AMD FidelityFX Denoiser includes specialized spatio-temporal denoisers optimized for specific workloads:

  • Shadow Denoiser: Designed to denoise a shadow mask created from tracing jittered rays towards a single light source.
  • Reflection Denoiser: Designed to remove noise from the result of tracing jittered reflection rays based on surface roughness.


  • DirectX®12.
  • Vulkan®.

Download the latest version


Xbox developer?

An example use of AMD FidelityFX Shadow Denoiser exists within the Xbox Game Development Kit samples.


State-of-the-art algorithm

Optimized for Shader Model 6.0+

Open source, MIT license

Shadow Denoiser specific features

  • Spatio-temporal denoiser, specialized for shadow denoising.
  • Tile classifier to skip work on areas without spatial variance in the shadow mask.
  • Increased contribution of spatial filters on low temporal sample counts.
  • Analysis of the local pixel neighborhood to counter ghosting artifacts.

Shadow Denoiser comparison

Shadow Denoiser additional resources

Head over to our Hybrid Shadows sample to see the Shadow Denoiser in action.

Hybrid Shadows

Hybrid Shadows Sample

This sample demonstrates how to combine ray traced shadows and rasterized shadow maps together to achieve higher quality and performance.

Reflection Denoiser Features

  • High performance spatio-temporal denoiser, specialized for reflection denoising.
  • Tile Classifier to skip non reflective areas.
  • Variable Rate Traversal: From full rate for mirror reflections down to quarter rate for glossy reflections.
  • Temporal Variance Guided Tracing.


  • Classifier pass for reflection rays and denoiser tiles.
  • Spatial filter pass.
  • Temporal reprojection pass.
  • Gaussian blur.

Reflection Denoiser Comparison

How the Reflection Denoiser works

1. Noisy reflection input
3. Temporal resolve
2. Spatial resolve
4. Gaussian blur

Reflections Denoiser additional resources

Head over to AMD FidelityFX SSSR to see the Reflections Denoiser in action.

Further resources

A set of guidelines for developers on how to present options in the game’s user interface to enable/disable AMD FidelityFX Effects.

Find out what developers are saying about AMD FidelityFX.

More AMD FidelityFX effects

Cauldron Framework

Radeon™ Cauldron is our open source experimentation framework for DirectX®12 and Vulkan®.

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