Ensure your depth buffer is selected and matches your resolution. If your depth buffer is inverted, check the RESHADE_DEPTH_INPUT_IS_REVERSED box in the global variable settings. Step 2: Configure RTGI Core Settings
RTGI 0.33 simulates light bouncing and occlusion by tracing rays against the game's depth buffer . Unlike native hardware ray tracing (like in Metro Exodus
Installing and using the shader required a few crucial steps, particularly ensuring the shader could "see" the 3D world. reshade ray tracing shader rtgi 033 2021
Because it cannot see around corners (no BVH structures like RTX cards), it sometimes fails, causing "light leaks" or missing reflections. However, in 2021, version 0.33 introduced a critical improvement: Older versions flickered wildly. Version 0.33 smoothed out the noise, making it feel shockingly close to hardware ray tracing.
If you tell me which game you are playing and your GPU model , I can provide specific settings to balance quality and performance. Share public link Ensure your depth buffer is selected and matches
Test results (1080p, High Quality preset):
Understanding the 3D geometry of the scene. Unlike native hardware ray tracing (like in Metro
Users needed to install ReShade with the "Full Addon Support" version, which is necessary for accessing the depth buffer.
They called it RTGI 033 because people love neat names. To the shader devs on the forum it was just another fork in an endless chain: Reshade, ray tracing, promises and smoke. To Kira it was a quiet revolution hidden in a repository readme and a single build log.
Screen-space reflections and standard rasterized lighting often fail to capture the true depth of modern video game environments. In 2021, graphics programmer Pascal Gilcher revolutionized PC gaming visuals by releasing version 0.33 of his Screen-Space Ray Traced Global Illumination (RTGI) shader for ReShade. This specific iteration finalized crucial performance optimizations and quality filters, making true path-traced lighting accessible in hundreds of legacy and modern DX11, DX12, and Vulkan titles.
RTGI 0.3.3 accurately modeled both soft indirect light (diffuse) and reflections of light sources (specular). Why RTGI 0.3.3 Was a Game Changer in 2021