I recall asking for this in 2017. 
Time flies! 
I need ideally a full project. Sample for samplerCube usage and how it is setup in the material. So I need fp/vp/material minimum.
Here is a simplified cubemap example: cubemap_example.zip (4.7 MB)
It’s based on some quite old example that used to have a car in it with multiple parts and materials, sadly I don’t know what copyright the model and cubemap texture had so I threw that out and simplified it a bit… Hope it helps, should be able to get a grasp of the usage with it at least. 
And source of the cubemap textures: http://www.humus.name/index.php?page=Textures&start=8
8 Likes