Suggestion: Implement HDR tone map effect and white level adjustment effect added in Windows 10 1809 #761
Description
The HDR tone map effect and white level adjustment effect were added to Direct2D in Windows 10 1809. Win2D should support these effects. I'd be happy to submit a pull request, apart from the fact that I'm struggling slightly to unravel the system for generating effects. As far as I can see I need to add an XML file here describing the effect, but the property names etc need to be exactly right else it won't work. Also, I think I would need to an an entry in here to specify the minmum Windows version. There's also a new enum D2D1_HDRTONEMAP_DISPLAY_MODE.