t.addVertexWithUV(0, 0, 0, 0, 0);
t.addVertexWithUV(0, 1, 0, 0, 1);   Vertical quad, it works
t.addVertexWithUV(1, 1, 0, 1, 1);
t.addVertexWithUV(1, 0, 0, 1, 0);



	t.addVertexWithUV(0, 0, 0, 0, 0);
        t.addVertexWithUV(0, 0, 1, 0, 1); Horizontal quad, not visible
        t.addVertexWithUV(1, 0, 1, 1, 1);
        t.addVertexWithUV(1, 0, 0, 1, 0);