Module splats

The 3D Gaussian-splatting subsystem: loads splat scenes (.ply / .spz, or a picked/dropped source), the GPU radix sort, and the render pass that preprocesses + draws them. Imported via the taos/splats subpath, e.g. import { GaussianSplatPass } from 'taos/splats';.

Classes - Render Graph

GaussianSplatPass: Abstract base class for a render graph pass.

Classes - Splats

GaussianSplatTileset
GeoSplatFeature

Classes - Other

GpuRadixSort

Interfaces - Splats

SplatTileNode: A node in a splat tileset tree.
SplatTilesetView: Per-frame camera view for LOD + culling.
GaussianSplatTilesetOptions

Interfaces - Other

GaussianSplatDeps
GaussianSplatOutputs
GltfSplatContent: Decoded glTF splat content: the splats plus the node's local transform (mat4, column-major).
RadixSortOptions
SplatCamera: One training camera pose from a 3DGS cameras.json (world / splat space).
ResolvedSource
SplatData: A decoded Gaussian splat cloud in renderer-ready form. The two typed arrays are uploaded verbatim to GPU storage buffers.

Variables

SPLAT_GEOM_U32: u32 words per splat in the geometry buffer.
SPLAT_GEOM_STRIDE: Bytes per splat in the geometry buffer.
SH_COEFFS: Spherical-harmonic coefficients stored per splat (degree 3 = 16).
SPLAT_SH_U32: u32 words per splat in the SH buffer (16 coeffs × 3 channels × f16 / 2).

Functions

loadGaussianSplatGlb: Decode a glTF Gaussian-splat .glb (e.g. a Cesium 3D-Tiles splat tile) into SplatData + the splat node's transform.
transformSplatData: Bake a column-major mat4 m into a SplatData in place: transforms each splat's position, rotates its orientation quaternion by m's rotation, and scales its size by m's scale. Use to place a decoded splat cloud at a world location/orientation (the GaussianSplatPass has no per-cloud model matrix). Assumes m is a similarity transform (rotation + uniform-ish scale + translation), which Cesium splat node + ENU placement matrices are.
pickDirectory: Prompt the user for a directory and resolve the best splat file inside it.
resolveDrop: Resolve a dropped DataTransferItem (file or directory) to a splat source.
loadSplatData: Load a resolved file into SplatData, dispatching by extension.
loadPly: Parse a 3DGS .ply from a File/Blob, streaming the body. onProgress receives a 0..1 fraction as splats are decoded.
shCoeffCount: ((deg + 1)^2) — number of SH coefficients for a given band.
sigmoid: Logistic sigmoid, matching the activation 3DGS applies to stored opacity.
floatToHalf: Convert a JS number to its IEEE-754 half-precision (f16) bit pattern.
packHalf2: Pack two f16 values into one u32 (low half = a), matching WGSL pack2x16float.
loadSpz: Parse a .spz file. onProgress reports a 0..1 fraction (the gzip inflate happens up front as a single step, then per-splat unpacking streams the fraction toward 1).