BSDF] Specular Tint only has one channel? - Materials and Textures - Blender Artists Community
BSDF Principled — Blender Manual
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Import & Export of Node Shaders — Blender Manual
glTF 2.0 — Blender Manual
The Principled BSDF Shader in Blender | Brandon's Drawings
Is it possible to get specular color in cycles? principled doesn't accept color in the specular input and specular bsdf renders as black in cycles. : r/blender