Set Shading Mode function. This is updated invert specular function. It has two modes: Lambert Shading / Fresnel Shading. This function switches your surface from Lambert to Fresnel shading. It's pretty useful when you setup painted refractive surface materials.

Added support for Glossiness texture. I updated Add Specular function. Now you can use tiled grayscale textures with surface Glossiness.Updated GI surface shading. Now it looks better and can be tweaked easily, via Metallic / Roughness / Glossiness sliders and textures.

Updated presets. Glossiness now supported in them. Also they can be easily tweaked without changing surface specular too much.

Normalized shading brightness and light direction. Surface
brightness and light direction for surface remains almost constant when
you use Metallic / Roughness / Glossiness sliders and textures.

Update 6f now available in this post: https://boosty.to/luffythefox/posts/7102d639-56cb-4500-b249-55465b7ef1a7?share=post_link

Thank you very much guys for supporting me. I hope you will like the new update. Enjoy ^_^.