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i'm starting to optimize my iphone scene, and all my objects have the "cast shadows" and "receive shadows" checkbox checked. Since I am not using lights on my static geometry (the have lights baked in from maya, and my lights for my characters have 'no shadows' checked) do I need to worry about these boxes? will these boxes turned on take up any processing?
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In short, no. I'm assuming your lights cull only the characters (if not I'd do that since environment lighting is baked anyway), and since they cast no shadows there isn't a problem. Logically, since lighting originates from the light itself, if they cast no shadows, the engine will never need to check whether or not the photons emitted will need to cast a shadow on an object. Cheers, == Thanks, that is what i thought but wanted confirmation.
Jul 15 '10 at 08:58 PM
gadavis
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I'm pretty sure those options are only used for custom shaders
No they're used for the out-of-the-box shaders as well.