e the context and window while others use GLUT or SDL, but remember that OpenGL itself always works the same.</p>
<h2><a class="anchor" id="quick_timer"></a>
Reading the timer</h2>
<p>To create smooth animation, a time source is needed. GLFW provides a timer that returns the number of seconds since initialization. The time source used is the most accurate on each platform and generally has micro- or nanosecond resolution.</p>
<div class="fragment"><div class="line"><span class="keywordtype">double</span> ti