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This page provides general information and links about the V-Ray Volumetric Grid.


The V-Ray Volumetric Grid allows you to load, shade and render grid-based simulation cache files, as opposed to the Environment Fog,  which is a general purpose volumetric shader and requires no files on disk.

In addition to volumetric rendering, the V-Ray Volume Grid also supports Isosurface rendering and meshing.

Currently, the following file formats are supported:

  • OpenVDB  (.vdb) - Supported by Houdini® and RealFlow®
  • Field3D  (.f3d) - Supported by FumeFX® and Maya® (using 3rd party plugins)
  • PhoenixFD (.aur) - Phoenix FD® native volume format

For a list of supported Render Elements, please check the V-Ray Render Elements Support page.

You may also check the Volumetric Rendering In-Depth guide for tips on speeding up the rendering of volumetric effects with V-Ray.

UI Path: ||V-Ray Shelf|| > Create VRay Volume Grid

||V-Ray Shelf|| > Create VRay Volume Grid

||V-Ray Menu|| > V-Ray Volume Grid

||Create Menu|| > V-Ray > Create V-Ray Volume Grid

The VRayVolumeGrid can also be created by dragging and dropping a relevant input file (.aur, .vdb, .f3d) inside the active viewport. 

Extra Tips

The following pages contain extra information for using the V-Ray Volume Grid:

  • Volumetric Grid Tips is an information page containing distributed rendering and FumeFX render settings tips.

  • Starting with V-Ray Next, Update 1, you need to re-export Maya fluids to .vrscenes, if you want to use vrscene caches.
  • The Frame Info tab gives you information for the current frame.
  • The Grid rollout allows you to render a volume without any loaded cache from the Input rollout.

  • The Input rollout determines the path of the input files for rendering and preview as well as the playback effects.

  • The Preview page contains information about the representation of the cache files in the viewport.

  • Under the Rendering rollout and all its sub-rollouts, you can find all options for rendering a Fire / Smoke simulation.
  • Volumetric Rendering Tips page provides tips on rendering volumetric effects.

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