Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Bug Reporting => [Max] Resolved Bugs => Topic started by: mtanasiewicz on 2015-08-20, 14:24:19

Title: Corona masking ID render element bug
Post by: mtanasiewicz on 2015-08-20, 14:24:19

Hello,

I have found a weird problem with Corona Masking ID. Everytime I render, I get something like there was an additional layer, which tinted about 2/3 of the image with another color. I marked the boundary of that tint with small red arrows. Any clue what's the cause? Or is it some bug? It actually causes problems with selecting tinted items in photoshop.

Cheers

Title: Re: Corona masking ID render element bug
Post by: mtanasiewicz on 2015-08-20, 14:30:03

update: another project also with "tint" - saved during rendering. This time only the bottom is tinted and it gets something like "bump texture". I noticed that the boundary is moving up constantly every several minutes. I think it changes after collecting data from distributed rendering.

Title: Re: Corona masking ID render element bug
Post by: maru on 2015-08-20, 14:40:43

Ok, thanks for mentioning it's distributed rendering. ;)
It looks like one/some slaves are doing something different than they should. Is this happening ONLY in the mask element, or also in the beauty pass or other?

Title: Re: Corona masking ID render element bug
Post by: mtanasiewicz on 2015-08-20, 14:48:00

I haven't noticed it in any other pass. But just as You asked  this question, the boundary got to the top of the image and vanished... so I'm not 100% sure :) Also I can't compare the older rendering, because actually I have re-renederd the masking ID pass later :D I'll check on it later when it happens again.

Title: Re: Corona masking ID render element bug
Post by: mtanasiewicz on 2015-08-20, 14:49:43

OK it is there again and only on masking ID pass. All other passes are clean

Title: Re: Corona masking ID render element bug
Post by: maru on 2015-08-20, 15:11:06

How much time and passes does it take before the boundary disappears? If it happens only in this pass, then it would be a bug. Can you check what happens if you change "max pixels to transfer" to much lower or much higher value in DR settings?
(jeśli chcesz możemy przejść na polski, żeby nie śmiecić na forum można by przejść na support ;) https://coronarenderer.freshdesk.com/support/tickets/new )

Title: Re: Corona masking ID render element bug
Post by: mtanasiewicz on 2015-08-20, 15:21:48

It took about 15-20 passes. I'll check tommorow if the max number pixels to transfer change anything, right now I have to finish this project :). But I don't think it is the cause. Otherwise it would affect other passess too? (Nie musimy chyba otwierać ticketu, w sumie wszystko już opisałem. Nic więcej nie wyczaruję:) fajnie, że Polacy pracują przy Coronie :D)

Title: Re: Corona masking ID render element bug
Post by: maru on 2015-08-20, 15:37:42

Ok, I was asking because sometimes it is normal that DR creates these "bands" and they disappear after a while. Another option is that it is caused by sync interval, you could try with a lower value.

Title: Re: Corona masking ID render element bug
Post by: Ondra on 2016-05-04, 18:08:49

We did some improvements on stability of the color assignment, so it should be fixed in 1.4 RCs