I imported an obj file from maya and it works well with vex layer surface and vex super matiral. And I can see the uv attribute when I mmb click on the node.

When I created a simple texture shader in vops, globle var's s t->texture's ST, then texture's color ->lighting modle diff->output cf. When i render, the uv texture looks bad, it looks like raws and colums…..I think it is the s t problem, but tired many times, I can't get it out….