[gtk+/wip/mir-gdkgl] mir: don't swap buffers when painting with gl

[Marco Trevisan <marcotrevi src gnome org>]

commit 53a9f3800ab692902707daf6c66bdc32ff99a008
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Wed Nov 19 14:41:05 2014 +0100

    mir: don't swap buffers when painting with gl
    
    This seems to break forever the egl_swap_buffers_with_damage support,
    but fixes rendering issues we had before.

 gdk/mir/gdkmirwindowimpl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/mir/gdkmirwindowimpl.c b/gdk/mir/gdkmirwindowimpl.c
index 90d4720..18f837e 100644
--- a/gdk/mir/gdkmirwindowimpl.c
+++ b/gdk/mir/gdkmirwindowimpl.c
@@ -677,7 +677,7 @@ gdk_mir_window_impl_end_paint (GdkWindow *window)
   GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
 
   //g_printerr ("gdk_mir_window_impl_end_paint window=%p\n", window);
-  if (impl->visible)
+  if (impl->visible && !window->current_paint.use_gl)
     send_buffer (window);
 }