The secret is out. You can use ReShade to inject Ray Traced Global Illumination into almost ANY game.
: RTShade is a free, public ray tracing shader available on GitHub that mimics some of these effects. Step-by-Step Installation Guide rtgi free download
✅ 1️⃣ ReShade (Free injector) 2️⃣ RTGI Shader Files (Search Pascal Gilcher’s legacy files or community repos) The secret is out
In this guide, I’m going to show you how to add Ray Traced Global Illumination (RTGI) to games that don't even support it—like The Witcher 3 (Classic) , GTA V , or older titles—all for zero cost. This is best suited for mid-to-high-end GPUs
Real-time ray tracing is heavy. Even with the free shader method, you will see a drop in frames. This is best suited for mid-to-high-end GPUs.
While NVIDIA charges a premium for DLSS and RTX implementation, the modding community has democratized the tech. The most popular method involves using ReShade , a post-processing injector, combined with specific RTGI shader files.