f3c37c839c
While we are at it, remove the Border and MirrorOnce wrap modes that have not been supported on OpenGL, because they are unsupported with Metal+iOS as well. Task-number: QTBUG-78580 Change-Id: I0db94b9d3a6125b3bb5d7b1db5d02a42cd94d2c2 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
367 lines
12 KiB
C++
367 lines
12 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2018 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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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 The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QGuiApplication>
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#include <QImage>
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#include <QFileInfo>
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#include <QFile>
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#include <QLoggingCategory>
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#include <QCommandLineParser>
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#include <QtGui/private/qshader_p.h>
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#include <QtGui/private/qrhinull_p.h>
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#ifndef QT_NO_OPENGL
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#include <QtGui/private/qrhigles2_p.h>
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#include <QOffscreenSurface>
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#endif
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#if QT_CONFIG(vulkan)
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#include <QLoggingCategory>
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#include <QtGui/private/qrhivulkan_p.h>
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#endif
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#ifdef Q_OS_WIN
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#include <QtGui/private/qrhid3d11_p.h>
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#endif
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#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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#include <QtGui/private/qrhimetal_p.h>
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#endif
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//#define TEST_FINISH
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static float vertexData[] = { // Y up (note m_proj), CCW
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0.0f, 0.5f, 1.0f, 0.0f, 0.0f,
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-0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
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0.5f, -0.5f, 0.0f, 0.0f, 1.0f,
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};
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static QShader getShader(const QString &name)
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{
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QFile f(name);
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if (f.open(QIODevice::ReadOnly))
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return QShader::fromSerialized(f.readAll());
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return QShader();
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}
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enum GraphicsApi
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{
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OpenGL,
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Vulkan,
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D3D11,
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Metal,
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Null
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};
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GraphicsApi graphicsApi;
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QString graphicsApiName()
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{
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switch (graphicsApi) {
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case OpenGL:
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return QLatin1String("OpenGL 2.x");
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case Vulkan:
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return QLatin1String("Vulkan");
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case D3D11:
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return QLatin1String("Direct3D 11");
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case Metal:
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return QLatin1String("Metal");
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case Null:
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return QLatin1String("Null");
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default:
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break;
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}
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return QString();
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}
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int main(int argc, char **argv)
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{
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QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QGuiApplication app(argc, argv);
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#if defined(Q_OS_WIN)
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graphicsApi = D3D11;
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#elif defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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graphicsApi = Metal;
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#elif QT_CONFIG(vulkan)
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graphicsApi = Vulkan;
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#else
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graphicsApi = OpenGL;
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#endif
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QCommandLineParser cmdLineParser;
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cmdLineParser.addHelpOption();
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QCommandLineOption glOption({ "g", "opengl" }, QLatin1String("OpenGL (2.x)"));
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cmdLineParser.addOption(glOption);
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QCommandLineOption vkOption({ "v", "vulkan" }, QLatin1String("Vulkan"));
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cmdLineParser.addOption(vkOption);
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QCommandLineOption d3dOption({ "d", "d3d11" }, QLatin1String("Direct3D 11"));
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cmdLineParser.addOption(d3dOption);
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QCommandLineOption mtlOption({ "m", "metal" }, QLatin1String("Metal"));
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cmdLineParser.addOption(mtlOption);
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QCommandLineOption nullOption({ "n", "null" }, QLatin1String("Null"));
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cmdLineParser.addOption(nullOption);
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cmdLineParser.process(app);
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if (cmdLineParser.isSet(glOption))
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graphicsApi = OpenGL;
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if (cmdLineParser.isSet(vkOption))
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graphicsApi = Vulkan;
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if (cmdLineParser.isSet(d3dOption))
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graphicsApi = D3D11;
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if (cmdLineParser.isSet(mtlOption))
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graphicsApi = Metal;
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if (cmdLineParser.isSet(nullOption))
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graphicsApi = Null;
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qDebug("Selected graphics API is %s", qPrintable(graphicsApiName()));
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qDebug("This is a multi-api example, use command line arguments to override:\n%s", qPrintable(cmdLineParser.helpText()));
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QRhi *r = nullptr;
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if (graphicsApi == Null) {
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QRhiNullInitParams params;
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r = QRhi::create(QRhi::Null, ¶ms);
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}
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#if QT_CONFIG(vulkan)
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QVulkanInstance inst;
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if (graphicsApi == Vulkan) {
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QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true"));
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#ifndef Q_OS_ANDROID
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inst.setLayers(QByteArrayList() << "VK_LAYER_LUNARG_standard_validation");
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#else
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inst.setLayers(QByteArrayList()
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<< "VK_LAYER_GOOGLE_threading"
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<< "VK_LAYER_LUNARG_parameter_validation"
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<< "VK_LAYER_LUNARG_object_tracker"
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<< "VK_LAYER_LUNARG_core_validation"
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<< "VK_LAYER_LUNARG_image"
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<< "VK_LAYER_LUNARG_swapchain"
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<< "VK_LAYER_GOOGLE_unique_objects");
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#endif
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if (inst.create()) {
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QRhiVulkanInitParams params;
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params.inst = &inst;
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r = QRhi::create(QRhi::Vulkan, ¶ms);
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} else {
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qWarning("Failed to create Vulkan instance, switching to OpenGL");
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graphicsApi = OpenGL;
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}
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}
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#endif
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#ifndef QT_NO_OPENGL
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QScopedPointer<QOffscreenSurface> offscreenSurface;
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if (graphicsApi == OpenGL) {
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offscreenSurface.reset(QRhiGles2InitParams::newFallbackSurface());
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QRhiGles2InitParams params;
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params.fallbackSurface = offscreenSurface.data();
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r = QRhi::create(QRhi::OpenGLES2, ¶ms);
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}
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#endif
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#ifdef Q_OS_WIN
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if (graphicsApi == D3D11) {
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QRhiD3D11InitParams params;
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params.enableDebugLayer = true;
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r = QRhi::create(QRhi::D3D11, ¶ms);
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}
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#endif
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#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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if (graphicsApi == Metal) {
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QRhiMetalInitParams params;
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r = QRhi::create(QRhi::Metal, ¶ms);
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}
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#endif
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if (!r)
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qFatal("Failed to initialize RHI");
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QRhiTexture *tex = r->newTexture(QRhiTexture::RGBA8, QSize(1280, 720), 1, QRhiTexture::RenderTarget | QRhiTexture::UsedAsTransferSource);
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tex->build();
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QRhiTextureRenderTarget *rt = r->newTextureRenderTarget({ tex });
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QRhiRenderPassDescriptor *rp = rt->newCompatibleRenderPassDescriptor();
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rt->setRenderPassDescriptor(rp);
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rt->build();
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QMatrix4x4 proj = r->clipSpaceCorrMatrix();
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proj.perspective(45.0f, 1280 / 720.f, 0.01f, 1000.0f);
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proj.translate(0, 0, -4);
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QRhiBuffer *vbuf = r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData));
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vbuf->build();
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QRhiBuffer *ubuf = r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68);
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ubuf->build();
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QRhiShaderResourceBindings *srb = r->newShaderResourceBindings();
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srb->setBindings({
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QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, ubuf)
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});
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srb->build();
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QRhiGraphicsPipeline *ps = r->newGraphicsPipeline();
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QRhiGraphicsPipeline::TargetBlend premulAlphaBlend;
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premulAlphaBlend.enable = true;
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ps->setTargetBlends({ premulAlphaBlend });
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const QShader vs = getShader(QLatin1String(":/color.vert.qsb"));
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if (!vs.isValid())
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qFatal("Failed to load shader pack (vertex)");
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const QShader fs = getShader(QLatin1String(":/color.frag.qsb"));
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if (!fs.isValid())
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qFatal("Failed to load shader pack (fragment)");
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ps->setShaderStages({
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{ QRhiShaderStage::Vertex, vs },
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{ QRhiShaderStage::Fragment, fs }
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});
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QRhiVertexInputLayout inputLayout;
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inputLayout.setBindings({
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{ 5 * sizeof(float) }
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});
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inputLayout.setAttributes({
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{ 0, 0, QRhiVertexInputAttribute::Float2, 0 },
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{ 0, 1, QRhiVertexInputAttribute::Float3, 2 * sizeof(float) }
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});
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ps->setVertexInputLayout(inputLayout);
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ps->setShaderResourceBindings(srb);
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ps->setRenderPassDescriptor(rp);
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ps->build();
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int frame = 0;
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for (; frame < 20; ++frame) {
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QRhiCommandBuffer *cb;
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if (r->beginOffscreenFrame(&cb) != QRhi::FrameOpSuccess)
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break;
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qDebug("Generating offscreen frame %d", frame);
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QRhiResourceUpdateBatch *u = r->nextResourceUpdateBatch();
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if (frame == 0)
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u->uploadStaticBuffer(vbuf, vertexData);
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static float rotation = 0.0f;
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QMatrix4x4 mvp = proj;
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mvp.rotate(rotation, 0, 1, 0);
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u->updateDynamicBuffer(ubuf, 0, 64, mvp.constData());
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rotation += 5.0f;
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static float opacity = 1.0f;
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static int opacityDir= 1;
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u->updateDynamicBuffer(ubuf, 64, 4, &opacity);
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opacity += opacityDir * 0.005f;
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if (opacity < 0.0f || opacity > 1.0f) {
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opacityDir *= -1;
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opacity = qBound(0.0f, opacity, 1.0f);
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}
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cb->beginPass(rt, QColor::fromRgbF(0.0f, 1.0f, 0.0f, 1.0f), { 1, 0 }, u);
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cb->setGraphicsPipeline(ps);
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cb->setViewport({ 0, 0, 1280, 720 });
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cb->setShaderResources();
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const QRhiCommandBuffer::VertexInput vbufBinding(vbuf, 0);
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cb->setVertexInput(0, 1, &vbufBinding);
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cb->draw(3);
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u = r->nextResourceUpdateBatch();
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QRhiReadbackDescription rb(tex);
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QRhiReadbackResult rbResult;
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rbResult.completed = [frame] { qDebug(" - readback %d completed", frame); };
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u->readBackTexture(rb, &rbResult);
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cb->endPass(u);
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qDebug("Submit and wait");
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#ifdef TEST_FINISH
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r->finish();
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#else
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r->endOffscreenFrame();
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#endif
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// The data should be ready either because endOffscreenFrame() waits
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// for completion or because finish() did.
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if (!rbResult.data.isEmpty()) {
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const uchar *p = reinterpret_cast<const uchar *>(rbResult.data.constData());
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QImage image(p, rbResult.pixelSize.width(), rbResult.pixelSize.height(), QImage::Format_RGBA8888);
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QString fn = QString::asprintf("frame%d.png", frame);
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fn = QFileInfo(fn).absoluteFilePath();
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qDebug("Saving into %s", qPrintable(fn));
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if (r->isYUpInFramebuffer())
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image.mirrored().save(fn);
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else
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image.save(fn);
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} else {
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qWarning("Readback failed!");
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}
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#ifdef TEST_FINISH
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r->endOffscreenFrame();
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#endif
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}
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delete ps;
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delete srb;
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delete ubuf;
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delete vbuf;
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delete rt;
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delete rp;
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delete tex;
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delete r;
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qDebug("\nRendered and read back %d frames using %s", frame, qPrintable(graphicsApiName()));
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return 0;
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}
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