I've found it! You need to setup metalLayer.edrMetadata to something like this: metalLayer.edrMetadata = CAEDRMetadata.hdr10(minLuminance: 0, maxLuminance: 1000, opticalOutputScale: 1000) I still have to figure out the parameters and how to use all that (I see problems after app switching for example), but it works!

Tried all pixel formats. Can make photo "lighter" or "darker", but no HDR in any way. Even tried "hack from the internet" with AVPlayer, playing HDR video. Next option is to convert image into video and try to play it instead :)

Tried that. No luck :–( Here's some more code. Maybe my mistake will be visible somewhere here. PHPickerConfiguration configuration var configuration = PHPickerConfiguration(photoLibrary: .shared()) configuration.filter = PHPickerFilter.images configuration.preferredAssetRepresentationMode = .current configuration.selection = .default configuration.selectionLimit = 1 configuration.preselectedAssetIdentifiers = [] Here I get result from the Picker let provider = pickerResult.itemProvider guard provider.hasItemConformingToTypeIdentifier(UTType.image.identifier) else { throw Problem.noAssetForPickerResult } provider.loadFileRepresentation(forTypeIdentifier: UTType.image.identifier, completionHandler: convertAndExtractEXIF) Copying file to avoid any changes // inside convertAndExtractEXIF let originalUrl = Storage.documentsDirectoryUrl.appendingPathComponent("\(UUID().uuidString).heic", isDirectory: false) try! FileManager.default.copyItem(at: url, to: originalUrl) Configuring MTKView-based view private func setup() { device = MTLCreateSystemDefaultDevice() clearColor = MTLClearColorMake(0.0, 0.0, 0.0, 0.0) preferredFramesPerSecond = 1 framebufferOnly = false enableSetNeedsDisplay = true delegate = renderer if let metalLayer = layer as? CAMetalLayer { if #available(iOS 16, *) { metalLayer.wantsExtendedDynamicRangeContent = true } metalLayer.pixelFormat = .rgba16Float metalLayer.colorspace = CGColorSpace(name: CGColorSpace.extendedLinearDisplayP3) } } Drawing image from imageURL in the delegate: func draw(in view: MTKView) { guard let imageUrl else { return } Task { @MainActor [imageUrl, view] in guard let commandQueue = view.device?.makeCommandQueue() else { return print("CommandQueue problem") } guard let commandBuffer = commandQueue.makeCommandBuffer() else { return print("CommandBuffer problem") } guard let drawable = view.currentDrawable else { return print("Drawable problem") } guard let originalImage = CIImage(data: try! Data(contentsOf: imageUrl)) else { return print("Original image problem") } let originalSize = originalImage.extent.size let drawableSize = view.drawableSize let scale = min(CGFloat(drawableSize.width / originalSize.width), CGFloat(drawableSize.height / originalSize.height)) let ciImage = originalImage .transformed(by: CGAffineTransform(scaleX: scale, y: scale)) let contextOptions: [CIContextOption: Any] = [ .useSoftwareRenderer: false, ] let ciContext = CIContext(mtlCommandQueue: commandQueue, options: contextOptions) let destination = CIRenderDestination( width: Int(view.drawableSize.width), height: Int(view.drawableSize.height), pixelFormat: .bgra10_xr_srgb, commandBuffer: commandBuffer, mtlTextureProvider: { drawable.texture } ) try! ciContext.startTask(toRender: ciImage, to: destination) commandBuffer.present(drawable) commandBuffer.commit() } }

I managed to get this command line utility from previous version of macOS and alter Xcode build script to use that. Seems to work, but for release builds I will have to use 10.14.

I have the same problem. In fact, when Xcode (11.3.1) builds application distributions, it uses this utility too. This results in pretty obscure build error messages, like this:ipatool failed with an exception: #<CmdSpec::NonZeroExitException: $ /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/bitcode-build-tool -v -t /Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin --sdk /Applications/Xcode.11.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.2.sdk -o /var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-out/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib --generate-dsym /var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-out/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib.dSYM --strip-swift-symbols /var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib Status: pid 26742 exit 2 Stdout: Debug: SDK path: /Applications/Xcode.11.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.2.sdk Debug: SDK version: 13.2 Debug: PATH: ['/Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin', '/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin'] Debug: Using: /Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo MachoInfo: cd / "/Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo" "-info" "/var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib" -= Output =- Non-fat file: /var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib is architecture: arm64 Exited with 0 Debug: Command took 0 seconds Debug: Using: /Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/dwarfdump GetUUID: cd / "/Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/dwarfdump" "-u" "/var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib" -= Output =- UUID: AD0CAD3B-1B51-3327-8644-8BE1FF1F0AE9 (arm64) /var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib Exited with 0 Debug: Command took 0 seconds Debug: Using: /Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/segedit ExtractXAR: cd / "/Applications/Xcode.11.3.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/segedit" "/var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/ipatool20200211-26412-6iu957/thinned-in/arm64/Payload/[APP.app]/Frameworks/libswiftCore.dylib" "-extract" "__LLVM" "__bundle" "/var/folders/gg/sn34249n0l53vhc0_36r3y3h0000gn/T/libswiftCore.dylibsf1ejW/libswiftCore.dylib.arm64.xar" -= Output =- Exited with 0 Debug: Command took 0 seconds Stderr: bitcode-build-tool internal error Traceback (most recent call last): File "/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/bitcode-build-tool", line 10, in <module> bitcode_build_tool_main(sys.argv) File "/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/../lib/bitcode_build_tool/main.py", line 83, in main map(input_macho.buildBitcode, input_macho.getArchs()) File "/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/../lib/bitcode_build_tool/macho.py", line 130, in buildBitcode bitcode_bundle = BitcodeBundle(arch, bundle, output_path).run() File "/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/../lib/bitcode_build_tool/bundle.py", line 67, in __init__ super(BitcodeBundle, self).__init__(input_xar) File "/Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/../lib/bitcode_build_tool/bundle.py", line 26, in __init__ out = subprocess.check_output(cmd) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 216, in check_output process = Popen(stdout=PIPE, *popenargs, **kwargs) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 394, in __init__ errread, errwrite) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1047, in _execute_child raise child_exception OSError: [Errno 2] No such file or directory > /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:297:in `run' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2703:in `block in CompileOrStripBitcodeInBundle' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2642:in `each' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2642:in `CompileOrStripBitcodeInBundle' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2902:in `block in ProcessIPA' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2864:in `each' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:2864:in `ProcessIPA' /Applications/Xcode.11.3.1.app/Contents/Developer/usr/bin/ipatool:3811:in `<main>'Hope this will be fixed soon.