I got a problem using glTF exporter for Blender (To upload 3D content on Facebook). I downloaded the last version of the add-on on this site: https://github.com/KhronosGroup/glTF-Blender-Exporter
The problem is that there is only 2 node groups for Cycle rendering, glTF Metal and glTF Specular, but there's no glTF Diffuse node group for instance, and using the normal shader node provided by Blender don't work while exporting.
So I was wondering how to get this node group, or if I have to create it, maybe I miss something, I don't know.
Thanks for reading ! (PS: I got the last Blender Version and I followed the Khronos Group tutorial, I found nothing)