Number of splats.
Highest SH band actually present in the source (0..3). Drives the default active-degree clamp; coefficients above this are zero.
Packed geometry, count * SPLAT_GEOM_U32 words.
Packed SH, count * SPLAT_SH_U32 words.
World-space AABB min, for framing the camera on load.
World-space AABB max.
A decoded Gaussian splat cloud in renderer-ready form. The two typed arrays are uploaded verbatim to GPU storage buffers.