SwiftUI Metal shader
Grain
A slow, breathing colour field: a 3x3 palette grid sampled through a time-warped cubic Hermite, finished with film grain. Four palette presets — Umbrellas, Sunset, Ocean, Forest — and all nine grid colours stay editable.
SwiftUIReact NativeWeb
How it works
Grain is a real [[stitchable]] Metal shader, not a video or an image. It runs as a SwiftUI .colorEffect, so it paints any view you attach it to. You shape it with sliders in a live preview, then export the .metal file and the SwiftUI code that uses it, or the React Native and Web version. No MSL to write.
14 settings you can tune
- Style
- Speed
- Flow
- Grain
- Brightness
- Top left
- Top center
- Top right
- Mid left
- Center
- Mid right
- Bottom left
- Bottom center
- Bottom right
