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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 "qcocoaglcontext.h"
#include "qcocoawindow.h"
#include "qcocoaautoreleasepool.h"
#include <qdebug.h>
#include <QtCore/private/qcore_mac_p.h>
#include <QtPlatformSupport/private/cglconvenience_p.h>
#import <Cocoa/Cocoa.h>
QCocoaGLContext::QCocoaGLContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share)
: m_context(nil),
m_shareContext(nil),
m_format(format)
{
// we only support OpenGL contexts under Cocoa
if (m_format.renderableType() == QSurfaceFormat::DefaultRenderableType)
m_format.setRenderableType(QSurfaceFormat::OpenGL);
if (m_format.renderableType() != QSurfaceFormat::OpenGL)
return;
QCocoaAutoReleasePool pool; // For the SG Canvas render thread
NSOpenGLPixelFormat *pixelFormat = static_cast <NSOpenGLPixelFormat *>(qcgl_createNSOpenGLPixelFormat(m_format));
m_shareContext = share ? static_cast<QCocoaGLContext *>(share)->nsOpenGLContext() : nil;
m_context = [NSOpenGLContext alloc];
[m_context initWithFormat:pixelFormat shareContext:m_shareContext];
if (!m_context && m_shareContext) {
// try without shared context
m_shareContext = nil;
[m_context initWithFormat:pixelFormat shareContext:nil];
}
[pixelFormat release];
const GLint interval = 1;
[m_context setValues:&interval forParameter:NSOpenGLCPSwapInterval];
if (format.alphaBufferSize() > 0) {
int zeroOpacity = 0;
[m_context setValues:&zeroOpacity forParameter:NSOpenGLCPSurfaceOpacity];
}
}
QCocoaGLContext::~QCocoaGLContext()
{
[m_context release];
}
// Match up with createNSOpenGLPixelFormat!
QSurfaceFormat QCocoaGLContext::format() const
{
return m_format;
}
void QCocoaGLContext::swapBuffers(QPlatformSurface *surface)
{
QWindow *window = static_cast<QCocoaWindow *>(surface)->window();
setActiveWindow(window);
[m_context flushBuffer];
}
bool QCocoaGLContext::makeCurrent(QPlatformSurface *surface)
{
Q_ASSERT(surface->surface()->surfaceType() == QSurface::OpenGLSurface);
QCocoaAutoReleasePool pool;
QWindow *window = static_cast<QCocoaWindow *>(surface)->window();
setActiveWindow(window);
[m_context makeCurrentContext];
update();
return true;
}
void QCocoaGLContext::setActiveWindow(QWindow *window)
{
if (window == m_currentWindow.data())
return;
if (m_currentWindow && m_currentWindow.data()->handle())
static_cast<QCocoaWindow *>(m_currentWindow.data()->handle())->setCurrentContext(0);
Q_ASSERT(window->handle());
m_currentWindow = window;
QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(window->handle());
cocoaWindow->setCurrentContext(this);
[(QNSView *) cocoaWindow->contentView() setQCocoaGLContext:this];
}
void QCocoaGLContext::doneCurrent()
{
if (m_currentWindow && m_currentWindow.data()->handle())
static_cast<QCocoaWindow *>(m_currentWindow.data()->handle())->setCurrentContext(0);
m_currentWindow.clear();
[NSOpenGLContext clearCurrentContext];
}
void (*QCocoaGLContext::getProcAddress(const QByteArray &procName))()
{
return qcgl_getProcAddress(procName);
}
void QCocoaGLContext::update()
{
[m_context update];
}
NSOpenGLPixelFormat *QCocoaGLContext::createNSOpenGLPixelFormat(const QSurfaceFormat &format)
{
return static_cast<NSOpenGLPixelFormat *>(qcgl_createNSOpenGLPixelFormat(format));
}
NSOpenGLContext *QCocoaGLContext::nsOpenGLContext() const
{
return m_context;
}
bool QCocoaGLContext::isValid() const
{
return m_context != nil;
}
bool QCocoaGLContext::isSharing() const
{
return m_shareContext != nil;
}
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