issues rendering fur

[phix314]

Are your UVs laid out? Do you have a screenshot of your problem?

[brainoise]

yes, my UVs are laid out. The picture would basically be the model with no fur at all. If I add fur to a smaller surface it does render no problem. thx...d

[tharrell]

yes, my UVs are laid out. The picture would basically be the model with no fur at all. If I add fur to a smaller surface it does render no problem. thx...d

That plus you mentioning you've only got 2GB of RAM lead me to believe this is a memory issue (I can't imagine even rendering a chrome teapot with 2GB RAM & Mental*...).

Are you trying to render with Mental Ray or Maya Software?

If rendering in mental, set your render options to display progress messages and comb the output window for your answer. If using Maya Software, fur is a post process and it's likely running out of memory while rendering the fur as a post effect.

--T

(* I kid... a little. 2GB RAM will make you hit walls with MR constantly though, and fur's expensive RAM-wise)

[InfernalDarkness]

(I can't imagine even rendering a chrome teapot with 2GB RAM & Mental*...).

About to type more "Power Words" until:


(* I kid... a little. 2GB RAM will make you hit walls with MR constantly though, and fur's expensive RAM-wise)

When you're right, you're right!

That said, it shouldn't be impossible to render out a pile of Fur even in 32-bit. It's been a few years but we used to use Fur for "grass", and while it was RAM-hungry, it was possible to render... Realistic lighting mostly killed it becoming more viable, although all those silly long-haired rugs we all see in arch/viz renderers seem to be trying to "bring it back, yo."

Brain, let us know what your RAM capacity and usage is like? Those silly chips are dirt-cheap these days, and a quick upgrade would mean you could make some furry, fuzzy creatures. Which are awesome, of course. Fuzzy.

[tharrell]

About to type more "Power Words" until:

Hey, I call 'em like I see 'em, but I do try to be fair about things at the end of the day... except when it comes to MR's render pass system post-2009, which I consider an abomination. :twisted:

MR can't get enough memory though, a fundamental truth of the universe. And you're right. RAM is stupid, stupid cheap right now and maxing out is the best option, but in the meantime...

A second option would be to try doing two render layers of half as many hairs as separate fur descriptions and compositing them, or doing fun tricks like setting the base clumping or base width high and try to get away with using less fur.

If you're using Mental, make super sure that you're using the Rasterizer and volume fur... those will lighten the RAM load quite a bit as well as making your render time much more bearable. And go for shadow maps instead of raytraced shadows too if you can manage it.

--T

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