AVPlayerLayer作为SCNMaterial无法呈现，音频播放正常 [英] AVPlayerLayer as SCNMaterial not rendered, audio playing fine

问题描述

我正在尝试使用AVPlayerLayer作为要分配给SCNSphere的SCNMaterial.

i'm trying to use a AVPlayerLayer as a SCNMaterial to be assigned to a SCNSphere.

基于: https://developer.apple.com/library/samplecode/SceneKit_Slides_WWDC2013/Listings/Scene_Kit_Session_WWDC_2013_Sources_Slides_ASCSlideMaterialLayer_m.html

我创建了一个播放器，创建了一个播放器图层，并尝试使用和不使用backgroundLayer为我的SCNSphere分配材质

I create a player, create a player layer and have tried with and without a backgroundLayer to assign as material for my SCNSphere

问题是，我在这里得到了相同的结果报告: SCNMaterialProperty不渲染层

Issue is, I get the same result reported here: SCNMaterialProperty not rendering layer

音频播放，视频完全不显示！

Audio plays, video not rendered at all!

代码很简单:

    // video player
    let path = NSBundle.mainBundle().pathForResource("tb", ofType: "mp4")
    let url  = NSURL(fileURLWithPath: path!)
    let player = AVPlayer(URL: url)             // AVPlayer
    player.actionAtItemEnd = .None
    player.play()

    let frame = CGRectMake(0, 0, 300, 300)

    let playerLayer = AVPlayerLayer()
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
    playerLayer.frame = frame
    playerLayer.player = player


    sceneMaterial = SCNMaterial()
    sceneMaterial.specular.contents = UIColor.whiteColor()
    sceneMaterial.shininess = 0.5
    sceneMaterial.diffuse.contents = playerLayer
    sphere.materials = [sceneMaterial]

如上所述，无论我是否使用backgroundLayer:CALayer并将playerLayer添加为子图层，都会得到相同的结果.

As mentioned, whether I use a backgroundLayer : CALayer and add the playerLayer as a sublayer gives the same result.

感谢您的帮助

推荐答案

在最新版本的SceneKit中，不需要使用SKScene和SKVideoNode.您可以直接将AVPlayer设置为SCNMaterialProperty实例的内容.

In recent versions of SceneKit using a SKScene and a SKVideoNode is not necessary. You can directly set the AVPlayer as the contents of a SCNMaterialProperty instance.

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