Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: lupaz on 2019-03-26, 18:46:11

Title: Higher noise level and render times with portals than without.
Post by: lupaz on 2019-03-26, 18:46:11

Hi.

Could anyone check this scene to see why I get a higher noise level and render times WITH portals than without please?

[Link removed]

Really appreciate it.

Title: Re: Higher noise level and render times with portals than without.
Post by: Frood on 2019-03-27, 13:51:07

Looked at it, intriguing. Have given up using portals a while ago, so I'm not entirely sure about what should be the result in current versions. But definitely not this :)


Good Luck

Title: Re: Higher noise level and render times with portals than without.
Post by: Philip kelly on 2019-03-27, 14:06:10

I rendered it last night , and it was very noisy.
The lighting has to be the issue, have reset the rendering setting to default and see if that helps.

Title: Re: Higher noise level and render times with portals than without.
Post by: lupaz on 2019-03-27, 14:44:20

I tried all sorts of things. Reset one of them.
Reset materials to grey.
Deleted all object that are on the way...
As far as I can see the portals are placed correctly. I re-did them a couple of times.
Nothing.

Tech support please?

Title: Re: Higher noise level and render times with portals than without.
Post by: lupaz on 2019-03-28, 13:58:06

Anyone from tech support?
BTW I’m working with Max 2016 and corona 3.1

Title: Re: Higher noise level and render times with portals than without.
Post by: romullus on 2019-03-28, 15:09:31

Portals aren't silver bullet. There are scenarios where they work great and there are, where they don't. If your scene renders faster without portals, then simply don't use them.

Title: Re: Higher noise level and render times with portals than without.
Post by: lupaz on 2019-03-28, 15:28:04

Hm.
Ok. Thanks.

Title: Re: Higher noise level and render times with portals than without.
Post by: Frood on 2019-03-29, 08:44:24

Romullus is right but this scenario is exactly what portals are made for imho. And there is no difference using sun&sky or some hdri in this (simple) scene - always worse with portals.


Good Luck

Title: Re: Higher noise level and render times with portals than without.
Post by: TomG on 2019-03-29, 13:44:29

The link to the scene has disappeared - if it might be a bug, and Frood suggests it might be from when he tested it so it may not be a "I Need Help" issue any more, best thing is to open a ticket and upload the scene via our private uploader: https://coronarenderer.freshdesk.com/support/solutions/articles/5000524006-how-to-report-issues-3ds-max

Title: Re: Higher noise level and render times with portals than without.
Post by: lupaz on 2019-03-29, 15:04:23

Ok. Thanks Tom. I will.