how to reverse a bump map

Support Materials and Textures
1

I don’t know if its possible to reverse the effect of a bump map, other than reversing it in photoshop. I tried the ‘neg’ button in the textures menu, but to no avail, both in 2.37 and 2.42a

2

Click the NOR button in the MapTo tab twice so it’s yellow.

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3

thanks. more thanks (to lenghten it to more than 10 characters)

4

more on this. I’m trying surface displacement (activated the ‘dis’ button) with a bump map. Though the bump map is simple, i get a weird elevation more complex than what I have in mind. And setting the mesh to smooth + autosmooth simply makes the effect dissappear. Any insight on this?

5

I advise for displacement to turn nor all the way down and nor off and just have the displacement slider above 0. You’ll also need a heavily subdivided mesh to see it in good quality (just add a subsurf modifier and set it to simple subsurf)

6

nf3 - What you want is best achieved with a NOR map, imo. Displacement mapping needs super-dense mesh to look anything like the map.

I, too, often find myself wanting a negative of a particular texture or image…