The Auto HDR feature in Windows that converts SDR games to HDR? I've not used the feature to be honest as have yet to see any evidence to support it being any good so don't want to bother with faffing around etc really.
Edit*
Wow so just noticed that if you enable the HDR mode in Res Evil The Village then it triggers the Windows HDR mode automatically when you launch the game, so there's no need to manually enable HDR in Windows for this game and then turn it off after gaming. It uses the Smart HDR feature of the display like how TVs work and how MPC-BE works with the MPC Video Renderer set to pass through HDR signal to display. This is the first game I have played that auto triggers HDR on launch. Excellent stuff!