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Old 30-09-2005, 07:51 AM   #1
Calvin
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Default Mental Ray help please.

Hi, everyone. I'm starting to learn Mental Ray, and I ran into this problem while trying out a "simple" GI scene.

http://img.photobucket.com/albums/09...ay_Problem.jpg

My curtains seem to be glowing for some reason. Any help would be much appreciated. :headbang:
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Old 01-10-2005, 05:31 PM   #2
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these are photons bouncing back , absorbing colour information probaly the reason why it has a blue-ish glow.


u have to let the photons through the curtain , the curtains (actual geometry) is bouncing the photons causing indirect illumination.

thats all i know.
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Old 01-10-2005, 05:36 PM   #3
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btw what kind of lightsource do u use?

Mental ray area lights?

Do these lightsource emit photons?
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Old 02-10-2005, 01:44 PM   #4
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Thanks, herr_klaus. For this scene I'm using a spotlight actually, and yes it is emitting Global Illumination Photons.

I suppose I could pull the curtains a bit further apart to let the photons in. Or make the curtains a bit transparent.

And while I'm asking, anyone have any workflow tips on MAYA Mental Ray GI? Thaks
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Old 05-10-2005, 12:19 PM   #5
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i can't remember how i bypassed this problem.
I had this problem before but very long time ago.


tips ?

always use a sealed compartment don't let photons escape.
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