Setting up an RTGI shader requires ReShade. Follow these steps to get it running in your favorite game: Step 1: Download and Install ReShade
For the shader to calculate light correctly, it needs access to your game's depth buffer.
To get the authentic, secure, and free version of the RTGI shader, you should always utilize official repositories and the standard ReShade installation pipeline. Step 1: Download and Install ReShade Visit the official ReShade website. rtgi shader free download free
Locate the Shaders folder (containing .fx files) and the Textures folder.
Light reflects from bright surfaces onto dark corners. Setting up an RTGI shader requires ReShade
: Turn off the game's built-in Ambient Occlusion to avoid duplicate processing. Safe Downloading Practices
Do you need help where the shader bleeds through menus? Step 1: Download and Install ReShade Visit the
Inside the RTGI shader settings at the bottom of the ReShade overlay, locate the "Ray Count" or "Sample Count" slider. Lowering this from high to medium can save up to 15–20% of your performance with minimal loss in visual quality.
During the ReShade installation setup, you will see a list of effect packages.
Recent updates (circa June 2025) have significantly improved this technology. For example, the latest "Supercharged" RTGI update introduced advanced algorithms like for pixel-perfect path reflections, which allows older games to feature lighting solutions that rival modern, fully path-traced titles.