diff options
4 files changed, 22 insertions, 10 deletions
diff --git a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer.cpp b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer.cpp index 02cf8209d1..30088846a6 100644 --- a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer.cpp +++ b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer.cpp @@ -193,6 +193,12 @@ QRegion QSGAbstractSoftwareRenderer::optimizeRenderList() } } + if (m_obscuredRegion.contains(m_background->rect().toAlignedRect())) { + m_isOpaque = true; + } else { + m_isOpaque = false; + } + // Empty dirtyRegion (for second pass) m_dirtyRegion = QRegion(); m_obscuredRegion = QRegion(); diff --git a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h index 04a17ea377..c68a933384 100644 --- a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h +++ b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h @@ -86,6 +86,8 @@ protected: void setBackgroundSize(const QSize &size); QColor backgroundColor(); QSize backgroundSize(); + // only known after calling optimizeRenderList() + bool isOpaque() const { return m_isOpaque; } private: void nodeAdded(QSGNode *node); @@ -102,6 +104,7 @@ private: QRegion m_dirtyRegion; QRegion m_obscuredRegion; + bool m_isOpaque; QSGSoftwareRenderableNodeUpdater *m_nodeUpdater; }; diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp index bd5d8f72c0..9d30c43f87 100644 --- a/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp +++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp @@ -229,9 +229,6 @@ void QSGSoftwareLayer::grab() if (m_pixmap.size() != m_size) { m_pixmap = QPixmap(m_size); m_pixmap.setDevicePixelRatio(m_device_pixel_ratio); - // This fill here is wasteful, but necessary because it is the only way - // to force a QImage based pixmap to have an alpha channel. - m_pixmap.fill(Qt::transparent); } // Render texture. diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarepixmaprenderer.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarepixmaprenderer.cpp index f8c1a3d90b..7824e53622 100644 --- a/src/quick/scenegraph/adaptations/software/qsgsoftwarepixmaprenderer.cpp +++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarepixmaprenderer.cpp @@ -82,13 +82,6 @@ void QSGSoftwarePixmapRenderer::render(QPaintDevice *target) setBackgroundSize(QSize(target->width(), target->height())); setBackgroundColor(clearColor()); - QPainter painter(target); - painter.setRenderHint(QPainter::Antialiasing); - painter.setWindow(m_projectionRect); - auto rc = static_cast<QSGSoftwareRenderContext *>(context()); - QPainter *prevPainter = rc->m_activePainter; - rc->m_activePainter = &painter; - renderTimer.start(); buildRenderList(); qint64 buildRenderListTime = renderTimer.restart(); @@ -101,6 +94,19 @@ void QSGSoftwarePixmapRenderer::render(QPaintDevice *target) optimizeRenderList(); qint64 optimizeRenderListTime = renderTimer.restart(); + if (!isOpaque() && target->devType() == QInternal::Pixmap) { + // This fill here is wasteful, but necessary because it is the only way + // to force a QImage based pixmap to have an alpha channel. + static_cast<QPixmap *>(target)->fill(Qt::transparent); + } + + QPainter painter(target); + painter.setRenderHint(QPainter::Antialiasing); + painter.setWindow(m_projectionRect); + auto rc = static_cast<QSGSoftwareRenderContext *>(context()); + QPainter *prevPainter = rc->m_activePainter; + rc->m_activePainter = &painter; + QRegion paintedRegion = renderNodes(&painter); qint64 renderTime = renderTimer.elapsed(); |