Vectorworks 2015 has made huge improvement to textures. Textures can now have a surface hatch. The surface hatch will only appear when you view your model in hidden line rendering. If you set up your surface hatches correctly on your textures, you will see the normal part of the texture when you view your model in the rendered view, and you’ll see the surface hatch (the lines) when you view your model and hidden line rendering. The feedback from my clients so far is that this is a huge improvement. If you watch this movie you will see one scene where you can see some viewports and hidden line rendering and one viewport in OpenGL rendering, all using the same textures from the same model, but giving completely different views of the model.