Because this addon will be merged with official Blender IO glTF addon, I will probably not merge this PR directly in this repo, because addon architecture will change in the newly created IO addon.
But your work will probably be a base for discussion about how to perform stuff on the new addon
pbr_node
can simplified the material code and can export glTF model with correct material.doubleSided
,alphaMode
support.y
,z
values need to be exchanged.