public static void SetTexture(
     string propertyName,
     Texture tex,
     int idx,
     params Renderer[] arrRend)
 {
     ChangeTexture.SetTexture(Shader.PropertyToID(propertyName), tex, idx, arrRend);
 }
 public static void SetTexture(string propertyName, Texture tex, params Material[] mat)
 {
     ChangeTexture.SetTexture(Shader.PropertyToID(propertyName), tex, mat);
 }