# AtlasPopulationMode

> Options to specify the atlas population mode, which defines the type of font asset.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine.TextCore.Text](/engine/6000.5/script-reference/unityengine/textcore/text.md)
* **Assembly:** UnityEngine.TextCoreTextEngineModule

```csharp
public enum AtlasPopulationMode
```

## Fields

| Value                                                                                                   | Description                                                                                                                                                                                                                                                                  |
| ------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Dynamic](/engine/6000.5/script-reference/unityengine/textcore/text/atlaspopulationmode/dynamic.md)     | Dynamic font assets can be populated at runtime, but incur a higher performance overhead than static font assets. A dynamic font asset depends on its source font file, which is included in builds.                                                                         |
| [DynamicOS](/engine/6000.5/script-reference/unityengine/textcore/text/atlaspopulationmode/dynamicos.md) | Dynamic OS font assets provide the same functionality and performance as dynamic font assets. In the Editor, a Dynamic OS font asset depends on its source font file. For a Dynamic OS font asset to work in a build, the target platform must contain its source font file. |