manpage: document x11probe OpenGL backend

Fixes #3994.
2017-01-06 22:40:59 +01:00
1 parent 7aca328eb1
commit d3eafc976d
@@ -4322,6 +4322,9 @@ The following video options are currently all specific to ``--vo=opengl`` and
        work.
    x11
        X11/GLX
+    x11probe
+        For internal autoprobing, equivalent to ``x11`` otherwise. Don't use
+        directly, it could be removed without warning as autoprobing is changed.
    wayland
        Wayland/EGL
    drm