Rtgi 0.33 | Reshade Ray Tracing Shader

At its core, RTGI (Ray Traced Global Illumination) works by utilizing the "depth buffer" of a game to simulate how light rays interact with the visible environment. Unlike traditional Screen Space Ambient Occlusion (SSAO), which merely adds contact shadows, RTGI calculates how light bounces off surfaces. This means a red rug in a game will naturally "bleed" its color onto the bottom of a nearby white wall—a phenomenon known as . Key Improvements in Version 0.33

For optimal performance, it is highly recommended to . RTGI replaces these functions with higher-quality versions. Having both enabled causes conflicts in the depth map and consumes extra GPU resources unnecessarily.

Download the latest version of ReShade from the official website. Run the installer, select your game's executable file (e.g., the .exe ), and choose the rendering API the game uses (usually DirectX 10/11/12 or Vulkan). During the initial setup, you can opt to install the basic shader packs, but do not install the RTGI shader from the ReShade repository—you will use your purchased copy instead. Reshade Ray Tracing shader RTGI 0.33

Select the correct rendering API (usually DirectX 11, DirectX 12, or Vulkan).

: Run the ReShade installer, select your game's .exe , and choose the correct API (usually DirectX 11 or 12). When asked to select effect packages, ensure "Addon" support is enabled if you are playing a single-player game (this helps with depth buffer detection). Add RTGI Files : Open your game's installation folder (where the .exe is). Find the reshade-shaders folder. Copy the RTGI.fx file into the Shaders subfolder. At its core, RTGI (Ray Traced Global Illumination)

Conclusion RTGI 0.33 is a thoughtful incremental update that improves visual quality and stability while remaining practical for many users. It delivers richer indirect lighting through smart sample management, better temporal handling, and refined denoising — all without requiring hardware ray tracing. For players seeking a notable boost in realism with configurable performance options, RTGI 0.33 is a strong choice that demonstrates how screen-space GI techniques can meaningfully elevate the look of older and newer games alike.

Version 0.33 was a "golden era" release, known for stability. However, more recent updates (0.36+) have built upon 0.33’s foundation with massive leaps. Here is what RTGI brings to the table, covering the 0.33 release as well as the future evolutions of the shader. Key Improvements in Version 0

While earlier versions focused on diffuse light, later iterations (following the 0.33 lineage) introduced "HiZ Min-Max Tracing" for reflections. This allows the shader to trace "pixel-perfect paths" for specular reflections, making shiny surfaces look sharp.