# Garden

> Garden is a real-time WebGPU experiment by Luis Bizarro: a Japanese dry garden (karesansui) of raked white gravel and weathered, mossy stones in a timber courtyard, with a cloud pine, a red maple and clipped azalea domes, seen from the veranda corner. The pointer is a five-tine bamboo rake.

- Drag to rake: five tines carve parallel grooves that follow the stroke and rewrite what was there, right up to the stones.
- Press and hold still to smooth the gravel flat under the rake.
- Press a stone to lift it, move it and let go to set it down; a short click carries it until the next click.
- Move the pointer quickly without pressing to blow: maple leaves fall from an unseen tree, drift and settle, and the rake pushes them along.
- Scroll to change the time of day, from dawn to dusk.
- Clear (or `C`) smooths all the gravel flat, ready to rake from scratch.
- Three gardens: Ryōan (straight lines), Zuihō (waves, evening) and Tōfuku (whorls, morning). Keys 1–3 and the arrow keys switch.

Rendering: the gravel is a 2048 × 2048 heightfield over 6 × 6 metres, ray-marched every frame with grain-scale parallax from a CC0 gravel scan, lit by a low sun with soft shadows marched through the heightfield and the stones. The stones are CC0 photogrammetry scans from Poly Haven; the materials (gravel, moss, timber, plaster) are CC0 sets from ambientCG; the plants are built leaf by leaf. There is no sound.

Live at https://garden.bizar.ro/. More work at https://bizar.ro/.