problems about the display

[ronghuaiyang]

hi:
thank you very much for sharing the code.
when i run the demo, there is some problem about the opengl display. First, I add the glEnable( GL_CULL_FACE ) to disable the back of the face. then i rotate the 3d model to the left, the display becomes like this:

there something wrong about the nose area. but when i rotate to the right, the display is all right:

so, can you help me to solve this problem?
thanks very much !

[junyanz]

Thanks for your fixes. There might be some issues about visibility test in the code. I haven't had a chance to fix them.