5 files changed, 17 insertions, 5 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 3e5c4fc..cfcbbf8 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -99,6 +99,10 @@ QT_BEGIN_NAMESPACE
 QGLExtensionFuncs QGLContextPrivate::qt_extensionFuncs;
 #endif
 
+#ifdef Q_WS_X11
+extern const QX11Info *qt_x11Info(const QPaintDevice *pd);
+#endif
+
 struct QGLThreadContext {
     QGLContext *context;
 };
@@ -2448,7 +2452,10 @@ QGLTexture *QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target,
 
 #if defined(Q_WS_X11)
     // Try to use texture_from_pixmap
-    if (pd->classId() == QPixmapData::X11Class && pd->pixelType() == QPixmapData::PixmapType) {
+    const QX11Info *xinfo = qt_x11Info(paintDevice);
+    if (pd->classId() == QPixmapData::X11Class && pd->pixelType() == QPixmapData::PixmapType
+        && xinfo && xinfo->screen() == pixmap.x11Info().screen())
+    {
         texture = bindTextureFromNativePixmap(pd, key, options);
         if (texture) {
             texture->options |= QGLContext::MemoryManagedBindOption;
diff --git a/src/opengl/qgl_mac.mm b/src/opengl/qgl_mac.mm
index c01575b..4d7532e 100644
--- a/src/opengl/qgl_mac.mm
+++ b/src/opengl/qgl_mac.mm
@@ -951,8 +951,6 @@ void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget *shareWidget)
             break;
         current = current->parentWidget();
     }
-
-    isGLWidget = 1;
 }
 
 bool QGLWidgetPrivate::renderCxPm(QPixmap*)
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 18fc9c2..efd2090 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -173,7 +173,9 @@ public:
 #if defined(Q_WS_X11) && defined(QT_OPENGL_ES)
                        , eglSurfaceWindowId(0)
 #endif
-        {}
+    {
+        isGLWidget = 1;
+    }
 
     ~QGLWidgetPrivate() {}
 
diff --git a/src/opengl/qglpixelbuffer_x11.cpp b/src/opengl/qglpixelbuffer_x11.cpp
index 5b34cbb..32a42a2 100644
--- a/src/opengl/qglpixelbuffer_x11.cpp
+++ b/src/opengl/qglpixelbuffer_x11.cpp
@@ -181,7 +181,11 @@ bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidge
 
     qt_format_to_attrib_list(f, attribs);
 
-    GLXFBConfig *configs = glXChooseFBConfig(X11->display, X11->defaultScreen, attribs, &num_configs);
+    int screen = X11->defaultScreen;
+    if (shareWidget)
+        screen = shareWidget->x11Info().screen();
+
+    GLXFBConfig *configs = glXChooseFBConfig(X11->display, screen, attribs, &num_configs);
     if (configs && num_configs) {
         int res;
         glXGetFBConfigAttrib(X11->display, configs[0], GLX_LEVEL, &res);
diff --git a/src/opengl/qglpixmapfilter.cpp b/src/opengl/qglpixmapfilter.cpp
index 37bb7c0..d5a11d9 100644
--- a/src/opengl/qglpixmapfilter.cpp
+++ b/src/opengl/qglpixmapfilter.cpp
@@ -394,6 +394,7 @@ void QGLBlurTextureCache::insertBlurTextureInfo(const QPixmap &pixmap, QGLBlurTe
     static bool hookAdded = false;
     if (!hookAdded) {
         QImagePixmapCleanupHooks::instance()->addPixmapDataDestructionHook(pixmapDestroyed);
+        QImagePixmapCleanupHooks::instance()->addPixmapDataModificationHook(pixmapDestroyed);
         hookAdded = true;
     }