makeTextureFromCVPixelBuffer

makeTextureFromCVPixelBuffer.swift

	func makeTextureFromCVPixelBuffer(pixelBuffer: CVPixelBuffer, textureFormat: MTLPixelFormat) -> MTLTexture? {
		let width = CVPixelBufferGetWidth(pixelBuffer)
		let height = CVPixelBufferGetHeight(pixelBuffer)
		
		// Create a Metal texture from the image buffer.
		var cvTextureOut: CVMetalTexture?
		CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, nil, textureFormat, width, height, 0, &cvTextureOut)
		
		guard let cvTexture = cvTextureOut, let texture = CVMetalTextureGetTexture(cvTexture) else {
			CVMetalTextureCacheFlush(textureCache, 0)
			
			return nil
		}
		
		return texture
	}