Reshade Ray Tracing Shader Rtgi 033 Exclusive May 2026

  • Example compute shader kernel signatures and buffer layouts (HLSL-like): 
    RWTexture2D<float4> RW_Irradiance; // xyzw: irradiance.rgb, variance.a
Texture2D<float> Depth;
Texture2D<float4> NormalAlbedo;
Texture2D<float2> Motion;
[numthreads(8,8,1)]
void CSMain(uint3 dispatchThread : SV_DispatchThreadID)  ...
  • Reproducible test harness: capture G-buffers, run shader, save irradiance buffers, compare to offline path-tracer.

    • Instead of struggling with outdated 0.33, consider:

    If you must run 0.33, treat it as a historical artifact – it looks great in static scenes but struggles in motion. reshade ray tracing shader rtgi 033 exclusive

  • Randomization: Blue noise sequence or hashed PCG per-pixel RNG to reduce structured noise.
  • Performance heuristics: screen resolution scaling, per-tile ray count variation based on luminance/variance, asynchronous compute to overlap with main rendering.
  • Memory: pack multiple channels into RGBA16F where precision allows.

    • Pascal Gilcher has moved on to RTGI "Mortens" (version 2.0), which uses Machine Learning (ML) denoising. It is incredible, but it requires an NVIDIA RTX 2060 or better to run at 1440p. Example compute shader kernel signatures and buffer layouts

    That means RTGI 0.33 Exclusive remains the ultimate democratization tool. It allows: Instead of struggling with outdated 0

    The "exclusive" nature of 0.33—paywalled for a year and then abandoned—has ironically preserved it. Because it is no longer updated, it is stable. It is a time capsule of the perfect balance between visual fidelity and computational cost.