# 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. ``` case bgra10_xr_srgb ``` ## 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 property of an or the property of a . 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. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)