---
title: MTLPixelFormat.bgra10_xr_srgb
framework: metal
role: symbol
role_heading: Case
path: metal/mtlpixelformat/bgra10_xr_srgb
---

# MTLPixelFormat.bgra10_xr_srgb

A 64-bit extended-range pixel format with sRGB conversion and four fixed-point components of 10-bit blue, 10-bit green, 10-bit red, and 10-bit alpha.

## Declaration

```swift
case bgra10_xr_srgb
```

## Discussion

Discussion Pixel components are in blue, green, red, and alpha order, from least significant bit to most significant bit. Each component is a 16-bit chunk arranged as follows: The 10 most significant bits (9–15) store the component’s data. The 6 least significant bits (0–5) bits are padding, and their value is 0.

The blue, green, and red components are gamma encoded, and their values range from -0.5271 to 1.66894, before gamma expansion. The alpha component is always clamped to a [0.0, 1.0] range in sampling, rendering, and writing operations, despite supporting values outside this range. In order to determine a component’s value as a shader float: When reading a pixel, first apply the linear encoding (xr10_value - 384) / 510.0f and then the sRGB transform. When writing a pixel, first apply the sRGB transform and then the linear encoding shader_float = (xr10_value - 384) / 510.0f. To display wide color values on devices with wide color displays, you set this pixel format on the colorPixelFormat property of an MTKView or the pixelFormat property of a CAMetalLayer. Also provide an extended sRGB color space. note: Only devices with a wide color display can display color values outside the [0.0, 1.0] range; all other devices clamp color values to the [0.0, 1.0] range.

## See Also

### Extended range and wide color pixel formats

- [MTLPixelFormat.bgra10_xr](metal/mtlpixelformat/bgra10_xr.md)
- [MTLPixelFormat.bgr10_xr](metal/mtlpixelformat/bgr10_xr.md)
- [MTLPixelFormat.bgr10_xr_srgb](metal/mtlpixelformat/bgr10_xr_srgb.md)