MPSAndCIFilterOnVisionOS 用来演示如何在 visionOS 上使用 MetalPerformanceShaders(缩写：MPS) 和 CIFilter 实现特殊视觉效果，不仅能实现 ShaderGraph 中 SurfaceShader 的类似效果，还能更高效的实现 GaussianBlur、 Histogram 等效果。
MPSAndCIFilterOnVisionOS demonstrates how to use MetalPerformanceShaders (MPS) and CIFilter on visionOS to achieve special visual effects. It not only replicates effects similar to SurfaceShader in ShaderGraph, but also enables more efficient implementations of effects such as GaussianBlur and Histogram.
使用流程 Process：
- Image: MPS/CIFilter -> LowLevelTexture -> TextureResource -> UnlitMaterial
- Video(CIFilter): [CIFilter + AVMutableVideoComposition + AVPlayerItem] -> VideoMaterial
- Video(MPS): [MPS + AVMutableVideoComposition + AVPlayerItem] -> LowLevelTexture -> TextureResource -> UnlitMaterial