В Unity3D cохраняет текстуру в файл

savetexture.cs

void SaveTextureToFile(Texture2D tex, string fileName){
  	byte[] bytes = tex.EncodeToPNG();
		System.IO.FileStream file = System.IO.File.Open(Application.dataPath + "/" + fileName, System.IO.FileMode.Create);
		System.IO.BinaryWriter binary = new System.IO.BinaryWriter(file);
		binary.Write(bytes);
		file.Close();
}