This repository showcases an impressive array of cutting-edge rendering techniques—clipmap terrain, procedural snow shading, additive terrain deformation, IK-based procedural character, particle-free wake, and a complete post-processing chain—all in real-time on WebGPU with no external assets.
A real-time snow rendering tech demo. WebGPU, Babylon.js, hand-written WGSL. Everything you see is generated on the GPU at load time — there are no textures, no meshes, no HDRIs and no animation data in this repository.
Requires a WebGPU-capable desktop browser (Chrome/Edge 113+, Firefox 141+, Safari 26+) and a discrete or recent integrated GPU. There is no WebGL fallback by design — if
navigator.gpuis missing the page says so and stops.
| Click | capture the pointer |
W A S D | move, relative to the camera |
| Mouse | look · Wheel zoom |
Shift | sprint |
| Right mouse (hold) | snow-surf — carve across the field and throw a wake |
1 – 5 | the five spells (2 is a held cast) |
F1 or ` | settings and performance overlay |
The overlay exposes every art parameter as a live slider — sun angle, wind bearing, subsurface radius, deformation depth, tonemap curve, exposure — plus a frame-time graph with median / 95th / 1% low, draw calls, triangles and a per-system CPU breakdown. Every system can be toggled off individually, and there are debug views for normals, depth, cascade coverage, the deformation buffer and the raw shadow map.
A nested-ring geometry clipmap: 8 rings, 8.5 cm inner spacing, ~870 m radius,
333k triangles — one static mesh, one draw call. Vertices carry only
(gridIndex, ringLevel); world placement, CDLOD morphing and displacement all
happen in the vertex shader, so there is no CPU rebuild and no per-frame upload.
The heightfield underneath it is layered gradient noise with analytic derivatives, anisotropic about a single prevailing wind: broad transverse dune ridges, a long low swell, medium drifts sheared along the wind for lee-face asymmetry, and sparse rock outcrops. It bakes once into a 4096² RG32F texture and is mirrored back to the CPU, so character grounding samples exactly the surface that is drawn rather than a re-implementation of it.
Multi-scale normals — baked macro slope, analytic sastrugi and ripples, three tiled detail scales, triplanar on steep faces — over wrapped diffuse, a back-scatter subsurface term with depth-dependent blue tint, GGX specular, SH ambient with a solved snow bounce, and procedural view-
A real-time procedural snow rendering demo built with WebGPU, Babylon.js and hand-written WGSL. Features GPU-generated terrain, snow deformation, procedural characters, cloth, surf wakes, water spells, atmosphere and post-processing—without textures, meshes, HDRIs or animation assets.
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