Kelsi e81673c4bf perf(m2-cull): precompute static cull factors on each M2 instance ...

The M2 cull SSBO upload and the CPU-fallback culling path both
recomputed worldRadius / cullRadius / effectiveMaxDistSqFactor /
paddedRadius for every instance every frame, even though all of
those values depend only on static instance state (bound radius,
scale, disable-animation flag, ground-detail flag).

Add recomputeCachedCullFactors() to M2Instance and call it once
when an instance is added (both addInstance overloads). The
per-frame upload reduces to one multiply (maxRenderDistanceSq *
cached factor) plus flag packing, and the CPU-fallback culling
path drops the same redundant math. For 5000+ doodad instances
that's measurable.

2026-05-14 12:40:43 -07:00

34 KiB

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