title: glGenerateMipmap or glGenerateMipmapEXT
body: <p>I need glGenerateMipmap* function, but I would like to know if there are any differences between:<code>glGenerateMipmap</code> and <code>glGenerateMipmapEXT</code>?</p>
  
  <p>I understand that EXT was before ARB so EXT version should work on older hardware? Are there any differences in behavior?</p>
  
  <p>another question:</p>
  
  <p>Can I use:</p>
  
  <pre><code>myGLGenerateMipmap = loadProcAddress("glGenerateMipmap")
  </code></pre>
  
  <p>or I should check support for the <code>GL_EXT_framebuffer_object</code> first?</p>
  
  <p>please note that I would not like to use GLEW/GLEE or any other libraries...</p>