---
title: "CGSetDisplayTransferByByteTable(_:_:_:_:_:)"
framework: coregraphics
role: symbol
role_heading: Function
path: "coregraphics/cgsetdisplaytransferbybytetable(_:_:_:_:_:)"
---

# CGSetDisplayTransferByByteTable(_:_:_:_:_:)

Sets the byte values in the 8-bit RGB gamma tables for a display.

## Declaration

```swift
func CGSetDisplayTransferByByteTable(_ display: CGDirectDisplayID, _ tableSize: UInt32, _ redTable: UnsafePointer<UInt8>, _ greenTable: UnsafePointer<UInt8>, _ blueTable: UnsafePointer<UInt8>) -> CGError
```

## Parameters

- `display`: The identifier of the display to be accessed.
- `tableSize`: The number of entries in each table.
- `redTable`: An array of size tableSize containing the byte values of the red channel in the display’s gamma table.
- `greenTable`: An array of size tableSize containing the byte values of the green channel in the display’s gamma table.
- `blueTable`: An array of size tableSize containing the byte values of the blue channel in the display’s gamma table.

## Return Value

Return Value A result code. See Core Graphics Data Types and Constants.

## Discussion

Discussion The same table may be passed in for the red, green, and blue channels. The tables are interpolated as needed to generate the number of samples required by the graphics hardware.

## See Also

### Functions

- [CGAcquireDisplayFadeReservation(_:_:)](coregraphics/cgacquiredisplayfadereservation(_:_:).md)
- [CGAssociateMouseAndMouseCursorPosition(_:)](coregraphics/cgassociatemouseandmousecursorposition(_:).md)
- [CGBeginDisplayConfiguration(_:)](coregraphics/cgbegindisplayconfiguration(_:).md)
- [CGCancelDisplayConfiguration(_:)](coregraphics/cgcanceldisplayconfiguration(_:).md)
- [CGCaptureAllDisplays()](coregraphics/cgcapturealldisplays().md)
- [CGCaptureAllDisplaysWithOptions(_:)](coregraphics/cgcapturealldisplayswithoptions(_:).md)
- [CGCompleteDisplayConfiguration(_:_:)](coregraphics/cgcompletedisplayconfiguration(_:_:).md)
- [CGConfigureDisplayFadeEffect(_:_:_:_:_:_:)](coregraphics/cgconfiguredisplayfadeeffect(_:_:_:_:_:_:).md)
- [CGConfigureDisplayMirrorOfDisplay(_:_:_:)](coregraphics/cgconfiguredisplaymirrorofdisplay(_:_:_:).md)
- [CGConfigureDisplayMode(_:_:_:)](coregraphics/cgconfiguredisplaymode(_:_:_:).md)
- [CGConfigureDisplayOrigin(_:_:_:_:)](coregraphics/cgconfiguredisplayorigin(_:_:_:_:).md)
- [CGConfigureDisplayStereoOperation(_:_:_:_:)](coregraphics/cgconfiguredisplaystereooperation(_:_:_:_:).md)
- [CGConfigureDisplayWithDisplayMode(_:_:_:_:)](coregraphics/cgconfiguredisplaywithdisplaymode(_:_:_:_:).md)
- [CGCursorIsDrawnInFramebuffer()](coregraphics/cgcursorisdrawninframebuffer().md)
- [CGCursorIsVisible()](coregraphics/cgcursorisvisible().md)