> For the complete documentation index, see [llms.txt](https://ronanmahon-art.gitbook.io/decal-designer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ronanmahon-art.gitbook.io/decal-designer/decal-brush/faq-decal-brush.md).

# FAQ Decal Brush

### What version of Unreal is required for Decal Brush?

Unreal Engine 5.3 and newer releases. Decal Brush is a scriptable tool blueprint and the nodes used are only available from UE5.3. For this reason it is unfortunately not backwards compatible.

### What are the controls for Decal Brush?

Check out the controls on the [Decal Brush Modes page](/decal-designer/decal-brush/modes.md). 

Watch this video for how to use Decal Brush. \
There is a display on the bottom left showing mouse and keys being used. 

{% embed url="<https://youtu.be/xi-dqeUhf00?si=Ciu2h9kaUjryWwl9>" %}
How to use Decal Brush
{% endembed %}

The Epic blueprint scriptable tools framework only allows for the use of the mouse Left Click and the following modifiers: Ctrl, Shift and Alt. As a result, all of the hotkeys are limited to a combination of these buttons. \
If you dislike hotkeys, a bool toggleable version is [planned in a future release](https://trello.com/c/zWxmwAIi/76-scriptable-tools-decal-brush). The hotkeys are also visible on the bottom display bar:

<figure><img src="https://2959358512-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MkbFtFcgzGsjc9kCvZT%2Fuploads%2FVWgm09EDaElxwE47S6q7%2FBottomBar.jpg?alt=media&amp;token=85d0d39c-eed8-4d1b-8833-ff2aa3862f77" alt=""><figcaption><p>Decal Brush display bar</p></figcaption></figure>

### How do I change the Decal Brush material?

Simply drag one or more decal materials into the Decal Material Array. A random material from this array will be spawned as you paint.&#x20;

<figure><img src="https://2959358512-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MkbFtFcgzGsjc9kCvZT%2Fuploads%2FlOhreTTIF5tzkjI7uvDk%2FDecalBrush_MaterialArray.jpg?alt=media&amp;token=871ea6fe-6797-466d-a205-4029e23dc11a" alt=""><figcaption><p>Drop one or more decal materials here</p></figcaption></figure>

Alternatively you can use [Pick Material](/decal-designer/decal-brush/modes.md#pick-material) mode to replace your current material. Simply press Alt to toggle on the mode, and click on any decal in the viewport.&#x20;

### Are my settings saved between sessions?

Yes, all [Decal Brush parameters](/decal-designer/decal-brush/parameters.md) are saved between sessions, so you can pick up where you left off. Some parameters such as the list of currently Ignored Actors can be optionally cleared between sessions.&#x20;

### I found a bug, how do I report it?

Decal Brush is quite new so there are bugs. \
Please help me make the tool better by [letting me know here](https://forms.gle/sbS5otstPudPJQVw5)

### Do you have more features planned?

Yes, check you the current [list of planned features on my Trello board](https://trello.com/c/zWxmwAIi/76-scriptable-tools-decal-brush)