Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Lino Pontes Donnamaria on 2017-02-01, 17:56:53

Title: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-01, 17:56:53: Hi guys!
I have a problem with my animation.
I am using pass limit 18, but the result are not good.
I did increase the pass limit to 25, but don't work
I did an animation with pass limit 10 and the result was very good.
Can you help me?
See the video atached.
Thanks a lot!
Title: Re: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-01, 20:17:04: Why this flickering?
How can I solve this?

Thanks
Title: Re: Animation problem
Post by: Daskydesign on 2017-02-01, 20:22:05: I think the flickering is caused by the animated texture of the screen. Is that a selfilluminated material?
Have you tried to render it without that?
Title: Re: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-01, 20:26:12: Hi!

It was sefilluminated. I turned of, but don't solved this problem yet.
Title: Re: Animation problem
Post by: Daskydesign on 2017-02-01, 20:50:40: mmmh did you use the light portal for the window?
https://coronarenderer.freshdesk.com/support/solutions/articles/5000501660-how-to-use-light-portals-in-corona-
Title: Re: Animation problem
Post by: cecofuli on 2017-02-01, 21:38:41: 18 or 25 passes for this scene are too low! =)
And, don't use Passes, but Noise Level.
For a reasonable quality, NL should be >4%
Title: Re: Animation problem
Post by: zdragas on 2017-02-02, 00:52:43: Did you precalculate UHD Cache?
Title: Re: Animation problem
Post by: maru on 2017-02-02, 17:28:50: First of all, I don't understand the description:

Quote
I am using pass limit 18, but the result are not good.
I did increase the pass limit to 25, but don't work
I did an animation with pass limit 10 and the result was very good.

Another things:
-denoising is not magical - it will try to denoise the image, but if there is too much noise initially, there will always be flickering and smudging visible
-10, 19, or 25 passes is most probably not enough, please see: https://coronarenderer.freshdesk.com/support/solutions/articles/5000518064
-if there are no moving lights or objects in your scene, you should bake your UHD Cache and reuse it for all frames: https://coronarenderer.freshdesk.com/support/solutions/articles/5000515648
Title: Re: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-03, 10:41:57: Hi guys!
Thanks for your answers and comments!
Now I answers your questions...
Yes, I am using portal for window.
I am using Denoise A= 1 and Denoise R=0,6. This setup did work very well in others projetcs. I believe now that 18 - 25 pass is no enough for this case.
Yes, I did precalculate UHD Cache.
An image attached show my setups.

Thanks my friends!
Title: Re: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-03, 10:48:38: Hi guys!
I am using UHD Cache preset animation on. In this image don"t show this.
Title: Re: Animation problem
Post by: SHORT CUTS on 2017-02-03, 11:45:09: Try setting the uhd cache preset to animation (flicker-free). right now i am also doing my first animation with corona and i overlooked that setting and guess what, i had a lot of flickering in my earlier test animations. changing that to animation did solve all the flickering in my case.
Title: Re: Animation problem
Post by: Lino Pontes Donnamaria on 2017-02-03, 17:52:00: Hi!
I am using UHD Cache preset aniamtion yes. This image that I posted here with setups do not has this UHD Cache preset aniamtion active, sorry, but it is active.
See in this video part. Has flk...
Forgive me, my english isn't good, but I hope that you understand me.

Thanks guys!
Title: Re: Animation problem
Post by: maru on 2017-02-14, 11:42:59: Hi, sorry for the delay. The kind of flickering you can see in your animation is visible on edges, bright reflections, etc, which means that it is caused by insufficient supersampling (antialiasing). To solve this, you simply need to increase the number of passes. See:
https://coronarenderer.freshdesk.com/support/solutions/articles/5000516725

If you would like to keep similar render time, you can increase the number of passes, but at the same time lower GIvsAA. Here is an example:
10 passes, GIvsAA 16 = 20 passes, GIvsAA 8 = 40 passes, GIvsAA 4
All of these should take similar time to render, where more passes = better antialiasing, and more GIvsAA = better GI. You shouldn't probably go lower with GIvsAA than 4.