icosa-foundation/open-brush — reverse-engineered prompt

Build me a free VR painting app like the open source evolution of Tilt Brush, called Open Brush. I want people to put on a headset and paint in 3D space all around them, using brushes and effects to make artwork they can walk around and view from any angle.

Please make it work in Unity for modern XR headsets, especially Quest and PC VR, and also let it run in the editor without a headset using keyboard or gamepad controls for testing. Include the main scene, controller input, brush drawing, saving and loading sketches, and a simple way to build releases for the supported platforms.

Keep it community friendly and free forever in spirit. Don’t use the Tilt Brush name or branding except where legally required. If you need exact Unity XR setup details, look up the current Open Brush docs online and follow the build notes closely.