   inconsistent winding and smooth shading
  Hello I am facing the same problem like in this link.http://www.gamedev.net/community/forums/ViewReply.asp?id=3152685i.e I have inconsistent winding and I have to do smooth shading I have no problem with flat because I just can use two side lighting.Maybe If had some way to know what normals did two sided lighting flipped I could get the right normals and do the averaging according to the modelDo anyone have some suggestions?Thank you   
  Ok, so from what I gather from the last 5 times you posted this same topic, your mesh is randomly wound and your normals are not even pointing in the correct direction, and you don't have any idea which normals are pointed in the right way.Unfortunately there's not some magic switch you can turn on to make OpenGL understand your jumbled mesh. You need to find some way to fix your mesh (either through a modelling program or your own script), or get a different one. For two sided lighting to work, your normals must be aligned with the front face of the polygon. When you enable two sided lighting, it takes the normal on the front face, flips it, and applies it to the back face. If the normal is wrong on the front face, it will also be wrong on the back face, so this won't solve your problem.   ;  Well but it did solved at least for flat shading because what he thought that was back face he flipped it and that exactly what I want because I don't really have a back faces just incorrect winding   