Added QSGPainterNode abstraction to QSGAdaptationLayer

This allows the scenegraph backend to customize how QSGPainterNodes are
rendered.

Change-Id: I640dcf121d0be6bda615cf30591d502329fc89d0
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

1 files changed, 148 insertions, 0 deletions

diff --git a/src/quick/scenegraph/util/qsgdefaultpainternode_p.h b/src/quick/scenegraph/util/qsgdefaultpainternode_p.h
new file mode 100644
index 0000000000..a87aeb5b44
--- /dev/null
+++ b/src/quick/scenegraph/util/qsgdefaultpainternode_p.h
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSGDEFAULTPAINTERNODE_P_H
+#define QSGDEFAULTPAINTERNODE_P_H
+
+#include <private/qsgadaptationlayer_p.h>
+#include "qsgtexturematerial.h"
+#include "qsgtexture_p.h"
+
+#include <QtQuick/qquickpainteditem.h>
+
+#include <QtGui/qcolor.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLFramebufferObject;
+class QOpenGLPaintDevice;
+
+class Q_QUICK_PRIVATE_EXPORT QSGPainterTexture : public QSGPlainTexture
+{
+public:
+    QSGPainterTexture();
+
+    void setDirtyRect(const QRect &rect) { m_dirty_rect = rect; }
+
+    void bind();
+
+private:
+    QRect m_dirty_rect;
+};
+
+class Q_QUICK_PRIVATE_EXPORT QSGDefaultPainterNode : public QSGPainterNode
+{
+public:
+    QSGDefaultPainterNode(QQuickPaintedItem *item);
+    virtual ~QSGDefaultPainterNode();
+
+    void setPreferredRenderTarget(QQuickPaintedItem::RenderTarget target);
+
+    void setSize(const QSize &size);
+    QSize size() const { return m_size; }
+
+    void setDirty(const QRect &dirtyRect = QRect());
+
+    void setOpaquePainting(bool opaque);
+    bool opaquePainting() const { return m_opaquePainting; }
+
+    void setLinearFiltering(bool linearFiltering);
+    bool linearFiltering() const { return m_linear_filtering; }
+
+    void setMipmapping(bool mipmapping);
+    bool mipmapping() const { return m_mipmapping; }
+
+    void setSmoothPainting(bool s);
+    bool smoothPainting() const { return m_smoothPainting; }
+
+    void setFillColor(const QColor &c);
+    QColor fillColor() const { return m_fillColor; }
+
+    void setContentsScale(qreal s);
+    qreal contentsScale() const { return m_contentsScale; }
+
+    void setFastFBOResizing(bool dynamic);
+    bool fastFBOResizing() const { return m_fastFBOResizing; }
+
+    QImage toImage() const;
+    void update();
+
+    void paint();
+
+    QSGTexture *texture() const { return m_texture; }
+
+private:
+    void updateTexture();
+    void updateGeometry();
+    void updateRenderTarget();
+    void updateFBOSize();
+
+    QSGRenderContext *m_context;
+
+    QQuickPaintedItem::RenderTarget m_preferredRenderTarget;
+    QQuickPaintedItem::RenderTarget m_actualRenderTarget;
+
+    QQuickPaintedItem *m_item;
+
+    QOpenGLFramebufferObject *m_fbo;
+    QOpenGLFramebufferObject *m_multisampledFbo;
+    QImage m_image;
+
+    QSGOpaqueTextureMaterial m_material;
+    QSGTextureMaterial m_materialO;
+    QSGGeometry m_geometry;
+    QSGPainterTexture *m_texture;
+    QOpenGLPaintDevice *m_gl_device;
+
+    QSize m_size;
+    QSize m_fboSize;
+    bool m_dirtyContents;
+    QRect m_dirtyRect;
+    bool m_opaquePainting;
+    bool m_linear_filtering;
+    bool m_mipmapping;
+    bool m_smoothPainting;
+    bool m_extensionsChecked;
+    bool m_multisamplingSupported;
+    bool m_fastFBOResizing;
+    QColor m_fillColor;
+    qreal m_contentsScale;
+
+    bool m_dirtyGeometry;
+    bool m_dirtyRenderTarget;
+    bool m_dirtyTexture;
+};
+
+QT_END_NAMESPACE
+
+#endif // QSGDEFAULTPAINTERNODE_P_H