SOG with 3D Tiles

[cavencj]

Feature

Have you considered combining PlayCanvas's SOG with 3D Tiles? This approach could reduce file sizes, thereby accelerating network requests.

[javagl]

3D Tiles is heavily relying on glTF. The splats in glTF are represented with a glTF extension. The KHR_gaussian_splatting is currently about to be finalized. Any form of compression for splat data is expected to be another extension of glTF. For example, Cesium currently supports KHR_gaussian_splatting_compression_spz_2.

The SOG format is "just another compression" for splat data. There are considerations to move this into a glTF extension. So there could be some KHR_gaussian_splatting_compression_sog extension in the future, and support for this could be added to CesiumJS. But there are no specific plans for when and how this is going to happen.

Beyond that, I'd consider this question as a duplicate of #13033 and will close it for now. If you disagree, feel free to reopen. Otherwise, further thoughts could be added at #13033