RTGI is the work of , a German rendering engineer, artist and mathematician who operates under the online name “Marty McFly”. Gilcher is not an unknown figure; his RTGI shader became so successful that NVIDIA adopted its core technique into GeForce Experience’s Freestyle suite (as “SSRTGI”).
Before 2021, most "fake ray tracing" shaders were simply screen-space reflections. changed the game by implementing a hybrid approach: screen-space ray marching combined with depth buffer information to create plausible light bounces.
If you have this file and are trying to configure it for a balance of visuals and performance, try these settings within the ReShade UI: reshade ray tracing shader rtgi 033 2021
ReShade RTGI 0.33 proved that ray tracing’s visual appeal – soft shadows, color bleeding, and ambient occlusion – could be approximated without specialized hardware or engine support. For budget PC gamers and retro-modding enthusiasts in 2021, it turned old favorites into something that looked almost next-gen. And while modern games have since integrated hardware RT widely, RTGI 0.33 stands as a testament to what a single dedicated developer can achieve with clever screen-space algorithms and an open-source injection framework.
Even years after its initial 2021 release, the RTGI 0.33 shader remains a benchmark tool for PC gaming enthusiasts. It breathes vibrant new life into classic titles like The Witcher 3 (pre-next-gen patch), Skyrim , Grand Theft Auto V , and Dark Souls III . By carefully balancing the ray count and leveraging the robust 0.33 denoiser, you can transform flat, dated graphics into highly dynamic, atmospheric worlds without needing a brand-new, top-tier graphics card. RTGI is the work of , a German
| Feature | Specification | |---------|----------------| | | SM 5.0+ | | Ray Tracing Method | Hierarchical screen-space ray marching (Hi-Z) | | Input Buffers | Color, Depth, Normal (ReShade depth buffer, reconstructed normals) | | Bounces | 1 indirect bounce (simulated) | | Ray Count per Pixel | Variable: 2–6 (performance vs. quality) | | Denoiser | Spatiotemporal (bilateral + temporal accumulation) | | API Support | DirectX 9–12, OpenGL, Vulkan (via ReShade bridge) |
The RTGI_033 team's achievement marked a significant milestone in the evolution of real-time graphics. Their work had not only pushed the boundaries of what was thought possible but had also democratized access to advanced graphics techniques. The shader became a benchmark for future developments, inspiring others to explore the vast possibilities of ray tracing and global illumination. changed the game by implementing a hybrid approach:
Kira walked slowly, enjoying the new information. A doorway that had seemed unremarkable now glowed at its threshold. Shadows unfolded as if the world beneath the texture maps had finally exhaled. The shader's subtle errors were charming: occasional speckled noise like film grain, ghostly smears where the algorithm misread a transparent surface. It felt handcrafted, a code-smith’s flavor rather than corporate polish.
The version, released in late 2021, stands out as a landmark update. It introduced massive performance optimizations and image quality improvements, making real-time ray tracing accessible to a wider range of hardware. What is ReShade RTGI 0.33?