diff options
Diffstat (limited to 'src/plugins/platforms')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoabackingstore.mm | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm index c734be09b6..97bb4e8bed 100644 --- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm +++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm @@ -536,8 +536,10 @@ void QCALayerBackingStore::flush(QWindow *flushedWindow, const QRegion ®ion, flushedView.layer.contentsScale = m_buffers.back()->devicePixelRatio(); } + const bool isSingleBuffered = window()->format().swapBehavior() == QSurfaceFormat::SingleBuffer; + id backBufferSurface = (__bridge id)m_buffers.back()->surface(); - if (flushedView.layer.contents == backBufferSurface) { + if (!isSingleBuffered && flushedView.layer.contents == backBufferSurface) { // We've managed to paint to the back buffer again before Core Animation had time // to flush the transaction and persist the layer changes to the window server, or // we've been asked to flush without painting anything. The layer already knows about @@ -554,7 +556,7 @@ void QCALayerBackingStore::flush(QWindow *flushedWindow, const QRegion ®ion, // with other pending view and layer updates. flushedView.window.viewsNeedDisplay = YES; - if (window()->format().swapBehavior() == QSurfaceFormat::SingleBuffer) { + if (isSingleBuffered) { // The private API [CALayer reloadValueForKeyPath:@"contents"] would be preferable, // but barring any side effects or performance issues we opt for the hammer for now. flushedView.layer.contents = nil; |