<?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>hellovulkanwindow.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-hellovulkanwindow-example.html">Hello Vulkan Window Example</a></td><td >hellovulkanwindow.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">hellovulkanwindow.cpp Example File</h1> <span class="subtitle">hellovulkanwindow/hellovulkanwindow.cpp</span> <!-- $$$hellovulkanwindow/hellovulkanwindow.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 "hellovulkanwindow.h"</span> <span class="preprocessor">#include <QVulkanFunctions></span> <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(<span class="type"><a href="qvulkanwindow.html">QVulkanWindow</a></span> <span class="operator">*</span>w) : m_window(w) { } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>initResources() { <a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"initResources"</span>); m_devFuncs <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>vulkanInstance()<span class="operator">-</span><span class="operator">></span>deviceFunctions(m_window<span class="operator">-</span><span class="operator">></span>device()); } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>initSwapChainResources() { <a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"initSwapChainResources"</span>); } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>releaseSwapChainResources() { <a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"releaseSwapChainResources"</span>); } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>releaseResources() { <a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"releaseResources"</span>); } <span class="type">void</span> VulkanRenderer<span class="operator">::</span>startNextFrame() { m_green <span class="operator">+</span><span class="operator">=</span> <span class="number">0.005f</span>; <span class="keyword">if</span> (m_green <span class="operator">></span> <span class="number">1.0f</span>) m_green <span class="operator">=</span> <span class="number">0.0f</span>; VkClearColorValue clearColor <span class="operator">=</span> {{ <span class="number">0.0f</span><span class="operator">,</span> m_green<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span> }}; VkClearDepthStencilValue clearDS <span class="operator">=</span> { <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0</span> }; VkClearValue clearValues<span class="operator">[</span><span class="number">2</span><span class="operator">]</span>; memset(clearValues<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(clearValues)); clearValues<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>color <span class="operator">=</span> clearColor; clearValues<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>depthStencil <span class="operator">=</span> clearDS; VkRenderPassBeginInfo rpBeginInfo; memset(<span class="operator">&</span>rpBeginInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(rpBeginInfo)); rpBeginInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; rpBeginInfo<span class="operator">.</span>renderPass <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>defaultRenderPass(); rpBeginInfo<span class="operator">.</span>framebuffer <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>currentFramebuffer(); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> sz <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>swapChainImageSize(); rpBeginInfo<span class="operator">.</span>renderArea<span class="operator">.</span>extent<span class="operator">.</span>width <span class="operator">=</span> sz<span class="operator">.</span>width(); rpBeginInfo<span class="operator">.</span>renderArea<span class="operator">.</span>extent<span class="operator">.</span>height <span class="operator">=</span> sz<span class="operator">.</span>height(); rpBeginInfo<span class="operator">.</span>clearValueCount <span class="operator">=</span> <span class="number">2</span>; rpBeginInfo<span class="operator">.</span>pClearValues <span class="operator">=</span> clearValues; VkCommandBuffer cmdBuf <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>currentCommandBuffer(); m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdBeginRenderPass(cmdBuf<span class="operator">,</span> <span class="operator">&</span>rpBeginInfo<span class="operator">,</span> VK_SUBPASS_CONTENTS_INLINE); <span class="comment">// Do nothing else. We will just clear to green, changing the component on</span> <span class="comment">// every invocation. This also helps verifying the rate to which the thread</span> <span class="comment">// is throttled to. (The elapsed time between startNextFrame calls should</span> <span class="comment">// typically be around 16 ms. Note that rendering is 2 frames ahead of what</span> <span class="comment">// is displayed.)</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdEndRenderPass(cmdBuf); m_window<span class="operator">-</span><span class="operator">></span>frameReady(); m_window<span class="operator">-</span><span class="operator">></span>requestUpdate(); <span class="comment">// render continuously, throttled by the presentation rate</span> } </pre> </div> <!-- @@@hellovulkanwindow/hellovulkanwindow.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>