The authors released the accompanying source code on GitHub under a permissive license. Search for OpenGL-SuperBible (different book, similar level) or opengl-redbook-10e . Reading the code is often 80% as good as reading the book if you are an intermediate programmer.
Moreover, countless industries rely on OpenGL: CAD (AutoCAD, SolidWorks), scientific visualization (Paraview, VTK), embedded systems (QT, Wayland compositors), and even some mobile game engines via EGL. The 10th edition remains the most concise guide to these production-ready techniques. opengl programming guide 10th edition pdf exclusive