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Asked: 2026-05-13T12:24:12+00:00

I have simplified my problem to this example: #include <GL/glut.h> int main(int argc, char**

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I have simplified my problem to this example:

#include <GL/glut.h>

int main(int argc, char** argv)
{
    glutInit(&argc, argv);

    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowSize (600, 600);
    glutInitWindowPosition( 0, 0 );

    int win = glutCreateWindow("Recon");

    return 0;
}

When it executes the glutCreateWindow, it takes about 1 minute and the screens flicker several times.

This is ridiculously long. This can’t be normal.

Environment:

  • Fedora 10
  • Dual NVIDIA GTX280 cards driving 3 monitors.
  • NVIDIA driver version 190.53 CUDA 2.3 installed
  • gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC)

Any ideas as to what could be wrong?

Edit: I have no display function because my ultimate goal is to create a rendering context so that I can create a Pixel Buffer Object from some CUDA code (which for the moment is not going to be displaying its output. I have also tried creating a context with a series of glx calls with the same delay and flickering happening when gkxMakeCurrent is called.

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1 Answer

  1. Editorial Team

    Do you have a display function?
    I’m not sure if this will help, but maybe putting in a display function in which you clear the buffers might help?

    e.g.
    glutDisplayFunc(myDisplay);

    void myDisplay()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the screen
    glutSwapBuffers();
}

    What compiler are you using? And, have you looked into any possible performance issues associated with Fedora 10 and openGL (I’m looking into the second bit right now).

    Edit: There are definitely some anecedotal stories of a performance hit in Fedora 10
    Here and Here. The second one seems to describe at least one of your symptoms. Are you able to try your code on another OS?

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