Using 3D Masks

How to use a 3D Mask

To create a 3D mask in order to modulate a 3D modifier, right click on this modifier and select menu Masks:

Similarly to 2D modifiers, 3D modifiers can have multiple masks that get automatically blended together.

Masks can be duplicated with Ctrl+D or with Ctrl + drag and drop.

A very common usage of 3D masks is to mask a Displace modifier, like in this example based on a uv-mapped 2D layer :

Refer to the 3D Mask documentation to learn more about the ifferent types of masks.

Remember that masks can be applied to any modifier. Here are a few examples:

A Turbulence field modulated by the Age vertex mask:

Draw lines over a geometry using a Texture Coordinates mask over a 3D Thick Lines renderer:

Displaced Random Points over a plane using their color with a Color mask:

Use Layer vertex Masks over a Scale modifier to define shape of instantiate cubes over a Plane:

3D Masks can also be used to modulate the opacity of a specific surface renderer component. Here, a Fresnel Mask is applied on the diffuse component of a surface renderer in order to do a nice shiny light on the edge of the geometry, dependent of the object’s normal and the camera position: