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public static Texture2D LoadPNG(string filePath) {
  Texture2D tex = null;
  byte[] fileData;
     
  if (File.Exists(filePath))     {
    fileData = File.ReadAllBytes(filePath);
    tex = new Texture2D(2, 2);
    tex.LoadImage(fileData); //..this will auto-resize the texture dimensions.
  }
  return tex;
}