Add "clipping" option for ray portal/parallax occlusion

Hi, i want to suggest adding a setting for parallax occlusion clipping, or "pixel depth offset". The pictures i attatched show 3d objects have the illusion of being in real 3d space because of the pixels being offset, even the shadows are offset, although both pictures are just a plane. This could make rendering massive environments possible, using low poly planes, and objects can interact in what looks like real world space.