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/****************************************************************************
**
** Copyright (C) 2014 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qkmsscreen.h"
#include "qkmsdevice.h"
#include "qkmscontext.h"
#include "qkmswindow.h"
#include <QOpenGLContext>
#include <QtPlatformSupport/private/qeglconvenience_p.h>
QT_BEGIN_NAMESPACE
QKmsContext::QKmsContext(QOpenGLContext *context, QKmsDevice *device)
: QPlatformOpenGLContext()
, m_device(device)
{
EGLDisplay display = m_device->eglDisplay();
EGLConfig config = q_configFromGLFormat(display, QKmsScreen::tweakFormat(context->format()), true);
m_format = q_glFormatFromConfig(display, config);
//Initialize EGLContext
static EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, context->format().majorVersion(),
EGL_NONE
};
eglBindAPI(EGL_OPENGL_ES_API);
m_eglContext = eglCreateContext(display, config, 0, contextAttribs);
if (m_eglContext == EGL_NO_CONTEXT) {
qWarning("QKmsContext::QKmsContext(): eglError: %x, this: %p",
eglGetError(), this);
m_eglContext = 0;
}
}
bool QKmsContext::isValid() const
{
return m_eglContext != EGL_NO_CONTEXT;
}
bool QKmsContext::makeCurrent(QPlatformSurface *surface)
{
Q_ASSERT(surface->surface()->surfaceType() == QSurface::OpenGLSurface);
EGLDisplay display = m_device->eglDisplay();
QPlatformWindow *window = static_cast<QPlatformWindow *>(surface);
QKmsScreen *screen = static_cast<QKmsScreen *> (QPlatformScreen::platformScreenForWindow(window->window()));
EGLSurface eglSurface = screen->eglSurface();
screen->waitForPageFlipComplete();
bool ok = eglMakeCurrent(display, eglSurface, eglSurface, m_eglContext);
if (!ok)
qWarning("QKmsContext::makeCurrent(): eglError: %x, this: %p",
eglGetError(), this);
return true;
}
void QKmsContext::doneCurrent()
{
bool ok = eglMakeCurrent(m_device->eglDisplay(), EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
if (!ok)
qWarning("QKmsContext::doneCurrent(): eglError: %x, this: %p",
eglGetError(), this);
}
void QKmsContext::swapBuffers(QPlatformSurface *surface)
{
//Cast context to a window surface and get the screen the context
//is on and call swapBuffers on that screen.
QPlatformWindow *window = static_cast<QPlatformWindow *>(surface);
QKmsScreen *screen = static_cast<QKmsScreen *> (QPlatformScreen::platformScreenForWindow(window->window()));
screen->swapBuffers();
}
void (*QKmsContext::getProcAddress(const QByteArray &procName)) ()
{
return eglGetProcAddress(procName.data());
}
EGLContext QKmsContext::eglContext() const
{
return m_eglContext;
}
QSurfaceFormat QKmsContext::format() const
{
return m_format;
}
QT_END_NAMESPACE
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