Authors: Rouli Freeman, Alexander Sannikov, Adrian Margel (2025)
Introduces Holographic Radiance Cascades (HRC): a modified probe structure that maintains high spatial resolution perpendicular to the sampling direction. Single-shot, noiseless, and reports results close to the 2D reference solution. ~1.85ms at 512×512, ~7.67ms at 1024×1024 on RTX 3080 Laptop.
Main limitation: O(N × X²) memory, which is the primary barrier to scaling to 3D.
Implementations: amitabha (Rust/CUDA) · Volumetric-HRC · Ray visualiser