title: Using gluPerspective()
body: <p>I'm learning OpenGL; I managed to make my first 2D program but I am stuck on using gluPerspective. </p>
  
  <p>I'm trying a little test to try to grasp how I can go about making a 3D project but I can't seem to figure out what I am missing and what is needed to make this small test work: </p>
  
  <pre><code>void init_perspective()
  
  {
  
  SDL_Init(SDL_INIT_EVERYTHING); 
  SDL_SetVideoMode(640, 480, 32, SDL_OPENGL); 
  SDL_WM_SetCaption( "OpenGL Test", NULL ); 
  
  glClearColor( 0, 0, 0, 0 ); 
  glMatrixMode( GL_PROJECTION );
  glLoadIdentity();
  gluPerspective(45, 1.333, 0, 100); 
  glMatrixMode( GL_MODELVIEW );
  glLoadIdentity();
  glClear( GL_COLOR_BUFFER_BIT );
  
  }
  
  int main( int argc, char **argv)
  
  {
  
  init_perspective();
  
  glTranslatef( 200, 200, 50 );
  glColor4f(1.0,1.0,1.0,1.0);
  
  glBegin(GL_QUADS);
  
      glVertex3f(0, 0 ,0);
      glVertex3f(50,0 ,10);
      glVertex3f(50,50,30);
      glVertex3f(0, 50,0);
  
  glEnd();
  
  glLoadIdentity();
  
  SDL_GL_SwapBuffers();
  
  SDL_Delay(1000);
  
  SDL_Quit();
  
  return 0;
  
  }
  </code></pre>
  
  <p>If anybody could tell me what function calls I could use and are missing in this test code so I could have a play around and learn how 3D OpenGL works I would be grateful. </p>