Hello,
When rendering PBR models there are lots of problems, objects are completely smooth and certain areas being metallic that shouldn't. Additionally tangents are incorrectly generated, below is a print screen of the results. You can see the panel on the top left is discoloured and some metal pieces are as well.
The shader code is here: https://pastebin.com/fsFq8BJJ https://pastebin.com/b0c6A7MV
Tangent generation is here: https://pastebin.com/TJa2Zz4f
Tangent formula is from Eric Lengyel: https://foundationsofgameenginedev.com/FGED2-sample.pdf
If anybody can spot what's causing this issue it would be greatly …