3.55f1 Unity In-App Purchasing Version: v4.12.2 Device: iPhone (15, iOS 18.1.1) Connection: Wi-Fi iOS Settings: In-App Purchases set to “Allowed” initially Problem Behavior: I attempted to purchase a non-consumable item for the first time. The payment is successfully completed by entering the password. I then background the game app and navigate to the iOS Settings to set In-App Purchases to "Don't Allow." After returning to the game and either closing or killing the app, I try to purchase the same non-consumable item again. I checked canMakePayments() through the Apple configuration, and the app correctly detected that I could not make purchases due to the restriction. I then navigate back to Settings and set In-App Purchases to "Allow." Upon returning to the game, I try purchasing the non-consumable item again. A pop-up appears, saying, "You’ve already purchased this. Would you like to get it again for free?" The issue is: Will it deduct money for the second time, and why is the system allowing the user to purchase the same non-consumable item multiple times after purchasing it once? Is this the expected behavior for Unity In-App Purchasing, or is there something I might be missing in handling non-consumable purchases in this scenario? Additional Information: I’ve confirmed that the "In-App Purchases" are set to “Allowed” before attempting the purchase again. I understand that non-consumable products should not be purchased more than once, so I’m unsure why the system is offering to let the user purchase it again. I appreciate any insights into whether this is expected behavior or if I need to adjust how I handle the purchase flow.

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!

I am suspecting that setting GCController.shouldMonitorBackgroundEvents = true does not actually make the game controllers inputs accessible to the app when it is in the background. About this value the official documentation says: A Boolean value that indicates whether the app needs to respond to controller events when it isn’t the frontmost app. Now the behavior is that when the app is in focus the users inputs do get correctly recognized but as soon as the app enters the background no inputs get recognized. The controller does not get reported as disconnecting and still works for example in launchpad. I am sure that about 2 months ago when I first used this it did work as one would expect. I also have seen that an app which lets users execute certain actions using their controller has stoped working recently, adding to my suspicion of the feature being broken. Here is a minimum reproducible example: import SwiftUI import GameController @main struct TestingControllerConnectionApp: App { @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate var body: some Scene { WindowGroup { ContentView() } } } class AppDelegate: NSObject, NSApplicationDelegate { var statusItem: NSStatusItem? var controller: GCController? func applicationDidFinishLaunching(_ notification: Notification) { setupMenuBar() GCController.shouldMonitorBackgroundEvents = true NotificationCenter.default.addObserver( self, selector: #selector(controllerDidConnect), name: .GCControllerDidConnect, object: nil ) NotificationCenter.default.addObserver( self, selector: #selector(controllerDidDisconnect), name: .GCControllerDidDisconnect, object: nil ) } @objc private func setupMenuBar() { let menu = NSMenu() menu.addItem(NSMenuItem(title: "Quit", action: #selector(quitApp), keyEquivalent: "q")) statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength) statusItem?.button?.image = NSImage(resource: .controllerBar) statusItem?.menu = menu } @objc private func quitApp() { NSApp.terminate(nil) } @objc private func controllerDidConnect(_ notification: Notification) { if let controller = notification.object as? GCController { print("Controller connected") self.controller = controller if let gamepad = controller.extendedGamepad { gamepad.buttonA.pressedChangedHandler = { _, _, pressed in print("Button A pressed: \(pressed)") } } } } @objc private func controllerDidDisconnect(_ notification: Notification) { print("Controller disconnected") } } This is created in a completely fresh Xcode project and NSHumanInterfaceDeviceUsageDescription has been added. I am using a PS5 Controller and a Mac running MacOS 15.4.1 which has been restarted and only Xcode and the app have been opened. I have tested this with setting a multitude of different entitlements and capabilities including: NSHumanInterfaceDeviceUsageDescription Supports Controller User Interaction Required background modes -> App communicates with an accessory com.apple.security.device.bluetooth com.apple.security.device.hid com.apple.security.device.usb I have also set this value at different points in the code with no change of effect. Does anybody see if there is any fault in my code or my understanding of the effect of the value 'shouldMonitorBackgroundEvents'? Or is this the functionality actually being broken on Apples part?

Hi, seems MSL is missing support for a clock() shader instruction available in other graphics APIs like Vulkan or OpenGL for example.. useful for counting cost in number of clock cycles of some code insider shader with much finer granularity than launching a micro kernel with same instructions and measuring cycles cost from CPU.. also useful for MoltenVK to support that extensions.. thanks..