See explainer [here](https://github.com/ccameron-chromium/ColorWeb-CG/blob/screen_hdr_headroom/screen_hdr_headroom.md). This proposal introduces the ability to query the [HDR headroom](https://www.w3.org/TR/css-color-hdr-1/#introducing-headroom) for a screen. The API would be: ```idl partial interface ScreenDetailed : Screen { readonly attribute float headroom; attribute EventHandler onheadroomchange; } ```
See explainer here.
This proposal introduces the ability to query the
HDR headroom for a screen.
The API would be: