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Tutorial: How to correctly setup bump maps in Cycles


ZanQdo at posted a quick tutorial showing the steps to properly setup a material utilizing bump mapping and how to adjust the strength of this effect through utilizing the math node.



  1. ok never really work with cycle before
    so wondering is there a sample file for this example

    how does the bump map is made for this ?

    or downloaded from somewhere else ?

    happy 2.5

  2. This is really displacement mapping, not bump mapping. It modifies the geometry, as you can clearly see on the right side of the dimpled object.

    The question is: do you need pre-existing geometry, or is this at a per-pixel level?

  3. Could that be extended to normal-maps by splitting the rgb-channels and putting three "normal"-nodes in between, rotated to be orthogonal to each other?

  4. one suggestion here

    open up a new thread in blenderartist where people can load up sample files
    using cycle with different material and texture ect

    so people can download and see how to do the effects with nodes using cycle

    it looks like thre is a lot fo differences between BLI and cycle

    so it would take some times to get use to it !

    happy 2.6

  5. Hey! I did that first!

    Actually, I like finding things out myself...because you will inevitably find out other awesome things along the way. But anyway, I was using cycles a little while ago, and after about a day of working with it ('working' being me clicking random buttons) I figured out that method for controlling bump mapping. Nevertheless, technically speaking, it was 'right under my nose' all along. Anyone with even the most basic mathematics knowledge knows that multiplying any value by a number between 1.000 and .000 will output a smaller percentage of itself. Hooray for mathematical accuracy in blender!

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