Topo Playground
Same shader as this background, with knobs.
The idea
[Sam: a configurable version of the topographic shader powering this site — sliders for noise scale, band count, line weight, peak-AA glow, etc. Maybe presets and a “share your config” URL hash.]
Inspiration
[Sam: write where the topo shader came from in your head]
Status
Sketching. Shader internals are stable from the site itself; just needs a UI panel and parameter exposure.