ReShade is a popular, open-source post-processing injector that allows users to enhance the visual fidelity of their favorite games and applications. Developed by Boris Vorontsov, ReShade provides a flexible framework for injecting custom shaders into a wide range of titles, enabling users to apply various graphical effects, from simple tweaks to complex, compute-intensive transformations.
Unlike newer pathtracers, v0.33 uses a technique. It is sensitive to quality settings. reshade ray tracing shader rtgi 033