We present WebSplatter, an end-to-end GPU rendering pipeline for the heterogeneous web ecosystem. Unlike naive ports, WebSplatter introduces a wait-free hierarchical radix sort that circumvents the lack of global atomics in WebGPU, ensuring deterministic execution across diverse hardware. Furthermore, we propose an opacity-aware geometry culling stage that dynamically prunes splats before rasterization, significantly reducing overdraw and peak memory footprint. Evaluation demonstrates that WebSplatter consistently achieves 1.2× to 4.5× speedups over state-of-the-art web viewers.
@article{arxiv.2602.03207,
title = {WebSplatter: Enabling Cross-Device Efficient Gaussian Splatting in Web Browsers via WebGPU},
author = {Yudong Han and Chao Xu and Xiaodan Ye and Weichen Bi and Zilong Dong and Yun Ma},
journal= {arXiv preprint arXiv:2602.03207},
year = {2026}
}