iOS13 SceneKit 错误 - 清除从未释放纹理

Question

我有一个 ARKit 应用程序可以在 iOS 12.x 上正常运行。在 iOS 13 我在控制台日志中遇到以下错误：

[SceneKit] Error: Purging never freed texture <AGXA9FamilyTexture: 0x11d688240>
    label = <none> 
    textureType = MTLTextureType2D 
    pixelFormat = MTLPixelFormatR16Float 
    width = 240 
    height = 1 
    depth = 1 
    arrayLength = 1 
    mipmapLevelCount = 1 
    sampleCount = 1 
    cpuCacheMode = MTLCPUCacheModeDefaultCache 
    storageMode = MTLStorageModePrivate 
    hazardTrackingMode = MTLHazardTrackingModeTracked 
    resourceOptions = MTLResourceCPUCacheModeDefaultCache MTLResourceStorageModePrivate MTLResourceHazardTrackingModeTracked  
    usage = MTLTextureUsageShaderRead MTLTextureUsageShaderWrite 
    shareable = 0 
    framebufferOnly = 0 
    purgeableState = MTLPurgeableStateNonVolatile 
    swizzle = [MTLTextureSwizzleRed, MTLTextureSwizzleGreen, MTLTextureSwizzleBlue, MTLTextureSwizzleAlpha] 
    isCompressed = 0 
    parentTexture = <null> 
    parentRelativeLevel = 0 
    parentRelativeSlice = 0 
    buffer = <null> 
    bufferOffset = 512 
    bufferBytesPerRow = 0 
    allowGPUOptimizedContents = YES
    label = <none>

它每隔几毫秒重复一次，使整个日志变得混乱。我无法缩小它的来源。

有趣的是，即使场景中没有单个节点，也会发生这种情况。如果我从视图中删除整个 sceneView 那么它就会消失......（不是一个选项）

有人知道或提示如何追踪吗？

谢谢

Answer 1

我找到了问题代码行。在 iOS 13 中对

的任何调用

SceneView.snapshot()

产生该错误。苹果文档说：

This method is thread-safe and may be called at any time.

但这似乎在 iOS13 中发生了变化。我将提交错误报告，不希望有快速的解决方案 ;-)

Answer 2

我通过更新场景相机的设置解决了这个问题：

var sceneView: ARSCNView!
...
sceneView.pointOfView?.camera?.wantsHDR = false

希望对您有所帮助。

iOS13 SceneKit 错误 - 清除从未释放纹理

iOS13 SceneKit Error – Purging never freed texture

augmented-reality

scenekit

swift

arkit

ios13