For gamers with older hardware (GTX 10-series or RX 5000-series), this is the closest you will ever get to the "RTX On" experience. For games like Fallout: New Vegas , Mass Effect Legendary Edition , or Final Fantasy XIV , RTGI 0.33 flattens the lighting and adds a volumetric depth that the original engines simply could not produce.
In the world of PC gaming, few tools have bridged the gap between aging graphics APIs and modern rendering techniques quite like ReShade. While hardware-based ray tracing (RTX) remains locked behind NVIDIA’s Turing architecture and newer, a quiet revolution has been happening in the modding scene. At the forefront is Pascal "Marty McFly" Gilcher’s Ray Traced Global Illumination (RTGI) shader. Reshade Ray Tracing shader RTGI 0.33
If you haven't tried RTGI since 2021, version 0.33 is the reason to resubscribe. It turns flat rasterized worlds into moody, photorealistic environments—without needing a $1,000 graphics card. Disclaimer: RTGI is a paid shader via Patreon (usually $5+ tier). This supports the developer, Marty McFly, who pioneered real-time software ray tracing long before NVIDIA made it a buzzword. For gamers with older hardware (GTX 10-series or
With the release of , the gap between software-based ray tracing and native hardware acceleration has never felt smaller. This isn't just an incremental update; it is a refinement that turns a "toy" into a legitimate production tool for screenshot artists and immersion junkies alike. What is RTGI? For the uninitiated, RTGI is a proprietary shader for ReShade that adds realistic light bouncing to games that were never designed to have it. While standard screen-space ambient occlusion (SSAO) only darkens crevices, RTGI simulates how light photons scatter off surfaces, carrying color with them. While hardware-based ray tracing (RTX) remains locked behind