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Arnold Implicit Surface field modification in shader

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Anonymous
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Arnold Implicit Surface field modification in shader

Hello,
is it possible to modify values of Field Channel in shader when rendering Arnold Implicit Surface node?

So I am rendering VDB with SDF volume grid, but in shader I seem to be able to manipulate only surface shading. I would like to manipulate (or even generate if possible) this SDF field.

Example workflow could be: sample SDF grid with Volume Sample Float set to SDF mode, process the value and output to the renderer for rendering as a surface.

Also I have one side question: are there any examples of Arnold API on how to write procedurals for Arnold Implicit Surface? There is an option Custom in ar_volume_type parameter which I assume can be used for that. I would like to pass distance values through API to the renderer and let Arnold to determine the surface and shading. Any suggestions or directions will be appreciated :leicht_lächelndes_Gesicht:

Best,
Juraj

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