38     : mpImpl(new OpenGLContext_Impl)  in OpenGLContext()
45     if(mpImpl->ctx)  in ~OpenGLContext()
47         glXMakeCurrent(mpImpl->dpy, None, NULL);  in ~OpenGLContext()
52         glXDestroyContext(mpImpl->dpy, mpImpl->ctx);  in ~OpenGLContext()
54     XFree(mpImpl->vi);  in ~OpenGLContext()
55     delete mpImpl;  in ~OpenGLContext()
60     mpImpl->dpy = XOpenDisplay(NULL);  in init()
62     if( mpImpl->dpy == NULL )  in init()
68     Window root = DefaultRootWindow(mpImpl->dpy);  in init()
71     mpImpl->vi = glXChooseVisual(mpImpl->dpy, 0, att);  in init()
73     if( mpImpl->vi == NULL )  in init()
79     Colormap cmap = XCreateColormap(mpImpl->dpy, root, mpImpl->vi->visual, AllocNone);  in init()
85 …mpImpl->win = XCreateWindow(mpImpl->dpy, root, 0, 0, 600, 600, 0, mpImpl->vi->depth, InputOutput, …  in init()
87     XMapWindow(mpImpl->dpy, mpImpl->win);  in init()
88     XStoreName(mpImpl->dpy, mpImpl->win, "Test Window");  in init()
90     mpImpl->ctx = glXCreateContext(mpImpl->dpy,  in init()
91                                     mpImpl->vi,  in init()
94     if( mpImpl->ctx == NULL )  in init()
100     if( !glXMakeCurrent( mpImpl->dpy, mpImpl->win, mpImpl->ctx ) )  in init()
126     XMoveResizeWindow(mpImpl->dpy, mpImpl->win, nX, nY, nWidth, nHeight);  in setWinPosAndSize()
131     XResizeWindow(mpImpl->dpy, mpImpl->win, nWidth, nHeight);  in setWinSize()
136     glXMakeCurrent( mpImpl->dpy, mpImpl->win, mpImpl->ctx );  in makeCurrent()
141     glXMakeCurrent(mpImpl->dpy, None, NULL);  in resetCurrent()
146     glXSwapBuffers(mpImpl->dpy, mpImpl->win);  in swapBuffers()
152     XSync(mpImpl->dpy, false);  in sync()