Curvature Precision Issue

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rfrassek
Posts: 1
Joined: Wed Mar 19, 2025 9:45 am

Hi everybody,

I'm having an issue with the Curvature Texture node. It seems like it has precision issues. I modeled a 1:1 scale hypodermic needle model. It's very tiny, about 0.8mm in outer and 0.5mm in inner diameter. When I apply a Curvature Texture node and set the radius to 0.001 this is how it looks:

Image
  • If I go ANY amount below 0.001 radius, the effect disappears entirely
  • Reducing Ray Epsilon does nothing
  • Dirt Texture seems not to be affected by this, but it does not give me the effect that I want so it's not an option as far as I can tell
  • Scaling the object up by 10x does help, but I would prefer to keep this to real life scale for obvious reasons
Is this just an Octane limitation or am I missing something?

Thank you!
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bepeg4d
Octane Guru
Posts: 10266
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Hi,

which OctaneRender version are you using exactly?

And are you using Standalone or an integrated plugin?

ciao,
Beppe
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