perf: Fuse GSplat budget bucket indices into LOD evaluation#8684
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- Precompute sqrt-based budgetBucket in evaluateNodeLods when global max distance is passed - GSplatBudgetBalancer balance() only distributes nodes to buckets (no second sqrt pass) - Rename gsplat-local-constants.js to constants.js; export NUM_BUCKETS
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Precomputes per-node sqrt-based distance bucket indices during optimal LOD evaluation when enforcing global splat budget, so
GSplatBudgetBalancer.balance()no longer walks octree nodes again only for bucket placement.Changes
evaluateOptimalLods/evaluateNodeLods: optionalglobalMaxDistance; writesNodeInfo.budgetBucket(same mapping as before).balance(): fills buckets frombudgetBucket;NUM_BUCKETSshared viagsplat-unified/constants.js.gsplat-local-constants.js→constants.js; update imports.