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sushi-one

billboarding - face normals

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I'm making a simple billboard test, everything seems ok at first, but when I turn my flying object, the billboard sprites are dark.. since I rotate all the sprites agains the camera I suspect there is something wrong with my normals.. math is not something I'm very good at, so my question is.. in what direction is the normal supose to point?

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Usually bilboards just should not be lit/shaded. That is, their color shouldn't depend to normals and lights. There's no general "right" way to lit/shade 'em.

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