GL normally. In this tutorial, a multi-colored rotating triangle will be rendered. The framebuffer size needs to be retrieved for <code>glViewport</code>.</p>
<div class="fragment"><div class="line"><span class="keywordtype">int</span> width, height;</div><div class="line"><a class="code" href="group__window.html#ga0e2637a4161afb283f5300c7f94785c9">glfwGetFramebufferSize</a>(window, &amp;width, &amp;height);</div><div class="line">glViewport(0, 0, width, height);</div></div><!-- fragment --><p>You can also 