Efficient Virtual Shadow Maps for Many Lights

Ola Olsson, Erik Sintorn, Viktor Kampe, Markus Billeter, Ulf Assarsson
Chalmers University of Technology
ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, 2014


   title={Real-Time Shading and Accurate Shadows Using GPGPU Techniques},

   author={Olsson, Ola},


   school={Chalmers University of Technology}


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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.
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