Enable full performance mode! (LP: #1502738)

There's always some risk, but finally it seems the blocking bugs are fixed:
    LP: #1391261, LP: #1497828
So you now require Mir 0.16+ and if you're using Unity8, also a
newish version of QtMir from Jan 2016 or later. Otherwise this change could
cause freezes.

1 files changed, 8 insertions, 5 deletions

diff --git a/hw/xmir/xmir.c b/hw/xmir/xmir.c
index 613f1b5..aac24a5 100644
--- a/hw/xmir/xmir.c
+++ b/hw/xmir/xmir.c
@@ -773,13 +773,16 @@ xmir_realize_window(WindowPtr window)
         xmir_screen->flatten_top = xmir_window;
     mir_surface_set_event_handler(xmir_window->surface, xmir_surface_handle_event, xmir_window);
 
-#if 0
-    /* Until recently (LP: #1391261) Mir's Android platform was still too buggy
-     * to deal with this. But we're also still blocked by Unity8 bugs:
-     * TODO: Fix bug LP: #1497828 to enable this in Unity8 (including ARM)
+    /*
+     * Traditional X apps actually get zero throttling, so an interval of
+     * zero is most appropriate, and of course avoids lag and provides
+     * maximum frame rates.
+     * This does however overclock DRI2 GLX clients who want an interval of
+     * one, but they are a tiny minority and much less important than
+     * minimizing lag right now. We'll fix that later. (LP: #1211186)
      */
     mir_surface_set_swapinterval(xmir_window->surface, 0);
-#endif
+
     xmir_window_enable_damage_tracking(xmir_window);
 
     if (xmir_screen->glamor)