Crash when trying to show QQuickWidget within a QOpenGLWidget when using OpenGLRhi
Unsolved
Mobile and Embedded
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Whenever I try to show a
QQuickWidgetwhile using aQOpenGLWidget,qtcrashes with the following message:ASSERT: "texD->texture && texD->specified" in file /Users/qt/work/qt/qtbase/src/gui/rhi/qrhigles2.cpp, line 5462Which seems to be a reference to this line: https://github.com/qt/qtbase/blob/ea1af6b7ed972910c6e125f9946f1f03f7b0de45/src/gui/rhi/qrhigles2.cpp#L5555 .
Here is a minimal code sample to reproduce the issue:
#include <QApplication> #include <QOpenGLWidget> #include <QOpenGLFunctions> #include <QQuickWidget> class MyOpenGLWidget : public QOpenGLWidget { public: MyOpenGLWidget(QWidget* p=nullptr) : QOpenGLWidget(p){ // if we move the contents of mousePressEvent here then there is no crash! } void mousePressEvent(QMouseEvent* mevent) { // this crashes! auto selector = new QQuickWidget(this); selector->show(); } void paintGL() override { glClearColor(1, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT); } }; int main(int argc, char *argv[]) { QApplication a(argc, argv); QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi); MyOpenGLWidget widget; widget.show(); return a.exec(); }Some notes:
- I am using Qt 6.5.0 on MacOS.
- As shown in the code, if I move
auto selector = new QQuickWidget(this);selector->show();to the constructor instead of click event, then there is no crash and the widget is shown properly. - The crash only occurs when using
QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi); - I have only observed the crash on
x86_64 iOS simulator. When running on my m1 macbook the crash doesn't happen and the app works perfectly. (I don't have an iOS device so I can't test it on ios arm64 architecture)
Any help would be greatly appreciated.
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Also here is the stacktrace if it helps:
0 ??? 0x10a1029a8 ??? 1 <translation info unavailable> 0x10c7d5e24 ??? 2 libsystem_pthread.dylib 0x115b91ee6 pthread_kill + 263 3 libsystem_c.dylib 0x114e06e58 abort + 130 4 test5 0x104c96839 qAbort() + 9 (qglobal.cpp:161) 5 test5 0x104c9b6b8 qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&) + 24 (qlogging.cpp:2048) 6 test5 0x10510d7b6 QMessageLogger::fatal(char const*, ...) const + 246 (qlogging.cpp:934) 7 test5 0x10510d08a qt_assert(char const*, char const*, int) + 74 (qassert.cpp:68) 8 test5 0x1041c7e45 QGles2TextureRenderTarget::create() + 981 (qrhigles2.cpp:5462) 9 test5 0x103580e82 QQuickWidget::createFramebufferObject() + 1890 (qquickwidget.cpp:1137) 10 test5 0x103585ad1 QQuickWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) + 225 (moc_qquickwidget.cpp:295) 11 test5 0x104da0579 void doActivate<false>(QObject*, int, void**) + 2313 (qobject.cpp:4004) 12 test5 0x104d9f039 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 121 (qobject.cpp:4052) 13 test5 0x103607465 QQuickWindow::sceneGraphInitialized() + 37 (moc_qquickwindow.cpp:829) 14 test5 0x10360665d QQuickWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) + 109 (moc_qquickwindow.cpp:570) 15 test5 0x104da0579 void doActivate<false>(QObject*, int, void**) + 2313 (qobject.cpp:4004) 16 test5 0x104d9f039 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 121 (qobject.cpp:4052) 17 test5 0x1036b52d2 QSGRenderContext::initialized() + 34 (moc_qsgcontext_p.cpp:289) 18 test5 0x1036c7b67 QSGDefaultRenderContext::initialize(QSGRenderContext::InitParams const*) + 295 (qsgdefaultrendercontext.cpp:57) 19 test5 0x1035f1a1a QQuickRenderControl::initialize() + 378 (qquickrendercontrol.cpp:309) 20 test5 0x1035806d3 QQuickWidgetPrivate::initializeWithRhi() + 867 (qquickwidget.cpp:1058) 21 test5 0x1035837aa QQuickWidget::resizeEvent(QResizeEvent*) + 474 (qquickwidget.cpp:1404) 22 test5 0x1038782cb QWidget::event(QEvent*) + 2683 (qwidget.cpp:9076) 23 test5 0x103584fb9 QQuickWidget::event(QEvent*) + 1321 (qquickwidget.cpp:1719) 24 test5 0x1037ea0ba QApplicationPrivate::notify_helper(QObject*, QEvent*) + 458 (qapplication.cpp:3284) 25 test5 0x1037ee456 QApplication::notify(QObject*, QEvent*) + 11974 (qapplication.cpp:3231) 26 test5 0x104d2212a QCoreApplication::notifyInternal2(QObject*, QEvent*) + 282 (qcoreapplication.cpp:1115) 27 test5 0x104d22df3 QCoreApplication::sendEvent(QObject*, QEvent*) + 131 (qcoreapplication.cpp:1533) 28 test5 0x10386f721 QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) + 353 (qwidget.cpp:7944) 29 test5 0x103875ff0 QWidgetPrivate::show_helper() + 64 (qwidget.cpp:7995) 30 test5 0x10387707f QWidgetPrivate::setVisible(bool) + 943 (qwidget.cpp:8344) 31 test5 0x103876cc0 QWidget::setVisible(bool) + 144 (qwidget.cpp:8276) 32 test5 0x10386871e QWidget::showMaximized() + 126 (qwidget.cpp:3057) 33 test5 0x103875e94 QWidget::show() + 100 (qwidget.cpp:7900) 34 test5 0x102e70702 MyOpenGLWidget::mousePressEvent(QMouseEvent*) + 82 (main.cpp:16) 35 test5 0x103877a73 QWidget::event(QEvent*) + 547 (qwidget.cpp:8902) 36 test5 0x1037ac198 QOpenGLWidget::event(QEvent*) + 712 (qopenglwidget.cpp:1698) 37 test5 0x1037ea0ba QApplicationPrivate::notify_helper(QObject*, QEvent*) + 458 (qapplication.cpp:3284) 38 test5 0x1037ec11c QApplication::notify(QObject*, QEvent*) + 2956 (qapplication.cpp:2772) 39 test5 0x104d2212a QCoreApplication::notifyInternal2(QObject*, QEvent*) + 282 (qcoreapplication.cpp:1115) 40 test5 0x104d22e83 QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) + 131 (qcoreapplication.cpp:1547) 41 test5 0x1037eabd0 QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) + 1216 (qapplication.cpp:2356) 42 test5 0x1038a44a5 QWidgetWindow::handleMouseEvent(QMouseEvent*) + 4485 (qwidgetwindow.cpp:623) 43 test5 0x1038a2849 QWidgetWindow::event(QEvent*) + 361 (qwidgetwindow.cpp:241) 44 test5 0x1037ea0ba QApplicationPrivate::notify_helper(QObject*, QEvent*) + 458 (qapplication.cpp:3284) 45 test5 0x1037ee474 QApplication::notify(QObject*, QEvent*) + 12004 (qapplication.cpp:3235) 46 test5 0x104d2212a QCoreApplication::notifyInternal2(QObject*, QEvent*) + 282 (qcoreapplication.cpp:1115) 47 test5 0x104d22e83 QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) + 131 (qcoreapplication.cpp:1547) 48 test5 0x103e0f2b0 QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) + 2384 (qguiapplication.cpp:2277) 49 test5 0x103e0ec51 QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) + 753 (qguiapplication.cpp:2187) 50 test5 0x103e110b4 QGuiApplicationPrivate::processTouchEvent(QWindowSystemInterfacePrivate::TouchEvent*) + 5412 (qguiapplication.cpp:3081) 51 test5 0x103e0e2de QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) + 110 (qguiapplication.cpp:2035) 52 test5 0x103e74a5e QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 190 (qwindowsysteminterface.cpp:1094) 53 test5 0x102e7af11 QIOSEventDispatcher::processPostedEvents() + 545 (qioseventdispatcher.mm:443) 54 test5 0x104f9bf3b RunLoopSource<QEventDispatcherCoreFoundation>::process(void*) + 107 (qeventdispatcher_cf_p.h:111) 55 CoreFoundation 0x113e56b8f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 56 CoreFoundation 0x113e56ad1 __CFRunLoopDoSource0 + 157 57 CoreFoundation 0x113e5632b __CFRunLoopDoSources0 + 311 58 CoreFoundation 0x113e509ba __CFRunLoopRun + 889 59 CoreFoundation 0x113e50264 CFRunLoopRunSpecific + 560 60 GraphicsServices 0x1225e324e GSEventRunModal + 139 61 UIKitCore 0x13abc47bf -[UIApplication _run] + 994 62 UIKitCore 0x13abc95de UIApplicationMain + 123 63 test5 0x102e79161 qt_main_wrapper + 705 (qioseventdispatcher.mm:206) 64 dyld_sim 0x112701384 start_sim + 10 65 dyld 0x20a3db41f start + 1903