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Diffstat (limited to 'src/quickwidgets/qquickwidget.cpp')
| -rw-r--r-- | src/quickwidgets/qquickwidget.cpp | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp index 37b3823bde..e3b7a8da28 100644 --- a/src/quickwidgets/qquickwidget.cpp +++ b/src/quickwidgets/qquickwidget.cpp @@ -558,19 +558,24 @@ QImage QQuickWidgetPrivate::grabFramebuffer() size of the view. Alternatively the resizeMode may be set to SizeRootObjectToView which will resize the view to the size of the root object. - \note QQuickWidget is an alternative to using QQuickView and QWidget::createWindowContainer(). + \section1 Performance Considerations + + QQuickWidget is an alternative to using QQuickView and QWidget::createWindowContainer(). The restrictions on stacking order do not apply, making QQuickWidget the more flexible alternative, behaving more like an ordinary widget. - \note However, the above mentioned advantages come at the expense of performance. - Unlike QQuickWindow and QQuickView, QQuickWidget requires rendering into OpenGL + However, the above mentioned advantages come at the expense of performance: + \list + + \li Unlike QQuickWindow and QQuickView, QQuickWidget requires rendering into OpenGL framebuffer objects, which needs to be enforced by calling - QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi) at startup. + QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL) at startup. This will naturally carry a minor performance hit. - \note Using QQuickWidget disables the threaded render loop on all platforms. This means that - some of the benefits of threaded rendering, for example \l Animator classes and vsync driven - animations, will not be available. + \li Using QQuickWidget disables the \l{threaded_render_loop}{threaded render loop} on all + platforms. This means that some of the benefits of threaded rendering, for example + \l Animator classes and vsync driven animations, will not be available. + \endlist \note Avoid calling winId() on a QQuickWidget. This function triggers the creation of a native window, resulting in reduced performance and possibly rendering glitches. The |