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.

翻译：光场显示（LFDs）需要渲染编码多个视点观测的隔行交织图像。这种多视点需求带来了巨大的计算开销，使得实时渲染难以实现。尽管三维高斯泼溅（3DGS）在二维显示器的单视点渲染中表现高效，但直接将其扩展到光场显示会带来高昂的计算成本。此外，现有加速方法要么在空间非相干子像素布局下受限于GPU低效，要么依赖计算繁重的多平面中间表示。本文提出CoherentRaster，一种基于三维高斯泼溅的光场渲染框架，能够执行子像素级光栅化。该方法采用跨视点相干属性复用（Cross-view Coherent Attribute Reuse）消除相邻视点间的冗余计算，并应用视点相干重映射（View-coherent Remapping）恢复因隔行子像素布局而降低的线程束级内存效率。通过协同设计，CoherentRaster在消费级硬件上实现了实时、高质量光场合成的流水线。