Make sure exposeEvents trigger a render pass

We needs this on non-compositing window managers to trigger
repaints on partial updates.

Change-Id: Ied5f3e854173c5e00ad7e1222aeb66eb9c96158c
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

2 files changed, 5 insertions, 1 deletions

diff --git a/src/quick/scenegraph/qsgrenderloop.cpp b/src/quick/scenegraph/qsgrenderloop.cpp
index 83e8d3f17a..85ef549397 100644
--- a/src/quick/scenegraph/qsgrenderloop.cpp
+++ b/src/quick/scenegraph/qsgrenderloop.cpp
@@ -305,8 +305,10 @@ void QSGGuiThreadRenderLoop::renderWindow(QQuickWindow *window)
 
 void QSGGuiThreadRenderLoop::exposureChanged(QQuickWindow *window)
 {
-    if (window->isExposed())
+    if (window->isExposed()) {
+        m_windows[window].updatePending = true;
         renderWindow(window);
+    }
 }
 
 QImage QSGGuiThreadRenderLoop::grab(QQuickWindow *window)
diff --git a/src/quick/scenegraph/qsgthreadedrenderloop.cpp b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
index eebcad72d7..fb26f543c3 100644
--- a/src/quick/scenegraph/qsgthreadedrenderloop.cpp
+++ b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
@@ -372,6 +372,8 @@ bool QSGRenderThread::event(QEvent *e)
         RLDEBUG1("    Render: WM_Expose");
         WMExposeEvent *se = static_cast<WMExposeEvent *>(e);
 
+        pendingUpdate |= RepaintRequest;
+
         if (windowFor(m_windows, se->window)) {
             RLDEBUG1("    Render:  - window already added...");
             return true;