abyssal ocean
A free shader demo — play it in your browser, no install. Real-time spectral FFT ocean in a single HTML file — WebGL2 + three.js, JONSWAP/TMA spectrum, 3 cascades, physical foam, caustics and underwater. No build step.
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Controls: drag to look · W A S D / Z Q S D / arrows to move · Space / Ctrl: up / down
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Open the live demo Source on GitHubFrom the README
On a phone the parameter panel is a bottom sheet (side column in landscape). Tap hide to put it away; a tools chip brings it back. On-screen look / move / heave arrows drive the camera.
Everything on the panel is live: spectrum, foam, sun & sky, water optics, render. Four presets to start from — Tropical calm, Golden hour, Open storm, Glass morning.
FFT resolution can be forced with a query string: ?n=128, 256, 512 (default) or 1024.
Requires a browser with WebGL2 and EXT_color_buffer_float (Chrome, Edge, Firefox, Safari 15+, including iOS Safari).
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