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Min / Max ranges

Normally, you would look in Maxwells console panel to determine what the min/max ranges are for a certain grid, and enter those in the corresponding VEC_MOD_x, or FLOAT_x parameters.

Finding out which grids

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exist in an OpenVDB file

In order to find out how many grids are actually present in a VDB file, what their names are, what type of values they hold (float or vectors) and what these values are, simply load the vdb file using the MaxwellVolumetric extension and hit render. Look in the Console panel for detailed info about the data in the vdb file.

 

Texturing OpenVDB volumetrics

 

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To experiment, you can use some of the VDB files found at the official download page of the OpenVDB website. In the following examples we have used the "explosion.vdb" file.

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