FUSION · NODE REFERENCE

VolumeMask

3D volume masking

Limits volumetric 3D effects inside a spatial region, letting fog, density or other volume processing exist only where the scene needs it.

3D MasksAdvanced

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VolumeMask

Overview

What VolumeMask does

VolumeMask operates in a 3D volume context rather than as a flat 2D alpha mask. It is useful when fog or volumetric effects need a controlled spatial boundary that moves correctly with the scene and camera.

When to use it

Limit fog to a room or region
Create local volumetric light
Cut holes in a volume
Animate a volume boundary
Build layered atmospheric regions
Control expensive volume processing

VolumeMask in context

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**VolumeMask Shape tab: Cube/Sphere, Translation, Rotation, Scale, Size and Soft Edge**
Example for VolumeMask.
Original image

**VolumeMask Color tab: Z Slices, First Slice Time, Color, RGBA, Subtractive/Additive and Mask Only**
Example for VolumeMask.
Original image