Denoising and Transparent Material Issue

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Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

Currently I seem to be running into an issue with the denoiser. It seems to have some rather lack luster performance on Glass and like materials. Is this a known issue?

See below for examples of a undenoised and denoised set of glass panes. Notice how blochy and odd the glass looks even with relatively similar noise.
MainRender_Glass.PNG
Denoiser_Glass.PNG
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Intel Core i7 CPU 6850K @ 3.60GHz 128.0 GB Ram / Win 10 64 bit / 1x GeForce RTX 3080
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bepeg4d
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Hi,
try to increase the sampling until the blochy effect is gone.
ciao Beppe
Zay
Licensed Customer
Posts: 1123
Joined: Sun Jan 17, 2010 2:53 am

Yes, I see the same thing with transparent objects. Windows and the likes. This is real hard for the denoiser. I usually use area render on those difficult areas first.
Win 11 Pro | i5 12600K | 32GB ram | 2x GTX 1080Ti + 3080Ti - studio driver 560.94| Modo/Blender/ZBrush/Daz/Poser
Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

@bepeg4d

I did in fact try that but it still remained, in fact it almost looked like the longer the samples went, the less the denoiser would work on the glass.

Do we know why the denoiser doesn't work well on these surfaces?
Intel Core i7 CPU 6850K @ 3.60GHz 128.0 GB Ram / Win 10 64 bit / 1x GeForce RTX 3080
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