逐像素的动态光照将对每个受影响的像素增加显著的计算开销，并可能导致物体会被渲染多次。

Per-pixel dynamic lighting will add significant rendering overhead to every affected pixel and can lead to objects being rendered in multiple passes.

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使用延迟光照，光影投射器仍然需要为每个阴影投射渲染一次或者多次。

In Deferred Lighting, shadow casters still need to be rendered once or more for each shadow-casting light.

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第一步包括将模型渲染多次。

The first step involves rendering the model multiple times.

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