对于聚光灯和点光灯，阴影分辨率决定了阴影贴图大小。此外，对于在屏幕上覆盖小面积的灯，使用较小的阴影贴图分辨率。

For Spot and Point lights, shadow resolution determines shadow map size. Additionally, for lights that cover small area on the screen, smaller shadow map resolutions are used.

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光分辨率是以距离到镭射点直径的比例关系来描述的。

Optical resolution is expressed as a ratio of the distance to the resolution spot divided by the diameter of the spot.

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