Per Stack Overflow (https://stackoverflow.com/q/52144252/1314762, https://stackoverflow.com/questions/51558365/how-to-load-gltf-scene-in-threejs-using-ie11), GLTFLoader is reportedly not working in IE11 even when the Promise polyfill is included. Our example pages do not include the polyfill at all, and therefore also do not work.
I think we should:
- Verify Promise polyfill is still the only thing needed to make GLTFLoader work in IE11
- If not, update either the loader or the docs.
- Add the promise polyfill to the existing glTF examples, with an
<!--[if IE]>block, if we want them to work in IE11.