missing PBR (Physically Based Rendering) part

[SamShekhovtsov]

Hi,

First of all thaks for creating this amazing library. It really helps me to build things. Could you please exaplain why the Physically Based Rendering was removed as the previous versions of this library were handling that?

For example:

Material.PBR.HasTextureBaseColor
Material.PBR.HasTextureNormalCamera
Material.PBR.HasTextureMetalness
Material.PBR.TextureMetalness
//------
Material.IsPBRMaterial

and so on. Why those were removed? The library is not handling PBR any more?