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This page introduces the VRayVolumeGrid node.

 

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Overview

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VRayVolumeGrid is a special kind of volumetric effect that works with grid-based cache formats. Compare with 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: 

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

 

Immediately after the VRayVolumeGrid node is created, a properties dialog appears with a field for selecting the input file. A number of options are then available to fine-tune and customize the volume.

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UI Path: ||Toolbar|| > V-Ray Menu icon > Volumetrics > VRayVolumeGrid

 

 

Volume Grid Options

The following options are provided for modifying the appearance and rendering of the volume grid. For more information, see the Volumetric Grid Properties page.

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  • Input tab - Provides controls for multiple frame input, timing of frames, and blending/smoothing of frames.
  • Preview tab - Provides controls for how the volume grid effect is displayed in the viewport.
  • Rendering tab - Provides controls for how the volume grid effect is rendered.
  • Fire tab - Provides volumetric shader controls for the emissive color (fire) and the light emitted by the volume grid.
  • Smoke tab - Provides volumetric shader controls for the diffuse (smoke) color and opacity.