Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Bump Map with Gimp 2.10.8
#2
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...).
Reply


Messages In This Thread
Bump Map with Gimp 2.10.8 - by epsilon85 - 11-19-2018, 03:14 PM
RE: Bump Map with Gimp 2.10.8 - by Ofnuts - 11-19-2018, 04:01 PM
RE: Bump Map with Gimp 2.10.8 - by rich2005 - 11-19-2018, 05:20 PM
RE: Bump Map with Gimp 2.10.8 - by epsilon85 - 11-20-2018, 11:16 AM

Forum Jump: