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Beginner's Question

Started by abvenia May 13, 2004 at 7:49 AM 2 replies 450+ views

Original Post

May 13, 2004 at 7:49 AM

I''m just starting OpenGL; and was trying a NeHe Lesson (albeit a modifyed one) in Linux The program should be making the object rotate on the Y-axis; but it will only advance to the next frame of rotation if the mouse hovers over one of the window buttons (like minimize) and then moves back onto the window. I think it must be some kind of refresh or redraw problem; but I can''t seem to fix it. Thanks for your time! -Chance

iNsAn1tY

120

iNsAn1tY

May 13, 2004 at 8:44 AM

Sounds like the code which handles your rendering has been accidentally tied to the code handling messaging. Therefore, the rendering only occurs when your program recieves messages. However, I wrote this thinking of Win32, completely forgetting you're using Linux. I'm not sure how Linux works, so I can't advise you any more...

[edited by - iNsAn1tY on May 13, 2004 9:53:50 AM]

CProgrammer

113

CProgrammer

May 13, 2004 at 9:08 AM

Well youre probably using SDL(or something else? qt or the like) so check your main game loop and make sure it continuously renders even when no event messages are received.
How bout'' you post the main game loop here.
-CProgrammer

abvenia

Author

abvenia

May 13, 2004 at 10:42 AM

I have solved the problem; only to come across another. The problem was that the displayfunction was not flagging that the scene needed to be redrawn. Now I''ve got issues with rotating a 3d cone about its point: but I can probably struggle though that too.

Thanks!

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