Large-Scale Global Illumination at Activision

In this talk, we’ll describe the key techniques behind the large-scale global illumination system in Activision. Part of the SIGGRAPH 2021 Advances in Real-Time Rendering in Games course (http://advances.realtimerendering.com/). 

We present a new precomputed lighting compression technique that enables high-performance and seamless reconstruction directly from the compressed lighting data. In addition, we’ll discuss visibility-based sampling of precomputed volumetric lighting and describe a practical method for computing constrained spherical harmonics representations.