Getting rid of "sphere shading" in arnold rendered splines

[ulrichGTAV3]

Hey all,

I try to render c4d-splines via the arnold tag an a standard_surface shader:

 This is the result:

 I'd like to stay on "thick" mode (it's supposed to act as sewing threads on some bags).

But: Can I somehow get rid of the shading artefacts on the spline?

Thank you very much,

Ulrich

PS: scene file in attachment.

[lee_griggs]

Increase the number of spline samples.

[ulrichGTAV3]

Unfortunately, that does not help.

Samples: "1000":

 Thx, though...

[ulrichGTAV3]

Just found a "workaround": Use CPU-Render instead of GPU-Render. Unfortunately that would increas my overall rendertime by more than 4x. If you have any other ideas, plz let me know!

Thanks!

[peter_horvath · Accepted solution]

Unfortunately it's a know issue of thick curves with GPU rendering, no other workaround than switching to CPU. It's on our roadmap to fix this, but no ETA at the moment.

[ulrichGTAV3]

Thanks for the insight.

Maybe this will be a job for the online renderfarm for now 😉

Laters