diff options
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbwindow.cpp | 6 | ||||
| -rw-r--r-- | src/widgets/kernel/qwidget_qpa.cpp | 7 |
2 files changed, 9 insertions, 4 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp index e2c6932992..f46bed77d6 100644 --- a/src/plugins/platforms/xcb/qxcbwindow.cpp +++ b/src/plugins/platforms/xcb/qxcbwindow.cpp @@ -280,8 +280,12 @@ void QXcbWindow::create() if (parent()) { xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window(); m_embedded = parent()->window()->type() == Qt::ForeignWindow; - } + QSurfaceFormat parentFormat = parent()->window()->requestedFormat(); + if (window()->surfaceType() != QSurface::OpenGLSurface && parentFormat.hasAlpha()) { + window()->setFormat(parentFormat); + } + } m_format = window()->requestedFormat(); #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB) diff --git a/src/widgets/kernel/qwidget_qpa.cpp b/src/widgets/kernel/qwidget_qpa.cpp index 3281e0c6f7..0fd794cc02 100644 --- a/src/widgets/kernel/qwidget_qpa.cpp +++ b/src/widgets/kernel/qwidget_qpa.cpp @@ -118,11 +118,12 @@ void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyO win->resize(q->size()); win->setScreen(QGuiApplication::screens().value(topData()->screenIndex, 0)); - if (q->testAttribute(Qt::WA_TranslucentBackground)) { - QSurfaceFormat format; + QSurfaceFormat format = win->requestedFormat(); + if ((flags & Qt::Window) && win->surfaceType() != QSurface::OpenGLSurface + && q->testAttribute(Qt::WA_TranslucentBackground)) { format.setAlphaBufferSize(8); - win->setFormat(format); } + win->setFormat(format); if (QWidget *nativeParent = q->nativeParentWidget()) { if (nativeParent->windowHandle()) { |