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/***************************************************************************
**
** Copyright (C) 2013 - 2014 BlackBerry Limited. All rights reserved.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.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_platformOpenGLContext(0),
m_newSurfaceRequested(true),
m_eglSurface(EGL_NO_SURFACE)
{
initWindow();
// Set window usage
const int val = SCREEN_USAGE_OPENGL_ES2;
const int result = screen_set_window_property_iv(nativeHandle(), SCREEN_PROPERTY_USAGE, &val);
if (Q_UNLIKELY(result != 0))
qFatal("QQnxEglWindow: failed to set window alpha usage, errno=%d", errno);
m_requestedBufferSize = shouldMakeFullScreen() ? screen()->geometry().size() : window->geometry().size();
}
QQnxEglWindow::~QQnxEglWindow()
{
// Cleanup EGL surface if it exists
destroyEGLSurface();
}
void QQnxEglWindow::createEGLSurface()
{
if (!m_requestedBufferSize.isValid()) {
qWarning("QQNX: Trying to create 0 size EGL surface. "
"Please set a valid window size before calling QOpenGLContext::makeCurrent()");
return;
}
// update the window's buffers before we create the EGL surface
setBufferSize(m_requestedBufferSize);
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) {
const EGLenum error = QQnxGLContext::checkEGLError("eglCreateWindowSurface");
qWarning("QQNX: failed to create EGL surface, err=%d", error);
}
}
void QQnxEglWindow::destroyEGLSurface()
{
// Destroy EGL surface if it exists
if (m_eglSurface != EGL_NO_SURFACE) {
EGLBoolean eglResult = eglDestroySurface(platformOpenGLContext()->getEglDisplay(), m_eglSurface);
if (Q_UNLIKELY(eglResult != EGL_TRUE))
qFatal("QQNX: failed to destroy EGL surface, err=%d", eglGetError());
}
m_eglSurface = EGL_NO_SURFACE;
}
void QQnxEglWindow::swapEGLBuffers()
{
qEglWindowDebug();
// Set current rendering API
EGLBoolean eglResult = eglBindAPI(EGL_OPENGL_ES_API);
if (Q_UNLIKELY(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 (Q_UNLIKELY(eglResult != EGL_TRUE))
qFatal("QQNX: failed to swap EGL buffers, err=%d", eglGetError());
windowPosted();
}
EGLSurface QQnxEglWindow::getSurface()
{
if (m_newSurfaceRequested.testAndSetOrdered(true, false)) {
const QMutexLocker locker(&m_mutex); //Set geomety must not reset the requestedBufferSize till
//the surface is created
if (m_eglSurface != EGL_NO_SURFACE) {
platformOpenGLContext()->doneCurrent();
destroyEGLSurface();
}
createEGLSurface();
}
return m_eglSurface;
}
void QQnxEglWindow::setGeometry(const QRect &rect)
{
//If this is the root window, it has to be shown fullscreen
const QRect &newGeometry = shouldMakeFullScreen() ? screen()->geometry() : 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 = newGeometry.size();
if (m_platformOpenGLContext != 0 && bufferSize() != newGeometry.size())
m_newSurfaceRequested.testAndSetRelease(false, true);
}
QQnxWindow::setGeometry(newGeometry);
}
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 (Q_UNLIKELY(redSize == -1))
qFatal("QQnxWindow: red size not defined");
const int greenSize = format.greenBufferSize();
if (Q_UNLIKELY(greenSize == -1))
qFatal("QQnxWindow: green size not defined");
const int blueSize = format.blueBufferSize();
if (Q_UNLIKELY(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()
{
m_requestedBufferSize = QSize();
}
QT_END_NAMESPACE
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