Fundamentals of Shading Course and Principled BSDF
I apologise if this has already been asked before, but I just wanted some clarification. I'm currently following the Fundamentals of Shading course, then it occurred to me that I had watched a video by Blender Guru last year about Principled BSDF, and I got a bit confused. Is the methods shown in the Fundamentals of Shading course the older way of the doing things, and Principled BSDF the newer way of doing things? If so do I need to learn this, and if not is there a course on the website for Principled BSDF? One last question, when you've used nodes to apply certain material effects such as Fresnel, etc - do these qualities get carried over when exporting them to other engines? Sorry. Very confused and would appreciate some explanation.