Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: peterguthrie on 2016-03-30, 17:53:12

Title: animtated HDR rotation flickering
Post by: peterguthrie on 2016-03-30, 17:53:12

just in case anyone here has had similar problems I thought I would ask here.

we would like to animate the rotation of a hdr sky, to make a sort of timelapse effect, but we get a lot of flickering which looks like the overall light intensity is changing.

when we remove the keyframes from the hdr sky then the flickering is gone.

any ideas?

I have tried PT + PT (still problematic) and the next thing i will try is switching to a corona sun

Title: Re: animtated HDR rotation flickering
Post by: maru on 2016-03-30, 18:11:52

How are you loading and animating the HDRI?

Title: Re: animtated HDR rotation flickering
Post by: peterguthrie on 2016-03-30, 18:46:27

initially vrayHDRi but then tried corona bitmap loader with offset animated.

now have painted out the sun from my HDR and used a corona sun instead, which fixes the problem (i think!)

Title: Re: animtated HDR rotation flickering
Post by: maru on 2016-03-31, 12:41:20

I just rendered out 2 320x240 animations with 10 passes, 100 frames, full 360 HDRI rotation with 2 different HDRIs and I do not see any flickering or exposure changes. Do you have any strongly reflective/refractive objects in the scene?

Title: Re: animtated HDR rotation flickering
Post by: peterguthrie on 2016-03-31, 12:48:13

i can send you a video on PM to show the problem. Happened with an override material on as well, all fixed with corona sun

Title: Re: animtated HDR rotation flickering
Post by: maru on 2016-03-31, 13:00:28

Sure, you can send it over forum pm or to our support at https://coronarenderer.freshdesk.com/support/tickets/new

Title: Re: animtated HDR rotation flickering
Post by: Imagine Studio on 2020-09-02, 14:46:27

Hello,

I'm trying to render interior animation with animated HDRI (pg skies - 1444), but a problem appears, same as Peter Guthrie described.

The HDRI is loaded as CoronaBitmap in the enviro slot. We have searched for a solution through the corona forum, but nothing helped us.

Thanks in advance,
Best Regards,
Dilyan

Title: Re: animtated HDR rotation flickering
Post by: rowmanns on 2020-09-02, 14:47:51

Quote from: Imagine Studio on 2020-09-02, 14:46:27

Hello,

I'm trying to render interior animation with animated HDRI (pg skies - 1444), but a problem appears, same as Peter Guthrie described.

The HDRI is loaded as CoronaBitmap in the enviro slot. We have searched for a solution through the corona forum, but nothing helped us.

Thanks in advance,
Best Regards,
Dilyan

Hi,

Would you be able to send over your scene archive please and we will investigate.

Thanks,

Rowan

Title: Re: animtated HDR rotation flickering
Post by: Imagine Studio on 2020-09-02, 16:16:07

Hi,

Scene archive send via PM.

update: latest test with corona sun seems to be rendring fine. Here the sun is animated instead of the HDRI.

thanks,

Dilyan

Title: Re: animtated HDR rotation flickering
Post by: rowmanns on 2020-09-02, 17:07:04

Quote from: Imagine Studio on 2020-09-02, 16:16:07

Hi,

Scene archive send via PM.

update: latest test with corona sun seems to be rendring fine. Here the sun is animated instead of the HDRI.

thanks,

Dilyan

Hi,

Thank you for sending the scene. We will investigate.

Rowan

(Internal ID=559254724)

Title: Re: animtated HDR rotation flickering
Post by: Imagine Studio on 2020-09-02, 18:16:20

thank you! sorry for the dummy question maybe, but what i should do with this number ?

Dilyan

Title: Re: animtated HDR rotation flickering
Post by: TomG on 2020-09-02, 18:37:53

Nothing - that's a number so we can find your ticket internally :)