Chaos Corona Forum

General Category => Gallery => Work in Progress/Tests => Topic started by: irrreal on 2014-06-13, 22:15:05

Title: Living room. Dots problem
Post by: irrreal on 2014-06-13, 22:15:05

Hello!

Corona is just awesome.
But sometimes I get these strange dots.
How can it be fixed?
It does not depend on render time

Title: Re: Living room. Dots problem
Post by: Ondra on 2014-06-13, 22:56:35

Can you post screenshot of your settings?

Title: Re: Living room. Dots problem
Post by: irrreal on 2014-06-14, 00:07:32

I will be able to make screenshot tomorrow if necessary.
But it's all by default. Lights are corona's ies, environment - coronaSky.
Scene was created in "slower version" of Corona but rendered in full-speed i7 CPU. Could it be a problem?

Title: Re: Living room. Dots problem
Post by: Ondra on 2014-06-14, 11:43:09

no, the two versions are identical in shading

Title: Re: Living room. Dots problem
Post by: maru on 2014-06-14, 12:09:12

I would suspect these fireflies come from the ceiling lights. It could be caused by:
a) IES lights
b) light bulb object/material in wrong place - do not use refractive glass
c) object/material of the light socket, mirror-like material reflecting light could cause this, refractive caustics could cause this

Title: Re: Living room. Dots problem
Post by: quadrays on 2014-06-15, 22:12:49

Try to use other Global Illumination for reflect/refract materials with CoronaRaySwitch Material.

Title: Re: Living room. Dots problem
Post by: lacilaci on 2014-06-15, 23:06:18

Does the wall material have a bump map? If it does, what is your map filtering settings and what is the bump mapping strength?

Title: Re: Living room. Dots problem
Post by: irrreal on 2014-06-17, 19:53:57

thank you for all advices.
The best result that I got in this scene was after setting lights from IES to disk.
But still it wasn't ideal.

I think the scene is somehow corrupt, so will see how it gonna be in further projects