Vaidyanathan, KarthikToth, RobertSalvi, MarcoBoulos, SolomonLefohn, AaronCarsten Dachsbacher and Jacob Munkberg and Jacopo Pantaleoni2013-10-282013-10-282012978-3-905674-41-52079-8679https://doi.org/10.2312/EGGH/HPG12/013-021We present a novel anisotropic sampling algorithm for image space shading which builds upon recent advancements in decoupled sampling for stochastic rasterization pipelines. First, we analyze the frequency content of a pixel in the presence of motion and defocus blur.We use this analysis to derive bounds for the spectrum of a surface defined over a two-dimensional and motion-aligned shading space. Second, we present a simple algorithm that uses the new frequency bounds to reduce the number of shaded quads and the size of decoupling cache respectively by 2X and 16X, while largely preserving image detail and minimizing additional aliasing.Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-Color, shading, shadowing, and texture