View Full Version : mental ray skin hard shadow problem

06 June 2006, 05:51 PM
Sometimes with Mental ray skin shader I get a un natural hard shadow. Is there a way to soften it or get it to render correctly?

When I switch out the skin shader for a gray standard max shader, the shadow looks softer and more natural. So it's definatly just a skin shader thing.

I've attached a .jpeg showing the problem

06 June 2006, 04:10 PM
I have seen this problem before but never find the solution, maybe it's related to the bump and scale. I don't know how to solve it, but I'll ask you to make a test: render it without bump and see if it still happens.

06 June 2006, 06:01 PM
Maybe this could help? :

06 June 2006, 03:35 PM
I solved it - sort of. For starters, I discovered that the hard shadow was just on the unscattered top skin layer. But that info turned out to be irrelevant.

I had been using two large MR area spot lights on each side of the building my character is sitting in to simulate ambient sky light coming in through the windows. I changed it to be one light per window and the hard shadow went away. In it's place is a very natural shadow.

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06 June 2006, 03:35 PM
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