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karnage 261 posts
Hey everyone,
I'm having some lighting issues with Shave and a Haircut, where the light really blows out the color. I've tried all types of lights, and I've unlinked the lights to the hair display node. I also tried to convert the hair to polygons but I run out of memory and get a runtime error.. Any advice or magic buttons I can press?
Oh and I am rendering using mental ray.
--attaching a test render to show.
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mahmoudnahmad 1,159 posts
passes/layers to control groups of lights rather than light linking. Maybe that could be a work around for your hair, if no one else comes up with a suggestion.
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BColbourn 2,323 posts
perhaps its a quality in the hair material itself that's causing the lack of color? try changing some settingsi n there if possible, maybe glossiness/sheen.
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not sure how the hair materials work in maya but in XSI the same thing happens and you just have to turn down the specular highlight a lot.
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karnage 261 posts
Thank you for the suggestions! I'll try again tonight. I've read that Shave and a Haircut is tough to light because of its own internal shading systems. I guess there is no reason why I couldn't render it in passes anyway...
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Claymation 600 posts
I've never used shave, or maya hair, but i've never had good experiences with maya fur and mental ray. I've always rendered the fur seperately in software, it's a lot faster, and i've always gotten a better result.
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mahmoudnahmad 1,159 posts
claymation just gave you the solution.
render the model, then hide her mesh then have separate light setup for hair, turn the original lights for model, then switch them off and on for the hair ones.
rendering each a lone will get u the best fastest result, but i dont know how will u get the shadows though.
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Claymation 600 posts
Don't hide the model, just turn the Matte Opacity on it's texture to zero, that way your hair won't render where it's covered by the head. And you can do a shadow pass in software as well.
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zachm 1,230 posts
The few times i've had to tackle hair what I've done is what Clay said, but I added another step to it so that I could have some real control over the spec. I set up the beauty pass so that the lights arent emitting specular, and then duplicate that pass, and set the lights on that pass to only have specular and no diffuse, that way I can pull the spec up and down, or mask out parts of it that are blowing out, ect. Also, if you have more than one light, you can do an attribute override for that renderlayer and have each light be red, green, or blue, so that way you can isolate specular hits from each light in your scene. Good luck! Hair is a tough one. Shave and a haircut makes it pretty easy though, and I agree with Clay that Maya fur is the jam.
-Z
