1 files changed, 165 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowsglcontext.h b/src/plugins/platforms/windows/qwindowsglcontext.h
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+++ b/src/plugins/platforms/windows/qwindowsglcontext.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+** This file is part of the plugins 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 QWINDOWSGLCONTEXT_H
+#define QWINDOWSGLCONTEXT_H
+
+#include "array.h"
+#include "qtwindows_additional.h"
+
+#include <QtGui/QPlatformGLContext>
+#include <QtGui/QGuiGLContext>
+#include <QtCore/QSharedPointer>
+
+QT_BEGIN_NAMESPACE
+
+class QDebug;
+
+enum QWindowsGLFormatFlags
+{
+    QWindowsGLDirectRendering = 0x1,
+    QWindowsGLOverlay = 0x2,
+    QWindowsGLRenderToPixmap = 0x4,
+    QWindowsGLAccumBuffer = 0x8,
+    QWindowsGLDeprecatedFunctions = 0x10
+};
+
+// Additional format information for Windows.
+struct QWindowsOpenGLAdditionalFormat
+{
+    QWindowsOpenGLAdditionalFormat(unsigned formatFlagsIn = 0, unsigned pixmapDepthIn = 0) :
+        formatFlags(formatFlagsIn), pixmapDepth(pixmapDepthIn) {}
+    unsigned formatFlags; // QWindowsGLFormatFlags.
+    unsigned pixmapDepth; // for QWindowsGLRenderToPixmap
+};
+
+// Per-window data for active OpenGL contexts.
+struct QOpenGLContextData
+{
+    QOpenGLContextData(HGLRC r, HWND h, HDC d) : renderingContext(r), hwnd(h), hdc(d) {}
+    QOpenGLContextData() : renderingContext(0), hwnd(0), hdc(0) {}
+
+    HGLRC renderingContext;
+    HWND hwnd;
+    HDC hdc;
+};
+
+class QOpenGLStaticContext
+{
+    Q_DISABLE_COPY(QOpenGLStaticContext)
+    QOpenGLStaticContext();
+public:
+    enum Extensions
+    {
+        SampleBuffers = 0x1
+    };
+
+    typedef bool
+        (APIENTRY *WglGetPixelFormatAttribIVARB)
+            (HDC hdc, int iPixelFormat, int iLayerPlane,
+             uint nAttributes, const int *piAttributes, int *piValues);
+
+    typedef bool
+        (APIENTRY *WglChoosePixelFormatARB)(HDC hdc, const int *piAttribList,
+            const float *pfAttribFList, uint nMaxFormats, int *piFormats,
+            UINT *nNumFormats);
+
+    typedef HGLRC
+        (APIENTRY *WglCreateContextAttribsARB)(HDC, HGLRC, const int *);
+
+    bool hasExtensions() const
+        { return wglGetPixelFormatAttribIVARB && wglChoosePixelFormatARB && wglCreateContextAttribsARB; }
+
+    static QOpenGLStaticContext *create();
+    static QByteArray getGlString(unsigned int which);
+
+    const QByteArray vendor;
+    const QByteArray renderer;
+    const QByteArray extensionNames;
+    int majorVersion;
+    int minorVersion;
+    unsigned extensions;
+
+    WglGetPixelFormatAttribIVARB wglGetPixelFormatAttribIVARB;
+    WglChoosePixelFormatARB wglChoosePixelFormatARB;
+    WglCreateContextAttribsARB wglCreateContextAttribsARB;
+};
+
+QDebug operator<<(QDebug d, const QOpenGLStaticContext &);
+
+class QWindowsGLContext : public QPlatformGLContext
+{
+public:
+    typedef QSharedPointer<QOpenGLStaticContext> QOpenGLStaticContextPtr;
+
+    explicit QWindowsGLContext(const QOpenGLStaticContextPtr &staticContext,
+                               QGuiGLContext *context);
+    virtual ~QWindowsGLContext();
+    bool isValid() const                  { return m_renderingContext; }
+    virtual QSurfaceFormat format() const { return m_obtainedFormat; }
+
+    virtual void swapBuffers(QPlatformSurface *surface);
+
+    virtual bool makeCurrent(QPlatformSurface *surface);
+    virtual void doneCurrent();
+
+    typedef void (*GL_Proc) ();
+
+    virtual GL_Proc getProcAddress(const QByteArray &procName);
+
+    HGLRC renderingContext() const        { return m_renderingContext; }
+
+private:
+    inline void releaseDCs();
+
+    const QOpenGLStaticContextPtr m_staticContext;
+    QGuiGLContext *m_context;
+    QSurfaceFormat m_obtainedFormat;
+    HGLRC m_renderingContext;
+    Array<QOpenGLContextData> m_windowContexts;
+    PIXELFORMATDESCRIPTOR m_obtainedPixelFormatDescriptor;
+    int m_pixelFormat;
+    bool m_extensionsUsed;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSGLCONTEXT_H