tools/shaderc.exe --platform windows -p vs_4_0 -O 3 -i Shaders/Lib --type vertex --depends -o Shaders/dx11/vs_cubes.bin -f Shaders/Source/vs_cubes.sc
Error: 0x80004002

private Int32 ManhattenDistance(HashPoint a, HashPoint b)
{
    var dx = b.X - a.X;
    var dy = b.Y - a.Y;
    return Math.Abs(dx) + Math.Abs(dy);
}

private Int32 Distance(HashPoint a, HashPoint b)
{
    var dx = b.X - a.X;
    var dy = b.Y - a.Y;
    return (Int32)(Math.Sqrt(dx * dx + dy * dy) * 100);
}

Math.Abs(dx * dx) + Math.Abs(dy * dy);
or
(Math.Abs(dx) + Math.Abs(dy)) * (Math.Abs(dx) + Math.Abs(dy));