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Hi, maybe the title desnt explain my idea clearly... What Im trying to say is that when you want a material to have some roughness you apply UV values and the whole surface of the object changes.

If we could control UV roughness just like we control bumpmap, then we could create something similar to dust, finger prints on glass, etc...

Nothing is absolutely even in real life, not even roughness.

So the greyscale would determine the U value, black for 0 and white for 1.0... And another channel for the V value.

I know that some will argue that this can be done with some highdef bumpmap. But I differ, If this hasnt been already argued about, then I believe it is a great idea

Imagine a glass of water with the finger prints and the lipmarks on the edges.

Hope anyone likes this.

you can already do that, that's what the glossy slot is there for. mapping u and v separately is not possible though, i think tom once proposed it so who knows, maybe later.

So how come no one has posted a scene with fingerprints on a glass?

Ill try it...

Rivoli, I tried it several times with different materials... On glass, glossy doesnt appear. And in plastic the efect im talking about is not achieved...

Oscar, Tom you might want to think about this.

Currently, there is no texture support for roughness for the dielectrics. Only for plastic, and metal I think. So that's why no fingerprints on glass images

Wouldnt it be nice if there where?

n1tram wrote:Wouldnt it be nice if there where?

Yes, that would be nice indeed, as well as SSS on Dielectrics.

Kabe

Jej... With some nice bump map. Imagine scratches on a bumped car!