如何调整MTLTexture的大小/缩放

import Metal

func resizeTexture(sourceTexture: MTLTexture, destinationTexture: MTLTexture) {
    let commandQueue = device.makeCommandQueue()
    let commandBuffer = commandQueue?.makeCommandBuffer()
    
    if let commandBuffer = commandBuffer,
       let blitEncoder = commandBuffer.makeBlitCommandEncoder() {
        
        blitEncoder.copy(from: sourceTexture,
                         sourceSlice: 0,
                         sourceLevel: 0,
                         sourceOrigin: MTLOriginMake(0, 0, 0),
                         sourceSize: MTLSizeMake(sourceTexture.width, sourceTexture.height, sourceTexture.depth),
                         to: destinationTexture,
                         destinationSlice: 0,
                         destinationLevel: 0,
                         destinationOrigin: MTLOriginMake(0, 0, 0))
        
        blitEncoder.endEncoding()
    }
    
    commandBuffer?.commit()
}