Textured glass is a rolled, patterned glass with the design impressed onto one side of the surface. It makes the glass translucent and non-transparent, distorting views while also letting in plenty of light. Designs vary from simple ripples and reeded lines to more decorative florals,
If you do plan to change your layout, measure your bathroom carefully. Note the position of doors windows and any pipes. It might help to draw an outline on graph paper, or use an online design tool.