Accelerating radiosity on GPUs

Abstract

We propose a novel approach to implement radiosity on GPU with specific optimizations via form-factor matrix transformations. The proposed transformations enable to reduce the amount of computations for multiple-bounce global illumination and apply DXT compression (with subsequent hardware decompression when reading formfactors on GPU). Our implementation is 10 times faster running and requires 3 times less memory than the naive radiosity GPU implementation.