I also open a bug report for the memory management : https://bugreports.qt.io/browse/QTBUG-54194
2016-06-17 14:52 GMT+02:00 Xavier Bigand <flamaros.xav...@gmail.com>: > https://bugreports.qt.io/browse/QTBUG-54184 > > For the leaks I need to check, but firstly it seems that textures stay in > RAM even when already in VRAM. > > 2016-06-17 12:33 GMT+02:00 Sean Harmer <sean.har...@kdab.com>: > >> Hi, >> >> On Friday 17 June 2016 12:11:56 Xavier Bigand wrote: >> > I finally found a work around to fix my crash when loading models >> > after few unload. >> > >> > I simply release myself all children of the delete entity with the >> > following recursive method : >> > >> > >> > void releaseModel(Qt3DCore::QNode& model) >> > >> > { >> > >> > QEntity* entity = dynamic_cast<QEntity*>(&model); >> > >> > >> > if (entity) >> > >> > { >> > >> > QComponentVector components = entity->components(); >> > >> > >> > foreach (QComponent* component, components) >> > >> > { >> > >> > entity->removeComponent(component); >> > >> > delete component; >> > >> > } >> > >> > } >> > >> > >> > QNodeVector nodes = model.childNodes(); >> > >> > >> > foreach (QNode* node, nodes) >> > >> > { >> > >> > releaseModel(*node); >> > >> > delete node; >> > >> > } >> > >> > } >> > >> > >> > >> > I don't know why I haven't the same behavior when letting Qt doing it. >> > >> > >> > >> > Need I fill a bug? >> >> Yes, please file a JIRA. Ideally with a test case. Also for any leaks you >> suspect. >> >> Thanks, >> >> Sean >> >> > >> > >> > >> > It seems that Qt3D have a lot of memory leaks, after changing a few >> > projects our application use more than 1Go when with our actual 3D >> engine >> > it's always lower than 200Mo. >> > >> > 2016-06-16 23:03 GMT+02:00 Xavier Bigand <flamaros.xav...@gmail.com>: >> > > Thank for the report. >> > > >> > > I was not sure if it wasn't me doing something wrong. >> > > >> > > But it might be the case, because the assert seems to come from a bad >> > > ressources management. >> > > When I switch projects I simply delete entities that attached to the >> root >> > > one, but doing this leads to the assert at a certain time and memory >> leaks >> > > apparently. >> > > >> > > My scenes are composed of objects that I load from a custom file >> format, >> > > it's for an architecture software. >> > > >> > > I can load 2 projects in a row, and on the third I get the assert. >> > > >> > > It seems that I can debug when using Visual instead of QtCreator. And >> it >> > > surprise me because the release of ressources seems to be done later >> than >> > > when I call the delete of entities. >> > > >> > > 2016-06-16 21:14 GMT+02:00 Harald Vistnes <harald.vist...@gmail.com>: >> > >> I get the same QMetaProperty::read warning. I just filed a Jira for >> it. >> > >> https://bugreports.qt.io/browse/QTBUG-54159?filter=17174 >> > >> >> > >> Annoying and it came recently, but not critical as you can continue >> > >> running the debugger. >> > >> >> > >> Harald >> > >> >> > >> 2016-06-16 17:53 GMT+02:00 Xavier Bigand <flamaros.xav...@gmail.com >> >: >> > >>> Sometimes when it doesn't crash on the first scene switch I can get >> this >> > >>> assert : >> > >>> ASSERT: "m_entries[index].m_counter == handle.counter()" in file >> > >>> c:/Users/qt/work/qt/qt3d/src/core/resources/qhandlemanager_p.h, >> line 170 >> > >>> >> > >>> Sadly it seems that I am not able to debug it with source code. >> > >>> >> > >>> 2016-06-16 17:35 GMT+02:00 Xavier Bigand <flamaros.xav...@gmail.com >> >: >> > >>>> I am getting the following message when I unload a scene. I am >> simply >> > >>>> deleting the entities I don't have to display anymore. >> > >>>> >> > >>>> QMetaProperty::read: Unable to handle unregistered datatype >> > >>>> 'Qt3DRender::QBuffer*' for property >> 'Qt3DRender::QAttribute::buffer' >> > >>>> >> > >>>> What is the proper way to unload meshes in c++? Need I also delete >> all >> > >>>> attached components (QGeometryRenderer, QBuffer, ...)? >> > >>>> >> > >>>> -- >> > >>>> Xavier >> > >>> >> > >>> -- >> > >>> Xavier >> > >>> >> > >>> _______________________________________________ >> > >>> Interest mailing list >> > >>> Interest@qt-project.org >> > >>> http://lists.qt-project.org/mailman/listinfo/interest >> > > >> > > -- >> > > Xavier >> >> -- >> Dr Sean Harmer | sean.har...@kdab.com | Managing Director UK >> Klarälvdalens Datakonsult AB, a KDAB Group company >> Tel. UK +44 (0)1625 809908, Sweden (HQ) +46-563-540090 >> KDAB - Qt Experts - Platform-independent software solutions >> > > > > -- > Xavier > -- Xavier
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