by Pascal "Marty McFly" Gilcher is a post-processing shader for ReShade that simulates ray-traced lighting. Version 0.33 is a legitimate free release (part of the older open-source period). However, be aware that RTGI v0.33 is outdated — current versions (v0.50+) are paid via Patreon.
RTGI 0.33 provides a practical, free method to approximate global illumination in real-time via ReShade. While not a replacement for true hardware ray tracing, it delivers meaningful visual improvements when configured carefully and used in compatible titles.
Here is the safe method:
RTGI functions as a screen-space effect, utilizing the depth buffer—the "secret ingredient"—to calculate how light should bounce off surfaces within the camera's view.
If you have searched for the term , you are likely looking for the holy grail of realistic lighting without spending $1000 on a new graphics card. This article will explain what RTGI 0.33 is, how to get it for free, how to install it, and how to optimize it for your favorite games. reshade ray tracing shader rtgi 033 free
In the world of PC gaming, "Ray Tracing" has become the golden standard for realistic lighting. However, not everyone owns an NVIDIA RTX or AMD Radeon RX 7000 series GPU. For years, the modding community has relied on a brilliant piece of software: . And within that ecosystem, one shader stands above the rest— Pascal Gilcher’s RTGI (Ray Traced Global Illumination) .
. While the full RTGI shader is paid, alternatives like NVIDIA's SSRTGI or community-driven presets provide free, though less feature-rich, options . For a deep dive into the official RTGI, visit martysmods.com ReShade 5.3 and RTGI 0.33 Update | August 2022 by Pascal "Marty McFly" Gilcher is a post-processing
: It casts rays from light sources across the depth map geometry.