SItoA 3.5 includes the Volume primitive and a OpenVDB volume plugin, so you can render VDB files in Softimage.
[Arnold] Rendering OpenVDB in Softimage
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eX-SI
ICE, scripting, and other tech stuff about Softimage aka XSI
SItoA 3.5 includes the Volume primitive and a OpenVDB volume plugin, so you can render VDB files in Softimage.
eX-SI 