> For the complete documentation index, see [llms.txt](https://interopxyz.gitbook.io/three-plus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://interopxyz.gitbook.io/three-plus/components/materials/material-maps/roughness-map.md).

# Roughness Map

Apply a Roughness Map

## Description

Apply a Roughness Map to a material

{% tabs %}
{% tab title="Preview" %}
![](https://2542354621-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FbH1SBOktQqL8caPM2Xpc%2Fuploads%2Fx5jhfcL6HOk0E0uTupLj%2FMaterials-Map-Roughness.png?alt=media\&token=c2e1cfe1-8671-467d-b17c-67eb4ca4ea67)
{% endtab %}

{% tab title="Location" %}
**Name** | Roughness Map

**Nickname** | Roughness

**Tab** | ThreeJs

**Panel** | Materials

**Division** | 5
{% endtab %}

{% tab title="Inputs" %}
**M** | **Model Element** (*T+ Model*) | A Three Plus Model, Mesh, or Brep

**Rm** | **Roughness Map** (*Bitmap*) | The green channel of this texture is used to alter the roughness of the material. (A System Drawing Bitmap or full file path to an image.)

**R** | **Roughness** (*Number*) | How rough the material appears. 0.0 means a smooth mirror reflection, 1.0 means fully diffuse. 0-1.0
{% endtab %}

{% tab title="Ouputs" %}
**M** | **Model Element** (*T+ Model*) | The updated Three Plus Model Element
{% endtab %}

{% tab title="Mode" %}
*none*
{% endtab %}
{% endtabs %}

## Usage