PMG

#include <GL/glut.h>

GLfloat Light_pos[] = ( -0.5,-0.5,-2.0,1.0 );

void display (void)
{
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
   glutSolidSphere(0.5,15,15);
   glPopMatrix();
   glutSwapBuffers();
}

int main(int argc, char **argv)
{
    glutInit(&argc,argv);
   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
   glutCreateWindow("Sphpere3D");
   glutDisplayFunc (display);


   glLightfv(GL_LIGHT0, GL_POSITION, Light_pos);
   glEnable(GL_LIGHT0);
   glEnable(GL_LIGHTING);

   glutMainLoop();
   return 0;
}