You cannot find RTGI 0.33 on the official ReShade shader repository (Shadez) anymore. You must find the legacy archive (usually hosted on GitHub or community forums).
Reshade’s RTGI 0.33 (Ray-Traced Global Illumination) is a community shader that simulates real-time global illumination inside Reshade by tracing rays in screen-space and reconstructing indirect lighting. It’s widely used to boost scene depth, color bleeding, and realistic indirect illumination in unsupported engines without native ray tracing. This post summarizes what RTGI 0.33 does, how it works, installation and setup, configuration tips, common trade-offs, and troubleshooting. reshade ray tracing shader rtgi 033
While newer versions like 0.51 have since been released with features like "Sky Color", version 0.33 remains a popular reference point in the community because it was the first to implement the robust motion vector system that bridged the gap between basic screen-space effects and more stable, modern lighting techniques. You cannot find RTGI 0