Installing OpenGL + GLUT on Kubuntu 9.04
I'm taking a Computer Graphics class, and during the first week we need to install OpenGL and write a first, very simple program. I looked around for tutorials and couldn't find any simple ones, so I've compiled one below.
This tutorial should help you install OpenGL + Glut on Debian-based Linux distributions.
My OS: Kubuntu 9.04 i386 (32 bit)
Installing GLUT:
sudo apt-get install freeglut3 glut-doc
In my case, I had to install an nvidia driver as well:
sudo apt-get install nvidia-glx-180-dev
For some of you, this might not be the case, and the mesa-common package would work:
sudo apt-get install mesa-common-dev
Then (and here's the part that got me worried), you can try testing a simple example, but I got this error:
OpenGL GLX extension not supported by display ':0.0'
To fix this, it was much simpler than I thought -- I just needed to reboot. (If you don't want to, for some reason, restarting X should work just fine.) If this problem doesn't go away, I found a couple of resources in my search before rebooting, here and here.
After setting this up, I looked up tutorials, and decided to use this simple example: (found here)
#include <GL/glut.h>
#define window_width 640
#define window_height 480
// Main loop
void main_loop_function()
{
// Z angle
static float angle;
// Clear color (screen)
// And depth (used internally to block obstructed objects)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Load identity matrix
glLoadIdentity();
// Multiply in translation matrix
glTranslatef(0,0, -10);
// Multiply in rotation matrix
glRotatef(angle, 0, 0, 1);
// Render colored quad
glBegin(GL_QUADS);
glColor3ub(255, 000, 000); glVertex2f(-1, 1);
glColor3ub(000, 255, 000); glVertex2f( 1, 1);
glColor3ub(000, 000, 255); glVertex2f( 1, -1);
glColor3ub(255, 255, 000); glVertex2f(-1, -1);
glEnd();
// Swap buffers (color buffers, makes previous render visible)
glutSwapBuffers();
// Increase angle to rotate
angle+=0.25;
}
// Initialze OpenGL perspective matrix
void GL_Setup(int width, int height)
{
glViewport( 0, 0, width, height );
glMatrixMode( GL_PROJECTION );
glEnable( GL_DEPTH_TEST );
gluPerspective( 45, (float)width/height, .1, 100 );
glMatrixMode( GL_MODELVIEW );
}
// Initialize GLUT and start main loop
int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitWindowSize(window_width, window_height);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutCreateWindow("GLUT Example!!!");
glutIdleFunc(main_loop_function);
GL_Setup(window_width, window_height);
glutMainLoop();
}
Thanks! I'm eager to update this tutorial with more information, so if you're having problems, let me know!