private void TestMosaics()
        {
            Vector2   size   = SpriteUtility.GetRealSize(output);
            Texture2D sTex   = source.sprite.texture;
            var       outTex = new Texture2D(sTex.width, sTex.height, format, sTex.mipmapCount > 0);

            GraphicUtility.Mosaics(sTex, ref outTex, mosaicSize);

            Vector2 pivot = new Vector2(0.5f, 0.5f);

            output.sprite = Sprite.Create(outTex, new Rect(0f, 0f, outTex.width, outTex.height), pivot);
            output.color  = Color.white;
            SpriteUtility.SetRealSize(output, size.x, size.y);
        }