Prutkin, RomanKaplanyan, AntonDachsbacher, CarstenCarlos Andujar and Enrico Puppo2013-11-082013-11-0820121017-4656https://doi.org/10.2312/conf/EG2012/short/009-012We present a method for real-time clustering of VPLs obtained from Reflective Shadow Maps (RSM). The clusters are treated as area light sources and used to approximate indirect illumination. The spatial extent of a cluster is used to deduce the shape and size of the respective area light source. Our method is fully GPU-based and avoids flickering by temporally coherent reinitialization of the clustering. It also incorporates importance sampling for view-dependent clustering. We show visually indistinguishable results of indirect illumination with only a fraction of secondary light sources.Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/ImageGeneration-Display algorithms I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-Shading