Well as you will notice this Texture CD also includes a few extras such as shadow maps and dirt masks, so lets try putting these into use.

好吧，你可能会注意到这张材质光盘中也包括了一些附加的东西，比如：阴影贴图和污垢的遮罩，所以让我们试着将它们应用进去。

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For Directional lights Unity can use so called Cascaded shadow Maps (alternatively called "Parallel Split shadow Maps") which give very good shadow quality, especially for long viewing distances.

对于平行光，Unity可以使用级联阴影贴图(或成为平行分割阴影贴图)有很好的阴影质量，特别是远距离观看。

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