CGTalk - not enough fur...

technoguy

05-13-2002, 04:46 AM

hello

i am putting fur on a werewolf character. His UVs are layed out nicely, normals sticking out, with no overlaps mainly with cylindrical mapping. I painted several maps for the fur and it seems to be working fine. The big problem is the density of the fur, i put it up to like 500,000 which i know is way too much, and still, i can see the geometry of my character under the fur. Any ideas what could be wrong?

Now the lighting, i ve tried with no shadows, self shadow and shadow maps, i havent played with that a lot but does anyone know which produces the best results? My fur always seems to be visible, no matter if the area is lit or not.

here is a pic (his chest and abs are supposed to be like that, the problem areas are the face and arms)

Thanks a lot

ACFred

05-13-2002, 09:07 AM

I don't have an answer to the hair density question, just a suggestion about fur color.

I always got my best results when I had a very dark color at the base and a lighter color at the tip. You may already have that, I just can't tell from the current lighting.

I hope someone can help you with the hair density. I'd love to see that guy in full hairiness.

-wT-

05-13-2002, 01:29 PM

Well to answer the lighting question, shadow maps produce shadows from fur to fur to model, self shadow produce only shadows from fur to fur, and no shadows make no shadows at all (Surprise surprise :))
So for the most realistic lighting possible, you need to use depth map shadows for the lights and shadow mapped fur. Ofcourse if you need raytraced shadows, I think you can easily render only the fur and it's shadows with the lights in depth map on, and then render the whole scene/animation with the fur off and then put the fur + fur shadows on top of the image/animation in compositing.

But for the density question... no idea, sorry :hmm:
Maybe you could make it even more bigger number, like 1 000 000 furs, and see if it even increases at all. As if you're only putting fur on the head and arms, it may be that you've attached the fur description to the whole model and made a baldness map so only the head and arms are furry, so the 500 000 furs are divided for the whole model, although most of 'em aren't showing up because of the baldness map? I'm not sure of this, but it could be like that?
(Heh, I had an idea afterall ;))

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