# RGBA_DXT1_UNorm

> A three-component, block-compressed format (also known as BC1). Each 64-bit compressed texel block encodes a 4×4 rectangle of unsigned normalized RGB texel data. This format has a 1 bit alpha channel.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.Experimental.Rendering](/engine/6000.3/script-reference/unityengine/experimental/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
RGBA_DXT1_UNorm = 97
```