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/***************************************************************************
**
** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
** 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 "qqnxeglwindow.h"
#include "qqnxscreen.h"
#include "qqnxglcontext.h"
#include <QDebug>
#include <errno.h>
#if defined(QQNXEGLWINDOW_DEBUG)
#define qEglWindowDebug qDebug
#else
#define qEglWindowDebug QT_NO_QDEBUG_MACRO
#endif
QT_BEGIN_NAMESPACE
QQnxEglWindow::QQnxEglWindow(QWindow *window, screen_context_t context, bool needRootWindow) :
QQnxWindow(window, context, needRootWindow),
m_requestedBufferSize(window->geometry().size()),
m_platformOpenGLContext(0),
m_newSurfaceRequested(true),
m_eglSurface(EGL_NO_SURFACE)
{
initWindow();
}
QQnxEglWindow::~QQnxEglWindow()
{
// Cleanup EGL surface if it exists
destroyEGLSurface();
}
void QQnxEglWindow::createEGLSurface()
{
// Fetch the surface size from the window and update
// the window's buffers before we create the EGL surface
const QSize surfaceSize = requestedBufferSize();
if (!surfaceSize.isValid()) {
qFatal("QQNX: Trying to create 0 size EGL surface. "
"Please set a valid window size before calling QOpenGLContext::makeCurrent()");
}
setBufferSize(surfaceSize);
const EGLint eglSurfaceAttrs[] =
{
EGL_RENDER_BUFFER, EGL_BACK_BUFFER,
EGL_NONE
};
qEglWindowDebug() << "Creating EGL surface" << platformOpenGLContext()->getEglDisplay()
<< platformOpenGLContext()->getEglConfig();
// Create EGL surface
m_eglSurface = eglCreateWindowSurface(platformOpenGLContext()->getEglDisplay()
, platformOpenGLContext()->getEglConfig(),
(EGLNativeWindowType) nativeHandle(), eglSurfaceAttrs);
if (m_eglSurface == EGL_NO_SURFACE) {
QQnxGLContext::checkEGLError("eglCreateWindowSurface");
qFatal("QQNX: failed to create EGL surface, err=%d", eglGetError());
}
}
void QQnxEglWindow::destroyEGLSurface()
{
// Destroy EGL surface if it exists
if (m_eglSurface != EGL_NO_SURFACE) {
EGLBoolean eglResult = eglDestroySurface(platformOpenGLContext()->getEglDisplay(), m_eglSurface);
if (eglResult != EGL_TRUE)
qFatal("QQNX: failed to destroy EGL surface, err=%d", eglGetError());
}
m_eglSurface = EGL_NO_SURFACE;
}
void QQnxEglWindow::swapEGLBuffers()
{
qEglWindowDebug() << Q_FUNC_INFO;
// Set current rendering API
EGLBoolean eglResult = eglBindAPI(EGL_OPENGL_ES_API);
if (eglResult != EGL_TRUE)
qFatal("QQNX: failed to set EGL API, err=%d", eglGetError());
// Post EGL surface to window
eglResult = eglSwapBuffers(m_platformOpenGLContext->getEglDisplay(), m_eglSurface);
if (eglResult != EGL_TRUE)
qFatal("QQNX: failed to swap EGL buffers, err=%d", eglGetError());
if (m_cover)
m_cover->updateCover();
}
EGLSurface QQnxEglWindow::getSurface()
{
if (m_newSurfaceRequested.testAndSetOrdered(true, false)) {
if (m_eglSurface != EGL_NO_SURFACE) {
platformOpenGLContext()->doneCurrent();
destroyEGLSurface();
}
createEGLSurface();
}
return m_eglSurface;
}
void QQnxEglWindow::setGeometry(const QRect &rect)
{
//We need to request that the GL context updates
// the EGLsurface on which it is rendering.
{
// We want the setting of the atomic bool in the GL context to be atomic with
// setting m_requestedBufferSize and therefore extended the scope to include
// that test.
const QMutexLocker locker(&m_mutex);
m_requestedBufferSize = rect.size();
if (m_platformOpenGLContext != 0 && bufferSize() != rect.size())
m_newSurfaceRequested.testAndSetRelease(false, true);
}
QQnxWindow::setGeometry(rect);
}
QSize QQnxEglWindow::requestedBufferSize() const
{
const QMutexLocker locker(&m_mutex);
return m_requestedBufferSize;
}
void QQnxEglWindow::adjustBufferSize()
{
const QSize windowSize = window()->size();
if (windowSize != bufferSize())
setBufferSize(windowSize);
}
void QQnxEglWindow::setPlatformOpenGLContext(QQnxGLContext *platformOpenGLContext)
{
// This function does not take ownership of the platform gl context.
// It is owned by the frontend QOpenGLContext
m_platformOpenGLContext = platformOpenGLContext;
}
int QQnxEglWindow::pixelFormat() const
{
if (!m_platformOpenGLContext) //The platform GL context was not set yet
return -1;
const QSurfaceFormat format = m_platformOpenGLContext->format();
// Extract size of color channels from window format
const int redSize = format.redBufferSize();
if (redSize == -1)
qFatal("QQnxWindow: red size not defined");
const int greenSize = format.greenBufferSize();
if (greenSize == -1)
qFatal("QQnxWindow: green size not defined");
const int blueSize = format.blueBufferSize();
if (blueSize == -1)
qFatal("QQnxWindow: blue size not defined");
// select matching native format
if (redSize == 5 && greenSize == 6 && blueSize == 5)
return SCREEN_FORMAT_RGB565;
else if (redSize == 8 && greenSize == 8 && blueSize == 8)
return SCREEN_FORMAT_RGBA8888;
qFatal("QQnxWindow: unsupported pixel format");
}
void QQnxEglWindow::resetBuffers()
{
const QMutexLocker locker(&m_mutex);
m_requestedBufferSize = QSize();
}
QT_END_NAMESPACE
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