![]() Only spot lamps can cast buffered shadows. Also strand-rendered materials (as can be used for hair or fur) cannot cast ray shadows with the Blender Internal renderer, so you have to use buffer shadows for them so their shadows look realistic. The main difference is that buffered shadows are much quicker to calculate, but take more memory, and can be of lower quality without some fiddling. There are two different kinds of shadows that lights may cast: buffered and ray-traced. ![]() As a result they can cast accurate raytraced soft shadows, at the expense of additional render time.
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