Awesome
This repository contains two proposed glTF extensions. This repository will be kept up to date with another repository which contains these extensions suitable for merging into the Khronos glTF repository. In addition, this repository contains some additional samples. These samples will later be merged into the official Khronos samples repository.
KHR_implicit_shapes
Allows a document to specify primitive geometric types.
KHR_physics_rigid_bodies
Adds properties to nodes, enabling them to participate in a rigid body physics simulation. KHR_physics_rigid_bodies