Adjust for pipeline stalls

Bug: 20853441

Calculating duration that crosses the UI-RT
sync point will now subtract out the time spent waiting
in queue under the assumption that this time will be
accounted for in the previous frame's metrics

Change-Id: Ia8213f4410638840613f5ae439e98dfb77532a6a

1 files changed, 2 insertions, 4 deletions

diff --git a/libs/hwui/FrameInfoVisualizer.h b/libs/hwui/FrameInfoVisualizer.h
index f1dc954..cf877c4 100644
--- a/libs/hwui/FrameInfoVisualizer.h
+++ b/libs/hwui/FrameInfoVisualizer.h
@@ -59,10 +59,8 @@ private:
     void drawGraph(OpenGLRenderer* canvas);
     void drawThreshold(OpenGLRenderer* canvas);
 
-    inline float duration(size_t index, FrameInfoIndex start, FrameInfoIndex end) {
-        nsecs_t ns_start = mFrameSource[index][start];
-        nsecs_t ns_end = mFrameSource[index][end];
-        float duration = ((ns_end - ns_start) * 0.000001f);
+    inline float durationMS(size_t index, FrameInfoIndex start, FrameInfoIndex end) {
+        float duration = mFrameSource[index].duration(start, end) * 0.000001f;
         // Clamp to large to avoid spiking off the top of the screen
         duration = duration > 50.0f ? 50.0f : duration;
         return duration > 0.0f ? duration : 0.0f;