Author Topic: Clear Glass is casting a shadow  (Read 7106 times)

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Offline m2tts

Clear Glass is casting a shadow
« on: October 14, 2010, 09:43:56 am »
I am rendering a mask that is made from clear polycarbonate and am using the glass material to represent it. The material is casting a shadow on my face (model of a head) that looks as if were there if the mask were opaque. Am I doing something wrong or is this material broken?

Offline Chad Holton

Re: Clear Glass is casting a shadow
« Reply #1 on: October 14, 2010, 09:48:13 am »
Can you post a screenshot?
Is there a small gap between the face and mask?

Offline m2tts

Re: Clear Glass is casting a shadow
« Reply #2 on: October 14, 2010, 11:25:08 am »
Sorry, I cannot post a screenshot as this is sensitive data. Yes there is a gap between these objects.

Offline Chad Holton

Re: Clear Glass is casting a shadow
« Reply #3 on: October 14, 2010, 11:43:56 am »
Try cranking up the ray bounces and click on "detailed indirect illumination" - if you haven't already.

Offline JeffM

Re: Clear Glass is casting a shadow
« Reply #4 on: October 14, 2010, 03:45:23 pm »
Try cranking up the ray bounces and click on "detailed indirect illumination" - if you haven't already.

Enabling "detailed indirect illumination" should be the correct solution for this. You can find this option in the realtime options menu.

Increasing the ray bounces will slow down your realtime performance, so just try to find the minimum amount needed to get rid of any black areas in reflections or refractions.

Offline m2tts

Re: Clear Glass is casting a shadow
« Reply #5 on: October 15, 2010, 05:21:35 am »
Here is an update. I was using the translucent "skin" material that was in the default library for the head and got the shadows cast by the glass material floating in front of the head. When I change the head material to a diffuse or leather, the glass material is no longer casting shadows. So this has something to do with the translucent material.
« Last Edit: October 15, 2010, 06:35:18 am by m2tts »

Offline boogie

Re: Clear Glass is casting a shadow
« Reply #6 on: October 20, 2010, 04:09:08 am »
thx for the info!

Offline m2tts

Re: Clear Glass is casting a shadow
« Reply #7 on: October 20, 2010, 11:09:54 am »
Jeff or Thomas, any response about how the translucent material is behaving?

guest84672

  • Guest
Re: Clear Glass is casting a shadow
« Reply #8 on: October 20, 2010, 03:50:59 pm »
We are looking into this.