If you want modern RTGI without screen-space limits, use ReSTIR or Path Tracing in actual game engines (UE5, Cyberpunk PT).
RTGI (Real-Time Global Illumination) is an open-source real-time lighting system used primarily in graphics engines and renderers to approximate global illumination effects at interactive frame rates. Version 0.17.0.2 is a patch/minor release focused on stability, small feature additions, and fixes.
Use a scene with both mirror-like floors and rough walls. Check: rtgi 0.17.0.2
If you meant a different kind of feature (e.g., a modding API, a C++ library, or a game engine plugin called rtgi), please clarify and I’ll adjust the answer.
The most noticeable improvement is the temporal denoiser. In previous 0.17 builds, moving the camera quickly would leave a trail of "light smudges" (ghosting). RTGI 0.17.0.2 introduces a new Temporal Variance Clipping parameter. This allows the shader to reject outdated ray samples more aggressively, resulting in cleaner motion. If you want modern RTGI without screen-space limits,
The primary reason gamers install RTGI 0.17.0.2 is for the dramatic visual overhaul often described as the "Halo Effect."
In games like The Witcher 3, Grand Theft Auto V, or Skyrim, the shader does more than just add shadows. It unifies the visual style. Dark corners stay dark until light hits them. Neon signs in a cyberpunk city reflect off wet pavement accurately. The "flatness" of a 2015-era video game is suddenly given depth. If you meant a different kind of feature (e
For many users, 0.17.0.2 hits the "sweet spot" of visual upgrade versus performance cost, making it a favorite version for those recording cinematics or taking virtual photography.
⚠️ Do not use with older ReShade 4.x – missing math functions.
RTGI 0.17.0.2 is heavy – expect 20–40% FPS drop at 1080p with bounce count=2.
Performance tips: