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Additional bump with normal mapping.

Posted: Tue Sep 18, 2018 1:21 pm
by AlexWright
Hello, everyone!
This is my first post here. I've searched for this subject, but haven't found anything that helps, so I am going to open this thread, if it's been discussed before, please let me know.

Is there a way to add an additional bump to the normal map? I have a situation where I want to have a brushed metal engraved with some decorative shapes and I have a normal map for the brushed part and another, regular imagemap for the decorative shapes. Is it possible to combine the two bump maps? If one of them wasn't a normal map, I would just mix the two together, but in this case, I don't know.

Re: Additional bump with normal mapping.

Posted: Tue Sep 18, 2018 1:28 pm
by AlexWright
Actually, I found a solution myself. I don't know if it's the best one, but it works.
I've attached a screenshot of the annotated node setup. :D
The factor for the mix math node is set to 0.001 ;)

Re: Additional bump with normal mapping.

Posted: Tue Sep 18, 2018 10:22 pm
by B.Y.O.B.
You can just use a math node in "add" mode, it does all the required math behind the scenes.