Author Topic: reflection artifacts behind refracted glass  (Read 4427 times)

2015-03-10, 01:12:15

Juraj

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I had this issue some time ago, but it seems to reappear on random basis. Any material, any angle. Sometimes it goes away automatically..

Anyone had similar encounter ? It's not because of specular maps, the bug appears (although in smaller fashion) even if only diffuse is used. Third screenshot shows it on completely matte surface.

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2015-03-10, 01:20:13
Reply #1

Juraj

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Simply hiding glass in windows makes issue go away.

Also making the glass "thin" solves it, so that ties this to refraction, but which I need.
Please follow my new Instagram for latest projects, tips&tricks, short video tutorials and free models
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2015-03-10, 09:16:43
Reply #2

maru

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To me this looks like this (first point):
https://coronarenderer.freshdesk.com/support/solutions/articles/5000516180
Temporary workaround is to use thin glass or rayswitch (I'm about to check it and write more detailed instructions).
All I can say is I hope this gets fixed soon...
Marcin Miodek | chaos-corona.com
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2015-03-10, 10:16:53
Reply #3

pokoy

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A really nasty bug. Working around this with thin glass is not viable in some cases so a fix would be highly appreciated!

2015-03-10, 12:00:27
Reply #4

maru

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Quick workaround. But it's not perfect. The glass is simply invisible in reflections...
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2015-03-10, 12:15:51
Reply #5

daniel.reutersward

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I had a similar problem here:
https://forum.corona-renderer.com/index.php/topic,5375.msg36697.html#msg36697

If I recall correctly the only way to fix that problem was to use the "thin" option (as stated in this thread also).

I really hope this will get fixed as well...

2015-03-10, 13:15:09
Reply #6

Ondra

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Yes, it is another instance of the bug maru linked. Unfortunately currently there is no 100% solution. We will have to wait for a future rewrite that will solve it.
Rendering is magic.How to get minidumps for crashed/frozen 3ds Max | Sorry for short replies, brief responses = more time to develop Corona ;)

2024-03-30, 00:53:55
Reply #7

shortcirkuit

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hey guys - 9 years later - this hasnt been solved?

2024-04-01, 19:26:53
Reply #8

maru

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This specific case should be resolved, at least when using the Corona Physical Material, which is the default since a few versions.
There are still some cases where "dark highlights" may appear when using non-physical effects, see: https://support.chaos.com/hc/en-us/articles/4528311915025-Known-bugs-and-limitations
Marcin Miodek | chaos-corona.com
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