Reshade Ray Tracing Shader Rtgi 0.33 |verified| 👑 🔖

Performance guidance

, is a major update that introduced significant features like motion vectors

The primary goal of the RTGI shader is to simulate and ambient occlusion . In practical terms, this transforms the atmosphere of older titles:

But what makes version 0.33 so special? Is it actually "ray tracing"? And how can you install it without frying your GPU? This article dives deep into the technical nuances, performance impact, and the best games to resurrect using this shader. Reshade Ray Tracing shader RTGI 0.33

What it does well

Screen-Space Ray Traced Global Illumination (RTGI) transforms old PC games into modern visual masterpieces. Developed by Pascal Gilcher (Marty McFly), the RTGI shader for ReShade brings path-traced lighting, ambient occlusion, and realistic reflections to games without native ray tracing support. Version 0.33 introduces significant performance optimizations and image quality improvements. What is ReShade RTGI 0.33?

Keep this around 0.85 . It ensures fast-moving frames blend efficiently to mask noise, though setting it too high causes a slight "ghosting" trailing effect behind moving objects. Screen-Space Limitations to Keep in Mind Performance guidance , is a major update that

Traditional game engines use pre-baked lightmaps or screen-space ambient occlusion (SSAO) to simulate depth and shadow. RTGI 0.33 bypasses these approximations by calculating real-time ray-traced global illumination using the hardware's depth buffer. The Screen-Space Limitation

Like any powerful tool, RTGI 0.33 isn't without its quirks. The community feedback on the RTGI shader series, including 0.33, is generally positive but highlights a few common issues.

Reuses lighting data from previous frames to smooth out noise. Set this higher to eliminate flickering, or lower if you notice ghosting during fast movements. Performance Troubleshooting And how can you install it without frying your GPU

Always install RTGI last . If you install other shaders (like MXAO or Clarity) after RTGI 0.33, they can overwrite the depth buffer access.

Performance with RTGI 0.33 is surprisingly manageable. It has been tested successfully on a massive range of hardware—from modern RTX 3070s down to GTX 1050s and even old Radeon HD 6770M mobile chips. The community reports that the shader squeezes realistic lighting into milliseconds of compute time. However, it is not performance-free. On slower hardware, enabling RTGI may lead to visible noise or a slight shimmering effect during motion, which is the "cost" of the Monte Carlo sampling.

The RTGI shader uses a technique called . It utilizes the game's depth buffer—the 3D data the game engine uses to determine which objects are in front of others—to cast rays and calculate how light bounces off surfaces. Unlike native DXR (DirectX Raytracing), RTGI does not require specialized RT cores, meaning it can run on a wide variety of hardware from both NVIDIA and AMD. What’s New in Version 0.33?