AI-assisted disclosure: Codex assisted with research, code and writing. Measurements, failure cases and limitations are retained from the original article.

Originally published by Alicia on 2026-10-19: Digital Garden by Alicia .

Native Three.js Gaussian splats worked on both WebGPU and WebGL2 in this test, including direct SPZ v4 loading with SPZLoader. Spark 2.3.1 worked with WebGLRenderer, but the tested integration failed with WebGPURenderer. The same real SPZ v4 file failed Spark’s reader with an “Invalid gzip header” error.

For how this splat study relates to the mesh plant notes, see the garden's Three.js rendering overview .

Correction, 20 October 2026: the original article incorrectly stated that the pinned Three.js 0.186.1 package had no SPZLoader. It does include that loader. I have now directly loaded and rendered the original SPZ v4 fixture on native WebGPU and WebGL2.…