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| Original file line number | Diff line number | Diff line change |
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| @@ -1,5 +1,5 @@ | ||
| // | ||
| // BrightXDRApp.swift | ||
| // App.swift | ||
| // BrightXDR | ||
| // | ||
| // Created by Dmitry Starkov on 28/03/2023. | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| // | ||
| // MetalView.swift | ||
| // BrightXDR | ||
| // | ||
| // Created by Dmitry Starkov on 28/03/2023. | ||
| // | ||
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| import SwiftUI | ||
| import MetalKit | ||
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| // SwiftUI view displaying static semi-transparent HDR content to enable EDR display mode | ||
| struct MetalView: NSViewRepresentable { | ||
| func makeNSView(context: Context) -> MTKView { | ||
| let view = MTKView(frame: .zero, device: context.coordinator.device) | ||
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| // Allow the view to display its contents outside of the framebuffer and bind the delegate to the coordinator | ||
| view.framebufferOnly = false | ||
| view.preferredFramesPerSecond = 1 | ||
| view.delegate = context.coordinator | ||
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| // Enable EDR | ||
| view.colorPixelFormat = MTLPixelFormat.rgba16Float | ||
| view.colorspace = CGColorSpace(name: CGColorSpace.extendedLinearSRGB) | ||
| if let layer = view.layer as? CAMetalLayer { | ||
| layer.wantsExtendedDynamicRangeContent = true | ||
| layer.isOpaque = false | ||
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| // Blend EDR layer with background | ||
| layer.compositingFilter = "multiplyBlendMode" // multiplyBlendMode, overlayBlendMode | ||
| } | ||
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| return view | ||
| } | ||
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| func updateNSView(_ view: MTKView, context: Context) { } | ||
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| func makeCoordinator() -> Coordinator { | ||
| Coordinator() | ||
| } | ||
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| class Coordinator: NSObject, MTKViewDelegate { | ||
| let device: MTLDevice? = MTLCreateSystemDefaultDevice() | ||
| var rendered: Bool = false | ||
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| func draw(in view: MTKView) { | ||
| guard !rendered else { return } | ||
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| // Create a command queue | ||
| guard let commandQueue = self.device?.makeCommandQueue() else { return } | ||
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| // Create a new command buffer and get the drawable object to render into | ||
| guard let commandBuffer = commandQueue.makeCommandBuffer(), let drawable = view.currentDrawable else { return } | ||
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| // Get the EDR Headroom ~= Display Peak Brightness / Current SDR Brightness | ||
| // If this property is greater than 1.0, the screen supports EDR values | ||
| let headroom = NSScreen.main?.maximumPotentialExtendedDynamicRangeColorComponentValue ?? 1.0 | ||
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| // Create a color and an image with EDR support | ||
| guard let colorSpace = CGColorSpace(name: CGColorSpace.extendedLinearSRGB), | ||
| let color = CIColor(red: headroom, green: headroom, blue: headroom, alpha: 0.5, colorSpace: colorSpace) else { | ||
| return | ||
| } | ||
| let image = CIImage(color: color) | ||
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| // Create a CIContext for rendering a CIImage to a destination using Metal | ||
| let renderContext = CIContext(mtlCommandQueue: commandQueue, options: [ | ||
| .workingColorSpace: colorSpace, | ||
| .workingFormat: CIFormat.RGBAf, | ||
| .cacheIntermediates: true, | ||
| .allowLowPower: false, | ||
| ]) | ||
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| // Render the CIImage | ||
| renderContext.render(image, to: drawable.texture, commandBuffer: commandBuffer, bounds: CGRect(origin: CGPoint.zero, size: view.drawableSize), colorSpace: colorSpace) | ||
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| // Present the drawable to the screen | ||
| commandBuffer.present(drawable) | ||
| // Commit the command buffer for execution on the GPU | ||
| commandBuffer.commit() | ||
| // Render an image only once | ||
| self.rendered = true | ||
| } | ||
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| func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) { } | ||
| } | ||
| } | ||
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| struct MetalView_Previews: PreviewProvider { | ||
| static var previews: some View { | ||
| MetalView() | ||
| } | ||
| } |
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BrightXDR/Preview Content/Preview Assets.xcassets/Contents.json
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| // | ||
| // TransparentWindow.swift | ||
| // BrightXDR | ||
| // | ||
| // Created by Dmitry Starkov on 28/03/2023. | ||
| // | ||
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| import SwiftUI | ||
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| /// AppKit implementation | ||
| class TransparentWindowView: NSView { | ||
| override func viewDidMoveToWindow() { | ||
| window?.backgroundColor = .clear | ||
| super.viewDidMoveToWindow() | ||
| } | ||
| } | ||
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| /// Transparent view allow overlaying UI elements on top of other windows or the desktop background | ||
| struct TransparentWindow: NSViewRepresentable { | ||
| func makeNSView(context: Self.Context) -> NSView { | ||
| return TransparentWindowView() | ||
| } | ||
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| func updateNSView(_ nsView: NSView, context: Context) { } | ||
| } | ||
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| struct TransparentWindow_Previews: PreviewProvider { | ||
| static var previews: some View { | ||
| TransparentWindow() | ||
| } | ||
| } |