RE: Dark areas become alpha?

["John Norman" <john.norman(at)grapecity.com>]

Hi Guillaume,

I'd sure appreciate a preset.

Another problem I noticed was with the door that I have in my scene.

I have attached the preset that I am using for the door.

My problem is similar to the previous mail.

I dark areas become alpha.

Just apply this preset to a grid, and use the dark tree shader included.

And you will see the problem.

Thank you very much.

 

john

 

 

 

-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]On Behalf Of guillaume laforge
Sent: Thursday, July 28, 2005 6:02 PM
To: XSI(at)Softimage.COM
Subject: Re: Dark areas become alpha?

It's because of the dirtmap in the camera. You must use the image rendered before the dirtmap to control the weight of your mix2color in your lense shader. Pick  the alpha from your toon or Lens effect shader.
It's something like that : Lense_Effect > Pick_Channel (alpha) >  weight  in your mix2colors.

I  can send you a preset tonight if you need.

Cheers,

Guillaume Laforge
Cg artist / Jr Td
Antefilms studio

2005/7/28, John Norman <john.norman(at)grapecity.com>:

Hello,

I noticed when I render something, anything with a dark shade becomes an alpha, this makes it hard for me to composite. I end up seeing the bg wherever the darken areas are.

I have a dirtmap effect connected to the camera lens.
A global dirtmap. Can this be part of the reason?
It's driving me nuts.
Does anyone know how to solve this?
Thanks

john

Attachment: wooden door.rar
Description: wooden door.rar