Get the properties associated with a display.
SDL_PropertiesID SDL_GetDisplayProperties(SDL_DisplayID displayID);
|the instance ID of the display to query
Returns a valid property ID on success or 0 on failure; call SDL_GetError() for more information.
The following read-only properties are provided by SDL:
SDL_PROP_DISPLAY_HDR_ENABLED_BOOLEAN: true if the display has HDR headroom above the SDR white point.
SDL_PROP_DISPLAY_SDR_WHITE_POINT_FLOAT: the value of SDR white in the SDL_COLORSPACE_SRGB_LINEAR colorspace. On Windows this corresponds to the SDR white level in scRGB colorspace, and on Apple platforms this is always 1.0 for EDR content.
SDL_PROP_DISPLAY_HDR_HEADROOM_FLOAT: the additional high dynamic range that can be displayed, in terms of the SDR white point. When HDR is not enabled, this will be 1.0.
This function is available since SDL 3.0.0.