Rtgi Shader |link| Free Download |link| Free May 2026
The Ray Traced Global Illumination (RTGI) shader, developed by Pascal "Marty McFly" Gilcher, is a post-processing tool for ReShade that adds dynamic lighting and shadows to games. While the high-end iMMERSE Pro: RTGI version is officially a paid shader available via Marty's Mods Patreon, there are legitimate ways to access similar effects for free or through official driver features. Legitimate "Free" RTGI Options
iMMERSE Standard Suite: Includes advanced effects like MXAO (Ambient Occlusion) and sharpeners that are included in the standard ReShade installer or available on GitHub. rtgi shader free download free
Features: Physically simulates light bouncing off surfaces, improving lighting and shadows in real-time for almost any game with depth buffer access. 2. Free Alternatives & Public Shaders The Ray Traced Global Illumination (RTGI) shader, developed
How to set it up:
Final Checklist: Is Your Download Safe?
Before you click that "Download Now" button on any site offering RTGI for free, ask yourself: Gilcher, P
References
- Gilcher, P. (2024). The State of ReShade Ray Tracing. Patreon Post #42.
- Microsoft. (2023). Analysis of DLL Sideloading in Gaming Mods. Windows Defender Research Report.
- OpenRT. (2025). Performance metrics of Screen-Space vs. Hardware-Accelerated GI. Journal of Graphics Tools, 19(3), 45-60.
Add the Shader: Once ReShade is installed, you will need to drop your downloaded RTGI .fx files into the reshade-shaders/Shaders folder within your game directory.
