---
title: "VRayVolumeGrid"
canonical: "https://documentation.chaos.com/space/VMAX/113575437/VRayVolumeGrid"
format: markdown
---
This page introduces the Volume Grid geometry object. Overview VRayVolumeGrid  is a special kind of volumetric effect that works with grid-based cache formats, compared to  Environment Fog  which is a general purpose volumetric effect. The Volumetric Grid reads its data from an input file which supports grid-based representation of the volume. Currently, VRayVolumeGrid supports three volume formats: OpenVDB  (. vdb ) – Supported by Houdini  ® , FumeFX  ®  , and RealFlow  ®      Field3D  (. f3d ) – Supported by FumeFX  ®  and Maya  ®  (using 3rd party plugins)   PhoenixFD  (. aur ) – Phoenix FD  ®  native volume format Immediately after the VRayVolumeGrid is created, a dialog appears for selecting the input file. After selection of the input file, a number of options are available to fine-tune and customize the volume. 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. ||V-Ray Toolbar|| >  Create V-Ray VolumeGrid ||V-Ray menu|| >  Create  >  Geometry  >  V-Ray VolumeGrid ||Create panel|| >  Geometry  >  V-Ray  category >  VRayVolumeGrid  > Click in a viewport to create VRayVolumeGrid The VRayVolumeGrid can also be created by dragging a relevant input file inside the active viewport. Volume Grid Options The following options are available to modify the appearance and rendering of the volume grid. Volumetric Grid Parameters Volumetric Grid Parameters on the Modify panel set overall cell and volume behavior, such as effect type, display resolution, surfacing, displacement type, etc. Read more Volumetric Options Volumetric Options specifically address the lighting, intensity, and opacity of fire and smoke. Read more Volumetric Grid Atmosphere Settings Volumetric Grid Atmosphere Settings affect probabilistic shading and gamma correction. Read more Tips Tips is an information page about input channels and distributed rendering. Read more