static void Main(string[] args)
{
Directory.CreateDirectory("result");
string[] extensions = { "png", "jfif", "bmp", "dds", "tga" };
for (int j = 0; j < extensions.Length; j++)
{
string[] files = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, "*." + extensions[j]);
for (int i = 0; i < files.Length; i++)
{
byte[] imageFile = File.ReadAllBytes(files[i]);
getImageSize(imageFile, out ushort width, out ushort height, extensions[j]);
byte[] texFile = new byte[36 + imageFile.Length];