Fur Matte Opacity question

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# 1 10-10-2013 , 08:07 AM

Registered User
Join Date: Nov 2002

Location: Philippines

Posts: 136

Hello all,

I have a shot where I have furry characters in fog. FOr the fog I just have a static Maya fluid. Now the characters are at different distances from the camera so some are in more fog than others. I want to render it separately and just put it on top in Nuke, so I render it with a cutout of the characters, meaning I render the characters with a solid black lambert with its Matte Opacit turned to 0. Is there a way to do this with fur? Because the geo of the characters doesn't have any alpha and gives a clean cutout for the fog, but the fur's alpha is a solid white.

Also, if what I'm doing is not the way to go about this, or there are any better ways of doing this, please let me know user added image

Thanks again user added image

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# 2 12-10-2013 , 02:14 AM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

if you think about it, all you want is an solid white alpha for your fluid and a solid black for your character/fur. So if you can't figure out how to do the matte opacity thing just render a separate pass with a white constant on the fluid and black constant on the fur.same result.

...a better idea would be to render with a green constant and a red constant. this way you get an id for the two elements.

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