Key Features and Components

  • Fast ray tracing denoising solution
  • NRD is designed to work with 0.5 or 1 ray per pixel
  • Native implementation of the NRD API using engine capabilities
  • Includes three denoisers: ReLAX, ReBLUR, and SIGMA
  • Works with DX11, DX12, and Vulkan compatible engines on Windows 64bit
  • Currently supports the following signals:
  • Diffuse (with embedded ambient occlusion)
  • Specular or reflections (with embedded specular occlusion)
  • Shadows from an infinite light source (sun shadows)


Operating System
  • Windows 10 version 2004, SDK v191041
  • Dependencies
  • NVIDIA Geforce GTX 1000 series or higher, AMD RX 6000 series or higher
  • Development Environment
  • Visual Studio 2017 or Visual Studio 2019
  • DirectX Shader Compiler: Latest Windows SDK version or latest GitHub version (for Vulkan shaders).

  • The NVIDIA Real-Time Denoisers is a fast solution that uses input signals and environmental conditions to deliver results comparable to ground truth images.

    Release Notes

    NRD V. 2.9:
    • DLSS integrated into the sample with dynamic resolution scale support
    • Introduced new denoisers for ambient and specular occlusion
    • Introduced stand-alone ReLAX diffuse-only and specular-only denoisers
    • Added new functionality - advanced pre-accumulation filtering pass
    • Added new functionality - user-driven antilag (user provided history confidence)
    • Added helpers for better many RPP support
    • Added optional material ID aware spatial filtering support
    • Improved white-box integration support (UE4, consoles, custom engines)
    • Meters to units conversion now happens inside the library
    • ReBLUR and ReLAX: IQ improvements
    • ReBLUR and ReLAX: now compute local curvature to improve specular tracking

    Please review the license agreement and check the box below to indicate that you accept it and access NRD.

    Already accepted into the NVIDIA NRD access program? Click here to visit the GitHub repo.

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