SwiftUI Metal shader

Soap Film

Thin-film interference on a bubble. A screen-space disc solves its own z to get a surface normal, two rounds of domain-warped fbm knead a thickness field across it, and a per-channel cosine of the optical path turns that thickness into colour. A mirrored copy of the field shades the back surface seen through the interior; the fringes brighten where the film folds and at grazing angles.

SwiftUIWeb

Open in the editor All effects

How it works

Soap Film 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 Web version. No MSL to write.