Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: speedeshrimp911 on 2019-06-30, 05:28:02

Title: Bloom and Glare causes scene to turn black
Post by: speedeshrimp911 on 2019-06-30, 05:28:02

Howdy,

Whenever my scene gets past ~220 passes, it turns black when Bloom & Glare is applied. If it turn it off, the scene immediately comes back, but I need the results of Bloom & Glare. Since this consistently happens, it also seems like a pretty big problem.

Let me know if there's anything I can do to fix this!

-Hayden

Title: Re: Bloom and Glare causes scene to turn black
Post by: rowmanns on 2019-07-01, 09:23:51

Hi,

Which version of Corona and Max are you using?

Thanks,

Rowan

Title: Re: Bloom and Glare causes scene to turn black
Post by: speedeshrimp911 on 2019-07-02, 00:07:34

I'm using Cinema4D.

Version: 3 hotfix 1 (core 3)
Cinema version: CINEMA 4D Studio R20

Title: Re: Bloom and Glare causes scene to turn black
Post by: houska on 2019-07-02, 13:05:41

Hi speedeshrimp911!

It seems like you have NaNs in your scene. NaNs are issues in the light transport calculation that manifest as black dots and they have the unpleasant property that any calculation with them propagates with further calculations. This means that when you apply the bloom and glare to an image, which contains a NaN, it will be spread over the whole area of the image. You can check for NaNs yourself by right-clicking in the Corona VFB.

However, it is possible that your issue is already fixed. To check, please update to Corona 4

Title: Re: Bloom and Glare causes scene to turn black
Post by: speedeshrimp911 on 2019-07-02, 22:15:49

I was hoping that would've fixed the issue, but it did not. Checked in at 100 passes to see a black scene ripe with NaN pixels.

To clarify, my Corona version is: Version: 4.0 (core 4)

Any help would be appreciated.

Title: Re: Bloom and Glare causes scene to turn black
Post by: houska on 2019-07-03, 11:18:38

Ok, in that case it's something that we'd like to fix. Would you be able to pinpoint down what's causing those NaNs? The simplest would be if you uploaded your scene to us via the private uploader (link is in my signature below) and we would check that out ourselves. If that's not possible for any reason, you can try simplifying the scene by deleting objects and then sending the smallest subset of the scene possible, where the issue still appears. Of course, we will consider your scene confidential in any case.