diff options
| -rw-r--r-- | tests/manual/qopenglwindow/multiwindow/main.cpp | 177 | ||||
| -rw-r--r-- | tests/manual/qopenglwindow/multiwindow/multiwindow.pro | 4 |
2 files changed, 181 insertions, 0 deletions
diff --git a/tests/manual/qopenglwindow/multiwindow/main.cpp b/tests/manual/qopenglwindow/multiwindow/main.cpp new file mode 100644 index 0000000000..39b700b911 --- /dev/null +++ b/tests/manual/qopenglwindow/multiwindow/main.cpp @@ -0,0 +1,177 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the test suite 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QGuiApplication> +#include <QOpenGLWindow> +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QPainter> +#include <QElapsedTimer> + +// This application opens three windows and continuously schedules updates for +// them. Each of them is a separate QOpenGLWindow so there will be a separate +// context and swapBuffers call for each. +// +// By default the swap interval is 1 so the effect of three blocking swapBuffers +// on the main thread can be examined. (the result is likely to be different +// between platforms, for example OS X is buffer queuing meaning that it can +// block outside swap, resulting in perfect vsync for all three windows, while +// other systems that block on swap will kill the frame rate due to blocking the +// thread three times) +// +// Pass --novsync to set a swap interval of 0. This should give an unthrottled +// refresh on all platforms for all three windows. +// +// Passing --vsyncone sets swap interval to 1 for the first window and 0 to the +// others. +// +// Pass --extrawindows N to open N windows in addition to the default 3. +// +// For reference, below is a table of some test results. +// +// swap interval 1 for all swap interval 1 for only one and 0 for others +// -------------------------------------------------------------------------------------------------------------------- +// OS X (Intel HD) 60 FPS for all 60 FPS for all +// Windows Intel opengl32 20 FPS for all (each swap blocks) 60 FPS for all +// Windows ANGLE D3D9/D3D11 60 FPS for all 60 FPS for all +// Windows ANGLE D3D11 WARP 20 FPS for all 60 FPS for all +// Windows Mesa llvmpipe does not really vsync anyway + +class Window : public QOpenGLWindow +{ +public: + Window(int n) : idx(n) { + r = g = b = fps = 0; + y = 0; + resize(200, 200); + t2.start(); + } + + void paintGL() { + QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions(); + f->glClearColor(r, g, b, 1); + f->glClear(GL_COLOR_BUFFER_BIT); + switch (idx % 3) { + case 0: + r += 0.005f; + break; + case 1: + g += 0.005f; + break; + case 2: + b += 0.005f; + break; + } + if (r > 1) + r = 0; + if (g > 1) + g = 0; + if (b > 1) + b = 0; + + QPainter p(this); + p.setPen(Qt::white); + p.drawText(QPoint(20, y), QString(QLatin1String("Window %1 (%2 FPS)")).arg(idx).arg(fps)); + y += 1; + if (y > height() - 20) + y = 20; + + if (t2.elapsed() > 1000) { + fps = 1000.0 / t.elapsed(); + t2.restart(); + } + t.restart(); + + update(); + } + +private: + int idx; + GLfloat r, g, b, fps; + int y; + QElapsedTimer t, t2; +}; + +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + QSurfaceFormat fmt; + if (QGuiApplication::arguments().contains(QLatin1String("--novsync"))) { + qDebug("swap interval 0 (no throttling)"); + fmt.setSwapInterval(0); + } else { + qDebug("swap interval 1 (sync to vblank)"); + } + QSurfaceFormat::setDefaultFormat(fmt); + + Window w1(0); + if (QGuiApplication::arguments().contains(QLatin1String("--vsyncone"))) { + qDebug("swap interval 1 for first window only"); + QSurfaceFormat w1fmt = fmt; + w1fmt.setSwapInterval(1); + w1.setFormat(w1fmt); + fmt.setSwapInterval(0); + QSurfaceFormat::setDefaultFormat(fmt); + } + Window w2(1); + Window w3(2); + w1.setGeometry(QRect(QPoint(10, 100), w1.size())); + w2.setGeometry(QRect(QPoint(300, 100), w2.size())); + w3.setGeometry(QRect(QPoint(600, 100), w3.size())); + w1.show(); + w2.show(); + w3.show(); + + QList<QWindow *> extraWindows; + int countIdx; + if ((countIdx = QGuiApplication::arguments().indexOf(QLatin1String("--extrawindows"))) >= 0) { + int extraWindowCount = QGuiApplication::arguments().at(countIdx + 1).toInt(); + for (int i = 0; i < extraWindowCount; ++i) { + Window *w = new Window(3 + i); + extraWindows << w; + w->show(); + } + } + + int r = app.exec(); + qDeleteAll(extraWindows); + return r; +} diff --git a/tests/manual/qopenglwindow/multiwindow/multiwindow.pro b/tests/manual/qopenglwindow/multiwindow/multiwindow.pro new file mode 100644 index 0000000000..e7c108ecd1 --- /dev/null +++ b/tests/manual/qopenglwindow/multiwindow/multiwindow.pro @@ -0,0 +1,4 @@ +TEMPLATE = app +TARGET = multiwindow + +SOURCES += main.cpp |