42 lines
1.1 KiB
Swift
Executable File
42 lines
1.1 KiB
Swift
Executable File
//
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// MetalView.swift
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// chapter06
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//
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// Created by Marius on 2/10/16.
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// Copyright © 2016 Marius Horga. All rights reserved.
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//
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import UIKit
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class MetalView: UIView {
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var commandQueue: MTLCommandQueue!
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var metalLayer: CAMetalLayer {
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return self.layer as! CAMetalLayer
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}
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override class func layerClass() -> AnyClass {
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return CAMetalLayer.self
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}
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override func didMoveToWindow() {
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super.didMoveToWindow()
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let device = MTLCreateSystemDefaultDevice()!
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commandQueue = device.newCommandQueue()
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redraw()
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}
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private func redraw() {
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let drawable = metalLayer.nextDrawable()!
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let descriptor = MTLRenderPassDescriptor()
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descriptor.colorAttachments[0].clearColor = MTLClearColorMake(0, 1, 1, 1)
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descriptor.colorAttachments[0].texture = drawable.texture
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let commandBuffer = commandQueue.commandBuffer()
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let commandEncoder = commandBuffer.renderCommandEncoder(with: descriptor)
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commandEncoder.endEncoding()
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commandBuffer.present(drawable)
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commandBuffer.commit()
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}
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}
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