319 lines
9.0 KiB
C++
319 lines
9.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtOpenGL module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qgl.h"
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#include "qgl_egl_p.h"
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#include "qglpixelbuffer.h"
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#include <qglscreen_qws.h>
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#include <qscreenproxy_qws.h>
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#include <private/qglwindowsurface_qws_p.h>
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#include <private/qbackingstore_p.h>
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#include <private/qfont_p.h>
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#include <private/qfontengine_p.h>
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#include <private/qgl_p.h>
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#include <private/qpaintengine_opengl_p.h>
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#include <qpixmap.h>
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#include <qtimer.h>
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#include <qapplication.h>
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#include <qstack.h>
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#include <qdesktopwidget.h>
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#include <qdebug.h>
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#include <qvarlengtharray.h>
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QT_BEGIN_NAMESPACE
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static QGLScreen *glScreenForDevice(QPaintDevice *device)
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{
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QScreen *screen = qt_screen;
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if (screen->classId() == QScreen::MultiClass) {
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int screenNumber;
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if (device && device->devType() == QInternal::Widget)
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screenNumber = qApp->desktop()->screenNumber(static_cast<QWidget *>(device));
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else
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screenNumber = 0;
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screen = screen->subScreens()[screenNumber];
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}
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while (screen->classId() == QScreen::ProxyClass ||
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screen->classId() == QScreen::TransformedClass) {
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screen = static_cast<QProxyScreen *>(screen)->screen();
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}
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if (screen->classId() == QScreen::GLClass)
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return static_cast<QGLScreen *>(screen);
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else
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return 0;
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}
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/*
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QGLTemporaryContext implementation
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*/
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class QGLTemporaryContextPrivate
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{
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public:
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QGLWidget *widget;
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};
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QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
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: d(new QGLTemporaryContextPrivate)
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{
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d->widget = new QGLWidget;
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d->widget->makeCurrent();
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}
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QGLTemporaryContext::~QGLTemporaryContext()
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{
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delete d->widget;
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}
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/*****************************************************************************
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QOpenGL debug facilities
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*****************************************************************************/
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//#define DEBUG_OPENGL_REGION_UPDATE
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bool QGLFormat::hasOpenGLOverlays()
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{
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QGLScreen *glScreen = glScreenForDevice(0);
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if (glScreen)
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return (glScreen->options() & QGLScreen::Overlays);
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else
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return false;
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}
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static EGLSurface qt_egl_create_surface
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(QEglContext *context, QPaintDevice *device,
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const QEglProperties *properties = 0)
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{
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// Get the screen surface functions, which are used to create native ids.
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QGLScreen *glScreen = glScreenForDevice(device);
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if (!glScreen)
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return EGL_NO_SURFACE;
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QGLScreenSurfaceFunctions *funcs = glScreen->surfaceFunctions();
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if (!funcs)
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return EGL_NO_SURFACE;
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// Create the native drawable for the paint device.
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int devType = device->devType();
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EGLNativePixmapType pixmapDrawable = 0;
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EGLNativeWindowType windowDrawable = 0;
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bool ok;
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if (devType == QInternal::Pixmap) {
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ok = funcs->createNativePixmap(static_cast<QPixmap *>(device), &pixmapDrawable);
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} else if (devType == QInternal::Image) {
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ok = funcs->createNativeImage(static_cast<QImage *>(device), &pixmapDrawable);
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} else {
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ok = funcs->createNativeWindow(static_cast<QWidget *>(device), &windowDrawable);
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}
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if (!ok) {
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qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
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return EGL_NO_SURFACE;
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}
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// Create the EGL surface to draw into, based on the native drawable.
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const int *props;
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if (properties)
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props = properties->properties();
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else
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props = 0;
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EGLSurface surf;
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if (devType == QInternal::Widget) {
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surf = eglCreateWindowSurface
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(context->display(), context->config(), windowDrawable, props);
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} else {
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surf = eglCreatePixmapSurface
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(context->display(), context->config(), pixmapDrawable, props);
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}
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if (surf == EGL_NO_SURFACE)
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qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
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return surf;
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}
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bool QGLContext::chooseContext(const QGLContext* shareContext)
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{
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Q_D(QGLContext);
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// Validate the device.
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if (!device())
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return false;
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int devType = device()->devType();
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if (devType != QInternal::Pixmap && devType != QInternal::Image && devType != QInternal::Widget) {
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qWarning("QGLContext::chooseContext(): Cannot create QGLContext's for paint device type %d", devType);
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return false;
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}
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// Get the display and initialize it.
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d->eglContext = new QEglContext();
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d->ownsEglContext = true;
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d->eglContext->setApi(QEgl::OpenGL);
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// Construct the configuration we need for this surface.
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QEglProperties configProps;
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qt_eglproperties_set_glformat(configProps, d->glFormat);
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configProps.setDeviceType(devType);
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configProps.setPaintDeviceFormat(device());
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configProps.setRenderableType(QEgl::OpenGL);
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// Search for a matching configuration, reducing the complexity
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// each time until we get something that matches.
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if (!d->eglContext->chooseConfig(configProps)) {
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delete d->eglContext;
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d->eglContext = 0;
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return false;
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}
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// Inform the higher layers about the actual format properties.
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qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
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// Create a new context for the configuration.
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if (!d->eglContext->createContext
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(shareContext ? shareContext->d_func()->eglContext : 0)) {
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delete d->eglContext;
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d->eglContext = 0;
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return false;
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}
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d->sharing = d->eglContext->isSharing();
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if (d->sharing && shareContext)
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const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
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#if defined(EGL_VERSION_1_1)
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if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
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eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
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#endif
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// Create the EGL surface to draw into. We cannot use
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// QEglContext::createSurface() because it does not have
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// access to the QGLScreen.
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d->eglSurface = qt_egl_create_surface(d->eglContext, device());
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if (d->eglSurface == EGL_NO_SURFACE) {
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delete d->eglContext;
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d->eglContext = 0;
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return false;
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}
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return true;
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}
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bool QGLWidget::event(QEvent *e)
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{
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return QWidget::event(e);
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}
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void QGLWidget::resizeEvent(QResizeEvent *)
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{
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Q_D(QGLWidget);
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if (!isValid())
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return;
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makeCurrent();
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if (!d->glcx->initialized())
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glInit();
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resizeGL(width(), height());
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//handle overlay
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}
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const QGLContext* QGLWidget::overlayContext() const
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{
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return 0;
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}
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void QGLWidget::makeOverlayCurrent()
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{
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//handle overlay
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}
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void QGLWidget::updateOverlayGL()
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{
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//handle overlay
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}
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void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
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{
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Q_D(QGLWidget);
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if(context == 0) {
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qWarning("QGLWidget::setContext: Cannot set null context");
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return;
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}
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if(d->glcx)
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d->glcx->doneCurrent();
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QGLContext* oldcx = d->glcx;
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d->glcx = context;
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if(!d->glcx->isValid())
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d->glcx->create(shareContext ? shareContext : oldcx);
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if(deleteOldContext)
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delete oldcx;
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}
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void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
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{
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Q_Q(QGLWidget);
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QGLScreen *glScreen = glScreenForDevice(q);
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if (glScreen) {
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wsurf = static_cast<QWSGLWindowSurface*>(glScreen->createSurface(q));
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q->setWindowSurface(wsurf);
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}
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initContext(context, shareWidget);
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if(q->isValid() && glcx->format().hasOverlay()) {
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//no overlay
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qWarning("QtOpenGL ES doesn't currently support overlays");
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}
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}
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void QGLWidgetPrivate::cleanupColormaps()
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{
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}
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const QGLColormap & QGLWidget::colormap() const
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{
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return d_func()->cmap;
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}
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void QGLWidget::setColormap(const QGLColormap &)
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{
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}
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QT_END_NAMESPACE
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