Chaos Corona for 3ds Max > [Max] I need help!

Black rectangles in saved images

(1/3) > >>

OleksandrV:
Hello!
After transfering to corona 11 we started noticing black rectangles in saved images, in frame buffer everything looks fine though.
It happens both in the VFB lightmix and multimap enviorment saved images, other render elements as zdepth or wirecolor are fine.
When rendering animation rectangle may apeare and stay on the same place for each next frame rendered, sometimes it can get bigger.
Also doesnt matter on the size of the output, it happens in 4k or fullhd.

After instaling hotfix this problem stopped apearing on some of the computers, some still have it, but it still constantly shows on the slower ones.

I have attached cutout from the recent render below
Is there any solution to this problem?

Avi:
It seems like you are getting a NAN issue. Do you get a NAN warning in the Corona log?

OleksandrV:
Indeed i see NaN error
Is there a way to fix it?

alexyork:
We've been getting something like this too - random black rectangles, but it's specifically only in the alpha channel of the rendered file (in our case EXRs), not the actual diffuse/beauty etc.

I'm not sure if this is the same thing as OP, but I can't check if there are NAN errors as this was on a bunch of frames rendered via Pulze RM. All I can say is that in a sequence of 500 frames there were 5 x "broken" EXRs with a rectangular (varying!) sized hole in the alpha, usually somewhere along the bottom right (but not always). When re-rendering them they were fine. This was across multiple machines, nothing machine-specific.

I can't send over any files due to NDA, sorry.

Avi:
We are aware of the "NaN" issue in Corona 11 Hotfix 1. We can currently offer the following options to tackle it:

If possible, downgrade to Corona 10 Hotfix 3 by downloading and installing it from https://corona-renderer.com/download/old and re-render your scene using this version. Unfortunately, this may not be a valid solution depending on what exact features you are using. Corona 11 features will not be rendered in Corona 10.

Install the newest Corona 12 daily build - https://forum.corona-renderer.com/index.php?topic=41598.0 - please make sure you save a backup of your scene before opening it in a daily build as it may be unstable and may even damage scene files! One possible workflow here would be creating your scene with Corona 11 and only rendering the final shots with a Corona 12 daily build.

We are also planning to release Corona 11 Hotfix 2 soon, which will include the NaN fix. Sorry for this inconvenience!

Navigation

[0] Message Index

[#] Next page