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QScreen::refreshRate would return 0 on Mac OS X

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The function we use to get the actual vsync on cocoa is documented
to return 0 if the monitor is not a CRT monitor. A refreshrate
of 0 means we have vsync deltas of 1000/0 which cause problems
elsewhere. It is better to use the "default" value in this case
as it will be closer to correct than 0.

Change-Id: Id08007e40a9af5e42f13a07628fcad5fd3a7d0dc
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
This commit is contained in:
Gunnar Sletta 2013-02-14 11:33:47 +01:00 committed by The Qt Project
parent 7c33ae6a7b
commit ffecaf85e8
1 changed files with 3 additions and 1 deletions
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4
src/plugins/platforms/cocoa/qcocoaintegration.mm
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@ -105,7 +105,9 @@ void QCocoaScreen::updateGeometry()
m_physicalSize = QSizeF(size.width, size.height);
m_logicalDpi.first = 72;
m_logicalDpi.second = 72;
m_refreshRate = CGDisplayModeGetRefreshRate(CGDisplayCopyDisplayMode(dpy));
float refresh = CGDisplayModeGetRefreshRate(CGDisplayCopyDisplayMode(dpy));
if (refresh > 0)
m_refreshRate = refresh;
// Get m_name (brand/model of the monitor)
NSDictionary *deviceInfo = (NSDictionary *)IODisplayCreateInfoDictionary(CGDisplayIOServicePort(dpy), kIODisplayOnlyPreferredName);