It uses the game's depth buffer to understand the 3D layout of a scene, allowing for accurate light occlusion and depth-of-field effects.
: Search for "RTGI" in the ReShade technique list and enable it. You can then adjust settings like Ray Length Amount of Rays Focal Depth to balance visual quality with your frame rate. Pro Tips for the Best Results How To ReShade RTGI - Install and Adjust Reshade Rtgi 0.36.1