gltest.c

#include <stdlib.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>

// See: http://nehe.gamedev.net/tutorial/lessons_01__05/22004/

/* Render a frame */
void DrawGLScene(void)
{
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  
  glBegin(GL_TRIANGLES);
    glVertex3f(-0.5,-0.5,0.0);
    glVertex3f(0.5,0.0,0.0);
    glVertex3f(0.0,0.5,0.0);
  glEnd();
  
  glutSwapBuffers();
}


/* Initialisation */
int main(int argc, char** argv)
{
  /* Initialise glut */
  glutInit(&argc, argv);
  glutInitWindowSize(600, 400);
  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
  glutCreateWindow("Test Window");
  
  /* Setup callbacks */
  glutDisplayFunc(&DrawGLScene);  
  
  /* Initialise OpenGL */
//   glEnable(GL_DEPTH_TEST);
//   glDepthFunc(GL_LESS);
//   glShadeModel(GL_SMOOTH);

  /* Run the main loop */
  glutMainLoop();
  
  return 0;
}