Webphysics Avbd Engine

This is a WebGPU physics engine implementing the AVBD (Augmented Vertex Block Descent) solver from a 2025 SIGGRAPH paper. It runs rigid body and soft body physics entirely on the GPU using compute shaders, with LBVH broad phase collision detection and graph coloring for parallel solves. Chrome only, experimental. You'd use this if you're building browser based physics sims and want GPU acceleration without WebAssembly or porting existing engines. The implementation is pretty complete with joints, springs, warm starting, and body sleeping, but expect to tune substeps and iterations heavily for stability. Good reference if you're exploring modern GPU physics techniques or need something lighter than full Bullet/PhysX ports.

skills.sh installs: 356
GitHub stars: 26
last updated: Jun 3, 2026

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Install

$ npx -y skills add aradotso/trending-skills --skill webphysics-avbd-engine --agent claude-code

Installs into .claude/skills of the current project.

Files

webphysics-avbd-engine

Skill by ara.so — Daily 2026 Skills collection.

What It Does

webphysics is an experimental WebGPU-accelerated rigid-body and soft-body physics engine implementing the AVBD (Augmented Vertex Block Descent) solver from Giles et al. (2025). It runs entirely on the GPU using WebGPU compute shaders and supports:

Rigid-body simulation with contacts, friction, and joints
GPU broad-phase collision detection via LBVH (Linear BVH)
Narrow-phase manifold generation with warm-start persistence
Graph-coloring-based parallel body solves
Springs and soft-body constraints
Body sleeping/diagnostics

Browser support: Chrome only (requires WebGPU). This is an experimental proof-of-concept, not a production library.

Installation & Setup

git clone https://github.com/jure/webphysics.git
cd webphysics
npm install
npm run dev        # development server
npm run build      # production build

The dev server typically starts at http://localhost:5173 (Vite-based).