Currently, attempting to fetch the addresses of the procedures defined by GLX_ARB_create_context_robustness fails (at least on mesa drivers). We should use glXGetProcAddress to symbolicate at runtime.
Created attachment 8651249 [details] [diff] [review] Use glXGetProcAddress to link against GLX_ARB_create_context_robustness. Fairly straightforward patch, we do the same for linking against texture from pixmap. Thanks!