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);
}