The water is a single @shopify/react-native-skia RuntimeEffect: an SkSL fragment shader (ported from a Shadertoy GLSL caustics shader) samples the pool photo through an ImageShader and displaces it with summed sine waves for refraction, adds additive caustic highlights, and paints the duck's elliptical shadow at the same displaced coordinate so it ripples with the tiles. A react-native-reanimated useClock SharedValue feeds useDerivedValue uniforms every frame on the UI thread, and the duck's buoyant wander/tilt is a sum-of-sines at unrelated frequencies so the path never visibly repeats. Tested on Expo SDK 56 with the new architecture (react-native-skia 2.6 + reanimated 4 + worklets); Skia is bundled in Expo Go as of SDK 56, so it needs no development build, and runs on both iOS and Android since all the heavy lifting stays on the GPU.
A full-screen pool water background with drifting caustics, refraction ripples, and a buoyant rubber duck whose shadow wobbles on the tiled floor below. The whole thing is built as a Skia runtime shader (SkSL) driven by Reanimated. Drop it into splash screens, onboarding, or empty states as a living background.
A collapsing scroll header with a price chart, matched to X's coin page: as the feed slides over it, the header shrinks from its top edge and fades. Pull down and it rides with the content to reveal an arrow, with opacity and drift curves sampled frame by frame from a screen recording. Drop it into a crypto, stock or token detail screen.
A React Native camera screen that opens out of the Dynamic Island, then prints each shot as an instant photo that develops on screen. Pull down and the island grows into a live VisionCamera lens; press the shutter and a Skia print feeds out of a slot and comes up over a minute, faster if you shake it. Drop it into a photo or journaling app as its capture screen.
A long-press share menu matched frame by frame to Telegram: hold the share button, slide across recent chats and let go to send. The chosen avatar arcs into a toast and turns into a checkmark, with an envelope-to-bookmark variant for Saved Messages. Drop it into a chat, feed or post list that needs one-gesture sharing.
