RTGI 0.33 is a "Screen Space" ray tracing shader. Unlike native hardware-accelerated ray tracing, which calculates light rays interacting with every triangle in a 3D scene, RTGI uses the game’s and color information to "ray march" across the screen.
Run the ReShade installer and select your game's executable ( .exe ).
Ultimately, RTGI 0.33 is more than just a visual mod; it is a testament to the power of community-driven software, proving that sophisticated lighting physics can be democratized and applied to the vast library of gaming history.
Conclusion RTGI 0.33 is a powerful ReShade shader offering a practical balance between visual improvement and performance cost. It’s most effective in static or slowly changing scenes where temporal accumulation can remove noise, and when properly tuned to the target hardware and game. Expect screen-space artifacts and simplified lighting behavior compared with true hardware ray tracing, but significant aesthetic gains for many titles.
The shader transforms scenes by adding depth and realistic color interaction. Global Illumination:
The RTGI shader is a premium mod. You can legally acquire version 0.33 by subscribing to Pascal Gilcher's Patreon page.
Go to the preprocessor definitions and look for RTGI_RENDER_SCALE . Setting this to 0.5 or 0.7 renders the ray tracing at a lower resolution while keeping your game crisp. Version 0.33's denoiser will upscale the lighting seamlessly.
While screen-space solutions are typically limited to a single light bounce, 0.33 utilizes an approximation algorithm to simulate multiple light bounces. This prevents dark corners from looking pitch black and creates a softer, more realistic distribution of light.
Navigate to your game’s root directory (where the .exe is located). You should see a folder named reshade-shaders .
Visual impact