Change Details

KWin expects Qt to produce xcb_glx_buffer_swap_complete_event_t events with DRI2, but Qt 5.12 initializes GLX integration only when required, e.g. when a window with OpenGL support is created or when availability of OpenGL is checked. So use QOpenGLContext::supportsThreadedOpenGL() to force initialization of GLX integration in the Qt's xcb plugin. https://bugzilla.opensuse.org/show_bug.cgi?id=1120090

Mesa requires XESetWireToEvent xlib callbacks to be called when DRI2 is used. This is done by the GLX integration in the Qt's xcb plugin, but Qt 5.12 initializes the GLX integration only when required, e.g. when a window with OpenGL support is created or when availability of OpenGL is checked. So force initialization of the GLX integration by calling QOpenGLContext::supportsThreadedOpenGL(). https://codereview.qt-project.org/#/c/6557/ https://bugzilla.opensuse.org/show_bug.cgi?id=1120090

KWin expects Qt to produce xcb_glx_buffer_swap_complete_event_tMesa requires XESetWireToEvent xlib callbacks to be called when DRI2 is used. This is done by the GLX integration in events with DRI2the Qt's xcb plugin, but Qt 5.12 initializes the GLX integration onlyon only when required, e.g. when a window with OpenGL support is created or when availability of OpenGL is checked. So use So force initialization of the GLX integration by calling QOpenGLContext::supportsThreadedOpenGL() to force. initialization of GLX integration in the Qt's xcb plugin. https://codereview.qt-project.org/#/c/6557/ https://bugzilla.opensuse.org/show_bug.cgi?id=1120090