[mutter] compositor: Trace pre/post paint functions

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit a14fd1b955c9148f5ba0add1c1e156c3482fa207
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue Aug 27 13:14:21 2019 +0300

    compositor: Trace pre/post paint functions
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/757

 src/compositor/compositor.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index 4581d50dd..1ab65ed5a 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -61,6 +61,7 @@
 #include "backends/x11/meta-event-x11.h"
 #include "backends/x11/meta-stage-x11.h"
 #include "clutter/clutter-mutter.h"
+#include "cogl/cogl-trace.h"
 #include "compositor/meta-window-actor-x11.h"
 #include "compositor/meta-window-actor-wayland.h"
 #include "compositor/meta-window-actor-private.h"
@@ -1080,6 +1081,8 @@ meta_compositor_real_pre_paint (MetaCompositor *compositor)
 static void
 meta_compositor_pre_paint (MetaCompositor *compositor)
 {
+  COGL_TRACE_BEGIN_SCOPED (MetaCompositorPrePaint,
+                           "Compositor (pre-paint)");
   META_COMPOSITOR_GET_CLASS (compositor)->pre_paint (compositor);
 }
 
@@ -1127,6 +1130,8 @@ meta_compositor_real_post_paint (MetaCompositor *compositor)
 static void
 meta_compositor_post_paint (MetaCompositor *compositor)
 {
+  COGL_TRACE_BEGIN_SCOPED (MetaCompositorPostPaint,
+                           "Compositor (post-paint)");
   META_COMPOSITOR_GET_CLASS (compositor)->post_paint (compositor);
 }