The update, released by Pascal Gilcher (Marty McFly) in August 2022, serves as a significant technical bridge between standard screen-space effects and full ray tracing. Technical Summary
The acronym stands for Ray Traced Global Illumination . It functions within the ReShade post-processing injector to extract depth information directly from the game engine. It then traces rays across those surfaces to calculate bounce lighting and ambient occlusion.
RTGI 0.33 relies heavily on "Temporal Accumulation" (using previous frames to smooth out the image). Reshade Ray Tracing shader RTGI 0.33
Enter —a version number that has become legendary among modders, retro-gamers, and optimization junkies. While NVIDIA’s DLSS 3.5 and AMD’s FSR 3 dominate headlines, this specific shader version (0.33) of Marty McFly’s RTGI (ReSTAR DI) remains the gold standard for adding global illumination to games that never had it.
| Problem | Cause | The Fix | | :--- | :--- | :--- | | | Low temporal samples | Increase game TAA sharpness. Ensure you are running at a stable framerate (fluctuating FPS breaks the temporal accumulation). | | Light "swimming" / Flickering | Aggressive motion | Lower the Radius . Large radii are unstable during camera movement. | | Everything is dark | Exposure mismatch | Use GI Brightness or Post Bloom brightness. Avoid using Bounce Intensity to brighten the scene; it looks fake. | | Washed out colors | Saturation too high | Lower GI Saturation . Real GI is subtle; it shouldn't look like a neon paint spill. | The update, released by Pascal Gilcher (Marty McFly)
Note: This shader is Patreon-exclusive software. Ensure you are supporting the developer for access to the latest builds and bug fixes.
If you're interested in trying out RTGI 0.33, here's a step-by-step guide to get you started: It then traces rays across those surfaces to
It provides highly detailed contact shadows in corners and crevices where light would naturally be blocked. Key Features in Version 0.33
