CoherentRaster: Efficient 3D Gaussian Splatting for Light Field Displays
This work addresses the computational bottleneck of rendering light field displays for real-time applications, offering an efficient solution for 3D Gaussian Splatting in multi-view contexts.
CoherentRaster enables real-time, high-quality light field rendering on consumer hardware by introducing subpixel-level rasterization with cross-view attribute reuse and view-coherent remapping, achieving significant speedups over prior methods.
Light field displays (LFDs) require rendering an interlaced image that encodes many view-dependent observations. This multi-view requirement introduces substantial computational overhead, making real-time rendering difficult to achieve. While 3D Gaussian Splatting (3DGS) is efficient for single-view rendering on 2D displays, directly extending it to LFDs is computationally expensive. Moreover, prior accelerations either suffer from GPU inefficiency under spatially incoherent subpixel layouts or rely on computationally heavy multi-plane intermediates. In this paper, we propose CoherentRaster, a 3DGS-based light field rendering framework that performs subpixel-level rasterization. Our method employs Cross-view Coherent Attribute Reuse to eliminate redundant computation across neighboring viewpoints and applies View-coherent Remapping to restore warp-level memory efficiency degraded by the interlaced subpixel layout. Together, CoherentRaster provides an efficient pipeline for real-time, high-quality light field synthesis on consumer-grade hardware.