GPU-Accelerated Cloth Simulation & Garment Dynamics via WebGPU Compute
Simulating textile drape, structural shear, and wind forces for millions of active cloth particles using parallel WGSL compute workgroups.
Simulating interactive clothing or fabric banners on the CPU limits mesh density to a few thousand vertices. Moving mass-spring and position-based dynamics (PBD) solvers to WebGPU compute pipelines allows simulating high-resolution garments at interactive frame rates.
1. Mass-Spring & Position-Based Dynamics (PBD)
Modeling structural, shear, and bending springs connects neighboring vertex particles. Position-based projection constraints correct distance violations iteratively without unstable velocity explosions.
2. Parallel Constraint Solving in WGSL Compute
Executing parallel constraint iterations across storage buffers requires ping-pong buffer writing and atomic synchronization to prevent race conditions during simultaneous edge updates.
3. Collision Response with 3D CAD Mannequins
Evaluating signed distance fields (SDF) or ray-mesh intersections against static body assets prevents cloth vertices from penetrating rigid CAD characters and furniture models.