title: Problem when using glutStrokeString instead of glutBitmapString
body: <p>I'm writing my first OpenGL-program (in C using freeglut). I have the following code in my display function, that works nicely and prints out a grey colored text:</p>
  
  <pre><code>glColor3f(0.5f, 0.5f, 0.5f);
  glRasterPos2f(0, 0);
  glutBitmapString(GLUT_BITMAP_HELVETICA_12, (unsigned char*)"some text");
  </code></pre>
  
  <p>Now I'd like to try glutStrokeString instead of glutBitmapString. In my (humble) understanding of the API, the following should work:</p>
  
  <pre><code>glScalef(0.003,0.003,1);
  glutStrokeString(GLUT_STROKE_ROMAN, (unsigned char*)"some text");
  </code></pre>
  
  <p>Running my program with this two lines instead of the glutBitmapString-call shows the text once before it disappears. Moreover from that point on all my texts displayed with glutBitmapString don't work either. What am I missing here?</p>