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Ace

Would that large triangle in the center correspond to just a single node or multiple nodes? (The triangle that's in the pink, green purple, and orange boxes)

simply_complicated

How is the K-D tree actually constructed? How do you know where to partition space?

Max

@Ace the large triangle would most likely be referred to by every node it intersects.

@simply_complicated assuming you don't want to compute the optimal solution minimizing some metric, you can use heuristics. For example, you could sort the primitives into buckets and choose a split plane that partitions the buckets equally.

rmvenkat

Are there any drawbacks which KD-tree has, when compared to BVH?

Zhuoqian

These look a lot like decision-trees' decision boundaries.