Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Daily Builds => Topic started by: Ion on 2021-12-25, 17:36:21

Title: Corona Sky issue with reflections
Post by: Ion on 2021-12-25, 17:36:21

Using v8, when I turn off "Visible in reflections" the object is rendering white and this error message comes up:

 ===== Warning(-19) =====
An internal error has occurred causing your image to contain NaN (Not a Number) value.
Please report the bug with the scene attached. We can fix these problems promptly if we have the scene where it happens.

It seems to only occur with certain materials. Furthermore, clicking on "Create bug report ticket" does nothing.

Title: Re: Corona Sky issue with reflections
Post by: burnin on 2021-12-25, 18:07:22

HDRI Sky - Confirming an issue, but w/ overexposed result & NaNs Error.

W10, R25 w/ v8 daily (Dec-16-2021)

Title: Re: Corona Sky issue with reflections
Post by: Ion on 2021-12-25, 18:29:42

Quote from: burnin on 2021-12-25, 18:07:22

HDRI Sky - Confirming an issue, but w/ overexposed result & NaNs Error.

W10, R25 w/ v8 daily (Dec-16-2021)

Yes, overexposed is more like it. It's not just plain white.

Title: Re: Corona Sky issue with reflections
Post by: Stefan-L on 2021-12-26, 21:24:46

here also a NAN problem sadly,
also hdri (and sky) with different visibilities ( sun/sky/BG hdri / reflection hdri)

hope this can be fast fixed, otherwise 8 is great

Title: Re: Corona Sky issue with reflections
Post by: Stefan-L on 2021-12-27, 10:50:13

AYN news on this?

this sadly makes many of my scenes fail in latest v8 version

Title: Re: Corona Sky issue with reflections
Post by: Beanzvision on 2021-12-27, 12:39:59

Hmm, I am not able to reproduce this in V8. Would one of you be kind enough to record a short vid of this happening? Thanks in advance :)

Title: Re: Corona Sky issue with reflections
Post by: Stefan-L on 2021-12-27, 17:11:10

it renders with all objects totally blown out(white)
the usual Nan error message appears, , not sure what to record?

i have a sun, a sky, set to give gi, and a hdri in sky object that acts fro reflection/refraction and as BG,
the scene is big, but renders fine in r23 with corona 6

Title: Re: Corona Sky issue with reflections
Post by: mytrixx on 2021-12-27, 22:09:00

Quote from: Beanzvision on 2021-12-27, 12:39:59

Hmm, I am not able to reproduce this in V8. Would one of you be kind enough to record a short vid of this happening? Thanks in advance :)

Hello Beanzvision

Here is the scene in which this error occurs. https://1drv.ms/u/s!AtQc0dCHh4Jfj6tqvFP2qNOPQ23RdQ?e=EKgbax (https://1drv.ms/u/s!AtQc0dCHh4Jfj6tqvFP2qNOPQ23RdQ?e=EKgbax)
The problem disappears if you enable Visible in refractions on Corona Sky or reduce Roughness to 0 on material that has Refraction enabled.

Until version 7 Hotfix 2 everything is fine, since the first builds of 8 this problem appears.

(https://db3pap006files.storage.live.com/y4mKTgL-q9Q9LoaKmvdpHbwacawlFxLRYXALAvBpR7P2vI9PDIV88hlT7gJONmc9saxKXzMq5YECdqz65g71kFoZjzcA1NqOlRiJox4fu8SVQwdoaJ_CWDjRrApmNW2wrVf45MlcD8FN7lhOsh74JIeVMvZw1cyOaqJzfsPj0iWBfzaQB8A3ivd5v5GujbSPT0EhJwTthErtcTxniP8qlxGpw/2021-12-27_221139.png?psid=1&width=992&height=987)

Title: Re: Corona Sky issue with reflections
Post by: rojharris on 2021-12-28, 10:30:37

For me this seems to have been fixed in the latest build. It's been an issue since the start of V8 in most scenes but the 20th Dec build has fixed it.

Title: Re: Corona Sky issue with reflections
Post by: Beanzvision on 2021-12-28, 13:05:07

Thanks for sharing the file and to everyone's input. I see this scene also comes with ''warp-drive'' ;)

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35213.0;attach=158770;image)

Title: Re: Corona Sky issue with reflections
Post by: fabio81 on 2021-12-30, 16:28:06

Quote from: Stefan-L on 2021-12-27, 17:11:10

it renders with all objects totally blown out(white)
the usual Nan error message appears, , not sure what to record?

i have a sun, a sky, set to give gi, and a hdri in sky object that acts fro reflection/refraction and as BG,
the scene is big, but renders fine in r23 with corona 6

i also have the same problem

Title: Re: Corona Sky issue with reflections
Post by: archimen on 2022-01-03, 08:43:42

Hello,
I confirm it too.

Title: Re: Corona Sky issue with reflections
Post by: mmarcotic on 2022-01-03, 09:42:53

Hello,

we are working on this. As far as I know, the latest stable version (v7 hf2) does not produce this NaN, so that can definitely be used as a fallback

Thanks,
Jan