title: GLFW window creation options affecting the HarfBuzz
body: <p>I am using HarfBuzz along with freetype to render regional language hindi.</p>
  
  <p>If I write these three optins for window creation than  the font does not render and  I only see the blank screen.</p>
  
  <pre><code>glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
  </code></pre>
  
  <p>Without these three options the font renders correctly.</p>
  
  <p>I am curious to know what difference these options make in window creation?</p>