For RTGI to calculate light bounces, it must read the game's depth.
By downloading and installing Quint RTGI.fx, you can experience the power of real-time global illumination for yourself. Join the community of developers who are already pushing the boundaries of what is possible with this innovative technology.
RTGI uses a denoiser to smooth out the grainy look of raw ray tracing. Set this to High to keep the lighting looking smooth without needing to crank up the raw Ray Amount.
| Setting | What it Does | Performance Impact | | :--- | :--- | :--- | | | Determines how far light rays travel. Longer rays create more bounce light but are more costly. | High | | Amount of Rays | The number of rays cast per pixel. More rays mean a more accurate and less noisy image. | Very High | | Ray Step Rate | (Often found in experimental options). Controls the resolution at which rays are calculated. | Extreme |
Move the downloaded RTGI.fx file into the Shaders subfolder. Quint Rtgi.fx Download
Countless ReShade presets rely on it as a base, including "Radiance Reshade," "Hysh Reshade," "Schedule Realism," and many more. It turns flat, pre-baked lighting into a dynamic, living environment. For many PC gamers, once you've played a game with a properly tuned RTGI shader, it's very hard to go back.
Select the correct rendering API for your game (DirectX 9, DirectX 11, DirectX 12, or Vulkan).
For RTGI to work, ReShade must be able to read your game's depth map. Launch your game.
Locate or q_RTGI in the list and check the box to enable it. For RTGI to calculate light bounces, it must
The RTGI.fx shader is typically available through the creator's Patreon page , as it is a premium shader. ReShade RTGI | Ray Traced Global Illumination
If the depth map appears upside down or inverted, go back to the tab, look at the global edit variables at the bottom, and toggle RESHADE_DEPTH_IS_REVERSED or RESHADE_DEPTH_INPUT_IS_UPSIDE_DOWN between 0 and 1 .
Unlike standard open-source shaders, RTGI is primarily distributed through a Patreon-supported model Official Source: You can find the latest versions and support on the Marty McFly Patreon Discord Access:
Unlike hardware-based ray tracing (like NVIDIA RTX or AMD DXR) which calculates light paths across an entire 3D scene using dedicated hardware cores, RTGI works via . It analyzes the depth buffer data already being rendered on your screen to simulate how light bounces off surfaces, casts realistic shadows, and creates accurate ambient occlusion. Key Visual Benefits RTGI uses a denoiser to smooth out the
Locate your game's installation folder (where the game's executable resides). You will see a folder named reshade-shaders . Open reshade-shaders →right arrow Shaders and drop the qUINT_rtgi.fx file inside. Open reshade-shaders →right arrow
The (Ray Traced Global Illumination) is a shader written in the ReShade FX language. It physically simulates how light bounces off surfaces in real-time, providing:
Copy and paste both qUINT_rtgi.fx and qUINT_rtgi.fxh directly into the Shaders folder. Step 3: Configure the Depth Buffer
A dedicated gaming graphics card (Nvidia GTX 1070 / AMD RX 580 or higher is recommended for playable frame rates).