Carmack's genius already making Oculus better

[bitWISE]

Very cool video. Pretty amazing idea to apply screen rotation using a pixel shader and depth buffer.

[Whiskey 7]

The detail I was enlightened re depth maps (Z buffer)explanation

[Pext]

Great video

[PhoeniX]

Heh the depth map stuff takes me back to Uni where we had to implement steep parallax mapping using GLSL - this paper was invaluable. There was barely anything on Google about it at the time. The effort works amazingly well.