opengl rendering

[matysek]

With Qt4 it is possible to use opengl rendering.

It could be used as an alternative rendering method for lyrics, presentations and other stuff. Opengl could improve performance of rendering for some configurations.

For rendering it is now used class QtWebKit.QWebView.
Since qt 4.6 there is class QtWebKit.QGraphicsWebView.
For this class it should be possible to enable opengl rendering.

Some links:
QT Webkit performance tuning: http://web.archiveorange.com/archive/v/vXzdE4eBFnLmarVnsvOf
http://doc.qt.nokia.com/4.6/qgraphicswebview.html

[Raoul Snyman (raoul-snyman)]

I've tried this, and sadly it doesn't seem to work. Either that or my OpenGL is not working properly.

[Meinert Jordan (m2j)]

Hi o123hallo,

just a remark: don't spend too much work in QGraphicsWebView. All signs are pointing to WebKit2. According to the requirements of OpenLP I think, that this is the direction to go. Unfortunately the Qt API for WebKit2 is not yet released, so that it can't be used.
For further information have a look at:
http://blog.forwardbias.in/2011/08/on-webkit-and-webkit2.html
http://labs.qt.nokia.com/2011/07/07/qwebview-and-friends-are-looking-for-a-new-maintainer/

[Andreas Preikschat (googol-deactivatedaccount)]

crichter: Am I right and this is fixed?

[rimach (crichter)]

I activated the opengl rendering, but Im not sure it works for all platform neither it has any performance advantages?

[Andreas Preikschat (googol-deactivatedaccount)]

I didn't fine and huge difference in performance. But maybe that's just my computer....

Cheers, I consider this as done then.