simple app, hidden surface removal glitches

[Gabriele Lanaro]

Hi! I'm trying to write a molecular viewer with pyglet. I've already developed a prototype with GLUT, which is working fine. I've ported the same code on pyglet but the result is that I have hidden surface removal issues. See the picture to understand what I mean. The cylinder should be displayed as they were inside of the sphere. As an additional information, if I try with the  wxpython opengl context I have the exact same problem.

The initialization code (the drawing take place in a subclass) is in this pastebin: http://pastebin.com/E5dwYke7

Did you ever had a problem with hidden surface removal? How to make it work correctly?

[Tristam MacDonald]

Try enabling depth testing.

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Tristam MacDonald

System Administrator, Suffolk University Math & CS Department

http://swiftcoder.wordpress.com/

[Gary Herron]

It looks like you don't have depth testing on. 

Make sure you have a depth buffer bu including a config parameter in the pyglet.window.Window.__init__ call

      config=Config(depth_size=24, ...)

AND that depth testing is on:
        glEnable(GL_DEPTH_TEST)

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[Gabriele Lanaro]

Thank you! Yes, enabling depth testing makes things work.