I was wondering if the duplicate brush was able to sample something different than it's current layer.

For example may I create an empty layer above the image layer and sample from it. This way I may reverse my retouches just by erasing the contents of the layer.

does anyone know something about it?

No, duplicate always works inside the same layer.

You could use a clone layer with mask instead.

We could try to figure out a way to clone from another layer -- but it'll probably be a while before we have time to implement that!

slangkamp wrote:No, duplicate always works inside the same layer.

You could use a clone layer with mask instead.

Yes, currently that's the way to do it. Being able to clone only what you need is just a mater of sparing time. And to prevent from copying redundant information burdening the system's ram.

Maybe when the part on the multilevel texture painting for 3D comes up this topic may be discussed.

Feel free to noodle about requirements and so on in this thread.