diff options
Diffstat (limited to 'src/plugins/platforms/cocoa/qcocoabackingstore.mm')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoabackingstore.mm | 85 |
1 files changed, 72 insertions, 13 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm index 15e0236107..b17302a640 100644 --- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm +++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm @@ -51,6 +51,17 @@ QT_BEGIN_NAMESPACE QCocoaBackingStore::QCocoaBackingStore(QWindow *window) : QRasterBackingStore(window) { + // Ideally this would be plumbed from the platform layer to QtGui, and + // the QBackingStore would be recreated, but we don't have that code yet, + // so at least make sure we invalidate our backingstore when the backing + // properties (color space e.g.) are changed. + NSView *view = static_cast<QCocoaWindow *>(window->handle())->view(); + m_backingPropertiesObserver = QMacNotificationObserver(view.window, + NSWindowDidChangeBackingPropertiesNotification, [this]() { + qCDebug(lcQpaBackingStore) << "Backing properties for" + << this->window() << "did change"; + backingPropertiesChanged(); + }); } QCFType<CGColorSpaceRef> QCocoaBackingStore::colorSpace() const @@ -64,6 +75,37 @@ QCFType<CGColorSpaceRef> QCocoaBackingStore::colorSpace() const QNSWindowBackingStore::QNSWindowBackingStore(QWindow *window) : QCocoaBackingStore(window) { + // Choose an appropriate window depth based on the requested surface format. + // On deep color displays the default bit depth is 16-bit, so unless we need + // that level of precision we opt out of it (and the expensive RGB32 -> RGB64 + // conversions that come with it if our backingstore depth does not match). + + NSWindow *nsWindow = static_cast<QCocoaWindow *>(window->handle())->view().window; + auto colorSpaceName = NSColorSpaceFromDepth(nsWindow.depthLimit); + + static const int kDefaultBitDepth = 8; + auto surfaceFormat = window->requestedFormat(); + auto bitsPerSample = qMax(kDefaultBitDepth, qMax(surfaceFormat.redBufferSize(), + qMax(surfaceFormat.greenBufferSize(), surfaceFormat.blueBufferSize()))); + + // NSBestDepth does not seem to guarantee a window depth deep enough for the + // given bits per sample, even if documented as such. For example, requesting + // 10 bits per sample will not give us a 16-bit format, even if that's what's + // available. Work around this by manually bumping the bit depth. + bitsPerSample = !(bitsPerSample & (bitsPerSample - 1)) + ? bitsPerSample : qNextPowerOfTwo(bitsPerSample); + + auto bestDepth = NSBestDepth(colorSpaceName, bitsPerSample, 0, NO, nullptr); + + // Disable dynamic depth limit, otherwise our depth limit will be overwritten + // by AppKit if the window moves to a screen with a different depth. We call + // this before setting the depth limit, as the call will reset the depth to 0. + [nsWindow setDynamicDepthLimit:NO]; + + qCDebug(lcQpaBackingStore) << "Using" << NSBitsPerSampleFromDepth(bestDepth) + << "bit window depth for" << nsWindow; + + nsWindow.depthLimit = bestDepth; } QNSWindowBackingStore::~QNSWindowBackingStore() @@ -212,9 +254,6 @@ void QNSWindowBackingStore::flush(QWindow *window, const QRegion ®ion, const CGRect viewRect = viewLocalRect.toCGRect(); - if (windowHasUnifiedToolbar()) - NSDrawWindowBackground(viewRect); - [backingStoreImage drawInRect:viewRect fromRect:backingStoreRect.toCGRect() operation:compositingOperation fraction:1.0 respectFlipped:YES hints:nil]; @@ -302,6 +341,11 @@ void QNSWindowBackingStore::redrawRoundedBottomCorners(CGRect windowRect) const #endif } +void QNSWindowBackingStore::backingPropertiesChanged() +{ + m_image = QImage(); +} + // ---------------------------------------------------------------------------- QCALayerBackingStore::QCALayerBackingStore(QWindow *window) @@ -516,17 +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 @@ -565,6 +618,12 @@ QImage QCALayerBackingStore::toImage() const return imageCopy; } +void QCALayerBackingStore::backingPropertiesChanged() +{ + m_buffers.clear(); + m_buffers.resize(1); +} + QPlatformGraphicsBuffer *QCALayerBackingStore::graphicsBuffer() const { return m_buffers.back().get(); |