Xsi Final gathering pass

Discussions about rendering in SOFTIMAGE©
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sirdavid32
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Xsi Final gathering pass

Post by sirdavid32 » 26 May 2010, 07:01

Hello, correct me if I´m wrong but...is it possible to have a final gathering pass? I´ve read the manual and it talks about Image base lighting (HDR images) and combinating these with FG.
I´ve been following the information about framebuffers, but I haven´t seen anything that explains how to render out a final gathering pass.

Has anyone else tried this?
Thanks.

Bests.

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Hirazi Blue
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Re: Xsi Final gathering pass

Post by Hirazi Blue » 26 May 2010, 13:25

As far as I can tell, the "Image Based Lighting" pass would be the easiest way to set up a pure FG pass...

Create an "Image Based Lighting" (HDRI) pass, during its setup tell Softimage to "YES use an existing image clip", choose the "noIcon.pic". Next you remove the whole automatically created environment shader from the "Environment Pass Shaders" list and make sure "FGEnable" is checked. Hey presto, a FG pass... (I hope...)
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sirdavid32
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Joined: 10 Feb 2010, 03:36
Location: Ecuador

Re: Xsi Final gathering pass

Post by sirdavid32 » 27 May 2010, 03:48

I read elsewhere on how to render just finalgather point file and reuse it trough the animation. I think this is of some help also. Thanks!

Soth3dlife
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Joined: 19 Apr 2010, 08:38

Re: Xsi Final gathering pass

Post by Soth3dlife » 27 May 2010, 09:38

FG is irradiance data. You could create an Irradiance channel from the window pass. I usually create Channels unless I need to use any override or partitions or an specific output shader like shadow pass or matte. In this case, one way could be create an Irradiance channel