# BUFFERUSAGE_COPY_SRC

Variable · category: Graphics

Source: https://github.com/playcanvas/engine/blob/b5b983982a9860d21e0c1dafb2f85f72e2c01afb/src/platform/graphics/constants.js#L203

A flag utilized during the construction of a [StorageBuffer](https://api.playcanvas.com/engine/classes/StorageBuffer.md) to ensure its compatibility
when used as a source of a copy operation.

```ts
const BUFFERUSAGE_COPY_SRC: 4 = 0x0004
```