相关疑难解决方法(0)

从a中捕获帧的最有效方法是MTKView什么？如果可能的话,我想实时保存帧中的.mov文件.是否可以渲染到AVPlayer框架中？

它目前正在使用此代码绘制(基于@warrenm PerformanceShaders 项目):

func draw(in view: MTKView) {
     _ = inflightSemaphore.wait(timeout: DispatchTime.distantFuture)
             updateBuffers()

    let commandBuffer = commandQueue.makeCommandBuffer()

    commandBuffer.addCompletedHandler{ [weak self] commandBuffer in
        if let strongSelf = self {
            strongSelf.inflightSemaphore.signal()
        }
    }
   // Dispatch the current kernel to perform the selected image filter
    selectedKernel.encode(commandBuffer: commandBuffer,
        sourceTexture: kernelSourceTexture!,
        destinationTexture: kernelDestTexture!)

    if let renderPassDescriptor = view.currentRenderPassDescriptor, let currentDrawable = view.currentDrawable
    {
        let clearColor = MTLClearColor(red: 0, green: 0, blue: 0, alpha: 1)
        renderPassDescriptor.colorAttachments[0].clearColor = clearColor

        let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: …