# Building Masks The mask builder works by toggling filters or/and a noise together. These masks allow to automatically apply the Sub-Layer Material on the terrain. The functions described below applies to the whole mask and not the individual filters. ![](https://3751470283-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9KuznrlYB4kqrVq5qJMd%2Fuploads%2Fp1ImWLfVJLAlOv3GQcgM%2FMask_1.png?alt=media\&token=a9a0456a-6cb5-40a1-92db-ad3d3f5f5f66)
NumberFunction
1Changes how the masks act with the manually drawn areas of the Sub-Layer. See Manual Sub-Layer Drawing for more information.
2Clicking on the rectangle shows the color picker, to change the color of the layer when in LOOKDEV View. See LOOKDEV View for more information.
3
  • Contrasts, Increase/Decrease force of the Sub-Layer mask.
    The Force multiplies the mask by itself to increase its force.
  • The steps values steps down the values instead of letting them smooth if set to a value greater than 0.
  • The "Start from white mask" sets the mask to start to 1 instead of 0.
The **"Contrain Mask to Sub-Layer"** options allows you to constrain the Mask of the current Sub-Layer to one or more Sub-Layers, as long as they are under the Sub-Layers being edited and have valid masks.

The Sub-Layer 2 (Green) is constrained
to the Sub-Layer 1 (Red).

The next page will show in more detail each filters. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sylvl.gitbook.io/panoramake-release/interface-overview/builder-interface/building-masks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.