The topic title might be misleading, sorry for that beforehand. So was following cg boost realistic nature tutorial. There is a car which I want to make it look older.
The two parts where I want to add grunge.
This is the front glass, I want to add some grudge on it.
I have the grudge texture from megascans, it has roughness and gloss texture.
How do I combine them together.
First off I think you grabbed a texture set that is aimed at opaque use not really for Glass which an alpha mask would be better. Yours should work fine for the wipers…and might work just plugging in as non-color into a PBR shader node in the appropriate slots, it really depends on what is included in the texture set you got.
There are a bunch of ways to add grunge…it will also depend on how you will render.
A node setup I might use for an alpha setup could be something like this (in Eevee )
this was with an alpha mask of shattered glass, and I included the glossy and transparent shaders…(stuck the plane behind the window so you could see the trans).
