Implement dynamic loading of slide resources

Implements loading of textures and images during runtime instead of load
time.
- Images which are not part of any slide are loaded at load time
- Master slide images are always loaded at load time
- Images used in a slide are loaded when the slide is entered
- Images are unloaded when slide is exited and any other slide does not
  use them

Task-number: QT3DS-3208
Change-Id: I7a827a5e828908efd2b104fe25374c66958319d2
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/Viewer/studio3d/q3dspresentation_p.h b/src/Viewer/studio3d/q3dspresentation_p.h
index 7ae7b945..c82e27a7 100644
--- a/src/Viewer/studio3d/q3dspresentation_p.h
+++ b/src/Viewer/studio3d/q3dspresentation_p.h
@@ -69,6 +69,7 @@ public:
     void setVariantList(const QStringList &variantList);
     void setViewerApp(Q3DSViewer::Q3DSViewerApp *app, bool connectApp = true);
     void setCommandQueue(CommandQueue *queue);
+    void setDelayedLoading(bool enable);
 
     void registerElement(Q3DSElement *element);
     void unregisterElement(Q3DSElement *element);
@@ -101,6 +102,7 @@ private:
     QUrl m_source;
     QStringList m_variantList;
     ViewerQmlStreamProxy *m_streamProxy;
+    bool m_delayedLoading;
 };
 
 QT_END_NAMESPACE