Added QSGRenderNode class.

Change-Id: I8c903cae490158b864af60f53c10c10f2faea7c0
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/src/quick/scenegraph/coreapi/qsgrendernode_p.h b/src/quick/scenegraph/coreapi/qsgrendernode_p.h
new file mode 100644
index 0000000000..a2f2be828e
--- /dev/null
+++ b/src/quick/scenegraph/coreapi/qsgrendernode_p.h
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSGRENDERNODE_P_H
+#define QSGRENDERNODE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qsgnode.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class Q_QUICK_EXPORT QSGRenderNode : public QSGNode
+{
+public:
+    enum StateFlag
+    {
+        DepthState = 0x01, // depth mask, depth test enable, depth func, clear depth
+        StencilState = 0x02, // stencil mask, stencil test enable, stencil op, stencil func, clear stencil
+        ScissorState = 0x04, // scissor enable, scissor test enable
+        ColorState = 0x08, // clear color, color mask
+        BlendState = 0x10, // blend enable, blend func
+        CullState = 0x20, // front face, cull face enable
+        ViewportState = 0x40 // viewport
+    };
+    Q_DECLARE_FLAGS(StateFlags, StateFlag)
+
+    struct RenderState
+    {
+        // The model-view matrix can be retrieved with matrix().
+        // The opacity can be retrieved with inheritedOpacity().
+        const QMatrix4x4 *projectionMatrix;
+        QRect scissorRect;
+        int stencilValue;
+
+        bool stencilEnabled;
+        bool scissorEnabled;
+    };
+
+    QSGRenderNode();
+
+    virtual StateFlags changedStates() = 0;
+    virtual void render(const RenderState &state) = 0;
+
+    const QMatrix4x4 *matrix() const { return m_matrix; }
+    const QSGClipNode *clipList() const { return m_clip_list; }
+
+    void setInheritedOpacity(qreal opacity);
+    qreal inheritedOpacity() const { return m_opacity; }
+
+private:
+    friend class QSGNodeUpdater;
+
+    const QMatrix4x4 *m_matrix;
+    const QSGClipNode *m_clip_list;
+    qreal m_opacity;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QSGRenderNode::StateFlags)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif