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5.13.2: better patch by https://codereview.qt-project.org/c/qt/qtbase/+/283280

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kleuter 2019-11-30 10:27:58 +01:00
parent 6cf3527708
commit d7048c2056
2 changed files with 12 additions and 3 deletions
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6
5.13.2/qtbase/src/plugins/platforms/cocoa/qcocoascreen.h
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@ -112,13 +112,13 @@ private:
QRect m_geometry;
QRect m_availableGeometry;
QDpi m_logicalDpi;
qreal m_refreshRate = 0;
int m_depth = 0;
qreal m_refreshRate;
int m_depth;
QString m_name;
QImage::Format m_format;
QSizeF m_physicalSize;
QCocoaCursor *m_cursor;
qreal m_devicePixelRatio = 0;
qreal m_devicePixelRatio;
CVDisplayLinkRef m_displayLink = nullptr;
dispatch_source_t m_displayLinkSource = nullptr;

9
5.13.2/qtbase/src/plugins/platforms/cocoa/qcocoascreen.mm
View File

@ -471,6 +471,15 @@ void QCocoaScreen::deliverUpdateRequests()
// it on the main thread yet, because the processing of the update request is taking
// too long, or because the update request was deferred due to window live resizing.
qDeferredDebug(screenUpdates) << ", " << framesAheadOfDelivery << " frame(s) ahead";
// We skip the frame completely if we're live-resizing, to not put any extra
// strain on the main thread runloop. Otherwise we assume we should push frames
// as fast as possible, and hopefully the callback will be delivered on the
// main thread just when the previous finished.
if (qt_apple_sharedApplication().keyWindow.inLiveResize) {
qDeferredDebug(screenUpdates) << "; waiting for main thread to catch up";
return;
}
}
qDeferredDebug(screenUpdates) << "; signaling dispatch source";