func (uintComponent) PutMat4(b []byte, v [4][4]uint32) {
    binary.LittleEndian.PutUint32(b, v[0][0])
    binary.LittleEndian.PutUint32(b[4:], v[1][0])
    binary.LittleEndian.PutUint32(b[8:], v[2][0])
    binary.LittleEndian.PutUint32(b[12:], v[3][0])