As shown in figure 1 and figure 2, figure 1 from the perspective of the three-dimensional objects is normal, but the rotation to figure 2 view appears at the back of the hole post ran to the front to display the phenomenon, I have already started the depth test:
GlClear (GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
GlEnable (GL_DEPTH_TEST);
GlDepthFunc (GL_LEQUAL);

But I don't know why can appear such circumstance, also hope to get down to help wow, thank you!

Figure 1

Figure 2

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Search online tutorial "learning OpenGL 3 d games",

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Which chapter related content? If you know if you could help me to solve it? Compare the worry ~

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Note the difference between the left hand coordinate system and right hand coordinate system,

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How do you spin? Is a rotating object or change the viewpoints in the LookAt position?