# permuteChannels(to:destination:) Permutes the channels of an 8-bit-per-channel, 3-channel interleaved pixel buffer. ``` func permuteChannels(to permuteMap: (UInt8, UInt8, UInt8), destination: vImage.PixelBuffer) ``` ## Parameters `permuteMap` A tuple of three 8-bit integers with the values 0, 1, and 2 in some order. `destination` The destination pixel buffer. ## Discussion For example, the following code reverses the channel ordering of a pixel buffer: ```swift let buffer = vImage.PixelBuffer( pixelValues: [10, 20, 30], size: vImage.Size(width: 1, height: 1)) buffer.permuteChannels(to: (2, 1, 0), destination: buffer) // Prints "[30, 20, 10]". print(buffer.array) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)