I've been thinking of ways to render a rounded rectangle in libgdx. I haven't found a pre-built way in the documentation. I've looked at:

• ShapeRenderer, but that's apparently quite expensive performance-wise and I'll have to compose it of a polygon perhaps or use circles and rectangles.
• The Mesh class, which would probably perform well but is complex to use for such a simple shape. Again, I'd have to create the polygon myself with an algorithm for different sizes of rounded rectangles.

Can someone point me in the right direction?