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Clarisse 4.0 User Guide

Navigation: Using the 3D View

Real-time Denoiser

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To enable real-time denoising click on the denoiser icon (14) button while in Previz or Progressive Rendering mode. You can adjust the strength of the denoiser using the mini slider (15) next to the icon. When set to 100%, the 3D View displays the full denoised output. You can adjust this mini-slider if the result of the denoised image is too blurry. This typically happens if there are not enough samples for the denoiser to resolve the noise. To improve the results we strongly advise you to set the progressive rendering iteration count to a minimum of 4 iterations using Refinement Count (22).


Denoiser disabled on the left and enabled on the right.

Denoiser disabled on the left and enabled on the right.


In order to work properly your hardware must meet the following specifications:



NVIDIA GPU with CUDA compute capability 3.0 Kepler architecture

2 graphics cards with at least one NVIDIA GPU with CUDA compute capability 5.0 or higher on NVIDIA Maxwell/Pascal/Volta or higher GPU architecture


You can also control the denoiser to use Albedo and World Normal by using respectively Optix Denoiser Use Albedo and Optix Denoiser Use World Normal to guide the denoiser to improve its results directly in the 3D View tool options (10). Note that this can sometimes lead to the opposite effect as it may degrade the quality of the denoised image. In that case, uncheck the Optix Denoiser Use World Normal and/or Optix Denoiser Use Albedo.


Current Limitations

The denoiser also tends to fail to resolve fine geometries by over blurring the result.


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