1.133

CesiumGS/cesium1.133Sep 3, 2025by ggetz

AI Summary

This release adds support for the EXT_mesh_primitive_restart glTF extension, Gaussian splat spherical harmonics, and the Mars ellipsoid, alongside fixes for Gaussian splat rendering and WMTS tile thresholds.

Key Highlights

Added EXT_mesh_primitive_restart glTF extension support
Added spherical harmonics support for Gaussian splats with SPZ compression
Added Ellipsoid.MARS for Mars terrain and imagery
Removed minimum tile threshold for WMTS
Fixed crash when loading PNTS data without binary batch tables

New Features

EXT_mesh_primitive_restart support
Gaussian splat spherical harmonics
Mars ellipsoid
SPZ compression support
WMTS threshold removal

Full Release Notes

1.133 - 2025-09-02

Highlights include:

- Added support for the [EXT_mesh_primitive_restart](https://github.com/KhronosGroup/glTF/pull/2478) glTF extension. [#12764](https://github.com/CesiumGS/cesium/issues/12764)
- Added spherical harmonics support for Gaussian splats, supported with the SPZ compression format. [#12790](https://github.com/CesiumGS/cesium/pull/12790)
- Added `Ellipsoid.MARS` for use with Mars terrain and imagery. [#12828](https://github.com/CesiumGS/cesium/pull/12828)
- Fixed issue where a Gaussian splat tileset would be rendered even if out of current camera view. [#12840](https://github.com/CesiumGS/cesium/pull/12840)
- Removes the minimum tile threshold of four for WMTS. [#4372](https://github.com/CesiumGS/cesium/issues/4372)
- Fixed a crash when loading PNTS (point cloud) data that contained a batch table without a binary part. [#11166](https://github.com/CesiumGS/cesium/issues/11166)

See the [changelog](https://github.com/CesiumGS/cesium/blob/1.133/CHANGES.md) for the complete list of changes.