<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>hellovulkanwidget.cpp Example File | Qt GUI 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtgui-index.html">Qt GUI</a></td><td ><a href="qtgui-hellovulkanwidget-example.html">Hello Vulkan Widget Example</a></td><td >hellovulkanwidget.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtgui-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">hellovulkanwidget.cpp Example File</h1> <span class="subtitle">hellovulkanwidget/hellovulkanwidget.cpp</span> <!-- $$$hellovulkanwidget/hellovulkanwidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "hellovulkanwidget.h"</span> <span class="preprocessor">#include <QVulkanFunctions></span> <span class="preprocessor">#include <QApplication></span> <span class="preprocessor">#include <QVBoxLayout></span> <span class="preprocessor">#include <QPlainTextEdit></span> <span class="preprocessor">#include <QPushButton></span> <span class="preprocessor">#include <QLCDNumber></span> <span class="preprocessor">#include <QFileDialog></span> <span class="preprocessor">#include <QMessageBox></span> <span class="preprocessor">#include <QTabWidget></span> MainWindow<span class="operator">::</span>MainWindow(VulkanWindow <span class="operator">*</span>w<span class="operator">,</span> <span class="type"><a href="../qtwidgets/qplaintextedit.html">QPlainTextEdit</a></span> <span class="operator">*</span>logWidget) : m_window(w) { <span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span> <span class="operator">*</span>wrapper <span class="operator">=</span> <span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span><span class="operator">::</span>createWindowContainer(w); m_info <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qplaintextedit.html">QPlainTextEdit</a></span>; m_info<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); m_number <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qlcdnumber.html">QLCDNumber</a></span>(<span class="number">3</span>); m_number<span class="operator">-</span><span class="operator">></span>setSegmentStyle(<span class="type"><a href="../qtwidgets/qlcdnumber.html">QLCDNumber</a></span><span class="operator">::</span>Filled); <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>grabButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Grab"</span>)); grabButton<span class="operator">-</span><span class="operator">></span>setFocusPolicy(<span class="type"><a href="qt-sub-qtgui.html">Qt</a></span><span class="operator">::</span>NoFocus); connect(grabButton<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>onGrabRequested); <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>quitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Quit"</span>)); quitButton<span class="operator">-</span><span class="operator">></span>setFocusPolicy(<span class="type"><a href="qt-sub-qtgui.html">Qt</a></span><span class="operator">::</span>NoFocus); connect(quitButton<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span><span class="operator">::</span>clicked<span class="operator">,</span> <a href="../qtwidgets/qapplication.html#qApp">qApp</a><span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>quit); <span class="type"><a href="../qtwidgets/qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qvboxlayout.html">QVBoxLayout</a></span>; m_infoTab <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qtabwidget.html">QTabWidget</a></span>(<span class="keyword">this</span>); m_infoTab<span class="operator">-</span><span class="operator">></span>addTab(m_info<span class="operator">,</span> tr(<span class="string">"Vulkan Info"</span>)); m_infoTab<span class="operator">-</span><span class="operator">></span>addTab(logWidget<span class="operator">,</span> tr(<span class="string">"Debug Log"</span>)); layout<span class="operator">-</span><span class="operator">></span>addWidget(m_infoTab<span class="operator">,</span> <span class="number">2</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(m_number<span class="operator">,</span> <span class="number">1</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(wrapper<span class="operator">,</span> <span class="number">5</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(grabButton<span class="operator">,</span> <span class="number">1</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(quitButton<span class="operator">,</span> <span class="number">1</span>); setLayout(layout); } <span class="type">void</span> MainWindow<span class="operator">::</span>onVulkanInfoReceived(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>text) { m_info<span class="operator">-</span><span class="operator">></span>setPlainText(text); } <span class="type">void</span> MainWindow<span class="operator">::</span>onFrameQueued(<span class="type">int</span> colorValue) { m_number<span class="operator">-</span><span class="operator">></span>display(colorValue); } <span class="type">void</span> MainWindow<span class="operator">::</span>onGrabRequested() { <span class="keyword">if</span> (<span class="operator">!</span>m_window<span class="operator">-</span><span class="operator">></span>supportsGrab()) { <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Cannot grab"</span>)<span class="operator">,</span> tr(<span class="string">"This swapchain does not support readbacks."</span>)); <span class="keyword">return</span>; } <span class="type"><a href="qimage.html">QImage</a></span> img <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>grab(); <span class="comment">// Our startNextFrame() implementation is synchronous so img is ready to be</span> <span class="comment">// used right here.</span> <span class="type"><a href="../qtwidgets/qfiledialog.html">QFileDialog</a></span> fd(<span class="keyword">this</span>); fd<span class="operator">.</span>setAcceptMode(<span class="type"><a href="../qtwidgets/qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>AcceptSave); fd<span class="operator">.</span>setDefaultSuffix(<span class="string">"png"</span>); fd<span class="operator">.</span>selectFile(<span class="string">"test.png"</span>); <span class="keyword">if</span> (fd<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtwidgets/qdialog.html">QDialog</a></span><span class="operator">::</span>Accepted) img<span class="operator">.</span>save(fd<span class="operator">.</span>selectedFiles()<span class="operator">.</span>first()); } <span class="type"><a href="qvulkanwindowrenderer.html">QVulkanWindowRenderer</a></span> <span class="operator">*</span>VulkanWindow<span class="operator">::</span>createRenderer() { <span class="keyword">return</span> <span class="keyword">new</span> VulkanRenderer(<span class="keyword">this</span>); } VulkanRenderer<span class="operator">::</span>VulkanRenderer(VulkanWindow <span class="operator">*</span>w) : TriangleRenderer(w) { } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>initResources() { TriangleRenderer<span class="operator">::</span>initResources(); <span class="type"><a href="qvulkaninstance.html">QVulkanInstance</a></span> <span class="operator">*</span>inst <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>vulkanInstance(); m_devFuncs <span class="operator">=</span> inst<span class="operator">-</span><span class="operator">></span>deviceFunctions(m_window<span class="operator">-</span><span class="operator">></span>device()); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> info; info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">"Number of physical devices: %d\n"</span><span class="operator">,</span> m_window<span class="operator">-</span><span class="operator">></span>availablePhysicalDevices()<span class="operator">.</span>count()); <span class="type"><a href="qvulkanfunctions.html">QVulkanFunctions</a></span> <span class="operator">*</span>f <span class="operator">=</span> inst<span class="operator">-</span><span class="operator">></span>functions(); VkPhysicalDeviceProperties props; f<span class="operator">-</span><span class="operator">></span>vkGetPhysicalDeviceProperties(m_window<span class="operator">-</span><span class="operator">></span>physicalDevice()<span class="operator">,</span> <span class="operator">&</span>props); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">"Active physical device name: '%s' version %d.%d.%d\nAPI version %d.%d.%d\n"</span><span class="operator">,</span> props<span class="operator">.</span>deviceName<span class="operator">,</span> VK_VERSION_MAJOR(props<span class="operator">.</span>driverVersion)<span class="operator">,</span> VK_VERSION_MINOR(props<span class="operator">.</span>driverVersion)<span class="operator">,</span> VK_VERSION_PATCH(props<span class="operator">.</span>driverVersion)<span class="operator">,</span> VK_VERSION_MAJOR(props<span class="operator">.</span>apiVersion)<span class="operator">,</span> VK_VERSION_MINOR(props<span class="operator">.</span>apiVersion)<span class="operator">,</span> VK_VERSION_PATCH(props<span class="operator">.</span>apiVersion)); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Supported instance layers:\n"</span>); <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type"><a href="qvulkanlayer.html">QVulkanLayer</a></span> <span class="operator">&</span>layer : inst<span class="operator">-</span><span class="operator">></span>supportedLayers()) info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">" %s v%u\n"</span><span class="operator">,</span> layer<span class="operator">.</span>name<span class="operator">.</span>constData()<span class="operator">,</span> layer<span class="operator">.</span>version); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Enabled instance layers:\n"</span>); <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> <span class="operator">&</span>layer : inst<span class="operator">-</span><span class="operator">></span>layers()) info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">" %s\n"</span><span class="operator">,</span> layer<span class="operator">.</span>constData()); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Supported instance extensions:\n"</span>); <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type"><a href="qvulkanextension.html">QVulkanExtension</a></span> <span class="operator">&</span>ext : inst<span class="operator">-</span><span class="operator">></span>supportedExtensions()) info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">" %s v%u\n"</span><span class="operator">,</span> ext<span class="operator">.</span>name<span class="operator">.</span>constData()<span class="operator">,</span> ext<span class="operator">.</span>version); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Enabled instance extensions:\n"</span>); <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> <span class="operator">&</span>ext : inst<span class="operator">-</span><span class="operator">></span>extensions()) info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">" %s\n"</span><span class="operator">,</span> ext<span class="operator">.</span>constData()); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<span class="string">"Color format: %u\nDepth-stencil format: %u\n"</span><span class="operator">,</span> m_window<span class="operator">-</span><span class="operator">></span>colorFormat()<span class="operator">,</span> m_window<span class="operator">-</span><span class="operator">></span>depthStencilFormat()); info <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Supported sample counts:"</span>); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator"><</span><span class="type">int</span><span class="operator">></span> sampleCounts <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>supportedSampleCounts(); <span class="keyword">for</span> (<span class="type">int</span> count : sampleCounts) info <span class="operator">+</span><span class="operator">=</span> QLatin1Char(<span class="char">' '</span>) <span class="operator">+</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>number(count); info <span class="operator">+</span><span class="operator">=</span> QLatin1Char(<span class="char">'\n'</span>); <span class="keyword">emit</span> <span class="keyword">static_cast</span><span class="operator"><</span>VulkanWindow <span class="operator">*</span><span class="operator">></span>(m_window)<span class="operator">-</span><span class="operator">></span>vulkanInfoReceived(info); } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>startNextFrame() { TriangleRenderer<span class="operator">::</span>startNextFrame(); <span class="keyword">emit</span> <span class="keyword">static_cast</span><span class="operator"><</span>VulkanWindow <span class="operator">*</span><span class="operator">></span>(m_window)<span class="operator">-</span><span class="operator">></span>frameQueued(<span class="type">int</span>(m_rotation) <span class="operator">%</span> <span class="number">360</span>); } </pre> </div> <!-- @@@hellovulkanwidget/hellovulkanwidget.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>