Build a Points InstancedBufferGeometry from loaded data.
Non-pool path (mirrors createInstancedGSplatsMesh's geometry
portion): quad base + EXACT-SIZE point texture / aSortedIndex
storage pair, one fused texel write, identity ordering. The commit
fallback (commit-points-geometry.ts) disposes and re-creates the
geometry on every commit; attachPointStorage's dispose listener
frees the texture with it.
Build a Points InstancedBufferGeometry from loaded data.
Non-pool path (mirrors
createInstancedGSplatsMesh's geometry portion): quad base + EXACT-SIZE point texture /aSortedIndexstorage pair, one fused texel write, identity ordering. The commit fallback (commit-points-geometry.ts) disposes and re-creates the geometry on every commit;attachPointStorage's dispose listener frees the texture with it.