diff options
Diffstat (limited to 'src/plugins/platforms/cocoa')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoascreen.mm | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoascreen.mm b/src/plugins/platforms/cocoa/qcocoascreen.mm index 10b739d6d8..078d8a1c72 100644 --- a/src/plugins/platforms/cocoa/qcocoascreen.mm +++ b/src/plugins/platforms/cocoa/qcocoascreen.mm @@ -454,6 +454,25 @@ void QCocoaScreen::deliverUpdateRequests() if (!platformWindow->updatesWithDisplayLink()) continue; + // QTBUG-107198: Skip updates in a live resize for a better resize experience. + if (platformWindow->isContentView() && platformWindow->view().inLiveResize) { + const QSurface::SurfaceType surfaceType = window->surfaceType(); + const bool usesMetalLayer = surfaceType == QWindow::MetalSurface || surfaceType == QWindow::VulkanSurface; + const bool usesNonDefaultContentsPlacement = [platformWindow->view() layerContentsPlacement] + != NSViewLayerContentsPlacementScaleAxesIndependently; + if (usesMetalLayer && usesNonDefaultContentsPlacement) { + static bool deliverDisplayLinkUpdatesDuringLiveResize = + qEnvironmentVariableIsSet("QT_MAC_DISPLAY_LINK_UPDATE_IN_RESIZE"); + if (!deliverDisplayLinkUpdatesDuringLiveResize) { + // Must keep the link running, we do not know what the event + // handlers for UpdateRequest (which is not sent now) would do, + // would they trigger a new requestUpdate() or not. + pauseUpdates = false; + continue; + } + } + } + platformWindow->deliverUpdateRequest(); // Another update request was triggered, keep the display link running |