diff --git a/kwin/client.cpp b/kwin/client.cpp
index 98c2b8c..9055c20 100644
--- a/kwin/client.cpp
+++ b/kwin/client.cpp
@@ -582,24 +582,60 @@ void Client::resizeDecorationPixmaps()
     QRect lr, rr, tr, br;
     layoutDecorationRects(lr, tr, rr, br, DecorationRelative);

-    if (decorationPixmapTop.size() != tr.size()) {
-        Pixmap pixmap = XCreatePixmap(display(), rootWindow(), tr.width(), tr.height(), 32);
-        decorationPixmapTop = QPixmap::fromX11Pixmap(pixmap, QPixmap::ExplicitlyShared);
+    if (decorationPixmapTop.size() != tr.size())
+    {
+        if (workspace()->isCompositingActive() && effects->compositingType() == OpenGLCompositing) {
+            decorationPixmapTop = QPixmap(tr.size());
+        }
+        else {
+            Pixmap xpix = XCreatePixmap(QX11Info::display(), rootWindow(),
+                                        tr.size().width(), tr.height(),
+                                        32);
+            decorationPixmapTop = QPixmap::fromX11Pixmap(xpix, QPixmap::ExplicitlyShared);
+            decorationPixmapTop.fill(Qt::transparent);
+        }
     }

-    if (decorationPixmapBottom.size() != br.size()) {
-        Pixmap pixmap = XCreatePixmap(display(), rootWindow(), br.width(), br.height(), 32);
-        decorationPixmapBottom = QPixmap::fromX11Pixmap(pixmap, QPixmap::ExplicitlyShared);
+    if (decorationPixmapBottom.size() != br.size())
+    {
+        if (workspace()->isCompositingActive() && effects->compositingType() == OpenGLCompositing) {
+            decorationPixmapBottom = QPixmap(br.size());
+        }
+        else {
+            Pixmap xpix = XCreatePixmap(QX11Info::display(), rootWindow(),
+                                        br.size().width(), br.height(),
+                                        32);
+            decorationPixmapBottom = QPixmap::fromX11Pixmap(xpix, QPixmap::ExplicitlyShared);
+            decorationPixmapBottom.fill(Qt::transparent);
+        }
     }

-    if (decorationPixmapLeft.size() != lr.size()) {
-        Pixmap pixmap = XCreatePixmap(display(), rootWindow(), lr.width(), lr.height(), 32);
-        decorationPixmapLeft = QPixmap::fromX11Pixmap(pixmap, QPixmap::ExplicitlyShared);
+    if (decorationPixmapLeft.size() != lr.size())
+    {
+        if (workspace()->isCompositingActive() && effects->compositingType() == OpenGLCompositing) {
+            decorationPixmapLeft = QPixmap(lr.size());
+        }
+        else {
+            Pixmap xpix = XCreatePixmap(QX11Info::display(), rootWindow(),
+                                        lr.size().width(), lr.height(),
+                                        32);
+            decorationPixmapLeft = QPixmap::fromX11Pixmap(xpix, QPixmap::ExplicitlyShared);
+            decorationPixmapLeft.fill(Qt::transparent);
+        }
     }

-    if (decorationPixmapRight.size() != rr.size()) {
-        Pixmap pixmap = XCreatePixmap(display(), rootWindow(), rr.width(), rr.height(), 32);
-        decorationPixmapRight = QPixmap::fromX11Pixmap(pixmap, QPixmap::ExplicitlyShared);
+    if (decorationPixmapRight.size() != rr.size())
+    {
+        if (workspace()->isCompositingActive() && effects->compositingType() == OpenGLCompositing) {
+            decorationPixmapRight = QPixmap(rr.size());
+        }
+        else {
+            Pixmap xpix = XCreatePixmap(QX11Info::display(), rootWindow(),
+                                        rr.size().width(), rr.height(),
+                                        32);
+            decorationPixmapRight = QPixmap::fromX11Pixmap(xpix, QPixmap::ExplicitlyShared);
+            decorationPixmapRight.fill(Qt::transparent);
+        }
     }

 #ifdef HAVE_XRENDER
diff --git a/kwin/composite.cpp b/kwin/composite.cpp
index 8d7fd84..a1fb4d4 100644
--- a/kwin/composite.cpp
+++ b/kwin/composite.cpp
@@ -202,6 +202,7 @@ void Workspace::finishCompositing()
 #ifdef KWIN_HAVE_COMPOSITING
     if (scene == NULL)
         return;
+    finishingCompositing = true;
     delete cm_selection;
     foreach (Client * c, clients)
     scene->windowClosed(c, NULL);
@@ -240,6 +241,7 @@ void Workspace::finishCompositing()
     // discard all Deleted windows (#152914)
     while (!deleted.isEmpty())
         deleted.first()->discard(Allowed);
+    finishingCompositing = false;
 #endif
 }

@@ -951,13 +953,14 @@ void Client::setupCompositing()
 {
     Toplevel::setupCompositing();
     updateVisibility(); // for internalKeep()
+    updateDecoration(true, true);
 }

 void Client::finishCompositing()
 {
     Toplevel::finishCompositing();
     updateVisibility();
-    triggerDecorationRepaint();
+    updateDecoration(true, true);
 }

 bool Client::shouldUnredirect() const
diff --git a/kwin/workspace.cpp b/kwin/workspace.cpp
index 81c8742..79f4054 100644
--- a/kwin/workspace.cpp
+++ b/kwin/workspace.cpp
@@ -160,6 +160,7 @@ Workspace::Workspace(bool restore)
     , transSlider(NULL)
     , transButton(NULL)
     , forceUnredirectCheck(true)
+    , finishingCompositing (false)
 {
     (void) new KWinAdaptor(this);

diff --git a/kwin/workspace.h b/kwin/workspace.h
index 8e639ff..802aeb5 100644
--- a/kwin/workspace.h
+++ b/kwin/workspace.h
@@ -412,6 +412,11 @@ public:
     void unloadEffect(const QString& name);
     void updateCompositeBlocking(Client* c = NULL);

+    bool isCompositingActive () const
+    {
+        return !finishingCompositing && compositing();
+    }
+
     QStringList loadedEffects() const;
     QStringList listOfEffects() const;

@@ -1038,6 +1043,7 @@ private:
     bool forceUnredirectCheck;
     QList< int > composite_paint_times;
     QTimer compositeResetTimer; // for compressing composite resets
+    bool finishingCompositing;

     Window outline_left;
     Window outline_right;