depth buffer 3D question

[drhouse]

this is a wild question, but I figured the author of DPFix would probably know better than anyone else. I've always wanted to play Deadly Premonition in VR with 3D, which requires a depth buffer. Is a depth buffer in the game, is it used for shadows? Could it hypothetically be used to create a 3D effect while using Reshade's Depth3D or through some other manner?