bc410cc706
This patch reduces paint events by removing code which sets native widgets dirty in QWidgetWindow::handleExposeEvent. Native widgets are also marked dirty in QWidgetPrivate::drawWidget, so it is enough for proper painting. This restores Qt4 behavior when one resize means one repaint for native widgets. Without this patch the native widget is marked as dirty on every expose event, so one repaint is from syncBackingStore and second (or more) is from marking the widget dirty explicitly. This patch improves performance of native widgets and it also reduces locks when paint event is v-synced, e.g. on OpenGL swap buffers or on any other technology like VDPAU, VA-API, etc. Added autotest for checking number of paint events for native widgets. Task-number: QTBUG-50796 Change-Id: I4e1649069e2e73d15b038fd1834d0551915252ee Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io> |
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| .. | ||
| auto | ||
| baselineserver | ||
| benchmarks | ||
| global | ||
| manual | ||
| shared | ||
| README | ||
| tests.pro | ||
This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.
Linux X11:
* The user must be logged in to an active desktop; you can't run the
autotests without a valid DISPLAY that allows X11 connections.
* The tests are run against a KDE3 or KDE4 desktop.
* Window manager uses "click to focus", and not "focus follows mouse". Many
tests move the mouse cursor around and expect this to not affect focus
and activation.
* Disable "click to activate", i.e., when a window is opened, the window
manager should automatically activate it (give it input focus) and not
wait for the user to click the window.