A browser black-hole demo built with Gemini 3.6 Flash runs in three files at 60 FPS

prasenx · x · 2026-07-22

A creator says they built a black hole in the browser using Gemini 3.6 Flash.

The demo includes gravitational lensing, a Doppler-brightened accretion disk, an Einstein ring, a photon sphere, raymarched GLSL shaders, and audio that deepens as the viewer zooms in. It runs in three files, requires no build tools, and reportedly hits 60 FPS.

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