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Mental Ray GI fake

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Jeff
Mental Ray GI fake
by
on Aug 17, 2005 at 10:05:43 pm

Anyone have a good recipe for faking GI in Mental Ray or optimizing real GI in an outdoor scene? Using FG or GI are just so expensive. Thanks in advance.

jeff.:


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Jon W.
Re: Mental Ray GI fake
on Aug 18, 2005 at 2:55:34 am

Never used it before but do a search for GI Joe on highend3d.com or google it. I've heard its good to do fake GI


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Steve Sayer
Re: Mental Ray GI fake
on Aug 18, 2005 at 3:20:23 am

Good suggestion.

GI Joe was hosted by its author on http://www.pixho.com, but the site seems to have been taken down.

Here's an old link, not sure what version: http://www.arch.columbia.edu/file/17605/

-Steve


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Jon W.
Re: Mental Ray GI fake
on Aug 18, 2005 at 4:00:55 am

if it were an indoor scene you could also use an array of spotlights/pointlights that slightly overlap to give you a nice even lit look... depends on your scene but yea directionals (like GI Joe) would be best.


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anthonymcgrath
Re: Mental Ray GI fake
on Aug 18, 2005 at 2:29:06 pm

yeah GI_Joe is the one to look about for - if you cant find it I'll dig it out and email it you - it isn't a massive schlep to install :)

failing that there is a shader on highend3d.com called RealFakeGI which is kinda cool too tho not sure if you get any kind of ambient occlusion results off it in the same way you do with GI_Joe :/

RealFakeGI and Dirtmap shaders should give nice results if used together :)


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Sean Fennell
Re: Mental Ray GI fake
on Aug 18, 2005 at 5:23:50 pm

Try this script along with HDRI shop program. It will create a dome of lights connected to an HDRI map in maya which can fake outdoor GI scenes.

http://www.highend3d.com/files/dl.3d?group=melscripts&file_loc=HdrShopLight...



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