Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Mikhalenko on 2016-06-06, 11:23:52

Title: Corona sun bug
Post by: Mikhalenko on 2016-06-06, 11:23:52
Hi all.
For scene lightning I use Corona Sun. Bt in Some areas it make image like "burned". Like on teapot, floor, chair in attachment.
I already try turn off visibility in reflection. It's dosen't help. And this problem appears in differente scene
Title: Re: Corona sun bug
Post by: Ondra on 2016-06-06, 12:24:30
we are just now working on a fix for this
Title: Re: Corona sun bug
Post by: Frood on 2016-06-06, 12:36:08
One of the best news recently!

@Mikhalenko:
In short: activate "thin" in your glass pane material.

In long(er):
https://forum.corona-renderer.com/index.php/topic,6883
https://forum.corona-renderer.com/index.php/topic,10923.msg69753.html#msg69753


Good Luck

Title: Re: Corona sun bug
Post by: agentdark45 on 2016-06-06, 14:52:39
we are just now working on a fix for this

Awesome news! The less work-arounds the better. Fully refractive glass in windows with no slowdown or interior darkening, yes please!
Title: Re: Corona sun bug
Post by: Ondra on 2016-06-06, 18:01:51
Awesome news! The less work-arounds the better. Fully refractive glass in windows with no slowdown or interior darkening, yes please!

well... that wont be the case, no algorithm can do just that and probably never will. It will still not be refractive for GI, and there will be some darkening, but consistent, not localized in highlights
Title: Re: Corona sun bug
Post by: agentdark45 on 2016-06-06, 18:06:41
Awesome news! The less work-arounds the better. Fully refractive glass in windows with no slowdown or interior darkening, yes please!

well... that wont be the case, no algorithm can do just that and probably never will. It will still not be refractive for GI, and there will be some darkening, but consistent, not localized in highlights

Ok, good to know - so the "best" workflow for interiors will still be thin glass + single sided planes?
Title: Re: Corona sun bug
Post by: Ondra on 2016-06-06, 18:12:20
That is definitely the fastest - I dont know why people use something else, I think there is exactly zero chance to see the glass refraction (except for bent glass which can be done with bump map in all modes). But we will try to balance things out so it is perfectly usable even in the default non-thin mode.
Title: Re: Corona sun bug
Post by: Juraj on 2016-06-06, 23:57:21
Awesome news! The less work-arounds the better. Fully refractive glass in windows with no slowdown or interior darkening, yes please!

well... that wont be the case, no algorithm can do just that and probably never will. It will still not be refractive for GI, and there will be some darkening, but consistent, not localized in highlights

Ok, good to know - so the "best" workflow for interiors will still be thin glass + single sided planes?

I am using it for normal solid mesh panes. This way I can just swap the type of glass I want. Also thin glass applied to solid will still yield better reflections, you can stack two offset bumps, you get internal reflection,etc...

Thin plane doesn't make sense to me, irregardless of glass fakeness.
Title: Re: Corona sun bug
Post by: mitviz on 2016-06-07, 08:12:30
i agree with Juraj, especially here where so many double glazed windows are used, it looks way better to have two sets of glass offset with a bump map to give a nice effect