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To render a Houdini volume network or a non-VDB file, connect it to a Convert VDB SOP.  Change "Convert To" to VDB. When you render, RenderMan for Houdini will automatically write out the .vdb file to the Houdini temporary directory and use blobbydso:impl_openvdb procedural to read the .vdb file. This way, we are utilizing the efficient VDB format and not emitting RiVolume data that could get very large.

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