To appreciate the updates in 0.17.0.2, it helps to understand the core architecture of RTXGI, which relies on a decoupled, two-step structure:
The algorithm for calculating how colored light reflects onto surrounding surfaces (e.g., a red wall casting a faint red tint onto a white floor) was refined for a more natural, subtle look.
In practice, this means that large, brightly lit areas that contribute no meaningful occlusion are skipped entirely. By processing only regions where occlusion is present, the shader saves a considerable amount of performance. Gilcher noted that the performance gain is particularly noticeable when using low radii or high-quality presets. rtgi 0.17.0.2 release
Tip: Pair RTGI with ReShade's built-in upscale filters or game-level DLSS/FSR to reclaim lost frames. How to Install RTGI 0.17.0.2
Open the ReShade menu (Home key), search for "RTGI" or "McFly", and check the box. To appreciate the updates in 0
: While it uses ray tracing techniques, it runs on the software level via
RTGI, or Real-Time Global Illumination, is a technology that enables the simulation of indirect lighting in 3D environments. Unlike traditional lighting methods, which rely on pre-baked lightmaps or simplistic approximations, RTGI accurately models the way light interacts with objects and surfaces in a scene. This results in more realistic and dynamic lighting, which is essential for creating an immersive experience in games, simulations, and other interactive applications. Gilcher noted that the performance gain is particularly
The shader allows players to tweak parameters like ray length, ray steps, and color intensity to suit their performance needs and aesthetic preferences. Installation and Usage