Microsoft Mixed Reality Extension SDK with glTF support

The Microsoft Mixed Reality Extension SDK is an open source project under the MIT license which lets developers and community members extend the AltspaceVR host app's worlds with multi-user games and other dynamic experiences. Among many other things, the SDK enables you to create extensions that can modify the scene graph by loading glTF assets and scene files, instantiating primitives or the host app's built-in assets, or programmatically build meshes.