# applyGamma(_:destination:) Applies a gamma function to a 32-bit pixel buffer. ``` func applyGamma(_ gamma: vImage.Gamma, destination: vImage.PixelBuffer) ``` ## Parameters `gamma` An enumeration that specifies either a used-defined or constant gamma. `destination` The destination pixel buffer. ## Discussion For example, the following code applies a gamma of `2.0` to a one-pixel pixel buffer: ```swift let buffer = vImage.PixelBuffer( pixelValues: [0.5], size: vImage.Size(width: 1, height: 1)) buffer.applyGamma(.fullPrecision(2), destination: buffer) // Prints "[0.25]" = [0.5²]. 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)