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- Base Grid: set the name of the base grid inside the VDB file that defines the volumetric domain. Usually this field is called "density". If no name is supplied here, Maxwell uses the first grid present in the file.
- Base Grid density: controls the density of the base grid.
- Additional grids for UV: here you can specify names of other grids usually found in VDB file that describe velocity or temperature, or any other data that was calculated during a simulation (such as particle distance, acceleration etc.). Use a comma to separate the different grid names. These grids can be used to map textures, usually a colored gradient, to better visualize the stored data. For example if the VDB file contains a "temperature" field, this means that the different temperatures of the simulation is stored in the file and you can use it to visualize these different temperatures using a blue to red gradient that uses this field as a driver to create the necessary UV map when rendering. Please see the "Texturing OpenVDB volumetrics" below for more details.
- VEC_MOD 0 to 9 min/max: Lets you redefine the normalized range of the corresponding vector grid stored in the file, before it is normalized to 0,1 space for UV mapping.
- FLOAT 0 to 9 min/max: Lets you redefine the normalized range of the corresponding scalar grid stored in the file, before it is normalized to 0,1 space for UV mapping.
Texturing OpenVDB volumetrics
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