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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Also using a split lighting set up helps by keeping one side of the face in shadow.

布光也要配合，以便让脸的一侧消失在阴影中。

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I've split the render of the long shadow into two passes, one for the vertical objects such as the cup and the CPU, and one for the horizontal objects such as the desk.

我把长阴影的渲染分成两步，一是对于垂直的物体例如、杯子和主机，另一个是为水平物体例如桌面。

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