I'm trying to poke holes and stuff through a UI image so the player can see the background. I thought I could do this with a mask, but it seems I need to reverse how masks work. My image is a scroll rect so the hole can move up and down, and the player should see the background through it. Any help? I tried a shader I found in some threads, but they weren't working in Unity 2017. Please guys this is for a jam, I don't have much time :O EDIT, how the background is an image too.