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So, I recreated this tutorial but animated the tentacles.

enter image description here It works nicely, but the textures are moving around during animation because there are no UV maps. I tried Capture Attributes of the curves with Combine XYZ and the attribute node in the shader but the UVs or textures are all messed up (just long lines and weird patterns). I found another tip on this site that uses Transfer Attributes of geometry but this also didn't work. Here's a little test scene of my setup Is there a way to get nice bump maps that stick to the moving tentacles? :)

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This doesn't really have anything to do with your Geometry nodes setup, it's all to do with your materials.

Right now you don't have a mapping node setup and the noise that's driving the bump is using Generated UV coordinates.

enter image description here

In any case however, There's not gonna be any good way to add a bump map to these tentacles procedurally without converting them into meshes and uv unwrapping them. Every other option is gonna have some downside (stretching, not moving etc.)

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  • $\begingroup$ Thank you, I deleted the mapping because it doesn't make a difference. Too bad it isn't working within geometry nodes... $\endgroup$
    – Voltago
    May 3, 2022 at 17:17
  • $\begingroup$ That's just the nature of procedural geometry, you can use it get infinite variation but once you need it to be something production ready, you'll need to Realize Instances and Convert to Mesh to actually UV Unwrap the ones you like. $\endgroup$
    – Jakemoyo
    May 4, 2022 at 11:00

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