Improving View Independent Rendering: Towards Robust, Practical Multiview Effects

Anonymous

Keywords: Point-Based Rendering, Real-Time Rendering, Sampling and Reconstruction, Shadow Algorithm, Stochastic Sampling, Multiview Rendering

TL;DR: This paper describes improvements to view independent rendering (VIR) designed to make its immediate application to soft shadows more practical, and its future application to other multiview effects more promising.

Abstract: This paper describes improvements to view independent rendering (VIR) designed to make its immediate application to soft shadows more practical, and its future application to other multiview effects such as reflections and depth of field more promising. Realtime rasterizers typically realize multiview effects by rendering a scene from multiple viewpoints, requiring multiple passes over scene geometry. VIR avoids this necessity by crafting a watertight point cloud and rendering it from multiple viewpoints in a single pass. We make VIR immediately more practical with an unbuffered implementation that avoids possible overflows, and improve its potential with more efficient sampling achieved with orthographic projection and stochastic culling. With these improvements, VIR continues to generate higher quality real time soft shadows than percentage-closer soft shadows (PCSS), in comparable time.