KeyShot Forum

Technical discussions => Materials => Topic started by: jhiker on October 20, 2011, 08:54:47 AM

Title: Glass changes colour of materials underneath
Post by: jhiker on October 20, 2011, 08:54:47 AM
Hoping for a quick fix here..
My white ceramic tubes have gone black when I put a glass cover tube over them.
If I hide the glass cover they are white as intended.

I have the (Clear Double-Sided #2) glass material type set to 'solid glass'.
Thanks.
Title: Re: Glass changes colour of materials underneath
Post by: jhiker on October 20, 2011, 08:59:21 AM
Additional images
Title: Re: Glass changes colour of materials underneath
Post by: m2tts on October 20, 2011, 09:22:36 AM
Try upping those raybounces.
Title: Re: Glass changes colour of materials underneath
Post by: guest84672 on October 20, 2011, 10:04:47 AM
and check detailed indirect illumination in the realtime tab.
Title: Re: Glass changes colour of materials underneath
Post by: jhiker on October 20, 2011, 02:23:08 PM
Quote from: Thomas Teger on October 20, 2011, 10:04:47 AM
and check detailed indirect illumination in the realtime tab.

Thomas - I have 'detailed indirect illumination' checked, as you can see from the screenshot.
Title: Re: Glass changes colour of materials underneath
Post by: guest84672 on October 20, 2011, 03:17:25 PM
yes - but only 5 ray bounces. Needs at least 12.
Title: Re: Glass changes colour of materials underneath
Post by: PhilippeV8 on October 20, 2011, 11:14:01 PM
Yes, 5 or below is good for scenes with no glass or single plane glass with nothing behind.
Title: Re: Glass changes colour of materials underneath
Post by: jhiker on October 21, 2011, 12:18:47 AM
Struggling with this - 16 bounces and no change.
Title: Re: Glass changes colour of materials underneath
Post by: jhiker on October 21, 2011, 12:47:27 AM
Might be getting somewhere...

If I do a 'realtime render' from the render tab the preview still appears to show 'black' materials but the rendering window appears to show the materials correctly.

Thanks for the suggestions.
Title: Re: Glass changes colour of materials underneath
Post by: aebstract on October 26, 2011, 05:16:08 AM
Anytime I do plastics, glass, etc I do not use realtime rendering, I pop my raybounces up to like 64. Just a personal thing, but the higher the ray bounces the better quality you're gonna get out of something like that. You simply can't go that high with the realtime.