title: ATI Radeon HD 5770 GPU OpenGL 4.1 support?
body: <p>I have a ATI Radeon HD 5770 GPU on a 2012 Mac Pro. </p>
  
  <p>When I run the following code in my program:</p>
  
  <pre><code>    std::cout &lt;&lt; glGetString(GL_RENDERER) &lt;&lt; std::endl;
      std::cout &lt;&lt; glGetString(GL_VENDOR) &lt;&lt; std::endl;
      std::cout &lt;&lt; glGetString(GL_VERSION) &lt;&lt; std::endl;
      std::cout &lt;&lt; glGetString(GL_SHADING_LANGUAGE_VERSION) &lt;&lt; std::endl;
  </code></pre>
  
  <p>The output I get is as follows:</p>
  
  <pre><code>    ATI Radeon HD 5770 OpenGL Engine
      ATI Technologies Inc.
      2.1 ATI-1.24.35
      1.20
  </code></pre>
  
  <p>But using OpenGL Extensions Viewer I get the following
  <img src="https://i.stack.imgur.com/wOI6m.png" alt="enter image description here"></p>
  
  <p>Is there a way I can use 4.1? Why does it keep telling me that the version is 2.1?</p>