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Question by 3Nex · Aug 10, 2014 at 07:11 PM · lightingshadow

Weird lighting/shadow when point light very close to surface

alt text

This is the ceiling of my room. There is a real-time point light, and it is located near the ceiling, because there should be a chandelier hanging off it. On point lights that are far from objects, this does not happen.

Can I get rid of this somehow?

The ceiling is white in color (and is part of a .blend imported model).

untitled.jpg (416.9 kB)
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avatar image Jargon · Jun 06, 2015 at 03:00 PM 0
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We have the exact same issue (Unity 5.0.2f1). Did you manage to resolve this? If so, how?

avatar image 3Nex · Jun 06, 2015 at 03:09 PM 0
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Nope, I never solved it and I just try to avoid those situations. For this particular game, I switched to baked shadows and I dropped the functionality of turning the light on or off in-game.

avatar image Jargon · Jun 06, 2015 at 04:03 PM 0
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I hate that this is the only solution. Unity is suffering a lot when it comes to realtime functionality these days.

avatar image RealMTG · Jun 06, 2015 at 04:41 PM 0
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Not 100% sure about this but I think changing your "Bias" in the shadow settings.

avatar image Jargon · Jun 06, 2015 at 05:50 PM 0
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@Real$$anonymous$$TG I read about this on some forum threads regarding similar shadow issues but in this case it made zero difference :(

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Answer by Crystalline · Jun 06, 2015 at 07:06 PM

Never put a light too close to a surface. That's the main rule. Also, keep the bias value a bit higher. There isnt much else to do.

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avatar image Jargon · Jun 06, 2015 at 08:05 PM 0
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Define too close. This only seems to be an issue with soft shadows, not hard shadows. Changing bias has no effect.

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