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如果有更好的方法来创建模糊效果？我目前的做法似乎会产生 FPS 问题，尤其是在旧手机上。似乎 blurAmount 越高，FPS 越低。blendMode 可能是这里的原因吗？ 

        if effectsNode.parent == nil {
            let filter = CIFilter(name: "CIGaussianBlur")
            let blurAmount = 15.0
            filter!.setValue(blurAmount, forKey: kCIInputRadiusKey)

            effectsNode.filter = filter
            effectsNode.blendMode = .add

            sceneContent.removeFromParent()
            effectsNode.addChild(sceneContent)
            addChild(effectsNode)
        }

当我暂停我的游戏时，我调用 blurScreen() 来执行上面的以下代码。但是，游戏暂停的时间越长，我的 fps 似乎会随着时间的推移而下降。我尝试取出 blurScreen() 并且 FPS 问题消失了。当 blurScreen() 只被调用一次时，FPS 如何随时间下降？

编辑：

func pauseGame() {
    sceneContent.isPaused = true
    intermission = true

    physicsWorld.speed = 0

    blurScreen()
}

这是 touchesEnded() 中的代码

// Tapped pause or pause menu options
if name == "pause" && touch.tapCount == 1 && pauseSprite.alpha == 1.0 && ((!sceneContent.isPaused && !GameData.shared.midNewDay) || (!sceneContent.isPaused && sceneElements[0].editingMode)) {
                    SKTAudio.sharedInstance.pauseBackgroundMusic()
                    SKTAudio.sharedInstance.playSoundEffect("Sounds/pause.wav")

                   pauseSprite.run(SKAction.sequence([SKAction.scale(to: 1.2, duration: 0.10), SKAction.scale(to: 1.0, duration: 0.10)])) { [unowned self] in
                        self.createPauseMenu()
                        self.pauseGame()
                    }

                    return
                }

更新方法

override func update(_ currentTime: TimeInterval) {
    if GameData.shared.firstTimePlaying && GameData.shared.distanceMoved > 600 && !step1Complete {
        tutorial2()
    }

    // Check for game over
    if GameData.shared.hearts == 0 && !gameEnded {
        gameOver()
    }

    // If we're in intermission, do nothing
    if intermission || sceneContent.isPaused {
        return
    }

    // some more stuff unrelated to pausing
}
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1 回答 1

0

您正在整个场景上运行一个效果节点，该场景将在每一帧都渲染该效果，这将在您的系统上投入大量工作。如果您后面没有任何动画，我建议您通过执行此操作将您的效果节点转换为精灵节点

var spriteScene : SKSpriteNode!
func blurScreen() { 
    DispatchQueue.global(qos: .background).async { 
        [weak self] in
        guard let strongSelf = self else { return }
        let effectsNode = SKEffectNode() 

        let filter = CIFilter(name: "CIGaussianBlur") 
        let blurAmount = 10.0 
        filter!.setValue(blurAmount, forKey: kCIInputRadiusKey) 

        effectsNode.filter = filter 
        effectsNode.blendMode = .add 

        strongSelf.sceneContent.removeFromParent() 
        effectsNode.addChild(strongSelf.sceneContent) 

        let texture = self.view!.texture(from: effectsNode) 
        strongSelf.spriteScene = SKSpriteNode(texture: texture) 
        strongSelf.spriteScene.anchorPoint = CGPoint(x: 0.5, y: 0.5) 

        DispatchQueue.main.async { 
            strongSelf.sceneContent.removeFromParent() 
            strongSelf.addChild(strongSelf.spriteScene) 
        } 
    } 
}
于 2017-10-27T18:42:22.160 回答