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Arnold Lights pass through meshes

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Message 1 of 3
kevmueller
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Arnold Lights pass through meshes

I have a problem I've never seen before: Some of my meshes will always receive lighting that can't be blocked. The meshes that do that are seemingly random. There is no Lightlinking, all lights behave the same. The problem is not in the Materials, the problem stays for all materials. One of the pictures is a normal render. you can already see that wrong ligthing is getting through the hood. The other is in a dark room with lights outside of it and should be completely black. If there are no lights in the scene the problem doesn't occur. I have no idea why that happens. I hope someone can help me there.

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Message 2 of 3

Those are all Arnold shaders?

Is there cast shadows turned on for all objects?

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Message 3 of 3

Yes. Cast Shadow is all on. I Found a Solution though: The Problem only appears when rendering with CPU. GPU works fine.

Update: The solution seems to be the receive Shadows option in the seperate render stats tab and the reason GPU works is that GPU ignores those settings and only uses the ones from the Arnold tab.

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