Remove per-splat GPU compaction for CPU sort path#8559
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mvaligursky merged 1 commit intomainfrom Mar 30, 2026
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Remove the per-splat flag+scatter GPU compaction (GSplatCompaction) used for frustum culling on the CPU sort path. The cost of the 3-pass prefix-sum compaction pipeline did not justify the benefit. Only the interval-based compaction is retained. Made-with: Cursor
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Remove the per-splat flag+scatter GPU compaction (
GSplatCompaction) used for frustum culling on the CPU sort path. The cost of the 3-pass prefix-sum compaction pipeline did not justify the benefit. Only the interval-based compaction (GSplatIntervalCompaction) is retained, used by both the GPU sort and local compute renderer paths.Changes:
GSplatCompactionclass and its two exclusive WGSL shader chunks (compact-flag, compact-scatter)GSplatManagerrefreshIndirectDrawand frustum-changed handling to only use interval compaction