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<h1 class="title">hellovulkantexture.cpp Example File</h1>
<span class="subtitle">hellovulkantexture/hellovulkantexture.cpp</span>
<!-- $$$hellovulkantexture/hellovulkantexture.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 "hellovulkantexture.h"</span>
<span class="preprocessor">#include <QVulkanFunctions></span>
<span class="preprocessor">#include <QCoreApplication></span>
<span class="preprocessor">#include <QFile></span>
<span class="comment">// Use a triangle strip to get a quad.</span>
<span class="comment">//</span>
<span class="comment">// Note that the vertex data and the projection matrix assume OpenGL. With</span>
<span class="comment">// Vulkan Y is negated in clip space and the near/far plane is at 0/1 instead</span>
<span class="comment">// of -1/1. These will be corrected for by an extra transformation when</span>
<span class="comment">// calculating the modelview-projection matrix.</span>
<span class="keyword">static</span> <span class="type">float</span> vertexData<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> { <span class="comment">// Y up, front = CW</span>
<span class="comment">// x, y, z, u, v</span>
<span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>
};
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type">int</span> UNIFORM_DATA_SIZE <span class="operator">=</span> <span class="number">16</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(<span class="type">float</span>);
<span class="keyword">static</span> <span class="keyword">inline</span> VkDeviceSize aligned(VkDeviceSize v<span class="operator">,</span> VkDeviceSize byteAlign)
{
<span class="keyword">return</span> (v <span class="operator">+</span> byteAlign <span class="operator">-</span> <span class="number">1</span>) <span class="operator">&</span> <span class="operator">~</span>(byteAlign <span class="operator">-</span> <span class="number">1</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)
{
}
VkShaderModule VulkanRenderer<span class="operator">::</span>createShader(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>name)
{
<span class="type"><a href="../qtcore/qfile.html">QFile</a></span> file(name);
<span class="keyword">if</span> (<span class="operator">!</span>file<span class="operator">.</span>open(<span class="type"><a href="../qtcore/qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly)) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to read shader %s"</span><span class="operator">,</span> <a href="../qtcore/qtglobal.html#qPrintable">qPrintable</a>(name));
<span class="keyword">return</span> VK_NULL_HANDLE;
}
<span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> blob <span class="operator">=</span> file<span class="operator">.</span>readAll();
file<span class="operator">.</span>close();
VkShaderModuleCreateInfo shaderInfo;
memset(<span class="operator">&</span>shaderInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(shaderInfo));
shaderInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
shaderInfo<span class="operator">.</span>codeSize <span class="operator">=</span> blob<span class="operator">.</span>size();
shaderInfo<span class="operator">.</span>pCode <span class="operator">=</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="keyword">const</span> uint32_t <span class="operator">*</span><span class="operator">></span>(blob<span class="operator">.</span>constData());
VkShaderModule shaderModule;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateShaderModule(m_window<span class="operator">-</span><span class="operator">></span>device()<span class="operator">,</span> <span class="operator">&</span>shaderInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>shaderModule);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to create shader module: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> VK_NULL_HANDLE;
}
<span class="keyword">return</span> shaderModule;
}
bool VulkanRenderer<span class="operator">::</span>createTexture(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>name)
{
<span class="type"><a href="qimage.html">QImage</a></span> img(name);
<span class="keyword">if</span> (img<span class="operator">.</span>isNull()) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to load image %s"</span><span class="operator">,</span> <a href="../qtcore/qtglobal.html#qPrintable">qPrintable</a>(name));
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="comment">// Convert to byte ordered RGBA8. Use premultiplied alpha, see pColorBlendState in the pipeline.</span>
img <span class="operator">=</span> img<span class="operator">.</span>convertToFormat(<span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format_RGBA8888_Premultiplied);
<span class="type"><a href="qvulkanfunctions.html">QVulkanFunctions</a></span> <span class="operator">*</span>f <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>vulkanInstance()<span class="operator">-</span><span class="operator">></span>functions();
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
<span class="keyword">const</span> bool srgb <span class="operator">=</span> <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>arguments()<span class="operator">.</span>contains(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"--srgb"</span>));
<span class="keyword">if</span> (srgb)
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"sRGB swapchain was requested, making texture sRGB too"</span>);
m_texFormat <span class="operator">=</span> srgb <span class="operator">?</span> VK_FORMAT_R8G8B8A8_SRGB : VK_FORMAT_R8G8B8A8_UNORM;
<span class="comment">// Now we can either map and copy the image data directly, or have to go</span>
<span class="comment">// through a staging buffer to copy and convert into the internal optimal</span>
<span class="comment">// tiling format.</span>
VkFormatProperties props;
f<span class="operator">-</span><span class="operator">></span>vkGetPhysicalDeviceFormatProperties(m_window<span class="operator">-</span><span class="operator">></span>physicalDevice()<span class="operator">,</span> m_texFormat<span class="operator">,</span> <span class="operator">&</span>props);
<span class="keyword">const</span> bool canSampleLinear <span class="operator">=</span> (props<span class="operator">.</span>linearTilingFeatures <span class="operator">&</span> VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT);
<span class="keyword">const</span> bool canSampleOptimal <span class="operator">=</span> (props<span class="operator">.</span>optimalTilingFeatures <span class="operator">&</span> VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT);
<span class="keyword">if</span> (<span class="operator">!</span>canSampleLinear <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>canSampleOptimal) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Neither linear nor optimal image sampling is supported for RGBA8"</span>);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="keyword">static</span> bool alwaysStage <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qEnvironmentVariableIntValue">qEnvironmentVariableIntValue</a>(<span class="string">"QT_VK_FORCE_STAGE_TEX"</span>);
<span class="keyword">if</span> (canSampleLinear <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>alwaysStage) {
<span class="keyword">if</span> (<span class="operator">!</span>createTextureImage(img<span class="operator">.</span>size()<span class="operator">,</span> <span class="operator">&</span>m_texImage<span class="operator">,</span> <span class="operator">&</span>m_texMem<span class="operator">,</span>
VK_IMAGE_TILING_LINEAR<span class="operator">,</span> VK_IMAGE_USAGE_SAMPLED_BIT<span class="operator">,</span>
m_window<span class="operator">-</span><span class="operator">></span>hostVisibleMemoryIndex()))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="keyword">if</span> (<span class="operator">!</span>writeLinearImage(img<span class="operator">,</span> m_texImage<span class="operator">,</span> m_texMem))
<span class="keyword">return</span> <span class="keyword">false</span>;
m_texLayoutPending <span class="operator">=</span> <span class="keyword">true</span>;
} <span class="keyword">else</span> {
<span class="keyword">if</span> (<span class="operator">!</span>createTextureImage(img<span class="operator">.</span>size()<span class="operator">,</span> <span class="operator">&</span>m_texStaging<span class="operator">,</span> <span class="operator">&</span>m_texStagingMem<span class="operator">,</span>
VK_IMAGE_TILING_LINEAR<span class="operator">,</span> VK_IMAGE_USAGE_TRANSFER_SRC_BIT<span class="operator">,</span>
m_window<span class="operator">-</span><span class="operator">></span>hostVisibleMemoryIndex()))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="keyword">if</span> (<span class="operator">!</span>createTextureImage(img<span class="operator">.</span>size()<span class="operator">,</span> <span class="operator">&</span>m_texImage<span class="operator">,</span> <span class="operator">&</span>m_texMem<span class="operator">,</span>
VK_IMAGE_TILING_OPTIMAL<span class="operator">,</span> VK_IMAGE_USAGE_TRANSFER_DST_BIT <span class="operator">|</span> VK_IMAGE_USAGE_SAMPLED_BIT<span class="operator">,</span>
m_window<span class="operator">-</span><span class="operator">></span>deviceLocalMemoryIndex()))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="keyword">if</span> (<span class="operator">!</span>writeLinearImage(img<span class="operator">,</span> m_texStaging<span class="operator">,</span> m_texStagingMem))
<span class="keyword">return</span> <span class="keyword">false</span>;
m_texStagingPending <span class="operator">=</span> <span class="keyword">true</span>;
}
VkImageViewCreateInfo viewInfo;
memset(<span class="operator">&</span>viewInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(viewInfo));
viewInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
viewInfo<span class="operator">.</span>image <span class="operator">=</span> m_texImage;
viewInfo<span class="operator">.</span>viewType <span class="operator">=</span> VK_IMAGE_VIEW_TYPE_2D;
viewInfo<span class="operator">.</span>format <span class="operator">=</span> m_texFormat;
viewInfo<span class="operator">.</span>components<span class="operator">.</span>r <span class="operator">=</span> VK_COMPONENT_SWIZZLE_R;
viewInfo<span class="operator">.</span>components<span class="operator">.</span>g <span class="operator">=</span> VK_COMPONENT_SWIZZLE_G;
viewInfo<span class="operator">.</span>components<span class="operator">.</span>b <span class="operator">=</span> VK_COMPONENT_SWIZZLE_B;
viewInfo<span class="operator">.</span>components<span class="operator">.</span>a <span class="operator">=</span> VK_COMPONENT_SWIZZLE_A;
viewInfo<span class="operator">.</span>subresourceRange<span class="operator">.</span>aspectMask <span class="operator">=</span> VK_IMAGE_ASPECT_COLOR_BIT;
viewInfo<span class="operator">.</span>subresourceRange<span class="operator">.</span>levelCount <span class="operator">=</span> viewInfo<span class="operator">.</span>subresourceRange<span class="operator">.</span>layerCount <span class="operator">=</span> <span class="number">1</span>;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateImageView(dev<span class="operator">,</span> <span class="operator">&</span>viewInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_texView);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to create image view for texture: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
m_texSize <span class="operator">=</span> img<span class="operator">.</span>size();
<span class="keyword">return</span> <span class="keyword">true</span>;
}
bool VulkanRenderer<span class="operator">::</span>createTextureImage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> <span class="operator">&</span>size<span class="operator">,</span> VkImage <span class="operator">*</span>image<span class="operator">,</span> VkDeviceMemory <span class="operator">*</span>mem<span class="operator">,</span>
VkImageTiling tiling<span class="operator">,</span> VkImageUsageFlags usage<span class="operator">,</span> uint32_t memIndex)
{
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
VkImageCreateInfo imageInfo;
memset(<span class="operator">&</span>imageInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(imageInfo));
imageInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
imageInfo<span class="operator">.</span>imageType <span class="operator">=</span> VK_IMAGE_TYPE_2D;
imageInfo<span class="operator">.</span>format <span class="operator">=</span> m_texFormat;
imageInfo<span class="operator">.</span>extent<span class="operator">.</span>width <span class="operator">=</span> size<span class="operator">.</span>width();
imageInfo<span class="operator">.</span>extent<span class="operator">.</span>height <span class="operator">=</span> size<span class="operator">.</span>height();
imageInfo<span class="operator">.</span>extent<span class="operator">.</span>depth <span class="operator">=</span> <span class="number">1</span>;
imageInfo<span class="operator">.</span>mipLevels <span class="operator">=</span> <span class="number">1</span>;
imageInfo<span class="operator">.</span>arrayLayers <span class="operator">=</span> <span class="number">1</span>;
imageInfo<span class="operator">.</span>samples <span class="operator">=</span> VK_SAMPLE_COUNT_1_BIT;
imageInfo<span class="operator">.</span>tiling <span class="operator">=</span> tiling;
imageInfo<span class="operator">.</span>usage <span class="operator">=</span> usage;
imageInfo<span class="operator">.</span>initialLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_PREINITIALIZED;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateImage(dev<span class="operator">,</span> <span class="operator">&</span>imageInfo<span class="operator">,</span> nullptr<span class="operator">,</span> image);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to create linear image for texture: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
VkMemoryRequirements memReq;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkGetImageMemoryRequirements(dev<span class="operator">,</span> <span class="operator">*</span>image<span class="operator">,</span> <span class="operator">&</span>memReq);
<span class="keyword">if</span> (<span class="operator">!</span>(memReq<span class="operator">.</span>memoryTypeBits <span class="operator">&</span> (<span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> memIndex))) {
VkPhysicalDeviceMemoryProperties physDevMemProps;
m_window<span class="operator">-</span><span class="operator">></span>vulkanInstance()<span class="operator">-</span><span class="operator">></span>functions()<span class="operator">-</span><span class="operator">></span>vkGetPhysicalDeviceMemoryProperties(m_window<span class="operator">-</span><span class="operator">></span>physicalDevice()<span class="operator">,</span> <span class="operator">&</span>physDevMemProps);
<span class="keyword">for</span> (uint32_t i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> physDevMemProps<span class="operator">.</span>memoryTypeCount; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="keyword">if</span> (<span class="operator">!</span>(memReq<span class="operator">.</span>memoryTypeBits <span class="operator">&</span> (<span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> i)))
<span class="keyword">continue</span>;
memIndex <span class="operator">=</span> i;
}
}
VkMemoryAllocateInfo allocInfo <span class="operator">=</span> {
VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
memReq<span class="operator">.</span>size<span class="operator">,</span>
memIndex
};
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"allocating %u bytes for texture image"</span><span class="operator">,</span> uint32_t(memReq<span class="operator">.</span>size));
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkAllocateMemory(dev<span class="operator">,</span> <span class="operator">&</span>allocInfo<span class="operator">,</span> nullptr<span class="operator">,</span> mem);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to allocate memory for linear image: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkBindImageMemory(dev<span class="operator">,</span> <span class="operator">*</span>image<span class="operator">,</span> <span class="operator">*</span>mem<span class="operator">,</span> <span class="number">0</span>);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to bind linear image memory: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="keyword">return</span> <span class="keyword">true</span>;
}
bool VulkanRenderer<span class="operator">::</span>writeLinearImage(<span class="keyword">const</span> <span class="type"><a href="qimage.html">QImage</a></span> <span class="operator">&</span>img<span class="operator">,</span> VkImage image<span class="operator">,</span> VkDeviceMemory memory)
{
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
VkImageSubresource subres <span class="operator">=</span> {
VK_IMAGE_ASPECT_COLOR_BIT<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span> <span class="comment">// mip level</span>
<span class="number">0</span>
};
VkSubresourceLayout layout;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkGetImageSubresourceLayout(dev<span class="operator">,</span> image<span class="operator">,</span> <span class="operator">&</span>subres<span class="operator">,</span> <span class="operator">&</span>layout);
<span class="type"><a href="../qtcore/qtglobal.html#uchar-typedef">uchar</a></span> <span class="operator">*</span>p;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkMapMemory(dev<span class="operator">,</span> memory<span class="operator">,</span> layout<span class="operator">.</span>offset<span class="operator">,</span> layout<span class="operator">.</span>size<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">void</span> <span class="operator">*</span><span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>p));
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"Failed to map memory for linear image: %d"</span><span class="operator">,</span> err);
<span class="keyword">return</span> <span class="keyword">false</span>;
}
<span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> img<span class="operator">.</span>height(); <span class="operator">+</span><span class="operator">+</span>y) {
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qtglobal.html#uchar-typedef">uchar</a></span> <span class="operator">*</span>line <span class="operator">=</span> img<span class="operator">.</span>constScanLine(y);
memcpy(p<span class="operator">,</span> line<span class="operator">,</span> img<span class="operator">.</span>width() <span class="operator">*</span> <span class="number">4</span>);
p <span class="operator">+</span><span class="operator">=</span> layout<span class="operator">.</span>rowPitch;
}
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkUnmapMemory(dev<span class="operator">,</span> memory);
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="type">void</span> VulkanRenderer<span class="operator">::</span>ensureTexture()
{
<span class="keyword">if</span> (<span class="operator">!</span>m_texLayoutPending <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>m_texStagingPending)
<span class="keyword">return</span>;
Q_ASSERT(m_texLayoutPending <span class="operator">!</span><span class="operator">=</span> m_texStagingPending);
VkCommandBuffer cb <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>currentCommandBuffer();
VkImageMemoryBarrier barrier;
memset(<span class="operator">&</span>barrier<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(barrier));
barrier<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
barrier<span class="operator">.</span>subresourceRange<span class="operator">.</span>aspectMask <span class="operator">=</span> VK_IMAGE_ASPECT_COLOR_BIT;
barrier<span class="operator">.</span>subresourceRange<span class="operator">.</span>levelCount <span class="operator">=</span> barrier<span class="operator">.</span>subresourceRange<span class="operator">.</span>layerCount <span class="operator">=</span> <span class="number">1</span>;
<span class="keyword">if</span> (m_texLayoutPending) {
m_texLayoutPending <span class="operator">=</span> <span class="keyword">false</span>;
barrier<span class="operator">.</span>oldLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_PREINITIALIZED;
barrier<span class="operator">.</span>newLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
barrier<span class="operator">.</span>srcAccessMask <span class="operator">=</span> VK_ACCESS_HOST_WRITE_BIT;
barrier<span class="operator">.</span>dstAccessMask <span class="operator">=</span> VK_ACCESS_SHADER_READ_BIT;
barrier<span class="operator">.</span>image <span class="operator">=</span> m_texImage;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdPipelineBarrier(cb<span class="operator">,</span>
VK_PIPELINE_STAGE_HOST_BIT<span class="operator">,</span>
VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>barrier);
} <span class="keyword">else</span> {
m_texStagingPending <span class="operator">=</span> <span class="keyword">false</span>;
barrier<span class="operator">.</span>oldLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_PREINITIALIZED;
barrier<span class="operator">.</span>newLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
barrier<span class="operator">.</span>srcAccessMask <span class="operator">=</span> VK_ACCESS_HOST_WRITE_BIT;
barrier<span class="operator">.</span>dstAccessMask <span class="operator">=</span> VK_ACCESS_TRANSFER_READ_BIT;
barrier<span class="operator">.</span>image <span class="operator">=</span> m_texStaging;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdPipelineBarrier(cb<span class="operator">,</span>
VK_PIPELINE_STAGE_HOST_BIT<span class="operator">,</span>
VK_PIPELINE_STAGE_TRANSFER_BIT<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>barrier);
barrier<span class="operator">.</span>oldLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_PREINITIALIZED;
barrier<span class="operator">.</span>newLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
barrier<span class="operator">.</span>srcAccessMask <span class="operator">=</span> <span class="number">0</span>;
barrier<span class="operator">.</span>dstAccessMask <span class="operator">=</span> VK_ACCESS_TRANSFER_WRITE_BIT;
barrier<span class="operator">.</span>image <span class="operator">=</span> m_texImage;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdPipelineBarrier(cb<span class="operator">,</span>
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT<span class="operator">,</span>
VK_PIPELINE_STAGE_TRANSFER_BIT<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>barrier);
VkImageCopy copyInfo;
memset(<span class="operator">&</span>copyInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(copyInfo));
copyInfo<span class="operator">.</span>srcSubresource<span class="operator">.</span>aspectMask <span class="operator">=</span> VK_IMAGE_ASPECT_COLOR_BIT;
copyInfo<span class="operator">.</span>srcSubresource<span class="operator">.</span>layerCount <span class="operator">=</span> <span class="number">1</span>;
copyInfo<span class="operator">.</span>dstSubresource<span class="operator">.</span>aspectMask <span class="operator">=</span> VK_IMAGE_ASPECT_COLOR_BIT;
copyInfo<span class="operator">.</span>dstSubresource<span class="operator">.</span>layerCount <span class="operator">=</span> <span class="number">1</span>;
copyInfo<span class="operator">.</span>extent<span class="operator">.</span>width <span class="operator">=</span> m_texSize<span class="operator">.</span>width();
copyInfo<span class="operator">.</span>extent<span class="operator">.</span>height <span class="operator">=</span> m_texSize<span class="operator">.</span>height();
copyInfo<span class="operator">.</span>extent<span class="operator">.</span>depth <span class="operator">=</span> <span class="number">1</span>;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdCopyImage(cb<span class="operator">,</span> m_texStaging<span class="operator">,</span> VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL<span class="operator">,</span>
m_texImage<span class="operator">,</span> VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>copyInfo);
barrier<span class="operator">.</span>oldLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
barrier<span class="operator">.</span>newLayout <span class="operator">=</span> VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
barrier<span class="operator">.</span>srcAccessMask <span class="operator">=</span> VK_ACCESS_TRANSFER_WRITE_BIT;
barrier<span class="operator">.</span>dstAccessMask <span class="operator">=</span> VK_ACCESS_SHADER_READ_BIT;
barrier<span class="operator">.</span>image <span class="operator">=</span> m_texImage;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdPipelineBarrier(cb<span class="operator">,</span>
VK_PIPELINE_STAGE_TRANSFER_BIT<span class="operator">,</span>
VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>barrier);
}
}
<span class="type">void</span> VulkanRenderer<span class="operator">::</span>initResources()
{
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"initResources"</span>);
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
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(dev);
<span class="comment">// The setup is similar to hellovulkantriangle. The difference is the</span>
<span class="comment">// presence of a second vertex attribute (texcoord), a sampler, and that we</span>
<span class="comment">// need blending.</span>
<span class="keyword">const</span> <span class="type">int</span> concurrentFrameCount <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>concurrentFrameCount();
<span class="keyword">const</span> VkPhysicalDeviceLimits <span class="operator">*</span>pdevLimits <span class="operator">=</span> <span class="operator">&</span>m_window<span class="operator">-</span><span class="operator">></span>physicalDeviceProperties()<span class="operator">-</span><span class="operator">></span>limits;
<span class="keyword">const</span> VkDeviceSize uniAlign <span class="operator">=</span> pdevLimits<span class="operator">-</span><span class="operator">></span>minUniformBufferOffsetAlignment;
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>(<span class="string">"uniform buffer offset alignment is %u"</span><span class="operator">,</span> (<span class="type"><a href="../qtcore/qtglobal.html#uint-typedef">uint</a></span>) uniAlign);
VkBufferCreateInfo bufInfo;
memset(<span class="operator">&</span>bufInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(bufInfo));
bufInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
<span class="comment">// Our internal layout is vertex, uniform, uniform, ... with each uniform buffer start offset aligned to uniAlign.</span>
<span class="keyword">const</span> VkDeviceSize vertexAllocSize <span class="operator">=</span> aligned(<span class="keyword">sizeof</span>(vertexData)<span class="operator">,</span> uniAlign);
<span class="keyword">const</span> VkDeviceSize uniformAllocSize <span class="operator">=</span> aligned(UNIFORM_DATA_SIZE<span class="operator">,</span> uniAlign);
bufInfo<span class="operator">.</span>size <span class="operator">=</span> vertexAllocSize <span class="operator">+</span> concurrentFrameCount <span class="operator">*</span> uniformAllocSize;
bufInfo<span class="operator">.</span>usage <span class="operator">=</span> VK_BUFFER_USAGE_VERTEX_BUFFER_BIT <span class="operator">|</span> VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateBuffer(dev<span class="operator">,</span> <span class="operator">&</span>bufInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_buf);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create buffer: %d"</span><span class="operator">,</span> err);
VkMemoryRequirements memReq;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkGetBufferMemoryRequirements(dev<span class="operator">,</span> m_buf<span class="operator">,</span> <span class="operator">&</span>memReq);
VkMemoryAllocateInfo memAllocInfo <span class="operator">=</span> {
VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
memReq<span class="operator">.</span>size<span class="operator">,</span>
m_window<span class="operator">-</span><span class="operator">></span>hostVisibleMemoryIndex()
};
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkAllocateMemory(dev<span class="operator">,</span> <span class="operator">&</span>memAllocInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_bufMem);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to allocate memory: %d"</span><span class="operator">,</span> err);
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkBindBufferMemory(dev<span class="operator">,</span> m_buf<span class="operator">,</span> m_bufMem<span class="operator">,</span> <span class="number">0</span>);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to bind buffer memory: %d"</span><span class="operator">,</span> err);
<span class="type"><a href="../qtcore/qtglobal.html#quint8-typedef">quint8</a></span> <span class="operator">*</span>p;
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkMapMemory(dev<span class="operator">,</span> m_bufMem<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> memReq<span class="operator">.</span>size<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">void</span> <span class="operator">*</span><span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>p));
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to map memory: %d"</span><span class="operator">,</span> err);
memcpy(p<span class="operator">,</span> vertexData<span class="operator">,</span> <span class="keyword">sizeof</span>(vertexData));
QMatrix4x4 ident;
memset(m_uniformBufInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(m_uniformBufInfo));
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> concurrentFrameCount; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="keyword">const</span> VkDeviceSize offset <span class="operator">=</span> vertexAllocSize <span class="operator">+</span> i <span class="operator">*</span> uniformAllocSize;
memcpy(p <span class="operator">+</span> offset<span class="operator">,</span> ident<span class="operator">.</span>constData()<span class="operator">,</span> <span class="number">16</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(<span class="type">float</span>));
m_uniformBufInfo<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>buffer <span class="operator">=</span> m_buf;
m_uniformBufInfo<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>offset <span class="operator">=</span> offset;
m_uniformBufInfo<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>range <span class="operator">=</span> uniformAllocSize;
}
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkUnmapMemory(dev<span class="operator">,</span> m_bufMem);
VkVertexInputBindingDescription vertexBindingDesc <span class="operator">=</span> {
<span class="number">0</span><span class="operator">,</span> <span class="comment">// binding</span>
<span class="number">5</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(<span class="type">float</span>)<span class="operator">,</span>
VK_VERTEX_INPUT_RATE_VERTEX
};
VkVertexInputAttributeDescription vertexAttrDesc<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
{ <span class="comment">// position</span>
<span class="number">0</span><span class="operator">,</span> <span class="comment">// location</span>
<span class="number">0</span><span class="operator">,</span> <span class="comment">// binding</span>
VK_FORMAT_R32G32B32_SFLOAT<span class="operator">,</span>
<span class="number">0</span>
}<span class="operator">,</span>
{ <span class="comment">// texcoord</span>
<span class="number">1</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span>
VK_FORMAT_R32G32_SFLOAT<span class="operator">,</span>
<span class="number">3</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(<span class="type">float</span>)
}
};
VkPipelineVertexInputStateCreateInfo vertexInputInfo;
vertexInputInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo<span class="operator">.</span>pNext <span class="operator">=</span> nullptr;
vertexInputInfo<span class="operator">.</span>flags <span class="operator">=</span> <span class="number">0</span>;
vertexInputInfo<span class="operator">.</span>vertexBindingDescriptionCount <span class="operator">=</span> <span class="number">1</span>;
vertexInputInfo<span class="operator">.</span>pVertexBindingDescriptions <span class="operator">=</span> <span class="operator">&</span>vertexBindingDesc;
vertexInputInfo<span class="operator">.</span>vertexAttributeDescriptionCount <span class="operator">=</span> <span class="number">2</span>;
vertexInputInfo<span class="operator">.</span>pVertexAttributeDescriptions <span class="operator">=</span> vertexAttrDesc;
<span class="comment">// Sampler.</span>
VkSamplerCreateInfo samplerInfo;
memset(<span class="operator">&</span>samplerInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(samplerInfo));
samplerInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
samplerInfo<span class="operator">.</span>magFilter <span class="operator">=</span> VK_FILTER_NEAREST;
samplerInfo<span class="operator">.</span>minFilter <span class="operator">=</span> VK_FILTER_NEAREST;
samplerInfo<span class="operator">.</span>addressModeU <span class="operator">=</span> VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerInfo<span class="operator">.</span>addressModeV <span class="operator">=</span> VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerInfo<span class="operator">.</span>addressModeW <span class="operator">=</span> VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerInfo<span class="operator">.</span>maxAnisotropy <span class="operator">=</span> <span class="number">1.0f</span>;
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateSampler(dev<span class="operator">,</span> <span class="operator">&</span>samplerInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_sampler);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create sampler: %d"</span><span class="operator">,</span> err);
<span class="comment">// Texture.</span>
<span class="keyword">if</span> (<span class="operator">!</span>createTexture(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">":/qt256.png"</span>)))
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create texture"</span>);
<span class="comment">// Set up descriptor set and its layout.</span>
VkDescriptorPoolSize descPoolSizes<span class="operator">[</span><span class="number">2</span><span class="operator">]</span> <span class="operator">=</span> {
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER<span class="operator">,</span> uint32_t(concurrentFrameCount) }<span class="operator">,</span>
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER<span class="operator">,</span> uint32_t(concurrentFrameCount) }
};
VkDescriptorPoolCreateInfo descPoolInfo;
memset(<span class="operator">&</span>descPoolInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(descPoolInfo));
descPoolInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
descPoolInfo<span class="operator">.</span>maxSets <span class="operator">=</span> concurrentFrameCount;
descPoolInfo<span class="operator">.</span>poolSizeCount <span class="operator">=</span> <span class="number">2</span>;
descPoolInfo<span class="operator">.</span>pPoolSizes <span class="operator">=</span> descPoolSizes;
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateDescriptorPool(dev<span class="operator">,</span> <span class="operator">&</span>descPoolInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_descPool);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create descriptor pool: %d"</span><span class="operator">,</span> err);
VkDescriptorSetLayoutBinding layoutBinding<span class="operator">[</span><span class="number">2</span><span class="operator">]</span> <span class="operator">=</span>
{
{
<span class="number">0</span><span class="operator">,</span> <span class="comment">// binding</span>
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="comment">// descriptorCount</span>
VK_SHADER_STAGE_VERTEX_BIT<span class="operator">,</span>
nullptr
}<span class="operator">,</span>
{
<span class="number">1</span><span class="operator">,</span> <span class="comment">// binding</span>
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span> <span class="comment">// descriptorCount</span>
VK_SHADER_STAGE_FRAGMENT_BIT<span class="operator">,</span>
nullptr
}
};
VkDescriptorSetLayoutCreateInfo descLayoutInfo <span class="operator">=</span> {
VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span>
<span class="number">2</span><span class="operator">,</span> <span class="comment">// bindingCount</span>
layoutBinding
};
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateDescriptorSetLayout(dev<span class="operator">,</span> <span class="operator">&</span>descLayoutInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_descSetLayout);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create descriptor set layout: %d"</span><span class="operator">,</span> err);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> concurrentFrameCount; <span class="operator">+</span><span class="operator">+</span>i) {
VkDescriptorSetAllocateInfo descSetAllocInfo <span class="operator">=</span> {
VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
m_descPool<span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span>
<span class="operator">&</span>m_descSetLayout
};
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkAllocateDescriptorSets(dev<span class="operator">,</span> <span class="operator">&</span>descSetAllocInfo<span class="operator">,</span> <span class="operator">&</span>m_descSet<span class="operator">[</span>i<span class="operator">]</span>);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to allocate descriptor set: %d"</span><span class="operator">,</span> err);
VkWriteDescriptorSet descWrite<span class="operator">[</span><span class="number">2</span><span class="operator">]</span>;
memset(descWrite<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(descWrite));
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>dstSet <span class="operator">=</span> m_descSet<span class="operator">[</span>i<span class="operator">]</span>;
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>dstBinding <span class="operator">=</span> <span class="number">0</span>;
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>descriptorCount <span class="operator">=</span> <span class="number">1</span>;
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>descriptorType <span class="operator">=</span> VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
descWrite<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>pBufferInfo <span class="operator">=</span> <span class="operator">&</span>m_uniformBufInfo<span class="operator">[</span>i<span class="operator">]</span>;
VkDescriptorImageInfo descImageInfo <span class="operator">=</span> {
m_sampler<span class="operator">,</span>
m_texView<span class="operator">,</span>
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
};
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>dstSet <span class="operator">=</span> m_descSet<span class="operator">[</span>i<span class="operator">]</span>;
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>dstBinding <span class="operator">=</span> <span class="number">1</span>;
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>descriptorCount <span class="operator">=</span> <span class="number">1</span>;
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>descriptorType <span class="operator">=</span> VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
descWrite<span class="operator">[</span><span class="number">1</span><span class="operator">]</span><span class="operator">.</span>pImageInfo <span class="operator">=</span> <span class="operator">&</span>descImageInfo;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkUpdateDescriptorSets(dev<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> descWrite<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr);
}
<span class="comment">// Pipeline cache</span>
VkPipelineCacheCreateInfo pipelineCacheInfo;
memset(<span class="operator">&</span>pipelineCacheInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(pipelineCacheInfo));
pipelineCacheInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreatePipelineCache(dev<span class="operator">,</span> <span class="operator">&</span>pipelineCacheInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_pipelineCache);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create pipeline cache: %d"</span><span class="operator">,</span> err);
<span class="comment">// Pipeline layout</span>
VkPipelineLayoutCreateInfo pipelineLayoutInfo;
memset(<span class="operator">&</span>pipelineLayoutInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(pipelineLayoutInfo));
pipelineLayoutInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo<span class="operator">.</span>setLayoutCount <span class="operator">=</span> <span class="number">1</span>;
pipelineLayoutInfo<span class="operator">.</span>pSetLayouts <span class="operator">=</span> <span class="operator">&</span>m_descSetLayout;
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreatePipelineLayout(dev<span class="operator">,</span> <span class="operator">&</span>pipelineLayoutInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_pipelineLayout);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create pipeline layout: %d"</span><span class="operator">,</span> err);
<span class="comment">// Shaders</span>
VkShaderModule vertShaderModule <span class="operator">=</span> createShader(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">":/texture_vert.spv"</span>));
VkShaderModule fragShaderModule <span class="operator">=</span> createShader(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">":/texture_frag.spv"</span>));
<span class="comment">// Graphics pipeline</span>
VkGraphicsPipelineCreateInfo pipelineInfo;
memset(<span class="operator">&</span>pipelineInfo<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(pipelineInfo));
pipelineInfo<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
VkPipelineShaderStageCreateInfo shaderStages<span class="operator">[</span><span class="number">2</span><span class="operator">]</span> <span class="operator">=</span> {
{
VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span>
VK_SHADER_STAGE_VERTEX_BIT<span class="operator">,</span>
vertShaderModule<span class="operator">,</span>
<span class="string">"main"</span><span class="operator">,</span>
nullptr
}<span class="operator">,</span>
{
VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO<span class="operator">,</span>
nullptr<span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span>
VK_SHADER_STAGE_FRAGMENT_BIT<span class="operator">,</span>
fragShaderModule<span class="operator">,</span>
<span class="string">"main"</span><span class="operator">,</span>
nullptr
}
};
pipelineInfo<span class="operator">.</span>stageCount <span class="operator">=</span> <span class="number">2</span>;
pipelineInfo<span class="operator">.</span>pStages <span class="operator">=</span> shaderStages;
pipelineInfo<span class="operator">.</span>pVertexInputState <span class="operator">=</span> <span class="operator">&</span>vertexInputInfo;
VkPipelineInputAssemblyStateCreateInfo ia;
memset(<span class="operator">&</span>ia<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(ia));
ia<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
ia<span class="operator">.</span>topology <span class="operator">=</span> VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
pipelineInfo<span class="operator">.</span>pInputAssemblyState <span class="operator">=</span> <span class="operator">&</span>ia;
<span class="comment">// The viewport and scissor will be set dynamically via vkCmdSetViewport/Scissor.</span>
<span class="comment">// This way the pipeline does not need to be touched when resizing the window.</span>
VkPipelineViewportStateCreateInfo vp;
memset(<span class="operator">&</span>vp<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(vp));
vp<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
vp<span class="operator">.</span>viewportCount <span class="operator">=</span> <span class="number">1</span>;
vp<span class="operator">.</span>scissorCount <span class="operator">=</span> <span class="number">1</span>;
pipelineInfo<span class="operator">.</span>pViewportState <span class="operator">=</span> <span class="operator">&</span>vp;
VkPipelineRasterizationStateCreateInfo rs;
memset(<span class="operator">&</span>rs<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(rs));
rs<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rs<span class="operator">.</span>polygonMode <span class="operator">=</span> VK_POLYGON_MODE_FILL;
rs<span class="operator">.</span>cullMode <span class="operator">=</span> VK_CULL_MODE_BACK_BIT;
rs<span class="operator">.</span>frontFace <span class="operator">=</span> VK_FRONT_FACE_CLOCKWISE;
rs<span class="operator">.</span>lineWidth <span class="operator">=</span> <span class="number">1.0f</span>;
pipelineInfo<span class="operator">.</span>pRasterizationState <span class="operator">=</span> <span class="operator">&</span>rs;
VkPipelineMultisampleStateCreateInfo ms;
memset(<span class="operator">&</span>ms<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(ms));
ms<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
ms<span class="operator">.</span>rasterizationSamples <span class="operator">=</span> VK_SAMPLE_COUNT_1_BIT;
pipelineInfo<span class="operator">.</span>pMultisampleState <span class="operator">=</span> <span class="operator">&</span>ms;
VkPipelineDepthStencilStateCreateInfo ds;
memset(<span class="operator">&</span>ds<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(ds));
ds<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
ds<span class="operator">.</span>depthTestEnable <span class="operator">=</span> VK_TRUE;
ds<span class="operator">.</span>depthWriteEnable <span class="operator">=</span> VK_TRUE;
ds<span class="operator">.</span>depthCompareOp <span class="operator">=</span> VK_COMPARE_OP_LESS_OR_EQUAL;
pipelineInfo<span class="operator">.</span>pDepthStencilState <span class="operator">=</span> <span class="operator">&</span>ds;
VkPipelineColorBlendStateCreateInfo cb;
memset(<span class="operator">&</span>cb<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(cb));
cb<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
<span class="comment">// assume pre-multiplied alpha, blend, write out all of rgba</span>
VkPipelineColorBlendAttachmentState att;
memset(<span class="operator">&</span>att<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(att));
att<span class="operator">.</span>colorWriteMask <span class="operator">=</span> <span class="number">0xF</span>;
att<span class="operator">.</span>blendEnable <span class="operator">=</span> VK_TRUE;
att<span class="operator">.</span>srcColorBlendFactor <span class="operator">=</span> VK_BLEND_FACTOR_ONE;
att<span class="operator">.</span>dstColorBlendFactor <span class="operator">=</span> VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
att<span class="operator">.</span>colorBlendOp <span class="operator">=</span> VK_BLEND_OP_ADD;
att<span class="operator">.</span>srcAlphaBlendFactor <span class="operator">=</span> VK_BLEND_FACTOR_ONE;
att<span class="operator">.</span>dstAlphaBlendFactor <span class="operator">=</span> VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
att<span class="operator">.</span>alphaBlendOp <span class="operator">=</span> VK_BLEND_OP_ADD;
cb<span class="operator">.</span>attachmentCount <span class="operator">=</span> <span class="number">1</span>;
cb<span class="operator">.</span>pAttachments <span class="operator">=</span> <span class="operator">&</span>att;
pipelineInfo<span class="operator">.</span>pColorBlendState <span class="operator">=</span> <span class="operator">&</span>cb;
VkDynamicState dynEnable<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> { VK_DYNAMIC_STATE_VIEWPORT<span class="operator">,</span> VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dyn;
memset(<span class="operator">&</span>dyn<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(dyn));
dyn<span class="operator">.</span>sType <span class="operator">=</span> VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dyn<span class="operator">.</span>dynamicStateCount <span class="operator">=</span> <span class="keyword">sizeof</span>(dynEnable) <span class="operator">/</span> <span class="keyword">sizeof</span>(VkDynamicState);
dyn<span class="operator">.</span>pDynamicStates <span class="operator">=</span> dynEnable;
pipelineInfo<span class="operator">.</span>pDynamicState <span class="operator">=</span> <span class="operator">&</span>dyn;
pipelineInfo<span class="operator">.</span>layout <span class="operator">=</span> m_pipelineLayout;
pipelineInfo<span class="operator">.</span>renderPass <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>defaultRenderPass();
err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCreateGraphicsPipelines(dev<span class="operator">,</span> m_pipelineCache<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>pipelineInfo<span class="operator">,</span> nullptr<span class="operator">,</span> <span class="operator">&</span>m_pipeline);
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to create graphics pipeline: %d"</span><span class="operator">,</span> err);
<span class="keyword">if</span> (vertShaderModule)
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyShaderModule(dev<span class="operator">,</span> vertShaderModule<span class="operator">,</span> nullptr);
<span class="keyword">if</span> (fragShaderModule)
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyShaderModule(dev<span class="operator">,</span> fragShaderModule<span class="operator">,</span> nullptr);
}
<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="comment">// Projection matrix</span>
m_proj <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>clipCorrectionMatrix(); <span class="comment">// adjust for Vulkan-OpenGL clip space differences</span>
<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();
m_proj<span class="operator">.</span>perspective(<span class="number">45.0f</span><span class="operator">,</span> sz<span class="operator">.</span>width() <span class="operator">/</span> (<span class="type">float</span>) sz<span class="operator">.</span>height()<span class="operator">,</span> <span class="number">0.01f</span><span class="operator">,</span> <span class="number">100.0f</span>);
m_proj<span class="operator">.</span>translate(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">4</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>);
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
<span class="keyword">if</span> (m_sampler) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroySampler(dev<span class="operator">,</span> m_sampler<span class="operator">,</span> nullptr);
m_sampler <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_texStaging) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyImage(dev<span class="operator">,</span> m_texStaging<span class="operator">,</span> nullptr);
m_texStaging <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_texStagingMem) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkFreeMemory(dev<span class="operator">,</span> m_texStagingMem<span class="operator">,</span> nullptr);
m_texStagingMem <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_texView) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyImageView(dev<span class="operator">,</span> m_texView<span class="operator">,</span> nullptr);
m_texView <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_texImage) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyImage(dev<span class="operator">,</span> m_texImage<span class="operator">,</span> nullptr);
m_texImage <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_texMem) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkFreeMemory(dev<span class="operator">,</span> m_texMem<span class="operator">,</span> nullptr);
m_texMem <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_pipeline) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyPipeline(dev<span class="operator">,</span> m_pipeline<span class="operator">,</span> nullptr);
m_pipeline <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_pipelineLayout) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyPipelineLayout(dev<span class="operator">,</span> m_pipelineLayout<span class="operator">,</span> nullptr);
m_pipelineLayout <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_pipelineCache) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyPipelineCache(dev<span class="operator">,</span> m_pipelineCache<span class="operator">,</span> nullptr);
m_pipelineCache <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_descSetLayout) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyDescriptorSetLayout(dev<span class="operator">,</span> m_descSetLayout<span class="operator">,</span> nullptr);
m_descSetLayout <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_descPool) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyDescriptorPool(dev<span class="operator">,</span> m_descPool<span class="operator">,</span> nullptr);
m_descPool <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_buf) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkDestroyBuffer(dev<span class="operator">,</span> m_buf<span class="operator">,</span> nullptr);
m_buf <span class="operator">=</span> VK_NULL_HANDLE;
}
<span class="keyword">if</span> (m_bufMem) {
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkFreeMemory(dev<span class="operator">,</span> m_bufMem<span class="operator">,</span> nullptr);
m_bufMem <span class="operator">=</span> VK_NULL_HANDLE;
}
}
<span class="type">void</span> VulkanRenderer<span class="operator">::</span>startNextFrame()
{
VkDevice dev <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>device();
VkCommandBuffer cb <span class="operator">=</span> m_window<span class="operator">-</span><span class="operator">></span>currentCommandBuffer();
<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();
<span class="comment">// Add the necessary barriers and do the host-linear -> device-optimal copy, if not yet done.</span>
ensureTexture();
VkClearColorValue clearColor <span class="operator">=</span> {{ <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span> }};
VkClearDepthStencilValue clearDS <span class="operator">=</span> { <span class="number">1</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();
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="type"><a href="../qtcore/qtglobal.html#quint8-typedef">quint8</a></span> <span class="operator">*</span>p;
VkResult err <span class="operator">=</span> m_devFuncs<span class="operator">-</span><span class="operator">></span>vkMapMemory(dev<span class="operator">,</span> m_bufMem<span class="operator">,</span> m_uniformBufInfo<span class="operator">[</span>m_window<span class="operator">-</span><span class="operator">></span>currentFrame()<span class="operator">]</span><span class="operator">.</span>offset<span class="operator">,</span>
UNIFORM_DATA_SIZE<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">void</span> <span class="operator">*</span><span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>p));
<span class="keyword">if</span> (err <span class="operator">!</span><span class="operator">=</span> VK_SUCCESS)
<a href="../qtcore/qtglobal.html#qFatal">qFatal</a>(<span class="string">"Failed to map memory: %d"</span><span class="operator">,</span> err);
QMatrix4x4 m <span class="operator">=</span> m_proj;
m<span class="operator">.</span>rotate(m_rotation<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
memcpy(p<span class="operator">,</span> m<span class="operator">.</span>constData()<span class="operator">,</span> <span class="number">16</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(<span class="type">float</span>));
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkUnmapMemory(dev<span class="operator">,</span> m_bufMem);
<span class="comment">// Not exactly a real animation system, just advance on every frame for now.</span>
m_rotation <span class="operator">+</span><span class="operator">=</span> <span class="number">1.0f</span>;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdBindPipeline(cb<span class="operator">,</span> VK_PIPELINE_BIND_POINT_GRAPHICS<span class="operator">,</span> m_pipeline);
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdBindDescriptorSets(cb<span class="operator">,</span> VK_PIPELINE_BIND_POINT_GRAPHICS<span class="operator">,</span> m_pipelineLayout<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span>
<span class="operator">&</span>m_descSet<span class="operator">[</span>m_window<span class="operator">-</span><span class="operator">></span>currentFrame()<span class="operator">]</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> nullptr);
VkDeviceSize vbOffset <span class="operator">=</span> <span class="number">0</span>;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdBindVertexBuffers(cb<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_buf<span class="operator">,</span> <span class="operator">&</span>vbOffset);
VkViewport viewport;
viewport<span class="operator">.</span>x <span class="operator">=</span> viewport<span class="operator">.</span>y <span class="operator">=</span> <span class="number">0</span>;
viewport<span class="operator">.</span>width <span class="operator">=</span> sz<span class="operator">.</span>width();
viewport<span class="operator">.</span>height <span class="operator">=</span> sz<span class="operator">.</span>height();
viewport<span class="operator">.</span>minDepth <span class="operator">=</span> <span class="number">0</span>;
viewport<span class="operator">.</span>maxDepth <span class="operator">=</span> <span class="number">1</span>;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdSetViewport(cb<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>viewport);
VkRect2D scissor;
scissor<span class="operator">.</span>offset<span class="operator">.</span>x <span class="operator">=</span> scissor<span class="operator">.</span>offset<span class="operator">.</span>y <span class="operator">=</span> <span class="number">0</span>;
scissor<span class="operator">.</span>extent<span class="operator">.</span>width <span class="operator">=</span> viewport<span class="operator">.</span>width;
scissor<span class="operator">.</span>extent<span class="operator">.</span>height <span class="operator">=</span> viewport<span class="operator">.</span>height;
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdSetScissor(cb<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>scissor);
m_devFuncs<span class="operator">-</span><span class="operator">></span>vkCmdDraw(cb<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</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>
<!-- @@@hellovulkantexture/hellovulkantexture.cpp -->
</div>
</div>
</div>
</div>
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<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
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
d5e62c01ae8d1e579463c6a871dd44bf
>
files
>
1875
