text: /****************************************************************************
  **
  ** 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.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** 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 QSGDEFAULTLAYER_P_H
  #define QSGDEFAULTLAYER_P_H
  
  #include <private/qsgadaptationlayer_p.h>
  #include <private/qsgcontext_p.h>
  #include <qsgsimplerectnode.h>
  
  #define QSG_DEBUG_FBO_OVERLAY
  
  class Q_QUICK_PRIVATE_EXPORT QSGDefaultLayer : public QSGLayer
  {
      Q_OBJECT
  public:
      QSGDefaultLayer(QSGRenderContext *context);
      ~QSGDefaultLayer();
  
      virtual bool updateTexture();
  
      // The item's "paint node", not effect node.
      QSGNode *item() const { return m_item; }
      void setItem(QSGNode *item);
  
      QRectF rect() const { return m_rect; }
      void setRect(const QRectF &rect);
  
      QSize size() const { return m_size; }
      void setSize(const QSize &size);
  
      void setHasMipmaps(bool mipmap);
  
      void bind();
  
      bool hasAlphaChannel() const;
      bool hasMipmaps() const;
      int textureId() const;
      QSize textureSize() const { return m_size; }
  
      GLenum format() const { return m_format; }
      void setFormat(GLenum format);
  
      bool live() const { return bool(m_live); }
      void setLive(bool live);
  
      bool recursive() const { return bool(m_recursive); }
      void setRecursive(bool recursive);
  
      void setDevicePixelRatio(qreal ratio) { m_device_pixel_ratio = ratio; }
  
      void scheduleUpdate();
  
      QImage toImage() const;
  
  public Q_SLOTS:
      void markDirtyTexture();
      void invalidated();
  
  private:
      void grab();
  
      QSGNode *m_item;
      QRectF m_rect;
      QSize m_size;
      qreal m_device_pixel_ratio;
      GLenum m_format;
  
      QSGRenderer *m_renderer;
      QOpenGLFramebufferObject *m_fbo;
      QOpenGLFramebufferObject *m_secondaryFbo;
      QSharedPointer<QSGDepthStencilBuffer> m_depthStencilBuffer;
  
      GLuint m_transparentTexture;
  
  #ifdef QSG_DEBUG_FBO_OVERLAY
      QSGSimpleRectNode *m_debugOverlay;
  #endif
  
      QSGRenderContext *m_context;
  
      uint m_mipmap : 1;
      uint m_live : 1;
      uint m_recursive : 1;
      uint m_dirtyTexture : 1;
      uint m_multisamplingChecked : 1;
      uint m_multisampling : 1;
      uint m_grab : 1;
  };
  
  #endif // QSGDEFAULTLAYER_P_H
  