feat(gray-scott): add reaction-diffusion demo

Add a Gray-Scott page with a shader ping-pong on float textures,
five presets and pointer painting.
Tick the Gray-Scott item in ROADMAP.md.
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lobo committed 2026-10-23 10:01:03 +02:00
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@@ -27,4 +27,4 @@ Open ideas for the playground frontend. Tick a box when done.
- [ ] Voronoi / Delaunay
- [x] A* vs Dijkstra side by side (reuse pathfinding)
- [x] Fourier epicycles
- [ ] Reaction-diffusion (Gray-Scott) shader (reuse the fractal shader setup)
- [x] Reaction-diffusion (Gray-Scott) shader (reuse the fractal shader setup)