Snow System (Three.js)

A realistic, fully procedural snow studio — the winter counterpart to the Rain System. Reuses the same asphalt PBR textures, cinematic lighting rig, and post-processing stack, with snowfall and ground-accumulation replacing the rain and puddles.

What's inside

• GPU-instanced snowfall (src/snow.js) — soft round flakes that fall slowly and meander with a per-flake figure-eight flutter, drifting on the wind. The field wraps around the camera so it's effectively infinite.
• Snow accumulation shader (src/main.js) — an FBM noise mask in world space decides where snow has settled on the asphalt. Inside the blanket the albedo lifts to a cool snow-white, roughness goes matte, the surface gains soft drift bumps, and scattered ice-crystal sparkles twinkle in the light.
• Same cinematic rig — identical key/fill/rim/ambient lighting, IBL, and the Bokeh DoF -> Bloom -> film-grade post stack (src/postfx.js).
• lil-gui controls for material, snow-on-ground, snowfall, wind, lighting, and the cinematic camera/DoF/effects.

Model import is intentionally left out to keep this build simple.

Run

npm install
npm run dev

Drag to orbit, scroll to zoom.