Hiding the sky, but not its GI?

Become a member of the CGSociety

Connect, Share, and Learn with our Large Growing CG Art Community. It's Free!

THREAD CLOSED
 
Thread Tools Search this Thread Display Modes
  09 September 2012
Hiding the sky, but not its GI?

Hi there.
I am making a scene. I have a background object with a picture of a street. That is the background.

I have a 3D object (a car, actually) in the scene. I in put a light to light the car, but I also want to have a sky object in the scene to generate some global illumination and AO so that the dark areas of the car don't get so dark. (sort of like a fill light).

The problem is, that when I put the sky in it hides what's on the background. Therefore, the question is, how can I get the GI from the sky to effect the scene without completely obscuring the background.

Thanks,

Joe.
 
  09 September 2012
Use a compositing tag.
__________________
The Third Party | Homepage | My Reel
"You need to know what you're doing before you start, and to start because you need what you're doing."
 
  09 September 2012
Thank you Pers. I realize that the compositing tag would be useful to hide the sky in the compositing program, but is there a way to hide the sky in order to see the background image in the viewport?

This way we can do test renders without having to composite it. Do you know what I mean?
 
  09 September 2012
Compositing tag isn't (only) for external composting apps (actually there's a special external compositing tag for that), it is made exactly for what you describe.

Add the tag to your sky, uncheck "seen from camera" and leave "seen by GI" on and that's it. It will compute the light, but won't be seen in your render, hence leaving your background visible.
 
  09 September 2012
Thanks Eric!

Best,

Joe.

Last edited by JoeHerman : 09 September 2012 at 07:30 PM.
 
  09 September 2012
Originally Posted by JoeHerman: Thanks Eric, Like your avatar says, you are a know-it-all!


The manual is a good candidate for looking up information of features with only two clicks too...honestly!
__________________
FX & Design
www.naviť.com | YouTube | Facebook
 
  09 September 2012
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright ©2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 04:00 PM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.