Sprite kit 从SKView获取SpriteKit纹理在104次调用后返回nil

在创建纹理时，我在SpriteKit中有一些奇怪的行为。下面的函数显示我正在做什么。简而言之，我在SceneKit中，用一系列颜色（想想像素/体素）制作一个SCNNode。它就像一个符咒。但是，在精确调用104次之后，返回的纹理为nil。之后，无论纹理是否为零，都会命中或未命中。我也提供确切的颜色信息。想法

   func create2dModelSK(with colors: [String]) -> SCNNode? {
    let geo = SCNBox(width: 1.0, height: 1.0, length: 0.1, chamferRadius: 0.0)

    let base = SCNNode(geometry: geo)

    let view = SKSpriteNode(color: .white, size: CGSize(width: 160, height: 160))
    view.anchorPoint = CGPoint(x: 0, y: 1)
    var xOffset = 0
    var yOffset = 0
    var count = 0
    for _ in 0...15 {
        for _ in 0...15 {
            guard let newColor = UIColor(hexString: "#" + colors[count] + "ff") else { return base }

            let n = SKSpriteNode(color: newColor, size: CGSize(width: 10, height: 10))
            n.anchorPoint = CGPoint(x: 0, y: 1)
            n.position = CGPoint(x: xOffset, y: yOffset)
            view.addChild(n)
            xOffset += 10
            count += 1
        }
        xOffset = 0
        yOffset -= 10
    }
    let skView = SKView(frame: CGRect(x: 0, y: 0, width: 160, height: 160))

    let texture = skView.texture(from: view)
    //AFTER being called 104 times, texture is nil.
    let faceMaterial = SCNMaterial()
    faceMaterial.diffuse.contents = texture

    let sideMaterial = SCNMaterial()
    sideMaterial.diffuse.contents = UIColor.white

    let materialsForBox = [faceMaterial,sideMaterial,faceMaterial,sideMaterial,sideMaterial,sideMaterial]
    base.geometry?.materials = materialsForBox

    let scale = SCNVector3(x: 0.1, y: 0.1, z: 0.1)
    base.scale = scale

    return base
}

---

这是

autoreleasepool

方便的地方，它允许您在

autoreleasepool

完成时释放内存，这样您就不会在再次使用它之前耗尽空间

当然，这并不能解决您的主要问题，即您创建的纹理太多，并且内存空间不足，但它至少允许您制作更多的纹理，因为它将释放

view.texture（from:node）

保留的临时内存

func create2dModelSK(with colors: [String]) -> SCNNode? {
    let geo = SCNBox(width: 1.0, height: 1.0, length: 0.1, chamferRadius: 0.0)

    let base = SCNNode(geometry: geo)

    let view = SKSpriteNode(color: .white, size: CGSize(width: 160, height: 160))
    view.anchorPoint = CGPoint(x: 0, y: 1)
    var xOffset = 0
    var yOffset = 0
    var count = 0
    for _ in 0...15 {
        for _ in 0...15 {
            guard let newColor = UIColor(hexString: "#" + colors[count] + "ff") else { return base }

            let n = SKSpriteNode(color: newColor, size: CGSize(width: 10, height: 10))
            n.anchorPoint = CGPoint(x: 0, y: 1)
            n.position = CGPoint(x: xOffset, y: yOffset)
            view.addChild(n)
            xOffset += 10
            count += 1
        }
        xOffset = 0
        yOffset -= 10
    }
    autoreleasepool{
        let skView = SKView(frame: CGRect(x: 0, y: 0, width: 160, height: 160))

        let texture = skView.texture(from: view)
        //AFTER being called 104 times, texture is nil.
        let faceMaterial = SCNMaterial()
        faceMaterial.diffuse.contents = texture

        let sideMaterial = SCNMaterial()
        sideMaterial.diffuse.contents = UIColor.white

        let materialsForBox = [faceMaterial,sideMaterial,faceMaterial,sideMaterial,sideMaterial,sideMaterial]
        base.geometry?.materials = materialsForBox
    }
    let scale = SCNVector3(x: 0.1, y: 0.1, z: 0.1)
    base.scale = scale

    return base
}

---

纹理空间即将用完。请避免调用节点“视图”，因为这只会增加混淆。谢谢您的快速回答。有没有更好的方法来考虑添加这么多纹理？我不认为我需要超过1000个。你想做什么？我正在给ARKit场景添加SCNNodes。每个节点都需要自己的纹理以及提供给上述函数的数据。数据是从多个位置提供的，但它们都会反馈到场景中。此外，在您的答案中调用autoreleasepool也不起作用，因为它变成了自己的范围。