Re: [Interest] OpenGL cpu benchmark QtQuick vs OSX Native

2015-09-07 Thread Bruno Di Giorgi
Hi Gunnar, Thank you for the reply, > Is the Native OSX application also rendering via a framebuffer? As far as I understand there might in fact be a difference of one FBO between the Native OS X and the QtQuick version. Though this may depend on the implementation of the NSOpenGLView: - if N

Re: [Interest] OpenGL cpu benchmark QtQuick vs OSX Native

2015-09-06 Thread Gunnar Sletta
Hi Bruno, Is the Native OSX application also rendering via a framebuffer? On an Intel GPU rendering via an FBO will add considerable cost. Is the same symptom present when you render directly to the QQuickWindow using for instance the beforeRendering() signal? (http://doc.qt.io/qt-5/qtquick-sc

[Interest] OpenGL cpu benchmark QtQuick vs OSX Native

2015-09-04 Thread Bruno Di Giorgi
Dear mailing list, First time I write here, I posted this yesterday on the QtQuick forum and a user recommended me to post on this mailing list. I noticed some heavy cpu usage in a QtQuick (using Qt5.5) osx app compared to an equivalent Native OSX app. Around 5% more cpu usage with a simple app