The OpenVDB texture node in V-Ray for Blender allows importing and adjusting textures from the OpenVDB library.

UI Path: ||V-Ray Node Editor|| > Shader > Add > Textures > V-Ray OpenVDB

This section describes the input sockets of the node. Some sockets have dedicated parameters, which are further described below, and some sockets are just inputs.

Mapping – This slot allows you to connect a Mapping node (UVW Mapping, UWV Randomizer) to adjust the UWVs of the texture.

Vector Mult (input socket) – Allows a color node to specify the Vector Mult parameter.

File – Source path to the OpenVDB file.

Render Grid – The name of the OpenVDB grid to render.

Velocity Grid – The name of the velocity grid used for motion blur.

Delay Load – When enabled, it delays the OpenVDB voxels until requested.

Interpolation – Set the grid interpolation sampler:

Linear
Quadratic
None

Use 3d Mapping – Enables or disables 3D mapping for the procedural texture. Note that his mode is not supported yet by the Hybrid (CUDA) engine. 

Float Mult – Texture multiplier for the float data.

Vector Mult – Texture multiplier for the vector data.