Verlet cloth — wind and mouse drag
Position-based dynamics on a 128 × 128 grid: Verlet integration, then colour-partitioned relaxation of structural, shear and bend constraints so no pass writes a vertex twice. Normals are recomputed on the GPU.
Reduced motion is on — showing the poster instead of the live scene.
128 × 128 vertices on TSL compute. Drag the cloth to grab a vertex.