💡 Overview

ZOZO’s Contact Solver is a GPU-accelerated contact simulation engine developed by ZOZO, Inc. The Blender 5.0+ add-on documented here is one front-end that ships with the engine: you model the scene in Blender, assign material groups and pins, and the add-on runs the solve – on a remote host, or on the machine Blender runs on – and fetches the animation back.

The engine runs on NVIDIA GPUs through CUDA, on AMD GPUs through ROCm, on Apple silicon through Metal, and on any CPU through a portable SIMD build. Which of those a run uses is a per-connection choice; see Choosing the build.

If you are new, start with Getting Started. If you want to wire up a specific backend, jump to Connections. If you already have a connection and want to drive the solver day-to-day, go to Workflow. For example clips, see the Gallery.