diff options
author | Friedemann Kleint <Friedemann.Kleint@nokia.com> | 2012-05-23 15:07:06 +0200 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-05-31 09:13:01 +0200 |
commit | e7f1106edb1ac37d92d7851c44cd8d99f68eaaf4 (patch) | |
tree | b4d01b3ca52a0ff8a8ec0aa1803beeac78196508 /src/plugins/platforms/windows/qwindowseglcontext.cpp | |
parent | b63e101a90b677dcb192214aef35a107620c5f3c (diff) |
Windows: Add ANGLE support.
- Add QWindowsEGLContext usable for ANGLE and Windows CE.
- Add QWindowsEGLStaticContext containing the display
for resource cleanup.
- Add EGLSurface to QWindowsWindow.
- Add a -angle option specifying the path to the external
ANGLE installation to configure, add libraries to
the mkspecs.
Initial-patch-by: Jabot Corentin <corentinjabot@gmail.com>
Task-number: QTBUG-24207
Change-Id: I5f80b1efb6996da7c5d70aa3720f7801c9e4c6af
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
Diffstat (limited to 'src/plugins/platforms/windows/qwindowseglcontext.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowseglcontext.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowseglcontext.cpp b/src/plugins/platforms/windows/qwindowseglcontext.cpp new file mode 100644 index 0000000000..316c5b3113 --- /dev/null +++ b/src/plugins/platforms/windows/qwindowseglcontext.cpp @@ -0,0 +1,166 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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 1.1, 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwindowseglcontext.h" +#include "qwindowscontext.h" +#include "qwindowswindow.h" + +#include <QtCore/QDebug> +#include <QtGui/QOpenGLContext> + +#include <QtPlatformSupport/private/qeglconvenience_p.h> + +QT_BEGIN_NAMESPACE + +/*! + \class QWindowsEGLStaticContext + \brief Static data for QWindowsEGLContext. + + Keeps the display. The class is shared via + QSharedPointer in the windows, the contexts + and in QWindowsIntegration. The display will + be closed if the last instance is deleted. + + \internal + \ingroup qt-lighthouse-win +*/ + +QWindowsEGLStaticContext::QWindowsEGLStaticContext(EGLDisplay display, int version) + : m_display(display), m_version(version) +{ +} + +QWindowsEGLStaticContext *QWindowsEGLStaticContext::create() +{ + const HDC dc = QWindowsContext::instance()->displayContext(); + if (!dc){ + qWarning("%s: No Display", Q_FUNC_INFO); + return 0; + } + + EGLDisplay display = eglGetDisplay((EGLNativeDisplayType)dc); + if (!display) { + qWarning("%s: Could not obtain EGL display", Q_FUNC_INFO); + return 0; + } + + EGLint major; + EGLint minor; + if (!eglInitialize(display, &major, &minor)) { + qWarning("%s: Could not initialize egl display: error %d\n", + Q_FUNC_INFO, eglGetError()); + return 0; + } + if (QWindowsContext::verboseGL) + qDebug("%s: Created EGL display %p v%d.%d", + __FUNCTION__, display, major, minor); + return new QWindowsEGLStaticContext(display, (major << 8) | minor); +} + +QWindowsEGLStaticContext::~QWindowsEGLStaticContext() +{ + if (QWindowsContext::verboseGL) + qDebug("%s: Releasing EGL display %p", __FUNCTION__, m_display); + eglTerminate(m_display); +} + +/*! + \class QWindowsEGLContext + \brief Open EGL context. + + \section1 Using QWindowsEGLContext for Desktop with ANGLE + \section2 Build Instructions + \list + \o Install the Direct X SDK + \o Checkout and build ANGLE (SVN repository) as explained here: + \l{http://code.google.com/p/angleproject/wiki/DevSetup}{ANGLE-Project}. + When building for 64bit, de-activate the "WarnAsError" option + in every project file (as otherwise integer conversion + warnings will break the build). + \o Run configure.exe with the options "-opengl es2 -angle <path>". + \o Build qtbase and test some examples. + \endlist + + \internal + \ingroup qt-lighthouse-win +*/ + +QWindowsEGLContext::QWindowsEGLContext(const QWindowsEGLStaticContextPtr &staticContext, + const QSurfaceFormat &format, + QPlatformOpenGLContext *share) + : QEGLPlatformContext(format, share, staticContext->display(), EGL_OPENGL_ES_API) + , m_staticContext(staticContext) +{ +} + +QWindowsEGLContext::~QWindowsEGLContext() +{ +} + +bool QWindowsEGLContext::hasThreadedOpenGLCapability() +{ +#ifdef QT_OPENGL_ES_2_ANGLE + return false; +#else + return true; +#endif +} + +EGLSurface QWindowsEGLContext::eglSurfaceForPlatformSurface(QPlatformSurface *surface) +{ + const QWindowsWindow *window = static_cast<const QWindowsWindow *>(surface); + return window->eglSurfaceHandle(); +} + +bool QWindowsEGLContext::makeCurrent(QPlatformSurface *surface) +{ + bool ok = false; + QWindowsWindow *window = static_cast<QWindowsWindow *>(surface); + if (EGLSurface eglSurface = window->ensureEglSurfaceHandle(m_staticContext, eglConfig())) { + ok = eglMakeCurrent(eglDisplay(), eglSurface, eglSurface, eglContext()); + if (!ok) + qWarning("%s: eglMakeCurrent() failed, eglError: 0x%x, this: %p \n", + Q_FUNC_INFO, eglGetError(), this); + } + return ok; +} + +QT_END_NAMESPACE |