76359dab8e
Enabling vsync and double buffering improves the overall impression. Enabling by default helps to get the best "out of the box" If not desired, one can disable this behavior via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1 Change-Id: I21ce5366ea5829140d8103cf2dbd8c487d079db6 Reviewed-by: Donald Carr <sirspudd@gmail.com> Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the qmake spec of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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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, Digia gives you certain additional
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** rights. These rights are described in the Digia 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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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 "qeglfshooks.h"
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#include <EGL/eglvivante.h>
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#include <QDebug>
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QT_BEGIN_NAMESPACE
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class QEglFSImx6Hooks : public QEglFSHooks
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{
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public:
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QEglFSImx6Hooks();
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virtual QSize screenSize() const;
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virtual EGLNativeWindowType createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format);
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virtual void destroyNativeWindow(EGLNativeWindowType window);
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virtual EGLNativeDisplayType platformDisplay() const;
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private:
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QSize mScreenSize;
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EGLNativeDisplayType mNativeDisplay;
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};
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QEglFSImx6Hooks::QEglFSImx6Hooks()
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{
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int width, height;
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bool multiBufferNotEnabledYet = qEnvironmentVariableIsEmpty("FB_MULTI_BUFFER");
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bool multiBuffer = qEnvironmentVariableIsEmpty("QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER");
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if (multiBufferNotEnabledYet && multiBuffer) {
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qWarning() << "QEglFSImx6Hooks will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.\n"
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<< "If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1";
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qputenv("FB_MULTI_BUFFER", "2");
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}
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mNativeDisplay = fbGetDisplayByIndex(0);
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fbGetDisplayGeometry(mNativeDisplay, &width, &height);
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mScreenSize.setHeight(height);
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mScreenSize.setWidth(width);
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}
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QSize QEglFSImx6Hooks::screenSize() const
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{
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return mScreenSize;
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}
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EGLNativeDisplayType QEglFSImx6Hooks::platformDisplay() const
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{
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return mNativeDisplay;
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}
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EGLNativeWindowType QEglFSImx6Hooks::createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format)
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{
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Q_UNUSED(window)
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Q_UNUSED(format)
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EGLNativeWindowType eglWindow = fbCreateWindow(mNativeDisplay, 0, 0, size.width(), size.height());
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return eglWindow;
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}
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void QEglFSImx6Hooks::destroyNativeWindow(EGLNativeWindowType window)
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{
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fbDestroyWindow(window);
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}
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QEglFSImx6Hooks eglFSImx6Hooks;
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QEglFSHooks *platformHooks = &eglFSImx6Hooks;
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QT_END_NAMESPACE
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