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#include "qopenglfunctions_4_2_compatibility.h"
#include "qopenglcontext.h"

QT_BEGIN_NAMESPACE

/*!
    \class QOpenGLFunctions_4_2_Compatibility
    \inmodule QtGui
    \since 5.1
    \wrapper
    \brief The QOpenGLFunctions_4_2_Compatibility class provides all functions for OpenGL 4.2 compatibility profile.

    This class is a wrapper for functions from OpenGL 4.2 compatibility profile.
    See reference pages on \l {http://www.opengl.org/sdk/docs/}{opengl.org}
    for function documentation.

    \sa QAbstractOpenGLFunctions
*/

QOpenGLFunctions_4_2_Compatibility::QOpenGLFunctions_4_2_Compatibility()
 : QAbstractOpenGLFunctions()
 , d_1_0_Core(0)
 , d_1_1_Core(0)
 , d_1_2_Core(0)
 , d_1_3_Core(0)
 , d_1_4_Core(0)
 , d_1_5_Core(0)
 , d_2_0_Core(0)
 , d_2_1_Core(0)
 , d_3_0_Core(0)
 , d_3_1_Core(0)
 , d_3_2_Core(0)
 , d_3_3_Core(0)
 , d_4_0_Core(0)
 , d_4_1_Core(0)
 , d_4_2_Core(0)
 , d_1_0_Deprecated(0)
 , d_1_1_Deprecated(0)
 , d_1_2_Deprecated(0)
 , d_1_3_Deprecated(0)
 , d_1_4_Deprecated(0)
 , m_reserved_2_0_Deprecated(nullptr)
 , d_3_3_Deprecated(0)
{
}

QOpenGLFunctions_4_2_Compatibility::~QOpenGLFunctions_4_2_Compatibility()
{
    if (d_1_0_Core) {
        d_1_0_Core->refs.deref();
        Q_ASSERT(d_1_0_Core->refs.loadRelaxed());
    }
    if (d_1_1_Core) {
        d_1_1_Core->refs.deref();
        Q_ASSERT(d_1_1_Core->refs.loadRelaxed());
    }
    if (d_1_2_Core) {
        d_1_2_Core->refs.deref();
        Q_ASSERT(d_1_2_Core->refs.loadRelaxed());
    }
    if (d_1_3_Core) {
        d_1_3_Core->refs.deref();
        Q_ASSERT(d_1_3_Core->refs.loadRelaxed());
    }
    if (d_1_4_Core) {
        d_1_4_Core->refs.deref();
        Q_ASSERT(d_1_4_Core->refs.loadRelaxed());
    }
    if (d_1_5_Core) {
        d_1_5_Core->refs.deref();
        Q_ASSERT(d_1_5_Core->refs.loadRelaxed());
    }
    if (d_2_0_Core) {
        d_2_0_Core->refs.deref();
        Q_ASSERT(d_2_0_Core->refs.loadRelaxed());
    }
    if (d_2_1_Core) {
        d_2_1_Core->refs.deref();
        Q_ASSERT(d_2_1_Core->refs.loadRelaxed());
    }
    if (d_3_0_Core) {
        d_3_0_Core->refs.deref();
        Q_ASSERT(d_3_0_Core->refs.loadRelaxed());
    }
    if (d_3_1_Core) {
        d_3_1_Core->refs.deref();
        Q_ASSERT(d_3_1_Core->refs.loadRelaxed());
    }
    if (d_3_2_Core) {
        d_3_2_Core->refs.deref();
        Q_ASSERT(d_3_2_Core->refs.loadRelaxed());
    }
    if (d_3_3_Core) {
        d_3_3_Core->refs.deref();
        Q_ASSERT(d_3_3_Core->refs.loadRelaxed());
    }
    if (d_4_0_Core) {
        d_4_0_Core->refs.deref();
        Q_ASSERT(d_4_0_Core->refs.loadRelaxed());
    }
    if (d_4_1_Core) {
        d_4_1_Core->refs.deref();
        Q_ASSERT(d_4_1_Core->refs.loadRelaxed());
    }
    if (d_4_2_Core) {
        d_4_2_Core->refs.deref();
        Q_ASSERT(d_4_2_Core->refs.loadRelaxed());
    }
    if (d_1_0_Deprecated) {
        d_1_0_Deprecated->refs.deref();
        Q_ASSERT(d_1_0_Deprecated->refs.loadRelaxed());
    }
    if (d_1_1_Deprecated) {
        d_1_1_Deprecated->refs.deref();
        Q_ASSERT(d_1_1_Deprecated->refs.loadRelaxed());
    }
    if (d_1_2_Deprecated) {
        d_1_2_Deprecated->refs.deref();
        Q_ASSERT(d_1_2_Deprecated->refs.loadRelaxed());
    }
    if (d_1_3_Deprecated) {
        d_1_3_Deprecated->refs.deref();
        Q_ASSERT(d_1_3_Deprecated->refs.loadRelaxed());
    }
    if (d_1_4_Deprecated) {
        d_1_4_Deprecated->refs.deref();
        Q_ASSERT(d_1_4_Deprecated->refs.loadRelaxed());
    }
    if (d_3_3_Deprecated) {
        d_3_3_Deprecated->refs.deref();
        Q_ASSERT(d_3_3_Deprecated->refs.loadRelaxed());
    }
}

bool QOpenGLFunctions_4_2_Compatibility::initializeOpenGLFunctions()
{
    if ( isInitialized() )
        return true;

    QOpenGLContext* context = QOpenGLContext::currentContext();

    // If owned by a context object make sure it is current.
    // Also check that current context is capable of resolving all needed functions
    if (((owningContext() && owningContext() == context) || !owningContext())
        && QOpenGLFunctions_4_2_Compatibility::isContextCompatible(context))
    {
        // Associate with private implementation, creating if necessary
        // Function pointers in the backends are resolved at creation time
        QOpenGLVersionFunctionsBackend* d = 0;
        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_CoreBackend::versionStatus());
        d_1_0_Core = static_cast<QOpenGLFunctions_1_0_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_CoreBackend::versionStatus());
        d_1_1_Core = static_cast<QOpenGLFunctions_1_1_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_2_CoreBackend::versionStatus());
        d_1_2_Core = static_cast<QOpenGLFunctions_1_2_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_3_CoreBackend::versionStatus());
        d_1_3_Core = static_cast<QOpenGLFunctions_1_3_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_4_CoreBackend::versionStatus());
        d_1_4_Core = static_cast<QOpenGLFunctions_1_4_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_5_CoreBackend::versionStatus());
        d_1_5_Core = static_cast<QOpenGLFunctions_1_5_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_2_0_CoreBackend::versionStatus());
        d_2_0_Core = static_cast<QOpenGLFunctions_2_0_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_2_1_CoreBackend::versionStatus());
        d_2_1_Core = static_cast<QOpenGLFunctions_2_1_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_0_CoreBackend::versionStatus());
        d_3_0_Core = static_cast<QOpenGLFunctions_3_0_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_1_CoreBackend::versionStatus());
        d_3_1_Core = static_cast<QOpenGLFunctions_3_1_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_2_CoreBackend::versionStatus());
        d_3_2_Core = static_cast<QOpenGLFunctions_3_2_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_3_CoreBackend::versionStatus());
        d_3_3_Core = static_cast<QOpenGLFunctions_3_3_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_4_0_CoreBackend::versionStatus());
        d_4_0_Core = static_cast<QOpenGLFunctions_4_0_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_4_1_CoreBackend::versionStatus());
        d_4_1_Core = static_cast<QOpenGLFunctions_4_1_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_4_2_CoreBackend::versionStatus());
        d_4_2_Core = static_cast<QOpenGLFunctions_4_2_CoreBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus());
        d_1_0_Deprecated = static_cast<QOpenGLFunctions_1_0_DeprecatedBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus());
        d_1_1_Deprecated = static_cast<QOpenGLFunctions_1_1_DeprecatedBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_2_DeprecatedBackend::versionStatus());
        d_1_2_Deprecated = static_cast<QOpenGLFunctions_1_2_DeprecatedBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_3_DeprecatedBackend::versionStatus());
        d_1_3_Deprecated = static_cast<QOpenGLFunctions_1_3_DeprecatedBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_4_DeprecatedBackend::versionStatus());
        d_1_4_Deprecated = static_cast<QOpenGLFunctions_1_4_DeprecatedBackend*>(d);
        d->refs.ref();

        d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_3_DeprecatedBackend::versionStatus());
        d_3_3_Deprecated = static_cast<QOpenGLFunctions_3_3_DeprecatedBackend*>(d);
        d->refs.ref();

        QAbstractOpenGLFunctions::initializeOpenGLFunctions();
    }
    return isInitialized();
}

bool QOpenGLFunctions_4_2_Compatibility::isContextCompatible(QOpenGLContext *context)
{
    Q_ASSERT(context);
    QSurfaceFormat f = context->format();
    const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion());
    if (v < qMakePair(4, 2))
        return false;

    if (f.profile() == QSurfaceFormat::CoreProfile)
        return false;

    return true;
}

QOpenGLVersionProfile QOpenGLFunctions_4_2_Compatibility::versionProfile()
{
    QOpenGLVersionProfile v;
    v.setVersion(4, 2);
    v.setProfile(QSurfaceFormat::CompatibilityProfile);
    return v;
}

QT_END_NAMESPACE