svenskmand
August 10th, 2008, 02:44 AM
Hello Everyone,
I have a problem with compiling a simple OpenGL example. I have installet GLUT with the commands:
sudo apt-get install glutg3 libglut3 libgl1-mesa-glx
and then i compile this simple example (notice that this program had compiled before I upgraded to Hardy 8.04) with the commandline:
gcc OpenGL.c -o test -lglut
the example code is:
#include <GL/gl.h> // /usr/include/GL/gl.h
#include <GL/glut.h> // /usr/include/GL/glut.h
// Compiles with "gcc OpenGL.c -o test -lglut" on linux
void display(void)
{
/* clear all pixels */
glClear (GL_COLOR_BUFFER_BIT);
/* draw white polygon (rectangle) with corners at
* (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)
*/
glColor3f (1.0, 1.0, 1.0);
glBegin(GL_POLYGON);
glVertex3f (0.25, 0.25, 0.0);
glVertex3f (0.75, 0.25, 0.0);
glVertex3f (0.75, 0.75, 0.0);
glVertex3f (0.25, 0.75, 0.0);
glEnd();
/* don't wait!
* start processing buffered OpenGL routines
*/
glFlush ();
}
void init (void)
{
/* select clearing (background) color */
glClearColor (0.0, 0.0, 0.0, 0.0);
/* initialize viewing values */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
}
/*
* Declare initial window size, position, and display mode
* (single buffer and RGBA). Open window with "hello"
* in its title bar. Call initialization routines.
* Register callback function to display graphics.
* Enter main loop and process events.
*/
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (250, 250);
glutInitWindowPosition (100, 100);
glutCreateWindow ("hello");
init ();
glutDisplayFunc(display);
glutMainLoop();
return 0; /* ISO C requires main to return int. */
}
I've also noticed that the files /usr/include/GL/gl.h and /usr/include/GL/glut.h is not there anymore and I therefore suspect that I haven't installet GLUT properly :confused:
Best Regards.
I have a problem with compiling a simple OpenGL example. I have installet GLUT with the commands:
sudo apt-get install glutg3 libglut3 libgl1-mesa-glx
and then i compile this simple example (notice that this program had compiled before I upgraded to Hardy 8.04) with the commandline:
gcc OpenGL.c -o test -lglut
the example code is:
#include <GL/gl.h> // /usr/include/GL/gl.h
#include <GL/glut.h> // /usr/include/GL/glut.h
// Compiles with "gcc OpenGL.c -o test -lglut" on linux
void display(void)
{
/* clear all pixels */
glClear (GL_COLOR_BUFFER_BIT);
/* draw white polygon (rectangle) with corners at
* (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)
*/
glColor3f (1.0, 1.0, 1.0);
glBegin(GL_POLYGON);
glVertex3f (0.25, 0.25, 0.0);
glVertex3f (0.75, 0.25, 0.0);
glVertex3f (0.75, 0.75, 0.0);
glVertex3f (0.25, 0.75, 0.0);
glEnd();
/* don't wait!
* start processing buffered OpenGL routines
*/
glFlush ();
}
void init (void)
{
/* select clearing (background) color */
glClearColor (0.0, 0.0, 0.0, 0.0);
/* initialize viewing values */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
}
/*
* Declare initial window size, position, and display mode
* (single buffer and RGBA). Open window with "hello"
* in its title bar. Call initialization routines.
* Register callback function to display graphics.
* Enter main loop and process events.
*/
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (250, 250);
glutInitWindowPosition (100, 100);
glutCreateWindow ("hello");
init ();
glutDisplayFunc(display);
glutMainLoop();
return 0; /* ISO C requires main to return int. */
}
I've also noticed that the files /usr/include/GL/gl.h and /usr/include/GL/glut.h is not there anymore and I therefore suspect that I haven't installet GLUT properly :confused:
Best Regards.