I have one question about opengl

Firstly, I installed three lib of opengl as follow,

• sudo apt-get install freeglut3_dev
• sudo apt-get install libxi-dev
• sudo apt-get install libxmu-dev

Then I created one simple c code

Code:

#include <GL/glut.h>
#include <stdlib.h>
#include <stdio.h>


void init(void)
{
    GLfloat mat_specular[]={1.0,1.0,1.0,1.0};
    GLfloat mat_shininess[]={50.0};
    GLfloat light_position[]={1.0,1.0,1.0,1.0};

    glClearColor(0.0,0.0,0.0,0.0);
    glShadeModel(GL_SMOOTH);
   
    glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);
    glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);
    glLightfv(GL_LIGHT0,GL_POSITION,light_position);

    glEnable(GL_LIGHTING);
    glEnable(GL_LIGHT0);
    glEnable(GL_DEPTH_TEST);

}
void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glutSolidSphere(1.0,40,50);
    glFlush();
}
void reshape(int w,int h)
{
    glViewport(0,0,(GLsizei)w,(GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    if(w<=h)
        glOrtho(-1.5,1.5,-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-10.0,10.0);
    else
        glOrtho(-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-1.5,1.5,-10.0,10.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
   
}
void keyboard(unsigned char key,int x,int y)
{
    switch(key)
    {
        case 27:
            exit(0);
            break;
    }
}
void main(int argc,char ** argv)
{
    printf("Compiled: "__DATE__" at "__TIME__"\n");
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(100,100);
    glutCreateWindow(argv[0]);
    init();
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
   
}

and, I compiled it via gcc ,
sudo gcc light.c -o light -lGL -lglut
The udoo system cannot work as well as the other real ubuntu sytem, can you tell me?

 

Please reference the attached file when I run the code on ubuntu system.
Thanks!

 

UDOO (like most other embedded systems) supports only OpenGL ES 2/3, a subset of OpenGL.
The headers can be installed from the imx-gpu-viv-9t6-dev package.

 

ok, I have install the package already now. If I use it , can you show one example code for draw on opengl es!
Thanks!

 

I'm sorry, I have never written OpenGL code.
You can try to search on google "linux opengl example". You can start from here.