---
title: NSOpenGLPFAAlphaSize
framework: appkit
role: symbol
role_heading: Global Variable
path: appkit/nsopenglpfaalphasize
---

# NSOpenGLPFAAlphaSize

Value is a nonnegative buffer size specification. An alpha buffer that most closely matches the specified size is preferred.

## Declaration

```swift
var NSOpenGLPFAAlphaSize: Int { get }
```

## See Also

### Constants

- [NSOpenGLPFAAccelerated](appkit/nsopenglpfaaccelerated.md)
- [NSOpenGLPFAAcceleratedCompute](appkit/nsopenglpfaacceleratedcompute.md)
- [NSOpenGLPFAAccumSize](appkit/nsopenglpfaaccumsize.md)
- [NSOpenGLPFAAllRenderers](appkit/nsopenglpfaallrenderers.md)
- [NSOpenGLPFAAllowOfflineRenderers](appkit/nsopenglpfaallowofflinerenderers.md)
- [NSOpenGLPFAAuxBuffers](appkit/nsopenglpfaauxbuffers.md)
- [NSOpenGLPFAAuxDepthStencil](appkit/nsopenglpfaauxdepthstencil.md)
- [NSOpenGLPFABackingStore](appkit/nsopenglpfabackingstore.md)
- [NSOpenGLPFAClosestPolicy](appkit/nsopenglpfaclosestpolicy.md)
- [NSOpenGLPFAColorFloat](appkit/nsopenglpfacolorfloat.md)
- [NSOpenGLPFAColorSize](appkit/nsopenglpfacolorsize.md)
- [NSOpenGLPFADepthSize](appkit/nsopenglpfadepthsize.md)
- [NSOpenGLPFADoubleBuffer](appkit/nsopenglpfadoublebuffer.md)
- [NSOpenGLPFAMaximumPolicy](appkit/nsopenglpfamaximumpolicy.md)
- [NSOpenGLPFAMinimumPolicy](appkit/nsopenglpfaminimumpolicy.md)