According to an old thread (titled: “Is it possible to smooth coarse graphics?”) the current work-around to achieve anti-aliasing for vector graphics is to treat it as a texture; drawing it at twice the intended scale and then shrinking it by 50%.
Not really a fan of that technique. Apparently, there is the option of using the GPU to render smooth/anti-aliased vector graphics directly, which promises to offer better fidelity.
Found a few papers on the topic that makes the approach seem viable:
Are there any plans to support/implement GPU based path rendering in Heaps at some point in the (preferably near) future?