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-   -   Mental Ray help please. (https://simplymaya.com/forum/showthread.php?t=18472)

Calvin 30-09-2005 06:51 AM

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:

herr_klaus 01-10-2005 04:31 PM

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.

herr_klaus 01-10-2005 04:36 PM

btw what kind of lightsource do u use?

Mental ray area lights?

Do these lightsource emit photons?

Calvin 02-10-2005 12:44 PM

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

herr_klaus 05-10-2005 11:19 AM

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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