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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QDebug>
#include <QLibrary>
#include <QGLFormat>
#include "qxlibwindow.h"
#include "qxlibscreen.h"
#include "qxlibdisplay.h"
#include "qxlibstatic.h"
#if !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
#include "qglxintegration.h"
#include "qglxconvenience.h"
#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
#include <dlfcn.h>
#endif
QT_BEGIN_NAMESPACE
QGLXContext::QGLXContext(Window window, QXlibScreen *screen, const QPlatformWindowFormat &format)
: QPlatformGLContext()
, m_screen(screen)
, m_drawable((Drawable)window)
, m_context(0)
{
const QPlatformGLContext *sharePlatformContext;
sharePlatformContext = format.sharedGLContext();
GLXContext shareGlxContext = 0;
if (sharePlatformContext)
shareGlxContext = static_cast<const QGLXContext*>(sharePlatformContext)->glxContext();
GLXFBConfig config = qglx_findConfig(screen->display()->nativeDisplay(),screen->xScreenNumber(),format);
m_context = glXCreateNewContext(screen->display()->nativeDisplay(),config,GLX_RGBA_TYPE,shareGlxContext,TRUE);
m_windowFormat = qglx_platformWindowFromGLXFBConfig(screen->display()->nativeDisplay(),config,m_context);
#ifdef MYX11_DEBUG
qDebug() << "QGLXGLContext::create context" << m_context;
#endif
}
QGLXContext::QGLXContext(QXlibScreen *screen, Drawable drawable, GLXContext context)
: QPlatformGLContext(), m_screen(screen), m_drawable(drawable), m_context(context)
{
}
QGLXContext::~QGLXContext()
{
if (m_context) {
qDebug("Destroying GLX context 0x%p", m_context);
glXDestroyContext(m_screen->display()->nativeDisplay(), m_context);
}
}
void QGLXContext::makeCurrent()
{
QPlatformGLContext::makeCurrent();
#ifdef MYX11_DEBUG
qDebug("QGLXGLContext::makeCurrent(window=0x%x, ctx=0x%x)", m_drawable, m_context);
#endif
glXMakeCurrent(m_screen->display()->nativeDisplay(), m_drawable, m_context);
}
void QGLXContext::doneCurrent()
{
QPlatformGLContext::doneCurrent();
glXMakeCurrent(m_screen->display()->nativeDisplay(), 0, 0);
}
void QGLXContext::swapBuffers()
{
glXSwapBuffers(m_screen->display()->nativeDisplay(), m_drawable);
}
void* QGLXContext::getProcAddress(const QString& procName)
{
typedef void *(*qt_glXGetProcAddressARB)(const GLubyte *);
static qt_glXGetProcAddressARB glXGetProcAddressARB = 0;
static bool resolved = false;
if (resolved && !glXGetProcAddressARB)
return 0;
if (!glXGetProcAddressARB) {
QList<QByteArray> glxExt = QByteArray(glXGetClientString(m_screen->display()->nativeDisplay(), GLX_EXTENSIONS)).split(' ');
if (glxExt.contains("GLX_ARB_get_proc_address")) {
#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
void *handle = dlopen(NULL, RTLD_LAZY);
if (handle) {
glXGetProcAddressARB = (qt_glXGetProcAddressARB) dlsym(handle, "glXGetProcAddressARB");
dlclose(handle);
}
if (!glXGetProcAddressARB)
#endif
{
extern const QString qt_gl_library_name();
// QLibrary lib(qt_gl_library_name());
QLibrary lib(QLatin1String("GL"));
glXGetProcAddressARB = (qt_glXGetProcAddressARB) lib.resolve("glXGetProcAddressARB");
}
}
resolved = true;
}
if (!glXGetProcAddressARB)
return 0;
return glXGetProcAddressARB(reinterpret_cast<const GLubyte *>(procName.toLatin1().data()));
}
QPlatformWindowFormat QGLXContext::platformWindowFormat() const
{
return m_windowFormat;
}
QT_END_NAMESPACE
#endif //!defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
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