Yes, for the textures. Say you have a photo of a flower, and you want just the "fractual" shape of the flower to be applied to the surface of a face. The outer limit of the flower is the border of the texture. With jpg, you have to use the actual graphic of the flower, and then put some kind of border to make the texture into a polygonal shape, like a square or rectangle.You can't have just the flower unless you line up the edges to make a seemless graphic.
In vector graphics, the egde is the end... not like rasters which make invisible the squared edges. Say the frosted glass was made with vector curves as the texture. You could alternate the vector curves in a very small scale between opaque and transparent and in large scale, it should look frosted. Because the texture has it own curve, and the curvature of the face it is applied to, the light should bend in 4d basically.
I hope I explained that clearly.... I know what I am thinking in my head, and don't know if I can explain it correctly.
----------------------------------------
