Don't use fabric.
And don't use rocks.

I would use only mulch- it degrades and nourishes the earth, it keeps moisture in the soil, and helps keep roots cool.
Plus when you refresh it every year or so it makes everything look all new again.
Rocks, once put down, are forever and someday somehow you will want them gone and be unable to gather them all up. You'll be forced to hire neighborhood kids for a penny a rock.
They just become unsightly and bake everything underneath.
As far as the fabric there are varying viewpoints but I do not find that it suppresses weeds all that well (birds still drop seeds that germinate on top) and there is evidence that it disrupts gas exchange and beneficial soil organisms. Roots need air.

Second that!! I agree with everything in the previous post - no rocks, no weed cloth. Both create a lot more work than they prevent.

Dirt drifts into the rocks and then you get weeds growing in it anyhow. Mulch feeds the soil, is easy to work through.

Rock would probably be better at blocking weeds, but wouldn't black rock get awfully hot in the summer, and cook the plants?