Add surface.GetMaterial()

[A1steaksa]

It would be nice to be able to retrieve the currently active material from the surface library in the way we can already get things like the active color.

[A1steaksa]

I should also mention that there are other setters in the surface library that don't have corresponding getters.

[robotboy655]

Why?

[A1steaksa]

I want to make additions to the surface library that generate IMeshes, but without the ability to retrieve the settings of the surface library I can’t achieve the same “set once use multiple” functionality as the rest of the surface functions.

I want to have the same calling convention as the rest of the surface library for consistency’s sake