Something wrong with the window buffering

[Dr.Shepherd]

Hi, there,

I got some problem with the window buffering. Please look at the following pictures:

The original and correct one

Screenshot-1.png (130.34 KiB) Viewed 2497 times

Window generated by me

Screenshot.png (154.08 KiB) Viewed 2497 times

What I want to do is to extract the DynamicControl Demo and develop further controller on it.

Any idea on why this happens ? I think it is something related with GL/GLU/GLUT, but not familiar with that.

Cheers !