I have an obj model whose top has several faces(THis model is an exhibition center. Its top is build very complicatedly ). So, when set "dollhouse" view, I can't view into the model. To solve this problem, I remove the model's top. At the same time, I use pano to provide texture to model and set "depthmap.background=pano" . When I walk in the model, the "background" affects the transition. It looks really unnaturally. How can I solve this problem? Thanks very much.