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VRayDenoiser offers a choice between the Default V-Ray denoiser and and the NVIDIA AI denoiser. Each offers a different denoising algorithm that comes with different benefits.

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The Nvidia AI denoiser only works on Nvidia GPUs starting with the Kepler GPU architecture (GTX 6xx series Maxwell and newer )GPU architectures.


Attributes

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The parameters for this render element appear in the Attribute Editor under Extra V-Ray Attributes.

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Engine – Allows choosing between the Default V-Ray denoiser and the NVIDIA AI denoiser. Note that, the NVIDIA AI denoiser requires an NVIDIA GPU.

Preset – Offers presets to automatically set Strength and Radius values. For more information, see the Denoising Presets example below.

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Radius – Specifies the area around each pixel to be denoised. A smaller radius affects a smaller range of pixels, while a larger radius affects a larger range, which increases the noise removal. This value is automatically set by preset selection, but can be changed when Preset is set to Custom.

Hardware acceleration – Uses the OpenCL version of the denoiser, if possible. It falls back to the CPU version if OpenCL is – Uses the GPU device(s) to accelerate the denoising calculations. In case there is no compatible GPU device, denoising will automatically fall back to use the CPU, even if the option is enabled. When the NVIDIA AI denoiser is used, this option is not available.

Generate Render Elements – When enabled, adds only the elements needed for the current denoiser. When disabled, it adds only the noiseLevel and defocusAmount render elements; the rest must be added manually.

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