title: Including GLSL files in project pane in a QTCreator CMake project
body: <p>I am working through the OpenGL tutorial here: <a href="http://www.opengl-tutorial.org/" rel="nofollow">OpenGL-Tutorial.org</a>, and want to use QTCreator and CMake to build the examples.</p>
  
  <p>Opening the root <code>CMakeLists.txt</code> file opens the project, which then builds/runs correctly (after following instructions on the website), but the fragment and vertex files do not show up in the projects pane. I have tried renaming them to <code>.frag</code>, <code>.vert</code> and <code>.glsl</code> with no effect. If I drag these files from a folder they open in the edit pane with correct syntax highlighting.</p>
  
  <p>How do I get these files to show up in the projects pane?</p>
  
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  <p>I am on Ubuntu 20.04 and have tried QTCreator from packages and the newest source on sourceforge.</p>