Rtgi 0.17.0.2 Release |top| Direct
If you were happy with 0.16, 0.17.0.2 is a clear improvement in temporal stability. If you expected path tracing quality, you’re misunderstanding the shader’s scope.
Before diving into the specifics of this release, it is essential to understand what RTGI is and why it is so important. RTGI is a post-processing shader for ReShade, an injection tool that applies various visual effects to games in real-time. Unlike traditional game lighting, which is largely pre-baked or relies on screen-space approximations like Ambient Occlusion (SSAO), RTGI physically simulates how light bounces around a scene. It accurately models both diffuse and specular global illumination, resulting in lighting that is not only dynamic but also incredibly temporally stable, minimising common issues like flickering or lag.
The 2–5% uplift on NVIDIA Turing+ is real but subtle. More importantly, is improved. The old stutter when temporal accumulation resets (e.g., after a loading screen or cutscene) is almost gone. On AMD, the crash fix for depth buffer toggling is a lifesaver—no more CTDs when alt-tabbing.
The highlight of this release is a complete rewrite of the entire sampling code. This was not a minor tweak but a fundamental re-engineering of how the shader collects light samples. According to the developer, this rewrite achieved the same visual quality as previous versions but with fewer samples. rtgi 0.17.0.2 release
: This specific beta branch aimed to make the shader more accessible for users with mid-range GPUs, as RTGI is traditionally very resource-intensive.
The results of the ray tracing pass are integrated into the probe grid. This is w17.0.2 does its heavy lifting, using exponential moving averages and advanced geometric weight filters to smoothly update the probes over time without visual flickering.
The second major feature was the introduction of a . This innovative technique renders Ambient Occlusion (AO) at a much lower resolution first. It then uses this low-resolution data to intelligently determine which areas of the frame actually require the full, computationally expensive AO computation. If you were happy with 0
: Streamlined code execution to lower the frame-time cost, making the shader more viable for mid-range GPUs. Enhanced Infinite Bounce Logic
Compatibility and Platform Notes
Install a compatible version of ReShade (often version 4.9.1 or higher was used for this build). RTGI is a post-processing shader for ReShade, an
The release is a significant historical update for the ReShade Ray Traced Global Illumination shader , created by Pascal Gilcher (also known as Marty McFly ).
The was more than just a "beta update"; it was a declaration of intent. It proved that you did not need an expensive RTX graphics card to experience the magic of real-time global illumination. By fixing the light leaking issues, capturing tiny surface details, and stabilizing the temporal performance, Pascal "Marty McFly" Gilcher pushed the boundaries of what modding could achieve.