The key idea is that this super complicated volumetric explosion data can be reimagined as a large batch of point light sources.

核心思路在于，这个超级复杂的体积爆炸数据可以作为大批点光源来重新构想。

Most of these scenes are rendered using hundreds of thousands of these point light sources, and as you can see, the results are unbelievable.

这些场景的渲染大都使用了数以十万计的点光源，而正如你所看到的，结果令人难以置信。

If we solve this light transport problem between these point light sources, we get a solution that is remarkably similar to the original solution with path tracing, however, solving this new representation is much simpler.

如果我们解决这些点光源之间的光传输问题，我们就能得到一个方案，它与原来路径跟踪的方法非常相似，然而解决这个新的课题却要简单得多。