D3d vertex texture

Explanation
The parameters xtex and ytex will usually lie between 0 and 1. 0 being the left/top of the texture and 1 being right/bottom of the texture. All points in between can be represented using a number between 0 and 1. You can however put a number greater than 1 if you want the texture to repeat along the surface. You must set (true) to achieve this effect.