# distortionEffect(_:maxSampleOffset:isEnabled:) Returns a new view that applies `shader` to `self` as a geometric distortion effect on the location of each pixel. ``` nonisolated func distortionEffect(_ shader: Shader, maxSampleOffset: CGSize, isEnabled: Bool = true) -> some View ``` ## Parameters `shader` The shader to apply as a distortion effect. `maxSampleOffset` The maximum distance in each axis between the returned source pixel position and the destination pixel position, for all source pixels. `isEnabled` Whether the effect is enabled or not. ## Return Value A new view that renders `self` with the shader applied as a distortion effect. ## Discussion For a shader function to act as a distortion effect it must have a function signature matching: ``` [[ stitchable ]] float2 name(float2 position, args...) ``` where `position` is the user-space coordinates of the destination pixel applied to the shader. `args...` should be compatible with the uniform arguments bound to `shader`. The function should return the user-space coordinates of the corresponding source pixel. > Important: Views backed by AppKit or UIKit views may not > render into the filtered layer. Instead, they log a warning > and display a placeholder image to highlight the error. --- 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)