Render Qml efficiently on GraphicsView
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Hi all,
My code is below.
How do I efficiently render qml on graphicsView? my animation qml is appearing very slow when rendered in QDeclarativeEngine. Is there a way to optimise it at the c++ level?
It was running ok at qml level.
Thank you
@
int main(int argc, char *argv)
{
QApplication app(argc, argv);
GraphicsView view;
view.setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
OpenGLScene scene = new OpenGLScene;
// provides an environment for instantiating QML components
QDeclarativeEngine engine;
// encapsulates a QML component definition
QDeclarativeComponent component(&engine, QUrl::fromLocalFile("BounceAnimation.qml"));
// creates the graphics item for QML at the engine's root context
QDeclarativeItem *item = qobject_cast<QDeclarativeItem *>(component.create());
// set position of item
item->setPos(10,500);
scene->addItem(item);
view.setScene(scene);
view.show();
view.resize(1024, 2000);return app.exec();}
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"This":http://doc.qt.nokia.com/4.7-snapshot/qdeclarativeview.html#details might help you.
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Thanks Lukas for the reply.
Is there render performance difference comparing the QDeclarativeView with QDeclarativeEngine?
Also, i did the following but the qml rendering is still not smooth. Any other advices? anyone?
@ scene->setStickyFocus(true);
scene->setItemIndexMethod(QGraphicsScene::NoIndex);@