//#define COORDINDEX(x,y,z) x+z+y*(x ## SIZE)
//#define COORDINDEX(x,y,z) x+y*(x ## SIZE)*(z ## SIZE)+z
//#define CO Coord(x,y,z)
//#define COORDINDEX(x,y,z) (x+idx[y]+z)
//#define COORDINDEX(x,y,z) (x+lbuff[y]+z)
//#define LDSOFFSET 512
//#define COORDINDEX(x,y,z) (lbuff[x]+lbuff[y]+z)