5.4:Use "Deferred" and "OnRenderImage" together in the VR camera,not render.

Change Camea RenderingPath to "Deferred"
Add a Script in Camera, Code:
public void OnRenderImage(RenderTexture source, RenderTexture destination)
{
Graphics.Blit(source, destination);
}

Press Play Button:

Glass Not Show too.

Unity:5.4.2 64bit
VR:Htc VIVE
System: WIN10