Reshade Ray Tracing Shader Rtgi 033 Free Official

RTGI is a shader that runs through the ReShade post-processing injector. Unlike native ray tracing (DXR), which calculates geometry and lighting at the engine level during rendering, RTGI works by analyzing the final image rendered by the game engine (color, depth, and normals).

While newer paid versions exist, v0.33 remains a milestone release because it introduced several features that bridged the gap between fake lighting effects and true simulation:

ReShade_RTGI_v0.33.fx (or packaged as RTGI.zip) reshade ray tracing shader rtgi 033 free

Let’s be realistic. RTGI 0.33 is screen-space. That means it only affects what you can see on the monitor. If you turn the camera away from a light source, the bounce light might disappear. True hardware RT (like in Cyberpunk 2077’s Psycho mode) is world-space and path-traced.

However: For a free tool that runs on almost any GPU from the last 8 years, RTGI 0.33 is a miracle. In static screenshots, it is often indistinguishable from RTX 20-series ray tracing. RTGI is a shader that runs through the

Version 0.33 has circulated widely on forums and file-sharing sites. While older versions of the shader were eventually released publicly by the author, the distribution of specific paid versions without permission is a violation of the creator's distribution license. From a technical standpoint, v0.33 is often preferred by users with mid-range hardware because it is lighter than the v0.40+ Path Traced versions, which require significantly more VRAM and computational power.

| Feature | Status in v0.33 (Free) | |---------|------------------------| | Ray-traced indirect lighting | ✅ Yes | | AO blending | ✅ Basic | | Multiple bounce options | ❌ Limited (1 bounce) | | Denoising quality | ⚠️ Older, noisier | | Performance | ⚠️ Less optimized than 0.50+ | | UI preset system | ❌ No | | Temporal stability | ❌ Lower | Works best in: Third-person games (Witcher 3, GTA

Why v0.33 is free: Marty released early versions (up to 0.33) as free/open-source under GPL. Later versions became Patreon-exclusive due to development complexity.

Works best in:
Third-person games (Witcher 3, GTA V, Skyrim, Cyberpunk 2077 pre-DLSS 3.5), older titles lacking modern lighting.

Common issues:

ENB binaries are heavy. RTGI 0.33 replaces the need for complex ENB lighting. The inns of Whiterun suddenly feel warm, and Nordic ruins have realistic shadow crawl.