You can also plug an amibient occlusion node in ambient slot in environement sampling mode.
You need obviously an environement map of your scene. ( dont forget to blur it and resize to 128x64 !!!! )
Harry Bardak
TD / Compositor.
Http://perso.wanadoo.fr/harry.bardak/
+33 6 76 63 35 54
+44 781 661 4147
-----------------------------------------------
> From: xsi(at)colorshopvfx.dk
> To: XSI(at)Softimage.COM
> Subject: Re: Hair and FG
> Date: Thu, 5 Oct 2006 11:14:53 +0200
>
> Really nice Oz! Thumbs up from here.
> Morten Bartholdy
> 3D & VFX Artist
> ----- Original Message -----
> From: oz
> To: XSI(at)Softimage.COM
> Sent: Thursday, October 05, 2006 11:48 AM
> Subject: Re: Hair and FG
> hi..
> what we did is kind of fake... we renderedMapped a sequence of the skin, of each charatcer, for each shot, without hair using FG and AO and shadows, (we had a Clone for each character mesh) then applied the rendermap sequeunce to the original
> mesh using constant shading, and also transfered this rendermap sequence to the hair.
> we set the ambience of the scene pretty high (0.7-0.9) and plugged the rendermap sequence to the ambient
> port of the geo hair shader, so the hair was mainly ambient lit.. We also added some mixers to change
> the tip color and do some variations,,. then we rendered the fur without FG and AO and I think even without shadows..
> it was almost 2 years ago.. so I dont remember exactly.. I think today it's possible to this in one rendering pass,
> using lightmaps... maybe it was even possible back then.. :)
> anyway you can see the final result here: http://www.ozadi.com/animations/rabbits.zip (14MB QT)
> Oz.
> www.ozadi.com
> ----- Original Message -----
> From: guillaume laforge
> To: XSI(at)Softimage.COM
> Sent: Thursday, October 05, 2006 9:35 AM
> Subject: Re: Hair and FG
> I would go with environment occlusion to get close to FG look.
> But I remember Oz Adi on the list use successfully FG with hair, using light map to bake fg effect or something like that...
> Volumic shadow map could be the other way but I'm doing some hair rendering like this and I experienced lot of crash ( memory problem I think...).
> 1/2
> --
> Guillaume Laforge
> freelance TD | cg Artist
> my blog ! http://vol2blog.blogspot.com/
> On 10/5/06, Andi Farhall <andi(at)clearpost.co.uk> wrote:
> Before i set off down this road which - to me appears to be madness - i was wondering if anyone had actually lit hair with FG and got results that were A/ good enough for comercials clients and B/ rendered quicker than hours a frame.
> Any experiences most welcome before I tie up our renderfarm for weeks...
> cheers.
> A slightly balding Andi.
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