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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui/qpaintdevice.h>
#include <QtGui/qpixmap.h>
#include <QtGui/qwidget.h>
#include <QtCore/qdebug.h>
#include "qegl_p.h"
#include <QtGui/qx11info_x11.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
QT_BEGIN_NAMESPACE
bool QEglContext::createSurface(QPaintDevice *device, const QEglProperties *properties)
{
// Create the native drawable for the paint device.
int devType = device->devType();
EGLNativePixmapType pixmapDrawable = 0;
EGLNativeWindowType windowDrawable = 0;
bool ok;
if (devType == QInternal::Pixmap) {
pixmapDrawable = (EGLNativePixmapType)(static_cast<QPixmap *>(device))->handle();
ok = (pixmapDrawable != 0);
} else if (devType == QInternal::Widget) {
windowDrawable = (EGLNativeWindowType)(static_cast<QWidget *>(device))->winId();
ok = (windowDrawable != 0);
} else {
ok = false;
}
if (!ok) {
qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
return false;
}
// Create the EGL surface to draw into, based on the native drawable.
const int *props;
if (properties)
props = properties->properties();
else
props = 0;
if (devType == QInternal::Widget)
surf = eglCreateWindowSurface(dpy, cfg, windowDrawable, props);
else
surf = eglCreatePixmapSurface(dpy, cfg, pixmapDrawable, props);
if (surf == EGL_NO_SURFACE) {
qWarning() << "QEglContext::createSurface(): Unable to create EGL surface:"
<< errorString(eglGetError());
return false;
}
return true;
}
EGLDisplay QEglContext::getDisplay(QPaintDevice *device)
{
Q_UNUSED(device);
Display *xdpy = QX11Info::display();
if (!xdpy) {
qWarning("QEglContext::getDisplay(): X11 display is not open");
return EGL_NO_DISPLAY;
}
return eglGetDisplay(EGLNativeDisplayType(xdpy));
}
static int countBits(unsigned long mask)
{
int count = 0;
while (mask != 0) {
if (mask & 1)
++count;
mask >>= 1;
}
return count;
}
// Set the pixel format parameters from the visual in "xinfo".
void QEglProperties::setVisualFormat(const QX11Info *xinfo)
{
if (!xinfo)
return;
Visual *visual = (Visual*)xinfo->visual();
if (!visual)
return;
if (visual->c_class != TrueColor && visual->c_class != DirectColor)
return;
setValue(EGL_RED_SIZE, countBits(visual->red_mask));
setValue(EGL_GREEN_SIZE, countBits(visual->green_mask));
setValue(EGL_BLUE_SIZE, countBits(visual->blue_mask));
EGLint alphaBits = 0;
#if !defined(QT_NO_XRENDER)
XRenderPictFormat *format;
format = XRenderFindVisualFormat(xinfo->display(), visual);
if (format && (format->type == PictTypeDirect) && format->direct.alphaMask) {
alphaBits = countBits(format->direct.alphaMask);
qDebug("QEglProperties::setVisualFormat() - visual's alphaMask is %d", alphaBits);
}
#endif
setValue(EGL_ALPHA_SIZE, alphaBits);
}
extern const QX11Info *qt_x11Info(const QPaintDevice *pd);
// Set pixel format and other properties based on a paint device.
void QEglProperties::setPaintDeviceFormat(QPaintDevice *dev)
{
if (!dev)
return;
if (dev->devType() == QInternal::Image)
setPixelFormat(static_cast<QImage *>(dev)->format());
else
setVisualFormat(qt_x11Info(dev));
}
QT_END_NAMESPACE
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