More Efficient Virtual Shadow Maps for Many Lights

Ola Olsson; Markus Billeter; Erik Sintorn; Viktor Kämpe; Ulf Assarsson

doi:10.1109/TVCG.2015.2418772

More Efficient Virtual Shadow Maps for Many Lights
Artikel i vetenskaplig tidskrift, 2015

Recently, several algorithms have been introduced that enable real-time performance for many lights in applications such as games. In this paper, we explore the use of hardware-supported virtual cube-map shadows to efficiently implement high-quality shadows from hundreds of light sources in real time and within a bounded memory footprint. In addition, we explore the utility of ray tracing for shadows from many lights and present a hybrid algorithm combining ray tracing with cube maps to exploit their respective strengths. Our solution supports real-time performance with hundreds of lights in fully dynamic high-detail scenes.