Add a CLUTTER_PAINT debug option to enable continous redrawing

When testing the performance of an application, it's often useful to
force it to continuously redraw instead of going idle to help measure
the frame rate. This just adds a CLUTTER_PAINT=continuous-redraw which
causes the master clock to queue a redraw on all of the stages
just before it prepares its source.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>

diff --git a/clutter/clutter-debug.h b/clutter/clutter-debug.h
index 75263fd..f4a9bf8 100644 (file)
--- a/clutter/clutter-debug.h
+++ b/clutter/clutter-debug.h
@@ -41,7 +41,8 @@ typedef enum {
   CLUTTER_DEBUG_REDRAWS                 = 1 << 2,
   CLUTTER_DEBUG_PAINT_VOLUMES           = 1 << 3,
   CLUTTER_DEBUG_DISABLE_CULLING         = 1 << 4,
-  CLUTTER_DEBUG_DISABLE_OFFSCREEN_REDIRECT = 1 << 5
+  CLUTTER_DEBUG_DISABLE_OFFSCREEN_REDIRECT = 1 << 5,
+  CLUTTER_DEBUG_CONTINUOUS_REDRAW       = 1 << 6
 } ClutterDrawDebugFlag;
 
 #ifdef CLUTTER_ENABLE_DEBUG

diff --git a/clutter/clutter-main.c b/clutter/clutter-main.c
index 7a2cdcd..105b4ac 100644 (file)
--- a/clutter/clutter-main.c
+++ b/clutter/clutter-main.c
@@ -183,7 +183,8 @@ static const GDebugKey clutter_paint_debug_keys[] = {
   { "redraws", CLUTTER_DEBUG_REDRAWS },
   { "paint-volumes", CLUTTER_DEBUG_PAINT_VOLUMES },
   { "disable-culling", CLUTTER_DEBUG_DISABLE_CULLING },
-  { "disable-offscreen-redirect", CLUTTER_DEBUG_DISABLE_OFFSCREEN_REDIRECT }
+  { "disable-offscreen-redirect", CLUTTER_DEBUG_DISABLE_OFFSCREEN_REDIRECT },
+  { "continuous-redraw", CLUTTER_DEBUG_CONTINUOUS_REDRAW }
 };
 
 #ifdef CLUTTER_ENABLE_PROFILE

diff --git a/clutter/clutter-master-clock.c b/clutter/clutter-master-clock.c
index 1d67924..ce8d70b 100644 (file)
--- a/clutter/clutter-master-clock.c
+++ b/clutter/clutter-master-clock.c
@@ -277,6 +277,20 @@ clutter_clock_prepare (GSource *source,
   int delay;
 
   clutter_threads_enter ();
+
+  if (G_UNLIKELY (clutter_paint_debug_flags &
+                  CLUTTER_DEBUG_CONTINUOUS_REDRAW))
+    {
+      ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
+      const GSList *stages, *l;
+
+      stages = clutter_stage_manager_peek_stages (stage_manager);
+
+      /* Queue a full redraw on all of the stages */
+      for (l = stages; l != NULL; l = l->next)
+        clutter_actor_queue_redraw (l->data);
+    }
+
   delay = master_clock_next_frame_delay (master_clock);
   clutter_threads_leave ();