Daily Builds 1.0 - 1.4

[ihabkal]

is there a way to have the denoise filter on the channels?

I second that :)

[sevecek]

is there a way to have the denoise filter on the channels?

I second that :)

Unfortunately no, the denoiser currently works only on beauty and alpha.

[PROH]

Hi. Really like these new great features. The "VFB-MSI" solves problems that couldn't be solved before, and adaptive + denoiser speeds things up a lot. But in my testings I've encountered a few problems/bugs/issues:

1 - There is a problem with the denoiser when objects are behind glass. I've attached an example, where it was necessary to hide the glass to avoid the denoiser "destroying" the render. 60 passes, denoise rad.: 0,5, render size (whole pic.): 1280x960.

2 - When using region render after a full render, the denoise "layer" is not cleared even when "Clear VFB" is checked (both). The result is that the blend function blends between Black and "old denoise layer" outside the region. I've attached an example where blend is set to 0,1 to illustrate.

Keep it comming :)

[antanas]

Yeah I'm getting the same issues with glass and water or any semitransparent or transparent materials with denoiser but I highly doubt it is fixable or changeable until or more precisely if some sort of per pass\element noise filtering will or can be done for that process or maybe even some sort denoiser masking driven by some sort of ignore by denoiser material flag should be made to better avoid such things in such cases, yet I'm even less sure if that is possible too.
Here's some examples of that behavior with various noise blending amounts - notice the ugly blur on top of underwater parts with full denoising, yet 0.5 blending looks quite acceptable in this case I think.

[sevecek]

1 - There is a problem with the denoiser when objects are behind glass. I've attached an example, where it was necessary to hide the glass to avoid the denoiser "destroying" the render. 60 passes, denoise rad.: 0,5, render size (whole pic.): 1280x960.

Hi PROH,
could you please provide some testing scene that would demonstrate problem #1? I've already encountered this kind of problem, but the blur wasn't nearly as strong as in your case, I'll see what I can do to fix it.

[antanas]

1 - There is a problem with the denoiser when objects are behind glass. I've attached an example, where it was necessary to hide the glass to avoid the denoiser "destroying" the render. 60 passes, denoise rad.: 0,5, render size (whole pic.): 1280x960.

Hi PROH,
could you please provide some testing scene that would demonstrate problem #1? I've already encountered this kind of problem, but the blur wasn't nearly as strong as in your case, I'll see what I can do to fix it.

I can )) here's the scene itself done in max 2016 and the needed maps are those https://www.artstation.com/artwork/ePe66 glorious freebies from RDTextures + any forest hdr map which you can find - in this case I used Aversis's monthly freebie 022-bos-schaduw.hdr - hopefully no nonredistributable content this time ))

[Noah45]

https://forum.corona-renderer.com/index.php/topic,11251.0.html

Noise behind glass. Animation makes that problem more noticeable.

[sevecek]

I can )) here's the scene itself done in max 2016 and the needed maps are those https://www.artstation.com/artwork/ePe66 glorious freebies from RDTextures + any forest hdr map which you can find - in this case I used Aversis's monthly freebie 022-bos-schaduw.hdr - hopefully no nonredistributable content this time ))

Thank you for the scene! The problem is that the denoiser can't "see" under surfaces with glossiness < 1. Setting glossiness to 1 yields much better results, see attached images. I think this can be fixed, though :)

[antanas]

Well that' good to know for sure, and of course it will be even better if it can be fixed which would be invaluable for scenarios where some more sophisticated transparent materials are involved - like some glass\water with variable mapped glossiness or some dirt etc.

[Nekrobul]

Guys what VFB clamping stands for? Is it about this antialasing problem?

[Ondra]

yes. It can also speed up rendering. It creates bias (which can be anywhere from invisible to huge). It is Vray's "subpixel mapping" with more fine-grained control.

[PROH]

The problem is that the denoiser can't "see" under surfaces with glossiness < 1.

I can confirm this. BUT this is not the only thing causing ultra-blur, since my glass did have refraction (and reflection) glossiness set to 1. So after more testing I found out that "Thin" is the second cause.

So set refraction glossiness to 1, uncheck "Thin" and set refraction to 1 - and pray that you wont run into troubles with your lights.....

Hope this be fixed/worked out :)

BTW - Did anybody else experience the region-problem (described in my earlier post)with denoiser?

[Nekrobul]

yes. It can also speed up rendering. It creates bias (which can be anywhere from invisible to huge). It is Vray's "subpixel mapping" with more fine-grained control.

Hm that is interesting. I remember subpixel maping was cutting somwhere around 20-50% of rendertime in vray. Got to test it out as soon as i will get home

[Ondra]

we know about the region problem, it will be fixed soon

[selant]

yes. It can also speed up rendering. It creates bias (which can be anywhere from invisible to huge). It is Vray's "subpixel mapping" with more fine-grained control.

there was a checkbox for "subpixel map." in vray if i'm not wrong, but here we must provide a value ? What is the criteria to define the value. 1,0 means %100 ?