3D Gaussian Accelerated Ray Tracing: Fast training through particle-based backward propagation
3D Gaussian Splatting has made Gaussian primitives a highly efficient representation for real-time novel view synthesis, but its rasterisation-based formulation relies on screen-space approximations that limit accurate view-dependent ordering and the integration of secondary ray effects such as reflections, refractions, and shadows. Gaussian ray tracing addresses these limitations by evaluating explicit ray-primitive intersections, yet it remains costly to train. We observe that the main bottleneck is not ray traversal alone, but the pixel-centric backward propagation, where many threads concurrently accumulate gradients into the same primitive parameters, causing severe atomic contention...
| Authors | Laurent Vit, Oliver Batchelor, Richard Green |
|---|---|
| Primary category | cs.GR |
| Published | 18 August 2026 |
| Last updated at source | 18 August 2026 |
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