Needle Engine Documentation
Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development, and can be deployed anywhere. It is flexible, extensible, and collaboration and XR come naturally. Needle Exporter for Unity bridges the Unity Editor and the web runtime. It helps you to export your assets, animations, lightmaps and so on to the web. It is built around the glTF standard for 3D assets.
https://engine.needle.tools/docs/features-overview.html#shaders-and-materials