Add afterRendering signal to the Q3DSSurfaceViewer

This signal is sent after rendering but before the frame swap.

Task-number: QT3DS-3962
Change-Id: I7501df1ad2590da75fac2a9eb3e626ecaffc0158
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

2 files changed, 3 insertions, 0 deletions

diff --git a/src/api/studio3d/q3dssurfaceviewer.cpp b/src/api/studio3d/q3dssurfaceviewer.cpp
index e885a4b..401cb8f 100644
--- a/src/api/studio3d/q3dssurfaceviewer.cpp
+++ b/src/api/studio3d/q3dssurfaceviewer.cpp
@@ -534,6 +534,8 @@ void Q3DSSurfaceViewerPrivate::update()
 
             m_viewerApp->Render();
 
+            Q_EMIT q_ptr->afterRendering();
+
             const uint defaultFbo = m_context->defaultFramebufferObject();
 
             if (m_surface->surfaceClass() == QSurface::Window && m_fboId == defaultFbo)
diff --git a/src/api/studio3d/q3dssurfaceviewer.h b/src/api/studio3d/q3dssurfaceviewer.h
index 42be5c2..b9e4016 100644
--- a/src/api/studio3d/q3dssurfaceviewer.h
+++ b/src/api/studio3d/q3dssurfaceviewer.h
@@ -100,6 +100,7 @@ Q_SIGNALS:
     void presentationLoaded();
     void presentationReady();
     void frameUpdate();
+    void afterRendering();
     void errorChanged();
 
     void presentationIdChanged(const QString &id);