Emit new frame signals from the software backend

Introduce an autotest case too.

Change-Id: I658b09b6e4e5b30cdc2174fdf21f60adf93e44ff
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

2 files changed, 8 insertions, 0 deletions

diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp
index ad1f9cacf4..d9bb6780dd 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop.cpp
@@ -158,6 +158,8 @@ void QSGSoftwareRenderLoop::renderWindow(QQuickWindow *window, bool isNewExpose)
 
     emit window->afterAnimating();
 
+    emit window->beforeFrameBegin();
+
     cd->syncSceneGraph();
     rc->endSync();
 
@@ -196,6 +198,8 @@ void QSGSoftwareRenderLoop::renderWindow(QQuickWindow *window, bool isNewExpose)
         cd->fireFrameSwapped();
     }
 
+    emit window->afterFrameEnd();
+
     qint64 swapTime = 0;
     if (profileFrames)
         swapTime = renderTimer.nsecsElapsed();
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
index 0ba6e1994a..d25755e66f 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
@@ -477,6 +477,8 @@ void QSGSoftwareRenderThread::syncAndRender()
     const bool exposeRequested = (pendingUpdate & ExposeRequest) == ExposeRequest;
     pendingUpdate = 0;
 
+    emit exposedWindow->beforeFrameBegin();
+
     if (syncRequested)
         sync(exposeRequested);
 
@@ -537,6 +539,8 @@ void QSGSoftwareRenderThread::syncAndRender()
 
     qCDebug(QSG_RASTER_LOG_RENDERLOOP, "RT - rendering done");
 
+    emit exposedWindow->afterFrameEnd();
+
     if (exposeRequested) {
         qCDebug(QSG_RASTER_LOG_RENDERLOOP, "RT - wake gui after initial expose");
         waitCondition.wakeOne();