Bump Map with Gimp 2.10.8 - Printable Version

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Bump Map with Gimp 2.10.8 - epsilon85 - 11-19-2018

I do have a problem with this function (Bump map), In fact nothing happen when I follow the tutorial here under.
I do not have the same window appearing when I clic on Bump map.
What should I Do ?
Thank for your help.

RE: Bump Map with Gimp 2.10.8 - Ofnuts - 11-19-2018

The tutorial is for Gimp 2.8 and you are on 2.10. Lots of change in the tools.

Bump mapping is not that hard to understand even without a video: you just need:
  • The layer that will be the target (the one to which you add bumps and dimples)
  • The "bump map" layer. It works like a "relative altitude" map. In the usual case:
    • What is gray 50% RGB(127,127,127) on the map remains at the initial level in the target image,
    • Darker areas correspond to lower altitudes (dimples)
    • Lighter areas to higher altitudes (bumps).
    • If you have sharp level transitions, you get the equivalent of cliffs, while progressive blends create slow slopes.
  • IIRC Gimp requires the two layers to have the same size.
Everything else is just how the light simulates the relief. Since the bump-mapping creates shadows and lights, it works best on layers with an average luminosity (difficult to create shadows over pitch black...).

RE: Bump Map with Gimp 2.10.8 - rich2005 - 11-19-2018

Bumpmapping with Gimp 2.10 is easier than with Gimp 2.8 The effect shows on the canvas instead of a small preview.

A face on a cliff? might be something like this

[Image: 4coxYut.jpg]

A 3' 30" video demo

Espermaschine also put some tips up for text see:

RE: Bump Map with Gimp 2.10.8 - epsilon85 - 11-20-2018

Thank you both of you for reply and exemples.