merged anthony's fix for the view distance calc, fixing the infinite voxel rendering problem
merged anthony's fix for the view distance calc, fixing the infinite voxel rendering problem

mattbucci/destruct-o,mattbucci/destruct-o,mattbucci/destruct-o,mattbucci/destruct-o,mattbucci/destruct-o,mattbucci/destruct-o,mattbucci/destruct-o