This is a question about game development.

I'm a freshman who just started directx 9. I was going to make a game with my friend, but I don't know how to implement a game that is bright around the player and darkens when a certain distance is apart. I'd appreciate it if you let me know.

--- Add--- Is it a good idea to empty it in a circle in the middle, draw the rest dark, align the picture around the player, and move the picture according to the player?