Reshade Ray Tracing Shader Rtgi 0.33 ((exclusive)) Instant

RTGI stands for "Ray-Traced Global Illumination," a post-processing shader for the popular ReShade injection tool. Created by rendering engineer Pascal Gilcher (also known as Marty McFly), the RTGI shader has become a gold standard for improving in-game lighting. It is designed to simulate realistic light bounces (diffuse and specular illumination) within the game’s environment without needing an actual RTX graphics card.

Use ReShade 5.0 or higher (the add-on support version is highly recommended for offline games to guarantee depth buffer access).

Choose the correct rendering API (usually DirectX 11 or DirectX 12 for modern games).

What it does well

Run the setup and select your game file.

Light carries color data from one surface to another. Standing next to a red wall causes a subtle red glow to cast onto your character's armor.

High values enable true global illumination where entire rooms bounce colored light, but this increases performance cost. Ray Amount (Quality Steps) Reshade Ray Tracing shader RTGI 0.33

A: Possibly, but at 15 FPS. You need a dedicated GPU with at least 4GB of VRAM.

To appreciate version 0.33, you must understand how a post-processing shader achieves what used to require dedicated RT cores:

Let’s be real: RTGI costs FPS. On an RTX 3060 at 1440p: Use ReShade 5

| Feature | RTGI 0.33 | NVIDIA RTXDI (Path Tracing) | AMD FSR 3 + Native GI | | :--- | :--- | :--- | :--- | | | GTX 900 series + | RTX 2060+ (Struggles) / 4070+ | RX 6000+ | | Accuracy | Medium (Screen Space) | High (World Space) | Medium-High | | Installation | 10 minutes (Manual) | Built-in to game | Built-in to game | | Ghosting | Moderate (TAA) | Low (DLSS 3.5 Ray Reconstruction) | High (FSR 2.2) | | Best Use Case | Old DX9/DX11 games | New AAA releases | Cross-platform indie games |

To appreciate RTGI 0.33, it helps to understand how it differs from native ray tracing hardware solutions like Nvidia RTX or AMD Radeon RX technologies. Native Ray Tracing vs. ReShade RTGI

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. Light carries color data from one surface to another

: Like its predecessors, RTGI 0.33 functions by "scraping" a game's depth buffer to understand the 3D structure of a scene. It then shoots virtual rays within that space to calculate how light should bounce off surfaces.