10 files changed, 412 insertions, 241 deletions

diff --git a/src/plugins/platforms/eglfs/eglfs.pri b/src/plugins/platforms/eglfs/eglfs.pri
index 4c066d6f26..390061c168 100644
--- a/src/plugins/platforms/eglfs/eglfs.pri
+++ b/src/plugins/platforms/eglfs/eglfs.pri
@@ -16,7 +16,8 @@ SOURCES +=  $$PWD/qeglfsintegration.cpp \
             $$PWD/qeglfsscreen.cpp \
             $$PWD/qeglfshooks_stub.cpp \
             $$PWD/qeglfscursor.cpp \
-            $$PWD/qeglfscontext.cpp
+            $$PWD/qeglfscontext.cpp \
+            $$PWD/qeglfscompositor.cpp
 
 HEADERS +=  $$PWD/qeglfsintegration.h \
             $$PWD/qeglfswindow.h \
@@ -24,7 +25,8 @@ HEADERS +=  $$PWD/qeglfsintegration.h \
             $$PWD/qeglfsscreen.h \
             $$PWD/qeglfscursor.h \
             $$PWD/qeglfshooks.h \
-            $$PWD/qeglfscontext.h
+            $$PWD/qeglfscontext.h \
+            $$PWD/qeglfscompositor.h
 
 QMAKE_LFLAGS += $$QMAKE_LFLAGS_NOUNDEF
 
diff --git a/src/plugins/platforms/eglfs/qeglfsbackingstore.cpp b/src/plugins/platforms/eglfs/qeglfsbackingstore.cpp
index ec2f4f9d91..8de8268616 100644
--- a/src/plugins/platforms/eglfs/qeglfsbackingstore.cpp
+++ b/src/plugins/platforms/eglfs/qeglfsbackingstore.cpp
@@ -40,120 +40,24 @@
 ****************************************************************************/
 
 #include "qeglfsbackingstore.h"
+#include "qeglfscompositor.h"
 #include "qeglfscursor.h"
 #include "qeglfswindow.h"
+#include "qeglfscontext.h"
 
-#include <QtGui/QOpenGLContext>
 #include <QtGui/QOpenGLPaintDevice>
 #include <QtGui/QOpenGLShaderProgram>
 
-#include <QtGui/QScreen>
-
 QT_BEGIN_NAMESPACE
 
-QEglFSCompositor::QEglFSCompositor()
-    : m_rootWindow(0)
-{
-    m_updateTimer.setSingleShot(true);
-    m_updateTimer.setInterval(0);
-    connect(&m_updateTimer, SIGNAL(timeout()), SLOT(renderAll()));
-}
-
-void QEglFSCompositor::schedule(QEglFSWindow *rootWindow)
-{
-    m_rootWindow = rootWindow;
-    if (!m_updateTimer.isActive())
-        m_updateTimer.start();
-}
-
-void QEglFSCompositor::renderAll()
-{
-    Q_ASSERT(m_rootWindow);
-    QOpenGLContext *context = QEglFSBackingStore::makeRootCurrent(m_rootWindow);
-
-    QEglFSScreen *screen = m_rootWindow->screen();
-    QList<QEglFSWindow *> windows = screen->windows();
-    for (int i = 0; i < windows.size(); ++i) {
-        if (windows.at(i)->backingStore())
-            render(windows.at(i), m_rootWindow);
-    }
-
-    context->swapBuffers(m_rootWindow->window());
-    context->doneCurrent();
-}
-
-void QEglFSCompositor::render(QEglFSWindow *window, QEglFSWindow *rootWindow)
-{
-    QEglFSBackingStore *rootBackingStore = rootWindow->backingStore();
-    rootBackingStore->m_program->bind();
-
-    const GLfloat textureCoordinates[] = {
-        0, 0,
-        1, 0,
-        1, 1,
-        0, 1
-    };
-
-    QRectF sr = window->screen()->geometry();
-    QRect r = window->window()->geometry();
-    QPoint tl = r.topLeft();
-    QPoint br = r.bottomRight();
-
-    GLfloat x1 = (tl.x() / sr.width()) * 2 - 1;
-    GLfloat x2 = (br.x() / sr.width()) * 2 - 1;
-    GLfloat y1 = ((sr.height() - tl.y()) / sr.height()) * 2 - 1;
-    GLfloat y2 = ((sr.height() - br.y()) / sr.height()) * 2 - 1;
-
-    const GLfloat vertexCoordinates[] = {
-        x1, y1,
-        x2, y1,
-        x2, y2,
-        x1, y2
-    };
-
-    glViewport(0, 0, sr.width(), sr.height());
-
-    glEnableVertexAttribArray(rootBackingStore->m_vertexCoordEntry);
-    glEnableVertexAttribArray(rootBackingStore->m_textureCoordEntry);
-
-    glVertexAttribPointer(rootBackingStore->m_vertexCoordEntry, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinates);
-    glVertexAttribPointer(rootBackingStore->m_textureCoordEntry, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinates);
-
-    glBindTexture(GL_TEXTURE_2D, window->backingStore()->m_texture);
-
-    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-    rootBackingStore->m_program->release();
-    glBindTexture(GL_TEXTURE_2D, 0);
-    glDisableVertexAttribArray(rootBackingStore->m_vertexCoordEntry);
-    glDisableVertexAttribArray(rootBackingStore->m_textureCoordEntry);
-}
-
-static QEglFSCompositor *compositor = 0;
-
-QEglFSCompositor *QEglFSCompositor::instance()
-{
-    if (!compositor)
-        compositor = new QEglFSCompositor;
-    return compositor;
-}
-
 QEglFSBackingStore::QEglFSBackingStore(QWindow *window)
-    : QPlatformBackingStore(window)
-    , m_window(static_cast<QEglFSWindow *>(window->handle()))
-    , m_context(0)
-    , m_texture(0)
-    , m_program(0)
+    : QPlatformBackingStore(window),
+      m_window(static_cast<QEglFSWindow *>(window->handle())),
+      m_texture(0)
 {
     m_window->setBackingStore(this);
 }
 
-QEglFSBackingStore::~QEglFSBackingStore()
-{
-    delete m_program;
-    delete m_context;
-}
-
 QPaintDevice *QEglFSBackingStore::paintDevice()
 {
     return &m_image;
@@ -186,7 +90,8 @@ void QEglFSBackingStore::updateTexture()
             // if the sub-rect is full-width we can pass the image data directly to
             // OpenGL instead of copying, since there's no gap between scanlines
             if (rect.width() == imageRect.width()) {
-                glTexSubImage2D(GL_TEXTURE_2D, 0, 0, rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE, m_image.constScanLine(rect.y()));
+                glTexSubImage2D(GL_TEXTURE_2D, 0, 0, rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE,
+                                m_image.constScanLine(rect.y()));
             } else {
                 glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x(), rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE,
                     m_image.copy(rect).constBits());
@@ -207,63 +112,14 @@ void QEglFSBackingStore::flush(QWindow *window, const QRegion &region, const QPo
     qWarning("QEglBackingStore::flush %p", window);
 #endif
 
-    m_window->create();
     QEglFSWindow *rootWin = m_window->screen()->rootWindow();
-    if (rootWin) {
-        makeRootCurrent(rootWin);
-        updateTexture();
-        QEglFSCompositor::instance()->schedule(rootWin);
-    }
-}
-
-void QEglFSBackingStore::makeCurrent()
-{
-    Q_ASSERT(m_window->hasNativeWindow());
-
-    QWindow *wnd = window();
-    if (!m_context) {
-        m_context = new QOpenGLContext;
-        m_context->setFormat(wnd->requestedFormat());
-        m_context->setScreen(wnd->screen());
-        m_context->create();
-    }
+    if (!rootWin)
+        return;
 
-    m_context->makeCurrent(wnd);
-}
-
-QOpenGLContext *QEglFSBackingStore::makeRootCurrent(QEglFSWindow *rootWin)
-{
-    Q_ASSERT(rootWin->hasNativeWindow() && rootWin->isRasterRoot());
-
-    QEglFSBackingStore *rootBackingStore = rootWin->backingStore();
-    rootBackingStore->makeCurrent();
-    if (!rootBackingStore->m_program) {
-        static const char *textureVertexProgram =
-            "attribute highp vec2 vertexCoordEntry;\n"
-            "attribute highp vec2 textureCoordEntry;\n"
-            "varying highp vec2 textureCoord;\n"
-            "void main() {\n"
-            "   textureCoord = textureCoordEntry;\n"
-            "   gl_Position = vec4(vertexCoordEntry, 0.0, 1.0);\n"
-            "}\n";
-
-        static const char *textureFragmentProgram =
-            "uniform sampler2D texture;\n"
-            "varying highp vec2 textureCoord;\n"
-            "void main() {\n"
-            "   gl_FragColor = texture2D(texture, textureCoord).bgra;\n"
-            "}\n";
-
-        rootBackingStore->m_program = new QOpenGLShaderProgram;
-
-        rootBackingStore->m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, textureVertexProgram);
-        rootBackingStore->m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, textureFragmentProgram);
-        rootBackingStore->m_program->link();
-
-        rootBackingStore->m_vertexCoordEntry = rootBackingStore->m_program->attributeLocation("vertexCoordEntry");
-        rootBackingStore->m_textureCoordEntry = rootBackingStore->m_program->attributeLocation("textureCoordEntry");
-    }
-    return rootBackingStore->m_context;
+    m_window->create();
+    rootWin->screen()->rootContext()->makeCurrent(rootWin->window());
+    updateTexture();
+    QEglFSCompositor::instance()->schedule(rootWin->screen());
 }
 
 void QEglFSBackingStore::beginPaint(const QRegion &rgn)
@@ -275,9 +131,14 @@ void QEglFSBackingStore::resize(const QSize &size, const QRegion &staticContents
 {
     Q_UNUSED(staticContents);
 
+    QEglFSWindow *rootWin = m_window->screen()->rootWindow();
+    if (!rootWin)
+        return;
+
     m_image = QImage(size, QImage::Format_RGB32);
     m_window->create();
-    makeRootCurrent(m_window->screen()->rootWindow());
+
+    rootWin->screen()->rootContext()->makeCurrent(rootWin->window());
 
     if (m_texture)
         glDeleteTextures(1, &m_texture);
diff --git a/src/plugins/platforms/eglfs/qeglfsbackingstore.h b/src/plugins/platforms/eglfs/qeglfsbackingstore.h
index 39bdab1563..535428aac1 100644
--- a/src/plugins/platforms/eglfs/qeglfsbackingstore.h
+++ b/src/plugins/platforms/eglfs/qeglfsbackingstore.h
@@ -46,41 +46,16 @@
 
 #include <QImage>
 #include <QRegion>
-#include <QTimer>
 
 QT_BEGIN_NAMESPACE
 
-class QOpenGLContext;
 class QOpenGLPaintDevice;
-class QOpenGLShaderProgram;
 class QEglFSWindow;
 
-class QEglFSCompositor : public QObject
-{
-    Q_OBJECT
-
-public:
-    QEglFSCompositor();
-
-    void schedule(QEglFSWindow *rootWindow);
-
-    static QEglFSCompositor *instance();
-
-private slots:
-    void renderAll();
-
-private:
-    void render(QEglFSWindow *window, QEglFSWindow *rootWindow);
-
-    QEglFSWindow *m_rootWindow;
-    QTimer m_updateTimer;
-};
-
 class QEglFSBackingStore : public QPlatformBackingStore
 {
 public:
     QEglFSBackingStore(QWindow *window);
-    ~QEglFSBackingStore();
 
     QPaintDevice *paintDevice();
 
@@ -89,21 +64,15 @@ public:
     void flush(QWindow *window, const QRegion &region, const QPoint &offset);
     void resize(const QSize &size, const QRegion &staticContents);
 
+    uint texture() const { return m_texture; }
+
 private:
-    void makeCurrent();
-    static QOpenGLContext *makeRootCurrent(QEglFSWindow *rootWin);
     void updateTexture();
 
     QEglFSWindow *m_window;
-    QOpenGLContext *m_context;
     QImage m_image;
     uint m_texture;
     QRegion m_dirty;
-    QOpenGLShaderProgram *m_program;
-    int m_vertexCoordEntry;
-    int m_textureCoordEntry;
-
-    friend class QEglFSCompositor;
 };
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfscompositor.cpp b/src/plugins/platforms/eglfs/qeglfscompositor.cpp
new file mode 100644
index 0000000000..9db43a57a1
--- /dev/null
+++ b/src/plugins/platforms/eglfs/qeglfscompositor.cpp
@@ -0,0 +1,198 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglfscompositor.h"
+#include "qeglfswindow.h"
+#include "qeglfscontext.h"
+
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QOpenGLShaderProgram>
+#include <QtGui/QOpenGLFramebufferObject>
+
+QT_BEGIN_NAMESPACE
+
+static QEglFSCompositor *compositor = 0;
+
+QEglFSCompositor::QEglFSCompositor()
+    : m_screen(0),
+      m_program(0)
+{
+    Q_ASSERT(!compositor);
+    m_updateTimer.setSingleShot(true);
+    m_updateTimer.setInterval(0);
+    connect(&m_updateTimer, SIGNAL(timeout()), SLOT(renderAll()));
+}
+
+QEglFSCompositor::~QEglFSCompositor()
+{
+    Q_ASSERT(compositor == this);
+    delete m_program;
+    compositor = 0;
+}
+
+void QEglFSCompositor::schedule(QEglFSScreen *screen)
+{
+    m_screen = screen;
+    if (!m_updateTimer.isActive())
+        m_updateTimer.start();
+}
+
+void QEglFSCompositor::renderAll()
+{
+    QEglFSWindow *rootWin = m_screen->rootWindow();
+    if (!rootWin)
+        return;
+
+    Q_ASSERT(rootWin->hasNativeWindow());
+    QOpenGLContext *context = m_screen->rootContext();
+    Q_ASSERT(context);
+
+    context->makeCurrent(rootWin->window());
+    ensureProgram();
+    m_program->bind();
+
+    QList<QEglFSWindow *> windows = m_screen->windows();
+    for (int i = 0; i < windows.size(); ++i) {
+        QEglFSWindow *window = windows.at(i);
+        uint texture = window->texture();
+        if (texture)
+            render(window, texture, window->isRaster());
+    }
+
+    m_program->release();
+    context->swapBuffers(rootWin->window());
+}
+
+void QEglFSCompositor::ensureProgram()
+{
+    if (!m_program) {
+        static const char *textureVertexProgram =
+            "attribute highp vec2 vertexCoordEntry;\n"
+            "attribute highp vec2 textureCoordEntry;\n"
+            "varying highp vec2 textureCoord;\n"
+            "void main() {\n"
+            "   textureCoord = textureCoordEntry;\n"
+            "   gl_Position = vec4(vertexCoordEntry, 0.0, 1.0);\n"
+            "}\n";
+
+        static const char *textureFragmentProgram =
+            "uniform sampler2D texture;\n"
+            "varying highp vec2 textureCoord;\n"
+            "uniform bool isRaster;\n"
+            "void main() {\n"
+            "   lowp vec4 c = texture2D(texture, textureCoord);\n"
+            "   gl_FragColor = isRaster ? c.bgra : c.rgba;\n"
+            "}\n";
+
+        m_program = new QOpenGLShaderProgram;
+
+        m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, textureVertexProgram);
+        m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, textureFragmentProgram);
+        m_program->link();
+
+        m_vertexCoordEntry = m_program->attributeLocation("vertexCoordEntry");
+        m_textureCoordEntry = m_program->attributeLocation("textureCoordEntry");
+        m_isRasterEntry = m_program->uniformLocation("isRaster");
+    }
+}
+
+void QEglFSCompositor::render(QEglFSWindow *window, uint texture, bool raster)
+{
+    const GLfloat textureCoordinates[] = {
+        0, 0,
+        1, 0,
+        1, 1,
+        0, 1
+    };
+
+    QRectF sr = window->screen()->geometry();
+    QRect r = window->window()->geometry();
+    QPoint tl = r.topLeft();
+    QPoint br = r.bottomRight();
+
+    GLfloat x1 = (tl.x() / sr.width()) * 2 - 1;
+    GLfloat x2 = (br.x() / sr.width()) * 2 - 1;
+    GLfloat y1 = ((sr.height() - tl.y()) / sr.height()) * 2 - 1;
+    GLfloat y2 = ((sr.height() - br.y()) / sr.height()) * 2 - 1;
+
+    if (!raster)
+        qSwap(y1, y2);
+
+    const GLfloat vertexCoordinates[] = {
+        x1, y1,
+        x2, y1,
+        x2, y2,
+        x1, y2
+    };
+
+    glViewport(0, 0, sr.width(), sr.height());
+
+    glEnableVertexAttribArray(m_vertexCoordEntry);
+    glEnableVertexAttribArray(m_textureCoordEntry);
+
+    glVertexAttribPointer(m_vertexCoordEntry, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinates);
+    glVertexAttribPointer(m_textureCoordEntry, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinates);
+
+    glBindTexture(GL_TEXTURE_2D, texture);
+
+    m_program->setUniformValue(m_isRasterEntry, raster);
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glDisableVertexAttribArray(m_vertexCoordEntry);
+    glDisableVertexAttribArray(m_textureCoordEntry);
+}
+
+QEglFSCompositor *QEglFSCompositor::instance()
+{
+    if (!compositor)
+        compositor = new QEglFSCompositor;
+    return compositor;
+}
+
+void QEglFSCompositor::destroy()
+{
+    delete compositor;
+    compositor = 0;
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfscompositor.h b/src/plugins/platforms/eglfs/qeglfscompositor.h
new file mode 100644
index 0000000000..ade2e06031
--- /dev/null
+++ b/src/plugins/platforms/eglfs/qeglfscompositor.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEGLFSCOMPOSITOR_H
+#define QEGLFSCOMPOSITOR_H
+
+#include <QTimer>
+
+QT_BEGIN_NAMESPACE
+
+class QEglFSScreen;
+class QEglFSWindow;
+class QOpenGLShaderProgram;
+
+class QEglFSCompositor : public QObject
+{
+    Q_OBJECT
+
+public:
+    void schedule(QEglFSScreen *screen);
+
+    static QEglFSCompositor *instance();
+    static void destroy();
+
+private slots:
+    void renderAll();
+
+private:
+    QEglFSCompositor();
+    ~QEglFSCompositor();
+
+    void render(QEglFSWindow *window, uint texture, bool raster);
+    void ensureProgram();
+
+    QEglFSScreen *m_screen;
+    QTimer m_updateTimer;
+    QOpenGLShaderProgram *m_program;
+    int m_vertexCoordEntry;
+    int m_textureCoordEntry;
+    int m_isRasterEntry;
+};
+
+QT_END_NAMESPACE
+
+#endif // QEGLFSCOMPOSITOR_H
diff --git a/src/plugins/platforms/eglfs/qeglfsintegration.cpp b/src/plugins/platforms/eglfs/qeglfsintegration.cpp
index 45dccfa79f..67f0c35ed7 100644
--- a/src/plugins/platforms/eglfs/qeglfsintegration.cpp
+++ b/src/plugins/platforms/eglfs/qeglfsintegration.cpp
@@ -43,6 +43,7 @@
 
 #include "qeglfswindow.h"
 #include "qeglfsbackingstore.h"
+#include "qeglfscompositor.h"
 #include "qeglfshooks.h"
 
 #include <QtGui/private/qguiapplication_p.h>
@@ -75,8 +76,6 @@
 
 QT_BEGIN_NAMESPACE
 
-static void *eglContextForContext(QOpenGLContext *context);
-
 QEglFSIntegration::QEglFSIntegration()
     : mFontDb(new QGenericUnixFontDatabase)
     , mServices(new QGenericUnixServices)
@@ -108,8 +107,8 @@ QEglFSIntegration::QEglFSIntegration()
 
 QEglFSIntegration::~QEglFSIntegration()
 {
+    QEglFSCompositor::destroy();
     delete mScreen;
-
     eglTerminate(mDisplay);
     QEglFSHooks::hooks()->platformDestroy();
 }
@@ -131,9 +130,11 @@ bool QEglFSIntegration::hasCapability(QPlatformIntegration::Capability cap) cons
 
 QPlatformWindow *QEglFSIntegration::createPlatformWindow(QWindow *window) const
 {
+    QWindowSystemInterface::flushWindowSystemEvents();
     QEglFSWindow *w = new QEglFSWindow(window);
     w->create();
-    w->requestActivateWindow();
+    if (window->type() != Qt::ToolTip)
+        w->requestActivateWindow();
     return w;
 }
 
@@ -263,15 +264,6 @@ void *QEglFSIntegration::nativeResourceForContext(const QByteArray &resource, QO
     return result;
 }
 
-QPlatformNativeInterface::NativeResourceForContextFunction QEglFSIntegration::nativeResourceFunctionForContext(const QByteArray &resource)
-{
-    QByteArray lowerCaseResource = resource.toLower();
-    if (lowerCaseResource == "get_egl_context")
-        return NativeResourceForContextFunction(eglContextForContext);
-
-    return 0;
-}
-
 static void *eglContextForContext(QOpenGLContext *context)
 {
     Q_ASSERT(context);
@@ -283,6 +275,15 @@ static void *eglContextForContext(QOpenGLContext *context)
     return handle->eglContext();
 }
 
+QPlatformNativeInterface::NativeResourceForContextFunction QEglFSIntegration::nativeResourceFunctionForContext(const QByteArray &resource)
+{
+    QByteArray lowerCaseResource = resource.toLower();
+    if (lowerCaseResource == "get_egl_context")
+        return NativeResourceForContextFunction(eglContextForContext);
+
+    return 0;
+}
+
 EGLConfig QEglFSIntegration::chooseConfig(EGLDisplay display, const QSurfaceFormat &format)
 {
     class Chooser : public QEglConfigChooser {
diff --git a/src/plugins/platforms/eglfs/qeglfsscreen.cpp b/src/plugins/platforms/eglfs/qeglfsscreen.cpp
index 62f764b392..bd3601bf06 100644
--- a/src/plugins/platforms/eglfs/qeglfsscreen.cpp
+++ b/src/plugins/platforms/eglfs/qeglfsscreen.cpp
@@ -47,9 +47,10 @@
 QT_BEGIN_NAMESPACE
 
 QEglFSScreen::QEglFSScreen(EGLDisplay dpy)
-    : m_dpy(dpy)
-    , m_surface(EGL_NO_SURFACE)
-    , m_cursor(0)
+    : m_dpy(dpy),
+      m_surface(EGL_NO_SURFACE),
+      m_cursor(0),
+      m_rootContext(0)
 {
 #ifdef QEGL_EXTRA_DEBUG
     qWarning("QEglScreen %p\n", this);
@@ -121,10 +122,23 @@ void QEglFSScreen::removeWindow(QEglFSWindow *window)
     m_windows.removeOne(window);
 }
 
+void QEglFSScreen::moveToTop(QEglFSWindow *window)
+{
+    m_windows.removeOne(window);
+    m_windows.append(window);
+}
+
+void QEglFSScreen::changeWindowIndex(QEglFSWindow *window, int newIdx)
+{
+    int idx = m_windows.indexOf(window);
+    if (idx != -1 && idx != newIdx)
+        m_windows.move(idx, newIdx);
+}
+
 QEglFSWindow *QEglFSScreen::rootWindow()
 {
     Q_FOREACH (QEglFSWindow *window, m_windows) {
-        if (window->isRasterRoot())
+        if (window->hasNativeWindow())
             return window;
     }
     return 0;
diff --git a/src/plugins/platforms/eglfs/qeglfsscreen.h b/src/plugins/platforms/eglfs/qeglfsscreen.h
index bf7e88bd50..578a6cf20d 100644
--- a/src/plugins/platforms/eglfs/qeglfsscreen.h
+++ b/src/plugins/platforms/eglfs/qeglfsscreen.h
@@ -50,9 +50,9 @@
 
 QT_BEGIN_NAMESPACE
 
-class QPlatformOpenGLContext;
 class QEglFSCursor;
 class QEglFSWindow;
+class QOpenGLContext;
 
 class QEglFSScreen : public QPlatformScreen
 {
@@ -77,7 +77,11 @@ public:
     QList<QEglFSWindow *> windows() const { return m_windows; }
     void addWindow(QEglFSWindow *window);
     void removeWindow(QEglFSWindow *window);
+    void moveToTop(QEglFSWindow *window);
+    void changeWindowIndex(QEglFSWindow *window, int newIdx);
     QEglFSWindow *rootWindow();
+    QOpenGLContext *rootContext() { return m_rootContext; }
+    void setRootContext(QOpenGLContext *context) { m_rootContext = context; }
 
 protected:
     void setPrimarySurface(EGLSurface surface);
@@ -89,6 +93,7 @@ private:
     EGLSurface m_surface;
     QEglFSCursor *m_cursor;
     QList<QEglFSWindow *> m_windows;
+    QOpenGLContext *m_rootContext;
 };
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfswindow.cpp b/src/plugins/platforms/eglfs/qeglfswindow.cpp
index 17ab68f747..70f0e437b2 100644
--- a/src/plugins/platforms/eglfs/qeglfswindow.cpp
+++ b/src/plugins/platforms/eglfs/qeglfswindow.cpp
@@ -42,9 +42,11 @@
 #include "qeglfswindow.h"
 #include "qeglfshooks.h"
 #include "qeglfscursor.h"
+#include "qeglfsbackingstore.h"
 #include <qpa/qwindowsysteminterface.h>
 #include <qpa/qplatformintegration.h>
 #include <private/qguiapplication_p.h>
+#include <QtGui/QOpenGLContext>
 
 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 
@@ -99,18 +101,21 @@ void QEglFSWindow::create()
     if (window()->surfaceType() == QSurface::RasterSurface)
         m_flags |= IsRaster;
 
-    // Stop if there is already a raster root window backed by a native window and
-    // surface. Other raster windows will not have their own native window, surface and
-    // context. Instead, they will be composited onto the root window's surface.
-    if (screen()->primarySurface() != EGL_NO_SURFACE) {
-        if (m_flags.testFlag(IsRaster) && screen()->rootWindow()->m_flags.testFlag(IsRaster))
+    // Stop if there is already a window backed by a native window and surface. Additional
+    // raster windows will not have their own native window, surface and context. Instead,
+    // they will be composited onto the root window's surface.
+    QEglFSScreen *screen = this->screen();
+    if (screen->primarySurface() != EGL_NO_SURFACE) {
+        if (m_flags.testFlag(IsRaster) && screen->rootWindow()->m_flags.testFlag(IsRaster))
             return;
 
-#ifndef Q_OS_ANDROID
+#if !defined(Q_OS_ANDROID) || defined(Q_OS_ANDROID_NO_SDK)
         // We can have either a single OpenGL window or multiple raster windows.
         // Other combinations cannot work.
         qFatal("EGLFS: OpenGL windows cannot be mixed with others.");
 #endif
+
+        return;
     }
 
     window()->setSurfaceType(QSurface::OpenGLSurface);
@@ -118,31 +123,40 @@ void QEglFSWindow::create()
     setGeometry(QRect()); // will become fullscreen
     QWindowSystemInterface::handleExposeEvent(window(), geometry());
 
-    EGLDisplay display = static_cast<QEglFSScreen *>(screen())->display();
+    EGLDisplay display = static_cast<QEglFSScreen *>(screen)->display();
     QSurfaceFormat platformFormat = QEglFSHooks::hooks()->surfaceFormatFor(window()->requestedFormat());
     m_config = QEglFSIntegration::chooseConfig(display, platformFormat);
     m_format = q_glFormatFromConfig(display, m_config);
 
     resetSurface();
 
-    if (screen()->primarySurface() == EGL_NO_SURFACE) {
-        screen()->setPrimarySurface(m_surface);
-        m_flags |= IsRasterRoot;
+    screen->setPrimarySurface(m_surface);
+
+    if (m_flags.testFlag(IsRaster)) {
+        QOpenGLContext *context = new QOpenGLContext(QGuiApplication::instance());
+        context->setFormat(window()->requestedFormat());
+        context->setScreen(window()->screen());
+        context->create();
+        screen->setRootContext(context);
     }
 }
 
 void QEglFSWindow::destroy()
 {
+    QEglFSScreen *screen = this->screen();
     if (m_flags.testFlag(HasNativeWindow)) {
-        QEglFSCursor *cursor = static_cast<QEglFSCursor *>(screen()->cursor());
+        QEglFSCursor *cursor = static_cast<QEglFSCursor *>(screen->cursor());
         if (cursor)
             cursor->resetResources();
-        if (screen()->primarySurface() == m_surface)
-            screen()->setPrimarySurface(EGL_NO_SURFACE);
+
+        if (screen->primarySurface() == m_surface)
+            screen->setPrimarySurface(EGL_NO_SURFACE);
+
         invalidateSurface();
     }
+
     m_flags = 0;
-    screen()->removeWindow(this);
+    screen->removeWindow(this);
 }
 
 // The virtual functions resetSurface and invalidateSurface may get overridden
@@ -182,20 +196,15 @@ void QEglFSWindow::setVisible(bool visible)
         } else {
             screen()->removeWindow(this);
             windows = screen()->windows();
-            // try activating the window below
             if (windows.size())
                 windows.last()->requestActivateWindow();
         }
     }
 
-    // trigger an update
-    QEglFSWindow *rootWin = screen()->rootWindow();
-    if (rootWin) {
-        QWindowSystemInterface::handleExposeEvent(rootWin->window(), rootWin->window()->geometry());
-        QWindowSystemInterface::flushWindowSystemEvents();
-    }
+    QWindowSystemInterface::handleExposeEvent(window(), window()->geometry());
 
-    QPlatformWindow::setVisible(visible);
+    if (visible)
+        QWindowSystemInterface::flushWindowSystemEvents();
 }
 
 void QEglFSWindow::setGeometry(const QRect &r)
@@ -230,13 +239,31 @@ WId QEglFSWindow::winId() const
 
 void QEglFSWindow::requestActivateWindow()
 {
+    if (window()->type() != Qt::Desktop)
+        screen()->moveToTop(this);
+
+    QWindowSystemInterface::handleWindowActivated(window());
+    QWindowSystemInterface::handleExposeEvent(window(), window()->geometry());
+}
+
+void QEglFSWindow::raise()
+{
     if (window()->type() != Qt::Desktop) {
-        // move to the end of the list, to be on top
-        screen()->removeWindow(this);
-        screen()->addWindow(this);
+        screen()->moveToTop(this);
+        QWindowSystemInterface::handleExposeEvent(window(), window()->geometry());
     }
+}
 
-    QWindowSystemInterface::handleWindowActivated(window());
+void QEglFSWindow::lower()
+{
+    QList<QEglFSWindow *> windows = screen()->windows();
+    if (window()->type() != Qt::Desktop && windows.count() > 1) {
+        int idx = windows.indexOf(this);
+        if (idx > 0) {
+            screen()->changeWindowIndex(this, idx - 1);
+            QWindowSystemInterface::handleExposeEvent(windows.last()->window(), windows.last()->geometry());
+        }
+    }
 }
 
 EGLSurface QEglFSWindow::surface() const
@@ -259,4 +286,12 @@ QEglFSScreen *QEglFSWindow::screen() const
     return static_cast<QEglFSScreen *>(QPlatformWindow::screen());
 }
 
+uint QEglFSWindow::texture() const
+{
+    if (m_backingStore)
+        return m_backingStore->texture();
+
+    return 0;
+}
+
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfswindow.h b/src/plugins/platforms/eglfs/qeglfswindow.h
index 71c0ed5c27..ee3c194a7c 100644
--- a/src/plugins/platforms/eglfs/qeglfswindow.h
+++ b/src/plugins/platforms/eglfs/qeglfswindow.h
@@ -62,6 +62,8 @@ public:
     WId winId() const;
     void setVisible(bool visible);
     void requestActivateWindow();
+    void raise();
+    void lower();
 
     EGLSurface surface() const;
     QSurfaceFormat format() const;
@@ -73,11 +75,13 @@ public:
     void destroy();
 
     bool hasNativeWindow() const { return m_flags.testFlag(HasNativeWindow); }
-    bool isRasterRoot() const { return m_flags.testFlag(IsRasterRoot); }
+    bool isRaster() const { return m_flags.testFlag(IsRaster); }
 
     QEglFSBackingStore *backingStore() { return m_backingStore; }
     void setBackingStore(QEglFSBackingStore *backingStore) { m_backingStore = backingStore; }
 
+    uint texture() const;
+
     virtual void invalidateSurface();
     virtual void resetSurface();
 
@@ -93,9 +97,8 @@ private:
 
     enum Flag {
         Created = 0x01,
-        HasNativeWindow = 0x02,
-        IsRaster = 0x04,
-        IsRasterRoot = 0x08
+        IsRaster = 0x02,
+        HasNativeWindow = 0x04
     };
     Q_DECLARE_FLAGS(Flags, Flag);
     Flags m_flags;