KeyShot Forum

Technical discussions => General discussion => Topic started by: Adar on June 20, 2013, 07:23:07 am

Title: Objects inside a glass material object are black?
Post by: Adar on June 20, 2013, 07:23:07 am
Hey guys !
I am encountering a weird problem which I didn't find an answer to anywhere on this forum.
For some reason when I use a dielectric material  the objects inside it turn black.
I tried upping the rays in the render settings but to no avail.
Some material colors are in fact slightly visible but in most cases it's just black as if there's a weird strong shadow that doesn't affect reflections over the inner objects.
Anyone knows why?

Thanks !
Title: Re: Objects inside a glass material object are black?
Post by: jhiker on June 20, 2013, 07:34:04 am
Have you got 'Global illumination' switched on...?

http://www.keyshot.com/keyshot4/manual/index.html
Title: Re: Objects inside a glass material object are black?
Post by: Adar on June 20, 2013, 05:59:13 pm
Have you got 'Global illumination' switched on...?

http://www.keyshot.com/keyshot4/manual/index.html
Thanks for the.reply,
looking at the render settings I see I have 1 in global illumination and I also tried upping it to 5 though I can't see any difference.
Title: Re: Objects inside a glass material object are black?
Post by: DriesV on June 20, 2013, 11:38:51 pm
What happens when you switch your glass object's material from 'dielectric' to 'glass' (Two-sided checked)?

Dries
Title: Re: Objects inside a glass material object are black?
Post by: PhilippeV8 on June 21, 2013, 12:40:42 am
How much ray bounces do you have set up ?  It might be too low ?
Title: Re: Objects inside a glass material object are black?
Post by: jhiker on June 21, 2013, 01:00:38 am
Have you got 'Global illumination' switched on...?

http://www.keyshot.com/keyshot4/manual/index.html
Thanks for the.reply,
looking at the render settings I see I have 1 in global illumination and I also tried upping it to 5 though I can't see any difference.
Global illumination is either on or off - checked or not checked - you can't put a number in there.
Check again.
Title: Re: Objects inside a glass material object are black?
Post by: guest84672 on June 21, 2013, 05:50:53 am
It is in the "Settings" tab of the Project window.
Title: Re: Objects inside a glass material object are black?
Post by: Adar on June 22, 2013, 11:39:22 pm
Hey guys,
thanks so much for the replies !
I did need to turn on Global Illumination in the settings tab, for some reason I missed the advanced drop down menu and now it works.
Thanks for all the help !