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The calculation of nodes can be very time-consuming. Since this must be run through several times for each pixel, complex node materials can lead to very long render times.By pre-calculating such nodes you can circumvent the repeated calculation of the material and significantly reduce render times. This is exactly what this node is designed to do.

节点的计算可能非常耗时。由于每个像素必须经过多次渲染，复杂的节点材质可能会导致非常长的渲染时间。通过预先计算这些节点，可以绕过材质的重复计算，显著减少渲染时间。这正是这个节点的设计目的。