QWebView low FPS rate

matteo

Hi, I'm new to qt, right now i'm using qt creator 3.1.0 based on qt 5.2.1. I'm trying to display an html page containing the "Cesium ":http://cesiumjs.org/ globe written in javascript using WebGL features.
I'm facing with fluency issues since that my application can't reach the 60 FPS rate reached with the chrome browser.
I have tried to to use both QWebView and QGraphicsWebView and to load in the page both my html file from qrc and a page directly from the internet like this one: http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html
(loading directly from internet the application freezes).
Here there is my code:

@#include <QApplication>
#include <QWebView>
#include <QWebPage>
#include <QGraphicsView>
#include <QGraphicsWebView>
#include <QGLWidget>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);

int width = 1500;
int height = 900;

/*  
//using QWebView
QWebSettings::globalSettings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::WebGLEnabled, true);
QWebView *webView = new QWebView();
webView->load(QUrl("qrc:/Resources/NewFile.html"));
//webView->load(QUrl("http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html"));
webView->resize(width, height);
webView->show();
*/


//using QGraphicsWebView
QGraphicsView *gview;
QGraphicsScene *scene;
QGraphicsWebView *web_view;

QWebSettings::globalSettings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::WebGLEnabled, true);
gview = new QGraphicsView();
gview->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
gview->setViewport(new QGLWidget());

scene = new QGraphicsScene(gview);
web_view = new QGraphicsWebView();

scene->addItem(web_view);
gview->setScene(scene);

web_view->load(QUrl("qrc:/Resources/NewFile.html"));
//web_view->load(QUrl("http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html"));

web_view->resize(width, height);
gview->resize(width+50, height+50);
gview->show();

return a.exec&#40;&#41;;

}@

I don't now if that issue depends on the javascript engine used by qt, or if there is the possibility to built qt for a specific machine in order to get better results, or even more i'm dealing wrong with the settings of my application. I'm just supposing.

Any ideas or suggestings?
Thanks in advance.

kmbar2013

Was there ever a resolution to this?