I know there was a lot of ties with textured surface some 20 years ago. It helps a little against reflection, but is also has downsides as more problem with the front contacts. So I am not sure of a textured surface is actually used. A good flat anti reflective layer is also quite good in giving the typical slightly bluish tint to the cells. The blue color comes from the AR coating getting less effective to the ends. We can't see the IR end obviously.
One can get good good performance also with a flat surface - at university I have tested a prototype cell getting around 24 % efficiency (quite close to the record mark at that time) with a standard flat surface, just clean material and a reflecting back side contact.
Light trapping may be an issue with the thinner cells, less with classical crystalline silicon.