AMD FSR Ray Regeneration

ML-powered real-time denoising

AMD FSR™ Ray Regeneration is a standalone, machine learning-powered real-time denoiser that integrates with game engines, enabling high-quality visuals by denoising inputs from ray-traced workloads.

Requiring AMD Radeon™ RX 9000 Series graphics (RDNA™ 4 architecture), it works best when combined with other AMD FSR “Redstone” technologies and transforms noisy outputs from ray tracing into a clean, coherent image.

AMD FSR Ray Regeneration delivers:

  • Superior results compared to analytical denoising using ML.
  • Decoupled denoising independent of upscaling.
  • Optimal results when paired with FSR Upscaling.

Supports:

  • DirectX® 12.
  • Windows® 11.

Download the latest version - v1.2.1

Features

ML-powered denoising

Superior image quality

Decoupled denoising

Easy integration

ML-powered real-time denoising

Since the advent of hardware-accelerated ray tracing, real-time game and rendering engines have increasingly adopted ray tracing techniques. From realistic reflections to finely detailed shadows, ray tracing has significantly elevated visual fidelity in modern games. As GPU ray tracing capabilities continue to improve, developers are pushing the boundaries of global illumination (GI) and exploring real-time path tracing. However, raw ray-traced outputs are inherently noisy, making effective denoising essential for producing clean, high-quality images.

Denoising transforms noisy ray- or path-traced outputs into coherent, visually accurate images, often leveraging both spatial and temporal information. AMD FSR™ Ray Regeneration performs this task with a key advantage: it uses machine learning (ML) to dynamically determine optimal filter weights, delivering superior results compared to purely analytical methods.

AMD FSR Ray Regeneration OFF
AMD FSR Ray Regeneration ON
JPG (3840x2160)
JPG (3840x2160)

AMD FSR Ray Regeneration 1.2.1 example

Decoupled denoising

AMD FSR™ Ray Regeneration performs denoising independently of upscaling, making it a decoupled denoiser. In contrast, denoising and upscaling can also be combined into a single, joint operation. Both approaches are valid, but decoupling denoising into its own dispatch call simplifies adding additional rendered content afterward.

Signals

To maximize compatibility and efficiency when denoising your game’s specific workloads, AMD FSR Ray Regeneration provides multiple input/output signals:

Signal flagsInput/output signals:
FFX_DENOISER_SIGNAL_AMBIENT_OCCLUSIONAmbient occlusion (in [0, 1]/[0, 1])
FFX_DENOISER_SIGNAL_DIRECT_DIFFUSEDirect diffuse
FFX_DENOISER_SIGNAL_DIRECT_SPECULARDirect specular
FFX_DENOISER_SIGNAL_DOMINANT_LIGHT_VISIBILITYDominant light visibility (in [0, FP16_MAX]/[0, 1])
FFX_DENOISER_SIGNAL_INDIRECT_DIFFUSEIndirect diffuse
FFX_DENOISER_SIGNAL_INDIRECT_SPECULARIndirect specular
FFX_DENOISER_SIGNAL_SPECULAR_OCCLUSIONSpecular occlusion (in [0, 1]/[0, 1])

Works with AMD FSR Upscaling and FSR Frame Generation

AMD FSR™ Ray Regeneration is designed to work seamlessly with AMD FSR Upscaling and AMD FSR Frame Generation. Additionally, the temporal anti-aliasing provided by FSR Upscaling adds an extra layer of smoothing when used alongside FSR Ray Regeneration.

Performance

AMD FSR™ Ray Regeneration performance may vary depending on your target hardware and configuration.

Denoising direct diffuse, direct specular, indirect diffuse and indirect specular signals:

Target Render ResolutionAverage [ms]
960x5400.99
1920x10803.74
2560x14407.15

Denoising indirect diffuse and indirect specular signals:

Target Render ResolutionAverage [ms]
960x5400.81
1920x10803.08
2560x14406.01

Denoising indirect specular signal:

Target Render ResolutionAverage [ms]
960x5400.71
1920x10802.57
2560x14405.27

Denoising dominant light visibility signal:

Target Render ResolutionAverage [ms]
960x5400.13
1920x10800.36
2560x14400.57

Performance figures are accurate at the time of writing for an AMD Radeon™ RX 9070 XT and are subject to change.

Requirements

Supported GPUs

  • AMD Radeon™ RX 9000 Series graphics cards and above.

Supported graphics APIs

  • DirectX® 12 + Shader Model 6.6.

Supported OS

  • Windows® 11.

Footnotes and disclaimers

Crimson Desert © 2025-2026 Pearl Abyss Corp. Crimson Desert is a trademark of Pearl Abyss. All rights reserved.

DirectX and Windows are trademarks of the Microsoft group of companies.

Version history

  • Added optional standalone ambient occlusion denoising.

  • Added optional standalone specular occlusion denoising.

  • Fixed querying GPU memory usage after context creation.

  • Querying GPU memory usage before context creation now includes shader visible descriptors.

  • Added FFX_DENOISER_DISPATCH_NON_ENCODED_ALBEDO flag alias for FFX_DENOISER_DISPATCH_NON_GAMMA_ALBEDO.

  • Deprecated FFX_DENOISER_DISPATCH_NON_GAMMA_ALBEDO.

  • API breaking additions:

  • None

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