The developer provides a breakdown of how the shader works, including the transition to "ReSTIR" (Spatiotemporal Importance Resampling) in newer versions, on the Marty's Mods Blog.
The is an exclusive, highly sophisticated script written for ReShade. It simulates path-traced global illumination and ambient occlusion using the data available on your screen (screen-space). Unlike native hardware ray tracing (like Nvidia RTX or AMD DXR), which calculates rays across the entire game world via specialized hardware, RTGI utilizes your GPU to calculate light bounces from objects visible within your current camera view. Key Features of Version 0.33
// Load depth, normal and albedo float depth = g_texDepth.SampleLevel(float4(0, 0, 0, 0), pixelCoord, 0).r; float3 normal = g_texNormal.SampleLevel(float4(0, 0, 0, 0), pixelCoord, 0).rgb; float3 albedo = g_texAlbedo.SampleLevel(float4(0, 0, 0, 0), pixelCoord, 0).rgb;
As you embark on your own journey with RTGI, remember that you are participating in a larger movement—one that brings Hollywood‑style global illumination to the games you already love, all thanks to the vision and dedication of a single developer and the vibrant community that has grown around his work. reshade ray tracing shader rtgi 033 exclusive
between 0.33 and the newer 1.x versions.
. Created by legendary rendering engineer and mathematician Pascal Gilcher (popularly known as "Marty McFly" ), this particular milestone build leverages advanced screen-space ray marching and depth-buffer analysis. By doing so, it introduces physically simulated ambient occlusion, indirect lighting bounces, and rich color bleeding without requiring native engine integration or dedicated hardware RT cores. 🚀 The Core Breakthrough of RTGI 0.33
Because this shader is a third-party modification, it requires a specific installation process through the ReShade setup tool . ReShade 5.3 and RTGI 0.33 Update | August 2022 The developer provides a breakdown of how the
Because RTGI 0.33 and all later versions are exclusive to Patreon backers, there has been a persistent issue of circulating on sites like HighLeaks. These leaks violate Pascal Gilcher’s intellectual property and deprive him of the funding that allows continued development. The official DMCA takedown notices filed by Gilcher demonstrate how seriously he takes this issue.
: Set to 3 or 4 for gameplay; save 7+ strictly for screenshots.
: Simulates realistic light "bounces," allowing light to naturally illuminate surfaces like ceilings and walls that aren't directly hit by a light source. Unlike native hardware ray tracing (like Nvidia RTX
RTGI 0.33 was a major milestone that significantly improved visual stability and accuracy compared to earlier iterations. ReShade 5.3 and RTGI 0.33 Update | August 2022
The free version on GitHub (often labeled ReShade_Private_RTGI_v0.33 ) is usually the "Lite" variant. It lacks the ability to write to the normal buffer, leading to light bleeding through walls.