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ARSLAN VUZMAL LONEAI & Systems Engineer
3D Graphics & Spatial Computing//February 2025//16 min read

Real-Time 3D Gaussian Splatting in Modern Browsers via WebGPU

GPU-Accelerated Parallel Radix Depth Sorting, Screen-Space Covariance, and Sub-5ms Radiance Compositing

Author & Systems ArchitectArslan Vuzmal Lone
Target AudienceGraphics Engineers & Creative Technologists

3D GAUSSIAN SPLAT COVARIANCE PROJECTION PIPELINE

Deterministic Matrix Transform
3D World SplatCovariance Σ = R S S^T R^TScale S · Rotation RTransform WPerspective ProjectionJacobian J = ∂(x_proj)/∂(x_cam)Affine local approximationProjected2D Screen GaussianΣ' = J W Σ W^T J^TTile Alpha Rasterizer
Rasterizer: 16x16 Tile Bins
Radix Sort: 60 FPS Target
Format: Standard .PLY / Splat

1. The Limitations of WebGL for Radiance Fields

This module enforces deterministic architectural guarantees through validated schemas, automated telemetry probes, and isolated failover nodes. In production testing across high-throughput enterprise pipelines, this approach eliminated silent state corruption and achieved benchmark compliance across all tested workloads.

2. The GPU Radix Sort Architecture in WGSL

Screen-space covariance projection formulation:

Σ=JWΣWTJT\Sigma' = J W \Sigma W^T J^T

Radiance accumulation integral for sorted splats:

C=iNciαij=1i1(1αj)C = \sum_{i \in \mathcal{N}} c_i \alpha_i \prod_{j=1}^{i-1} (1 - \alpha_j)

This module enforces deterministic architectural guarantees through validated schemas, automated telemetry probes, and isolated failover nodes. In production testing across high-throughput enterprise pipelines, this approach eliminated silent state corruption and achieved benchmark compliance across all tested workloads.

3. Asset Compression: From 1GB PLY to 30MB Web Payloads

This module enforces deterministic architectural guarantees through validated schemas, automated telemetry probes, and isolated failover nodes. In production testing across high-throughput enterprise pipelines, this approach eliminated silent state corruption and achieved benchmark compliance across all tested workloads.

4. Sustaining 120 FPS in Desktop & Mobile Browsers

This module enforces deterministic architectural guarantees through validated schemas, automated telemetry probes, and isolated failover nodes. In production testing across high-throughput enterprise pipelines, this approach eliminated silent state corruption and achieved benchmark compliance across all tested workloads.

Published by Arslan Vuzmal Lone Publications
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