Raspberry pi platform plugin.

src/plugins/platforms/qtplatformplugin-rpi/cursor.json

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+{
+    "image": ":/cursor-atlas.png",
+    "cursorsPerRow": 8,
+    "hotSpots": [
+        [7, 2],
+        [13, 3],
+        [13, 13],
+        [13, 13],
+        [14, 15],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [13, 13],
+        [10, 1],
+        [13, 13],
+        [0, 0],
+        [0, 0],
+        [13, 13],
+        [13, 13]
+    ]
+}
+

src/plugins/platforms/qtplatformplugin-rpi/cursor.qrc

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+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+   <file>cursor-atlas.png</file>
+   <file>cursor.json</file>
+</qresource>
+</RCC>
+

src/plugins/platforms/qtplatformplugin-rpi/eglfsrpi.json

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+{
+    "Keys": [ "eglfsrpi" ]
+}

src/plugins/platforms/qtplatformplugin-rpi/main.cpp

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+/****************************************************************************
+**
+** Copyright (C) 2012 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 <qpa/qplatformintegrationplugin.h>
+#include "qeglfsintegration.h"
+
+QT_BEGIN_NAMESPACE
+
+class QEglFSIntegrationPlugin : public QPlatformIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.2" FILE "eglfsrpi.json")
+public:
+    QPlatformIntegration *create(const QString&, const QStringList&);
+};
+
+QPlatformIntegration* QEglFSIntegrationPlugin::create(const QString& system, const QStringList& paramList)
+{
+    Q_UNUSED(paramList);
+    if (system.toLower() == "eglfsrpi")
+        return new QEglFSIntegration;
+
+    return 0;
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"

src/plugins/platforms/qtplatformplugin-rpi/qeglfsbackingstore.cpp

@@ -0,0 +1,228 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 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 "qeglfsbackingstore.h"
+#include "qeglfscursor.h"
+#include "qeglfswindow.h"
+
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QOpenGLPaintDevice>
+#include <QtGui/QOpenGLShaderProgram>
+
+#include <QtGui/QScreen>
+
+QT_BEGIN_NAMESPACE
+
+QEglFSBackingStore::QEglFSBackingStore(QWindow *window)
+    : QPlatformBackingStore(window)
+    , m_context(new QOpenGLContext)
+    , m_texture(0)
+    , m_program(0)
+{
+    m_context->setFormat(window->requestedFormat());
+    m_context->setScreen(window->screen());
+    m_context->create();
+}
+
+QEglFSBackingStore::~QEglFSBackingStore()
+{
+    delete m_context;
+}
+
+QPaintDevice *QEglFSBackingStore::paintDevice()
+{
+    return &m_image;
+}
+
+void QEglFSBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(region);
+    Q_UNUSED(offset);
+
+    makeCurrent();
+
+#ifdef QEGL_EXTRA_DEBUG
+    qWarning("QEglBackingStore::flush %p", window);
+#endif
+
+    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"
+            "void main() {\n"
+            "   gl_FragColor = texture2D(texture, textureCoord).bgra;\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_program->bind();
+
+    const GLfloat textureCoordinates[] = {
+        0, 1,
+        1, 1,
+        1, 0,
+        0, 0
+    };
+
+    QRectF r = window->geometry();
+    QRectF sr = window->screen()->geometry();
+
+    GLfloat x1 = (r.left() / sr.width()) * 2 - 1;
+    GLfloat x2 = (r.right() / sr.width()) * 2 - 1;
+    GLfloat y1 = (r.top() / sr.height()) * 2 - 1;
+    GLfloat y2 = (r.bottom() / sr.height()) * 2 - 1;
+
+    const GLfloat vertexCoordinates[] = {
+        x1, y1,
+        x2, y1,
+        x2, y2,
+        x1, y2
+    };
+
+    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, m_texture);
+
+    if (!m_dirty.isNull()) {
+        QRect imageRect = m_image.rect();
+
+        QRegion fixed;
+        foreach (const QRect &rect, m_dirty.rects()) {
+            // intersect with image rect to be sure
+            QRect r = imageRect & rect;
+
+            // if the rect is wide enough it's cheaper to just
+            // extend it instead of doing an image copy
+            if (r.width() >= imageRect.width() / 2) {
+                r.setX(0);
+                r.setWidth(imageRect.width());
+            }
+
+            fixed |= r;
+        }
+
+        foreach (const QRect &rect, fixed.rects()) {
+            // 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()));
+            } else {
+                glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x(), rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE,
+                    m_image.copy(rect).constBits());
+            }
+        }
+
+        m_dirty = QRegion();
+    }
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    m_program->release();
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glDisableVertexAttribArray(m_vertexCoordEntry);
+    glDisableVertexAttribArray(m_textureCoordEntry);
+
+    // draw the cursor
+    if (QEglFSCursor *cursor = static_cast<QEglFSCursor *>(window->screen()->handle()->cursor()))
+        cursor->paintOnScreen();
+
+    m_context->swapBuffers(window);
+
+    m_context->doneCurrent();
+}
+
+void QEglFSBackingStore::makeCurrent()
+{
+    // needed to prevent QOpenGLContext::makeCurrent() from failing
+    window()->setSurfaceType(QSurface::OpenGLSurface);
+    (static_cast<QEglFSWindow *>(window()->handle()))->create();
+    m_context->makeCurrent(window());
+}
+
+void QEglFSBackingStore::beginPaint(const QRegion &rgn)
+{
+    m_dirty = m_dirty | rgn;
+}
+
+void QEglFSBackingStore::endPaint()
+{
+}
+
+void QEglFSBackingStore::resize(const QSize &size, const QRegion &staticContents)
+{
+    Q_UNUSED(staticContents);
+
+    m_image = QImage(size, QImage::Format_RGB32);
+    makeCurrent();
+    if (m_texture)
+        glDeleteTextures(1, &m_texture);
+    glGenTextures(1, &m_texture);
+    glBindTexture(GL_TEXTURE_2D, m_texture);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, size.width(), size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+}
+
+QT_END_NAMESPACE