Reshade Ray Tracing Shader Rtgi 0.33 [hot] -

RTGI (Ray Traced Global Illumination)

The shader by Pascal Gilcher (Marty McFly) is a post-processing tool for ReShade that simulates path-traced lighting, shadows, and ambient occlusion in almost any DX9, DX11, DX12, or Vulkan game.

Uses the game's depth buffer to ensure light interacts correctly with 3D geometry. 🛠️ Key Technical Requirements Reshade Ray Tracing shader RTGI 0.33

Conclusion: Is RTGI 0.33 Worth It in 2026?

• Realistic indirect lighting: RTGI focuses on simulating how light bounces off surfaces and contributes to the ambient illumination of a scene. This produces richer color bleeding between objects and reduces the flat, unnaturally uniform shading common in many older or stylized engines.
• Screen-space operation: To be broadly compatible and lightweight, RTGI derives its data from rendered frames (depth, normals, and color). That avoids dependence on engine-level geometry or material data and makes the shader usable with most games via Reshade.
• Temporal accumulation and denoising: Because a single frame’s screen-space rays are noisy and incomplete, RTGI accumulates samples over multiple frames and applies filters to reduce flicker and speckling while preserving detail.
• Tunable performance/quality tradeoffs: RTGI exposes settings so users can select faster, blurrier results for weaker hardware or higher-quality, slower modes for powerful systems.