Rendering artifacts

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Newtek Lightwave 3D (exporter developed by holocube, Integrated Plugin developed by juanjgon)

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Re: Rendering artifacts

Postby pixym » Tue Jun 29, 2021 2:43 pm

pixym Tue Jun 29, 2021 2:43 pm
Hi,
Have you tried to change the ray epsilon value ?
Work Station : MB ASUS X299-Pro/SE - Intel i9 7980XE (2,6ghz 18 cores / 36 threads) - 32GB - 2 GTX 1080 TI - Win 10 64
NET RENDER : MB Biostar TB250-BTC Pro - Celeron 2C/2T - Open "Mining" Rig - 2 RTX 2080 TI - Win 7
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Re: Rendering artifacts

Postby tomas.base » Fri Aug 20, 2021 2:13 pm

tomas.base Fri Aug 20, 2021 2:13 pm
I would especially recommend quality geometry / meshflow. Much depends on the triangulation and order of the vertices. If the input geometry has 4 verticles / poly and good meshflow for proper automatic triangulation in the OCTANE core (vertex order), then very small bump and normal values are not a problem (+ higher SUB-DIV level). If the geometry is not good, smoothing will stop working on the reflections.

I attach two identical objects, one is triangulated in LW and the other is not.

After automatic triangulation (see oct pass wirefrane) they look almost the same at first glance, the difference is huge.

In some cases, it is better to do triangulation (if the model is not suitable for SUB-DIV) in LW. Sometimes the automatic triangulation of the Octane core is worse on more complex LOW-poly objects and it is better to triangulate in advance in LW. It's individual. The OCT and LW algorithm is different. And a lot depends on the order of the vertices.

Tomas
Attachments
ipr.jpg
IPR
wireframe.jpg
octane wireframe pass
model.jpg
source model
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Re: Rendering artifacts

Postby pixym » Fri Aug 20, 2021 2:16 pm

pixym Fri Aug 20, 2021 2:16 pm
Hi, thanks for this information.
Work Station : MB ASUS X299-Pro/SE - Intel i9 7980XE (2,6ghz 18 cores / 36 threads) - 32GB - 2 GTX 1080 TI - Win 10 64
NET RENDER : MB Biostar TB250-BTC Pro - Celeron 2C/2T - Open "Mining" Rig - 2 RTX 2080 TI - Win 7
pixym
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