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Harold last edited by
I am working on a project that needs to have an HTML5 transparent UI over a 3D rendering using Ogre3D engine.
My solution was to use a QT 5.4's QGraphicsView with a QGLWidget as viewport to get an OpenGL context and to be able to render 3D things in QGraphicsScene drawBackground() method.
I have added a transparent QGraphicsWebView in the QGraphicsScene and everything is working fine with a simple HTML5 UI.
I have then tried the same UI in a QGraphicsWebView that has not rendering acceleration, without QGLWidget as viewport, i have not anymore a such huge CPU usage peak.