[4.0] Fix to avoid render-task waiting forever

We require a finished signal to be emitted after rendering to the screen,
i.e. to know when the scene has been rendered for the 1st time.

Unfortunately RenderTask SetRefreshRate(REFRESH_ONCE) is causing scene updates to run forever.
This is is due to the mWaitingToRender flag which in that case will never be set to false

Change-Id: I031c05e09c2a00117b74110be601fccaf1e3126a

diff --git a/dali/internal/update/render-tasks/scene-graph-render-task.cpp b/dali/internal/update/render-tasks/scene-graph-render-task.cpp
index 7d2ced8..d4305b9 100644 (file)
--- a/dali/internal/update/render-tasks/scene-graph-render-task.cpp
+++ b/dali/internal/update/render-tasks/scene-graph-render-task.cpp
@@ -301,6 +301,7 @@ void RenderTask::UpdateState()
       }
       else
       {
+        mWaitingToRender = false;
         mNotifyTrigger = true;
       }
     }