Turn the SoftwareContext plugin into the Scenegraph Software Adaptation

The 2D renderer will now become a built-in adaptation of scenegraph that
should always be available to fallback to when there are no other
renders available.  So rather than be an external plugin, now it is a
built in adaptation.

Change-Id: Ifa02fd50f3085ad1e6f1a73c3ce1e1825b677cc7
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop_p.h b/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop_p.h
new file mode 100644
index 0000000000..ed69f86eff
--- /dev/null
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderloop_p.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSGSOFTWARERENDERLOOP_H
+#define QSGSOFTWARERENDERLOOP_H
+
+#include <private/qsgrenderloop_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QSGSoftwareRenderLoop : public QSGRenderLoop
+{
+    Q_OBJECT
+public:
+    QSGSoftwareRenderLoop();
+    ~QSGSoftwareRenderLoop();
+
+    void show(QQuickWindow *window) override;
+    void hide(QQuickWindow *window) override;
+
+    void windowDestroyed(QQuickWindow *window) override;
+
+    void renderWindow(QQuickWindow *window);
+    void exposureChanged(QQuickWindow *window) override;
+    QImage grab(QQuickWindow *window) override;
+
+    void maybeUpdate(QQuickWindow *window) override;
+    void update(QQuickWindow *window) override { maybeUpdate(window); } // identical for this implementation.
+    void handleUpdateRequest(QQuickWindow *) override;
+
+    void releaseResources(QQuickWindow *) override { }
+
+    QSurface::SurfaceType windowSurfaceType() const override;
+
+    QAnimationDriver *animationDriver() const override { return 0; }
+
+    QSGContext *sceneGraphContext() const override;
+    QSGRenderContext *createRenderContext(QSGContext *) const override { return rc; }
+
+    struct WindowData {
+        bool updatePending : 1;
+        bool grabOnly : 1;
+    };
+
+    QHash<QQuickWindow *, WindowData> m_windows;
+
+    QSGContext *sg;
+    QSGRenderContext *rc;
+
+    QImage grabContent;
+};
+
+QT_END_NAMESPACE
+
+#endif // QSGSOFTWARERENDERLOOP_H