[Interest] QQuickRenderControl example not working on Desktop OSX (Qt 5.4 Alpha)

[Gunnar Sletta]

On 16 Oct 2014, at 11:46, Roberto Garrido Martín <robertogarridomartin at gmail.com> wrote:

> 
> 
> On 16 October 2014 11:16, Gunnar Sletta <gunnar at sletta.org> wrote:
> 
> On 16 Oct 2014, at 09:45, Roberto Garrido Martín <robertogarridomartin at gmail.com> wrote:
> 
> > Hi all,
> > We have our OpenGL ES 2.0 based renderer. Until now, we were integrating it into our Qt app by using a QML Item/Node configuration, but the new rendercontrol API in Qt 5.4 Alpha seems to be a more flexible solution, and the proper way to integrate.
> 
> Be aware of that if you use the rendercontrol API you will be on a single thread and will miss out on the parallelization that the threaded render loop has, including the render thread animations.
> 
> The best point of integration for a native GL renderer will in most cases be to use QQuickWindow::beforeRendering() and render into the GL context of the window.
> 
> 
> 
> Thanks for the input.
> If we do it that way, we will still be able to render our GL scene on the background while the QML scene will be rendered on top of it?

Indeed you will :) See the OpenGL under QML example: http://qt-project.org/doc/qt-5/qtquick-scenegraph-openglunderqml-example.html 

> 
> Cheers,
> Robert.