diff options
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoabackingstore.mm | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm index eb316c53a8..b17302a640 100644 --- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm +++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm @@ -560,17 +560,26 @@ void QCALayerBackingStore::flush(QWindow *flushedWindow, const QRegion ®ion, flushedView.layer.contents = nil; } - qCInfo(lcQpaBackingStore) << "Flushing" << backBufferSurface - << "to" << flushedView.layer << "of" << flushedView; - - flushedView.layer.contents = backBufferSurface; + if (flushedView == backingStoreView) { + qCInfo(lcQpaBackingStore) << "Flushing" << backBufferSurface + << "to" << flushedView.layer << "of" << flushedView; + flushedView.layer.contents = backBufferSurface; + } else { + auto subviewRect = [flushedView convertRect:flushedView.bounds toView:backingStoreView]; + auto scale = flushedView.layer.contentsScale; + subviewRect = CGRectApplyAffineTransform(subviewRect, CGAffineTransformMakeScale(scale, scale)); + + // We make a copy of the image data up front, which means we don't + // need to mark the IOSurface as being in use. FIXME: Investigate + // if there's a cheaper way to get sub-image data to a layer. + m_buffers.back()->lock(QPlatformGraphicsBuffer::SWReadAccess); + QImage subImage = m_buffers.back()->asImage()->copy(QRectF::fromCGRect(subviewRect).toRect()); + m_buffers.back()->unlock(); - if (flushedView != backingStoreView) { - const CGSize backingStoreSize = backingStoreView.bounds.size; - flushedView.layer.contentsRect = CGRectApplyAffineTransform( - [flushedView convertRect:flushedView.bounds toView:backingStoreView], - // The contentsRect is in unit coordinate system - CGAffineTransformMakeScale(1.0 / backingStoreSize.width, 1.0 / backingStoreSize.height)); + qCInfo(lcQpaBackingStore) << "Flushing" << subImage + << "to" << flushedView.layer << "of subview" << flushedView; + QCFType<CGImageRef> cgImage = subImage.toCGImage(); + flushedView.layer.contents = (__bridge id)static_cast<CGImageRef>(cgImage); } // Since we may receive multiple flushes before a new frame is started, we do not |