In version 0.16.8, the stained-glass lamp on the end table would create a puddle of red on the carpet, but nothing else. A flat, dead puddle. Now, she held her breath. The red light splashed onto the carpet, then bloomed —a soft, pink echo bleeding onto the leg of the piano, a warm orange kiss on the spine of a book. Indirect lighting stability. The patch notes had called it a “fix.” Elara called it a resurrection.
RTGI cannot see the sides or backs of objects that are not visible to the camera—it must estimate how far objects extend beyond their visible surfaces. The parameter controls this estimation. The default value is 0.250 , which works well for many games. However, optimal values vary significantly: games with thin objects (like foliage) typically need lower values, while games with solid, thick geometry may benefit from higher numbers.
Users can adjust ray length, sampling counts, color boosting, and temporal jittering to balance performance and quality.
Standard video games historically baked ambient lighting into texture files or utilized coarse ambient probes. RTGI 0.17.0.2 introduces dynamic . If a player character stands next to a brightly lit neon red wall, the light rays bounce off that wall and bleed realistic red hues onto the character's clothing and the surrounding floor. Screen-Space Limitations
Because the algorithm operates within screen space, it possesses specific constraints inherent to post-processing: rtgi 0.17.0.2
If you set the value too high, you will notice . Too low, and shadows will appear weak or missing entirely.
Looking to the future, Pascal has announced plans to split RTGI's diffuse and specular components into two separate shaders, noting that "managing both within a single pipeline has become increasingly difficult as complexity grows". This separation will give users even finer control over their lighting effects while simplifying the internal code structure.
The update improves how the shader reads the game’s depth map. This reduces visual bugs where lighting would unexpectedly clip through solid objects or UI elements, resulting in a cleaner presentation. How RTGI Transforms Game Visuals
It shines in games with complex lighting environments, such as shooters, RPGs, and simulators, where lighting dramatically affects immersion. Conclusion In version 0
The architecture of RTGI 0.17.0.2 relies on rendering data extracted directly from the software execution pipeline. Unlike native hardware-accelerated ray tracing (such as NVIDIA RTX or AMD DXR) which utilizes dedicated BVH (Bounding Volume Hierarchy) structures built from true 3D scene geometry, RTGI functions strictly within .
The shader by Pascal Gilcher (Marty McFly) is a popular ReShade plugin that adds software-based ray tracing to older games. Version 0.17.0.2 is a specific release that focused on stability and compatibility with newer versions of ReShade.
The RTGI 0.17.0.2 release helped solidify screen-space ray tracing as a viable middle-ground between no ray tracing and hardware-heavy native ray tracing. It allowed users to breathe new life into older classics like The Witcher 3 , Grand Theft Auto V , or The Elder Scrolls V: Skyrim .
More recently, a mod for Stellar Blade adds RTGI along with ambient light correction and depth‑based sharpening. The installation process follows the same ReShade workflow described above: download the preset, extract the files into the game's executable directory, install ReShade with DirectX support, and activate the preset. The red light splashed onto the carpet, then
The release of marks a significant milestone in the world of post-processing ray tracing. This update is not merely a bug-fix patch; it represents a refined approach to how screen-space ray tracing can mimic path-traced global illumination without requiring native hardware acceleration.
This version was released through Pascal Gilcher’s Patreon, which provides early access to experimental, high-quality shader features.
0.17.0.2 integrates seamlessly with existing ReShade presets, allowing users to combine it with bloom, color correction, and SMAA/FXAA. Installing and Using RTGI 0.17.0.2