Radeon ProRender


Rendering complex scenes often takes prohibitively long to resolve noise. A typical decision for reducing the amount of noise would be to increase the number of samples and tune quality settings. However, depending on the scene complexity and effects used, this might take far longer for the image to converge. An alternative solution for cleaning up the noise is to use the denoiser.

The denoiser ships with a set of filters that work by detecting noisy pixels and reconstructing their color. All filters come with tried and tested presets being a good point to start from.

You can choose between the following denoising filters:


Although the denoiser allows you to keep sampling and render time low, do not consider it a magic wand. The decision whether to use the denoiser or nor, and which filter to choose, will most likely depend on the project. Note also that the denoiser will perform better with more samples.


Depending on the filter used, the denoiser can run on GPU or CPU. The Bilateral, Local Weighted Regression and Edge Avoiding filters run on GPU only. The Machine Learning filter also requires GPU but can use the CPU mode if no GPU is available.


The denoiser supports Blender View Layers allowing you to clean up the noise for selected objects in the scene. For details on working with View Layers, see the Blender documentation.

Enabling Denoiser

In AMD Radeon ProRender, denoising is part of the rendering process. The denoiser is involved immediately after the render process completes, and should be enabled before you start rendering.

To enable the denoiser:

  1. Make sure that AMD Radeon ProRender is set as the active render engine in Blender.

    For details, see Switching to Radeon ProRender for Blender.

  2. In the Blender Properties editor, switch to the View Layer tab.

  3. Enable the RPR Denoiser option.

  4. Choose the filter type.

    Generally, it is recommended to use the default filter presets. However, you can tweak individual filter settings if you feel you can achieve better results.

  5. Start the render.

The denoiser works for both the viewport render and the production render.