private float DistanceSquare(ComputeBuffer a, ComputeBuffer b)
{
var viewA = a.ViewAs <float>();
var viewB = b.ViewAs <float>();
float d = 0;
for (int i = 0; i < viewA.Lenght; i++)
{
var sub = viewA[i] - viewB[i];
d += sub * sub;
}
return(d);
}