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飛び道具ではないMetal #iOSDC
The document discusses the use of Apple's Metal framework for graphics rendering and machine learning applications on iOS. It includes code snippets demonstrating the creation and management of the Metal command queue, blit command encoders, and texture loading. Additionally, it highlights the comparison between Metal and OpenGL regarding GPU functionality and performance.
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飛び道具ではないMetal #iOSDC
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- 18. Metal GPU • Core ML •Vision • Core Image • SceneKit • SpriteKit • MapKit
- 19. Metal GPU • Core ML •Vision • Core Image • SceneKit • SpriteKit • MapKit • Core Animation • UIKit
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- 34. • CPU - 100% •GPU GPU - - - -
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- 43. Metal • Apple • Apple •OpenGL 10 • OpenGL Metal
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- 48. func draw(in view:MTKView) { guard let drawable = view.currentDrawable else {return} guard let commandBuffer = commandQueue.makeCommandBuffer() else {fatalError()} guard let blitEncoder = commandBuffer.makeBlitCommandEncoder() else {fatalError()} let targetW = min(texture.width, drawable.texture.width) let targetH = min(texture.height, drawable.texture.height) blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: MTLOrigin(x: 0, y: 0, z: 0), sourceSize: MTLSizeMake(targetW, targetH, texture.depth), to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin: MTLOrigin(x: 0, y: 0, z: 0)) blitEncoder.endEncoding() commandBuffer.present(drawable) commandBuffer.commit() commandBuffer.waitUntilCompleted() } private let device = MTLCreateSystemDefaultDevice()! private func setup() { commandQueue = device.makeCommandQueue() let textureLoader = MTKTextureLoader(device: device) texture = try! textureLoader.newTexture(name: "highsierra", scaleFactor: view.contentScaleFactor, bundle: nil) mtkView.device = device mtkView.delegate = self mtkView.colorPixelFormat = texture.pixelFormat }
- 49. • MTLDevice • MTLCommandQueue •MTLCommandBuffer • MTLCommandEncoder • MTLTexture • MTKView • MTKTextureLoader • etc…
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- 63. MTLDevice let device =MTLCreateSystemDefaultDevice()! ※
- 64. MTLTexture, MTKTextureLoader // loader =MTKTextureLoader(device: device) // texture = try! loader.newTexture( name: “hoge", scaleFactor: view.contentScaleFactor, bundle: nil) ※
- 65. MTLCommandQueue, MTLCommandBuffer // let commandBuffer= commandQueue.makeCommandBuffer()! // … // commandBuffer.commit() ※ // commandQueue = device.makeCommandQueue()
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- 67. MTLCommandEncoder (MTLBlitCommandEncoder) let blitEncoder= commandBuffer.makeBlitCommandEncoder()! blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: srcOrigin, sourceSize: srcSize, to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin:dstOrigin) blitEncoder.endEncoding() ※
- 68. MTLCommandEncoder (MTLBlitCommandEncoder) let blitEncoder= commandBuffer.makeBlitCommandEncoder()! blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: srcOrigin, sourceSize: srcSize, to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin:dstOrigin) blitEncoder.endEncoding() ※
- 69. // let commandBuffer =commandQueue.makeCommandBuffer()! // let blitEncoder = commandBuffer.makeBlitCommandEncoder()! blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: srcOrigin, sourceSize: srcSize, to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin:dstOrigin) // blitEncoder.endEncoding() // commandBuffer.commit() ※
- 70. private let device= MTLCreateSystemDefaultDevice()! private func setup() { commandQueue = device.makeCommandQueue() let textureLoader = MTKTextureLoader(device: device) texture = try! textureLoader.newTexture(name: "highsierra", scaleFactor: view.contentScaleFactor, bundle: nil) mtkView.device = device mtkView.delegate = self mtkView.colorPixelFormat = texture.pixelFormat } func draw(in view: MTKView) { guard let drawable = view.currentDrawable else {return} guard let commandBuffer = commandQueue.makeCommandBuffer() else {fatalError()} guard let blitEncoder = commandBuffer.makeBlitCommandEncoder() else {fatalError()} let targetW = min(texture.width, drawable.texture.width) let targetH = min(texture.height, drawable.texture.height) blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: MTLOrigin(x: 0, y: 0, z: 0), sourceSize: MTLSizeMake(targetW, targetH, texture.depth), to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin: MTLOrigin(x: 0, y: 0, z: 0)) blitEncoder.endEncoding() commandBuffer.present(drawable) commandBuffer.commit() commandBuffer.waitUntilCompleted() }
- 71. private let device= MTLCreateSystemDefaultDevice()! private func setup() { commandQueue = device.makeCommandQueue() let textureLoader = MTKTextureLoader(device: device) texture = try! textureLoader.newTexture(name: "highsierra", scaleFactor: view.contentScaleFactor, bundle: nil) mtkView.device = device mtkView.delegate = self mtkView.colorPixelFormat = texture.pixelFormat } → → GPU → GPU → func draw(in view: MTKView) { guard let drawable = view.currentDrawable else {return} guard let commandBuffer = commandQueue.makeCommandBuffer() else {fatalError()} guard let blitEncoder = commandBuffer.makeBlitCommandEncoder() else {fatalError()} let targetW = min(texture.width, drawable.texture.width) let targetH = min(texture.height, drawable.texture.height) blitEncoder.copy(from: texture, sourceSlice: 0, sourceLevel: 0, sourceOrigin: MTLOrigin(x: 0, y: 0, z: 0), sourceSize: MTLSizeMake(targetW, targetH, texture.depth), to: drawable.texture, destinationSlice: 0, destinationLevel: 0, destinationOrigin: MTLOrigin(x: 0, y: 0, z: 0)) blitEncoder.endEncoding() commandBuffer.present(drawable) commandBuffer.commit() commandBuffer.waitUntilCompleted() }
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- 75. Metal • ARKit • MPSCNN / RNN • Core Image
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- 77. • Metal -UIKit • GPU GPU • Metal - Metal / OpenGL • Metal -
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