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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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Getting rid of "sphere shading" in arnold rendered splines

5 REPLIES 5
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Message 1 of 6
ulrichGTAV3
276 Views, 5 Replies

Getting rid of "sphere shading" in arnold rendered splines

Hey all,

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

Screenshot_20230727100321.jpg

 This is the result:

snapshot001.jpg

 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.

5 REPLIES 5
Message 2 of 6
lee_griggs
in reply to: ulrichGTAV3

Increase the number of spline samples.

lee_griggs_0-1690461387591.png

 

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 6
ulrichGTAV3
in reply to: ulrichGTAV3

Unfortunately, that does not help.

Samples: "1000":

Screenshot_20230727165652.jpg

 Thx, though...

Message 4 of 6
ulrichGTAV3
in reply to: 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!

Message 5 of 6
peter_horvath
in reply to: ulrichGTAV3

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.


// Peter Horvath
// C4DtoA developer
Message 6 of 6
ulrichGTAV3
in reply to: ulrichGTAV3

Thanks for the insight.

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

Laters

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