/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtOpenGL module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QGLPIXELBUFFER_P_H+
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#define QGLPIXELBUFFER_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists for the convenience+
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// of the QLibrary class.  This header file may change from+
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// version to version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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QT_BEGIN_NAMESPACE+
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+
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QT_BEGIN_INCLUDE_NAMESPACE+
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#include "QtOpenGL/qglpixelbuffer.h"+
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#include <private/qgl_p.h>+
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#include <private/qglpaintdevice_p.h>+
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+
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#if defined(Q_WS_X11) && !defined(QT_OPENGL_ES)+
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#include <GL/glx.h>+
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+
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// The below is needed to for compilation on HPUX, due to broken GLX+
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// headers. Some of the systems define GLX_VERSION_1_3 without+
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// defining the GLXFBConfig structure, which is wrong.+
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#if defined (Q_OS_HPUX) && defined(QT_DEFINE_GLXFBCONFIG_STRUCT)+
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typedef unsigned long GLXPbuffer;+
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+
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struct GLXFBConfig {+
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    int visualType;+
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    int transparentType;+
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                                /*    colors are floats scaled to ints */+
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    int transparentRed, transparentGreen, transparentBlue, transparentAlpha;+
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    int transparentIndex;+
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+
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    int visualCaveat;+
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+
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    int associatedVisualId;+
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    int screen;+
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+
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    int drawableType;+
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    int renderType;+
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+
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    int maxPbufferWidth, maxPbufferHeight, maxPbufferPixels;+
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    int optimalPbufferWidth, optimalPbufferHeight;  /* for SGIX_pbuffer */+
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+
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    int visualSelectGroup;	/* visuals grouped by select priority */+
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+
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    unsigned int id;+
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+
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    GLboolean rgbMode;+
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    GLboolean colorIndexMode;+
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    GLboolean doubleBufferMode;+
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    GLboolean stereoMode;+
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    GLboolean haveAccumBuffer;+
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    GLboolean haveDepthBuffer;+
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    GLboolean haveStencilBuffer;+
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+
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    /* The number of bits present in various buffers */+
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    GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;+
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    GLint depthBits;+
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    GLint stencilBits;+
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    GLint indexBits;+
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    GLint redBits, greenBits, blueBits, alphaBits;+
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    GLuint redMask, greenMask, blueMask, alphaMask;+
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+
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    GLuint multiSampleSize;     /* Number of samples per pixel (0 if no ms) */+
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+
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    GLuint nMultiSampleBuffers; /* Number of available ms buffers */+
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    GLint maxAuxBuffers;+
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+
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    /* frame buffer level */+
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    GLint level;+
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+
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    /* color ranges (for SGI_color_range) */+
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    GLboolean extendedRange;+
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    GLdouble minRed, maxRed;+
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    GLdouble minGreen, maxGreen;+
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    GLdouble minBlue, maxBlue;+
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    GLdouble minAlpha, maxAlpha;+
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};+
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+
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#endif // Q_OS_HPUX+
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+
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#elif defined(Q_WS_WIN)+
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DECLARE_HANDLE(HPBUFFERARB);+
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#elif defined(QT_OPENGL_ES_2)+
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#include <EGL/egl.h>+
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#elif defined(QT_OPENGL_ES)+
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#include <GLES/egl.h>+
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#endif+
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QT_END_INCLUDE_NAMESPACE+
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+
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class QEglContext;+
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+
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+
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class QGLPBufferGLPaintDevice : public QGLPaintDevice+
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{+
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public:+
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    virtual QPaintEngine* paintEngine() const {return pbuf->paintEngine();}+
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    virtual QSize size() const {return pbuf->size();}+
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    virtual QGLContext* context() const;+
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    virtual void endPaint();+
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    void setPBuffer(QGLPixelBuffer* pb);+
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private:+
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    QGLPixelBuffer* pbuf;+
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};+
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+
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class QGLPixelBufferPrivate {+
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    Q_DECLARE_PUBLIC(QGLPixelBuffer)+
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public:+
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    QGLPixelBufferPrivate(QGLPixelBuffer *q) : q_ptr(q), invalid(true), qctx(0), pbuf(0), ctx(0)+
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    {+
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#ifdef Q_WS_WIN+
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        dc = 0;+
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#elif defined(Q_WS_MACX)+
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        share_ctx = 0;+
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#endif+
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    }+
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    bool init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget);+
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    void common_init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget);+
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    bool cleanup();+
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+
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    QGLPixelBuffer *q_ptr;+
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    bool invalid;+
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    QGLContext *qctx;+
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    QGLPBufferGLPaintDevice glDevice;+
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    QGLFormat format;+
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+
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    QGLFormat req_format;+
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    QPointer<QGLWidget> req_shareWidget;+
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    QSize req_size;+
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+
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#if defined(Q_WS_X11) && !defined(QT_OPENGL_ES)+
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    GLXPbuffer pbuf;+
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    GLXContext ctx;+
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#elif defined(Q_WS_WIN)+
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    HDC dc;+
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    bool has_render_texture :1;+
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#if !defined(QT_OPENGL_ES)+
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    HPBUFFERARB pbuf;+
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    HGLRC ctx;+
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#endif+
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#elif defined(Q_WS_MACX)+
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#  ifdef QT_MAC_USE_COCOA+
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    void *pbuf;+
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    void *ctx;+
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    void *share_ctx;+
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#  else+
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    AGLPbuffer pbuf;+
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    AGLContext ctx;+
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    AGLContext share_ctx;+
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#  endif+
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#endif+
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#if defined(QT_OPENGL_ES)+
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    EGLSurface pbuf;+
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    QEglContext *ctx;+
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    int textureFormat;+
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#endif+
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};+
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+
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QT_END_NAMESPACE+
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+
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#endif // QGLPIXELBUFFER_P_H+
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