Digital humans the art of the digital double
Ever wanted to know how digital doubles are created in the movie industry? This course will give you an insight into how it's done.
# 1 30-09-2005 , 06:51 AM
Registered User
Join Date: Nov 2002
Location: Philippines
Posts: 136

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.

user added image

My curtains seem to be glowing for some reason. Any help would be much appreciated. :headbang:

# 2 01-10-2005 , 04:31 PM
Registered User
Join Date: Jan 2005
Posts: 61
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.


tck
# 3 01-10-2005 , 04:36 PM
Registered User
Join Date: Jan 2005
Posts: 61
btw what kind of lightsource do u use?

Mental ray area lights?

Do these lightsource emit photons?


tck
# 4 02-10-2005 , 12:44 PM
Registered User
Join Date: Nov 2002
Location: Philippines
Posts: 136
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

# 5 05-10-2005 , 11:19 AM
Registered User
Join Date: Jan 2005
Posts: 61
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.


tck
Posting Rules Forum Rules
You may not post new threads | You may not post replies | You may not post attachments | You may not edit your posts | BB code is On | Smilies are On | [IMG] code is On | HTML code is Off

Similar Threads