qt 6.5.1 original

tests/manual/examples/vulkan/hellovulkantexture/CMakeLists.txt

@@ -0,0 +1,50 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(hellovulkantexture LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/vulkan/hellovulkantexture")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui)
+
+qt_standard_project_setup()
+
+qt_add_executable(hellovulkantexture
+    hellovulkantexture.cpp hellovulkantexture.h
+    main.cpp
+)
+
+set_target_properties(hellovulkantexture PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(hellovulkantexture PRIVATE
+    Qt6::Core
+    Qt6::Gui
+)
+
+# Resources:
+set(hellovulkantexture_resource_files
+    "qt256.png"
+    "texture_frag.spv"
+    "texture_vert.spv"
+)
+
+qt_add_resources(hellovulkantexture "hellovulkantexture"
+    PREFIX
+        "/"
+    FILES
+        ${hellovulkantexture_resource_files}
+)
+
+install(TARGETS hellovulkantexture
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

tests/manual/examples/vulkan/hellovulkantexture/hellovulkantexture.cpp

@@ -0,0 +1,792 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "hellovulkantexture.h"
+#include <QVulkanFunctions>
+#include <QCoreApplication>
+#include <QFile>
+
+// Use a triangle strip to get a quad.
+//
+// Note that the vertex data and the projection matrix assume OpenGL. With
+// Vulkan Y is negated in clip space and the near/far plane is at 0/1 instead
+// of -1/1. These will be corrected for by an extra transformation when
+// calculating the modelview-projection matrix.
+static float vertexData[] = { // Y up, front = CW
+    // x, y, z, u, v
+    -1, -1, 0, 0, 1,
+    -1,  1, 0, 0, 0,
+     1, -1, 0, 1, 1,
+     1,  1, 0, 1, 0
+};
+
+static const int UNIFORM_DATA_SIZE = 16 * sizeof(float);
+
+static inline VkDeviceSize aligned(VkDeviceSize v, VkDeviceSize byteAlign)
+{
+    return (v + byteAlign - 1) & ~(byteAlign - 1);
+}
+
+QVulkanWindowRenderer *VulkanWindow::createRenderer()
+{
+    return new VulkanRenderer(this);
+}
+
+VulkanRenderer::VulkanRenderer(QVulkanWindow *w)
+    : m_window(w)
+{
+}
+
+VkShaderModule VulkanRenderer::createShader(const QString &name)
+{
+    QFile file(name);
+    if (!file.open(QIODevice::ReadOnly)) {
+        qWarning("Failed to read shader %s", qPrintable(name));
+        return VK_NULL_HANDLE;
+    }
+    QByteArray blob = file.readAll();
+    file.close();
+
+    VkShaderModuleCreateInfo shaderInfo;
+    memset(&shaderInfo, 0, sizeof(shaderInfo));
+    shaderInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+    shaderInfo.codeSize = blob.size();
+    shaderInfo.pCode = reinterpret_cast<const uint32_t *>(blob.constData());
+    VkShaderModule shaderModule;
+    VkResult err = m_devFuncs->vkCreateShaderModule(m_window->device(), &shaderInfo, nullptr, &shaderModule);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to create shader module: %d", err);
+        return VK_NULL_HANDLE;
+    }
+
+    return shaderModule;
+}
+
+bool VulkanRenderer::createTexture(const QString &name)
+{
+    QImage img(name);
+    if (img.isNull()) {
+        qWarning("Failed to load image %s", qPrintable(name));
+        return false;
+    }
+
+    // Convert to byte ordered RGBA8. Use premultiplied alpha, see pColorBlendState in the pipeline.
+    img = img.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
+
+    QVulkanFunctions *f = m_window->vulkanInstance()->functions();
+    VkDevice dev = m_window->device();
+
+    const bool srgb = QCoreApplication::arguments().contains(QStringLiteral("--srgb"));
+    if (srgb)
+        qDebug("sRGB swapchain was requested, making texture sRGB too");
+
+    m_texFormat = srgb ? VK_FORMAT_R8G8B8A8_SRGB : VK_FORMAT_R8G8B8A8_UNORM;
+
+    // Now we can either map and copy the image data directly, or have to go
+    // through a staging buffer to copy and convert into the internal optimal
+    // tiling format.
+    VkFormatProperties props;
+    f->vkGetPhysicalDeviceFormatProperties(m_window->physicalDevice(), m_texFormat, &props);
+    const bool canSampleLinear = (props.linearTilingFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT);
+    const bool canSampleOptimal = (props.optimalTilingFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT);
+    if (!canSampleLinear && !canSampleOptimal) {
+        qWarning("Neither linear nor optimal image sampling is supported for RGBA8");
+        return false;
+    }
+
+    static bool alwaysStage = qEnvironmentVariableIntValue("QT_VK_FORCE_STAGE_TEX");
+
+    if (canSampleLinear && !alwaysStage) {
+        if (!createTextureImage(img.size(), &m_texImage, &m_texMem,
+                                VK_IMAGE_TILING_LINEAR, VK_IMAGE_USAGE_SAMPLED_BIT,
+                                m_window->hostVisibleMemoryIndex()))
+            return false;
+
+        if (!writeLinearImage(img, m_texImage, m_texMem))
+            return false;
+
+        m_texLayoutPending = true;
+    } else {
+        if (!createTextureImage(img.size(), &m_texStaging, &m_texStagingMem,
+                                VK_IMAGE_TILING_LINEAR, VK_IMAGE_USAGE_TRANSFER_SRC_BIT,
+                                m_window->hostVisibleMemoryIndex()))
+            return false;
+
+        if (!createTextureImage(img.size(), &m_texImage, &m_texMem,
+                                VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
+                                m_window->deviceLocalMemoryIndex()))
+            return false;
+
+        if (!writeLinearImage(img, m_texStaging, m_texStagingMem))
+            return false;
+
+        m_texStagingPending = true;
+    }
+
+    VkImageViewCreateInfo viewInfo;
+    memset(&viewInfo, 0, sizeof(viewInfo));
+    viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+    viewInfo.image = m_texImage;
+    viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
+    viewInfo.format = m_texFormat;
+    viewInfo.components.r = VK_COMPONENT_SWIZZLE_R;
+    viewInfo.components.g = VK_COMPONENT_SWIZZLE_G;
+    viewInfo.components.b = VK_COMPONENT_SWIZZLE_B;
+    viewInfo.components.a = VK_COMPONENT_SWIZZLE_A;
+    viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+    viewInfo.subresourceRange.levelCount = viewInfo.subresourceRange.layerCount = 1;
+
+    VkResult err = m_devFuncs->vkCreateImageView(dev, &viewInfo, nullptr, &m_texView);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to create image view for texture: %d", err);
+        return false;
+    }
+
+    m_texSize = img.size();
+
+    return true;
+}
+
+bool VulkanRenderer::createTextureImage(const QSize &size, VkImage *image, VkDeviceMemory *mem,
+                                        VkImageTiling tiling, VkImageUsageFlags usage, uint32_t memIndex)
+{
+    VkDevice dev = m_window->device();
+
+    VkImageCreateInfo imageInfo;
+    memset(&imageInfo, 0, sizeof(imageInfo));
+    imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
+    imageInfo.imageType = VK_IMAGE_TYPE_2D;
+    imageInfo.format = m_texFormat;
+    imageInfo.extent.width = size.width();
+    imageInfo.extent.height = size.height();
+    imageInfo.extent.depth = 1;
+    imageInfo.mipLevels = 1;
+    imageInfo.arrayLayers = 1;
+    imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
+    imageInfo.tiling = tiling;
+    imageInfo.usage = usage;
+    imageInfo.initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
+
+    VkResult err = m_devFuncs->vkCreateImage(dev, &imageInfo, nullptr, image);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to create linear image for texture: %d", err);
+        return false;
+    }
+
+    VkMemoryRequirements memReq;
+    m_devFuncs->vkGetImageMemoryRequirements(dev, *image, &memReq);
+
+    if (!(memReq.memoryTypeBits & (1 << memIndex))) {
+        VkPhysicalDeviceMemoryProperties physDevMemProps;
+        m_window->vulkanInstance()->functions()->vkGetPhysicalDeviceMemoryProperties(m_window->physicalDevice(), &physDevMemProps);
+        for (uint32_t i = 0; i < physDevMemProps.memoryTypeCount; ++i) {
+            if (!(memReq.memoryTypeBits & (1 << i)))
+                continue;
+            memIndex = i;
+        }
+    }
+
+    VkMemoryAllocateInfo allocInfo = {
+        VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
+        nullptr,
+        memReq.size,
+        memIndex
+    };
+    qDebug("allocating %u bytes for texture image", uint32_t(memReq.size));
+
+    err = m_devFuncs->vkAllocateMemory(dev, &allocInfo, nullptr, mem);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to allocate memory for linear image: %d", err);
+        return false;
+    }
+
+    err = m_devFuncs->vkBindImageMemory(dev, *image, *mem, 0);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to bind linear image memory: %d", err);
+        return false;
+    }
+
+    return true;
+}
+
+bool VulkanRenderer::writeLinearImage(const QImage &img, VkImage image, VkDeviceMemory memory)
+{
+    VkDevice dev = m_window->device();
+
+    VkImageSubresource subres = {
+        VK_IMAGE_ASPECT_COLOR_BIT,
+        0, // mip level
+        0
+    };
+    VkSubresourceLayout layout;
+    m_devFuncs->vkGetImageSubresourceLayout(dev, image, &subres, &layout);
+
+    uchar *p;
+    VkResult err = m_devFuncs->vkMapMemory(dev, memory, layout.offset, layout.size, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to map memory for linear image: %d", err);
+        return false;
+    }
+
+    for (int y = 0; y < img.height(); ++y) {
+        const uchar *line = img.constScanLine(y);
+        memcpy(p, line, img.width() * 4);
+        p += layout.rowPitch;
+    }
+
+    m_devFuncs->vkUnmapMemory(dev, memory);
+    return true;
+}
+
+void VulkanRenderer::ensureTexture()
+{
+    if (!m_texLayoutPending && !m_texStagingPending)
+        return;
+
+    Q_ASSERT(m_texLayoutPending != m_texStagingPending);
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+
+    VkImageMemoryBarrier barrier;
+    memset(&barrier, 0, sizeof(barrier));
+    barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+    barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+    barrier.subresourceRange.levelCount = barrier.subresourceRange.layerCount = 1;
+
+    if (m_texLayoutPending) {
+        m_texLayoutPending = false;
+
+        barrier.oldLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
+        barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        barrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
+        barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
+        barrier.image = m_texImage;
+
+        m_devFuncs->vkCmdPipelineBarrier(cb,
+                                VK_PIPELINE_STAGE_HOST_BIT,
+                                VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
+                                0, 0, nullptr, 0, nullptr,
+                                1, &barrier);
+    } else {
+        m_texStagingPending = false;
+
+        barrier.oldLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
+        barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
+        barrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
+        barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
+        barrier.image = m_texStaging;
+        m_devFuncs->vkCmdPipelineBarrier(cb,
+                                VK_PIPELINE_STAGE_HOST_BIT,
+                                VK_PIPELINE_STAGE_TRANSFER_BIT,
+                                0, 0, nullptr, 0, nullptr,
+                                1, &barrier);
+
+        barrier.oldLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
+        barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
+        barrier.srcAccessMask = 0;
+        barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+        barrier.image = m_texImage;
+        m_devFuncs->vkCmdPipelineBarrier(cb,
+                                VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+                                VK_PIPELINE_STAGE_TRANSFER_BIT,
+                                0, 0, nullptr, 0, nullptr,
+                                1, &barrier);
+
+        VkImageCopy copyInfo;
+        memset(&copyInfo, 0, sizeof(copyInfo));
+        copyInfo.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        copyInfo.srcSubresource.layerCount = 1;
+        copyInfo.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        copyInfo.dstSubresource.layerCount = 1;
+        copyInfo.extent.width = m_texSize.width();
+        copyInfo.extent.height = m_texSize.height();
+        copyInfo.extent.depth = 1;
+        m_devFuncs->vkCmdCopyImage(cb, m_texStaging, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
+                          m_texImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &copyInfo);
+
+        barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
+        barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+        barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
+        barrier.image = m_texImage;
+        m_devFuncs->vkCmdPipelineBarrier(cb,
+                                VK_PIPELINE_STAGE_TRANSFER_BIT,
+                                VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
+                                0, 0, nullptr, 0, nullptr,
+                                1, &barrier);
+    }
+}
+
+void VulkanRenderer::initResources()
+{
+    qDebug("initResources");
+
+    VkDevice dev = m_window->device();
+    m_devFuncs = m_window->vulkanInstance()->deviceFunctions(dev);
+
+    // The setup is similar to hellovulkantriangle. The difference is the
+    // presence of a second vertex attribute (texcoord), a sampler, and that we
+    // need blending.
+
+    const int concurrentFrameCount = m_window->concurrentFrameCount();
+    const VkPhysicalDeviceLimits *pdevLimits = &m_window->physicalDeviceProperties()->limits;
+    const VkDeviceSize uniAlign = pdevLimits->minUniformBufferOffsetAlignment;
+    qDebug("uniform buffer offset alignment is %u", (uint) uniAlign);
+    VkBufferCreateInfo bufInfo;
+    memset(&bufInfo, 0, sizeof(bufInfo));
+    bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    // Our internal layout is vertex, uniform, uniform, ... with each uniform buffer start offset aligned to uniAlign.
+    const VkDeviceSize vertexAllocSize = aligned(sizeof(vertexData), uniAlign);
+    const VkDeviceSize uniformAllocSize = aligned(UNIFORM_DATA_SIZE, uniAlign);
+    bufInfo.size = vertexAllocSize + concurrentFrameCount * uniformAllocSize;
+    bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+
+    VkResult err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_buf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create buffer: %d", err);
+
+    VkMemoryRequirements memReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_buf, &memReq);
+
+    VkMemoryAllocateInfo memAllocInfo = {
+        VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
+        nullptr,
+        memReq.size,
+        m_window->hostVisibleMemoryIndex()
+    };
+
+    err = m_devFuncs->vkAllocateMemory(dev, &memAllocInfo, nullptr, &m_bufMem);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to allocate memory: %d", err);
+
+    err = m_devFuncs->vkBindBufferMemory(dev, m_buf, m_bufMem, 0);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind buffer memory: %d", err);
+
+    quint8 *p;
+    err = m_devFuncs->vkMapMemory(dev, m_bufMem, 0, memReq.size, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    memcpy(p, vertexData, sizeof(vertexData));
+    QMatrix4x4 ident;
+    memset(m_uniformBufInfo, 0, sizeof(m_uniformBufInfo));
+    for (int i = 0; i < concurrentFrameCount; ++i) {
+        const VkDeviceSize offset = vertexAllocSize + i * uniformAllocSize;
+        memcpy(p + offset, ident.constData(), 16 * sizeof(float));
+        m_uniformBufInfo[i].buffer = m_buf;
+        m_uniformBufInfo[i].offset = offset;
+        m_uniformBufInfo[i].range = uniformAllocSize;
+    }
+    m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+
+    VkVertexInputBindingDescription vertexBindingDesc = {
+        0, // binding
+        5 * sizeof(float),
+        VK_VERTEX_INPUT_RATE_VERTEX
+    };
+    VkVertexInputAttributeDescription vertexAttrDesc[] = {
+        { // position
+            0, // location
+            0, // binding
+            VK_FORMAT_R32G32B32_SFLOAT,
+            0
+        },
+        { // texcoord
+            1,
+            0,
+            VK_FORMAT_R32G32_SFLOAT,
+            3 * sizeof(float)
+        }
+    };
+
+    VkPipelineVertexInputStateCreateInfo vertexInputInfo;
+    vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+    vertexInputInfo.pNext = nullptr;
+    vertexInputInfo.flags = 0;
+    vertexInputInfo.vertexBindingDescriptionCount = 1;
+    vertexInputInfo.pVertexBindingDescriptions = &vertexBindingDesc;
+    vertexInputInfo.vertexAttributeDescriptionCount = 2;
+    vertexInputInfo.pVertexAttributeDescriptions = vertexAttrDesc;
+
+    // Sampler.
+    VkSamplerCreateInfo samplerInfo;
+    memset(&samplerInfo, 0, sizeof(samplerInfo));
+    samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
+    samplerInfo.magFilter = VK_FILTER_NEAREST;
+    samplerInfo.minFilter = VK_FILTER_NEAREST;
+    samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+    samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+    samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+    samplerInfo.maxAnisotropy = 1.0f;
+    err = m_devFuncs->vkCreateSampler(dev, &samplerInfo, nullptr, &m_sampler);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create sampler: %d", err);
+
+    // Texture.
+    if (!createTexture(QStringLiteral(":/qt256.png")))
+        qFatal("Failed to create texture");
+
+    // Set up descriptor set and its layout.
+    VkDescriptorPoolSize descPoolSizes[2] = {
+        { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, uint32_t(concurrentFrameCount) },
+        { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, uint32_t(concurrentFrameCount) }
+    };
+    VkDescriptorPoolCreateInfo descPoolInfo;
+    memset(&descPoolInfo, 0, sizeof(descPoolInfo));
+    descPoolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+    descPoolInfo.maxSets = concurrentFrameCount;
+    descPoolInfo.poolSizeCount = 2;
+    descPoolInfo.pPoolSizes = descPoolSizes;
+    err = m_devFuncs->vkCreateDescriptorPool(dev, &descPoolInfo, nullptr, &m_descPool);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor pool: %d", err);
+
+    VkDescriptorSetLayoutBinding layoutBinding[2] =
+    {
+        {
+            0, // binding
+            VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
+            1, // descriptorCount
+            VK_SHADER_STAGE_VERTEX_BIT,
+            nullptr
+        },
+        {
+            1, // binding
+            VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+            1, // descriptorCount
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            nullptr
+        }
+    };
+    VkDescriptorSetLayoutCreateInfo descLayoutInfo = {
+        VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
+        nullptr,
+        0,
+        2, // bindingCount
+        layoutBinding
+    };
+    err = m_devFuncs->vkCreateDescriptorSetLayout(dev, &descLayoutInfo, nullptr, &m_descSetLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor set layout: %d", err);
+
+    for (int i = 0; i < concurrentFrameCount; ++i) {
+        VkDescriptorSetAllocateInfo descSetAllocInfo = {
+            VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
+            nullptr,
+            m_descPool,
+            1,
+            &m_descSetLayout
+        };
+        err = m_devFuncs->vkAllocateDescriptorSets(dev, &descSetAllocInfo, &m_descSet[i]);
+        if (err != VK_SUCCESS)
+            qFatal("Failed to allocate descriptor set: %d", err);
+
+        VkWriteDescriptorSet descWrite[2];
+        memset(descWrite, 0, sizeof(descWrite));
+        descWrite[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+        descWrite[0].dstSet = m_descSet[i];
+        descWrite[0].dstBinding = 0;
+        descWrite[0].descriptorCount = 1;
+        descWrite[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+        descWrite[0].pBufferInfo = &m_uniformBufInfo[i];
+
+        VkDescriptorImageInfo descImageInfo = {
+            m_sampler,
+            m_texView,
+            VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
+        };
+
+        descWrite[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+        descWrite[1].dstSet = m_descSet[i];
+        descWrite[1].dstBinding = 1;
+        descWrite[1].descriptorCount = 1;
+        descWrite[1].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+        descWrite[1].pImageInfo = &descImageInfo;
+
+        m_devFuncs->vkUpdateDescriptorSets(dev, 2, descWrite, 0, nullptr);
+    }
+
+    // Pipeline cache
+    VkPipelineCacheCreateInfo pipelineCacheInfo;
+    memset(&pipelineCacheInfo, 0, sizeof(pipelineCacheInfo));
+    pipelineCacheInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
+    err = m_devFuncs->vkCreatePipelineCache(dev, &pipelineCacheInfo, nullptr, &m_pipelineCache);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline cache: %d", err);
+
+    // Pipeline layout
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo;
+    memset(&pipelineLayoutInfo, 0, sizeof(pipelineLayoutInfo));
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.setLayoutCount = 1;
+    pipelineLayoutInfo.pSetLayouts = &m_descSetLayout;
+    err = m_devFuncs->vkCreatePipelineLayout(dev, &pipelineLayoutInfo, nullptr, &m_pipelineLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline layout: %d", err);
+
+    // Shaders
+    VkShaderModule vertShaderModule = createShader(QStringLiteral(":/texture_vert.spv"));
+    VkShaderModule fragShaderModule = createShader(QStringLiteral(":/texture_frag.spv"));
+
+    // Graphics pipeline
+    VkGraphicsPipelineCreateInfo pipelineInfo;
+    memset(&pipelineInfo, 0, sizeof(pipelineInfo));
+    pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+
+    VkPipelineShaderStageCreateInfo shaderStages[2] = {
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_VERTEX_BIT,
+            vertShaderModule,
+            "main",
+            nullptr
+        },
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            fragShaderModule,
+            "main",
+            nullptr
+        }
+    };
+    pipelineInfo.stageCount = 2;
+    pipelineInfo.pStages = shaderStages;
+
+    pipelineInfo.pVertexInputState = &vertexInputInfo;
+
+    VkPipelineInputAssemblyStateCreateInfo ia;
+    memset(&ia, 0, sizeof(ia));
+    ia.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+    ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
+    pipelineInfo.pInputAssemblyState = &ia;
+
+    // The viewport and scissor will be set dynamically via vkCmdSetViewport/Scissor.
+    // This way the pipeline does not need to be touched when resizing the window.
+    VkPipelineViewportStateCreateInfo vp;
+    memset(&vp, 0, sizeof(vp));
+    vp.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+    vp.viewportCount = 1;
+    vp.scissorCount = 1;
+    pipelineInfo.pViewportState = &vp;
+
+    VkPipelineRasterizationStateCreateInfo rs;
+    memset(&rs, 0, sizeof(rs));
+    rs.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+    rs.polygonMode = VK_POLYGON_MODE_FILL;
+    rs.cullMode = VK_CULL_MODE_BACK_BIT;
+    rs.frontFace = VK_FRONT_FACE_CLOCKWISE;
+    rs.lineWidth = 1.0f;
+    pipelineInfo.pRasterizationState = &rs;
+
+    VkPipelineMultisampleStateCreateInfo ms;
+    memset(&ms, 0, sizeof(ms));
+    ms.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+    ms.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
+    pipelineInfo.pMultisampleState = &ms;
+
+    VkPipelineDepthStencilStateCreateInfo ds;
+    memset(&ds, 0, sizeof(ds));
+    ds.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
+    ds.depthTestEnable = VK_TRUE;
+    ds.depthWriteEnable = VK_TRUE;
+    ds.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
+    pipelineInfo.pDepthStencilState = &ds;
+
+    VkPipelineColorBlendStateCreateInfo cb;
+    memset(&cb, 0, sizeof(cb));
+    cb.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+    // assume pre-multiplied alpha, blend, write out all of rgba
+    VkPipelineColorBlendAttachmentState att;
+    memset(&att, 0, sizeof(att));
+    att.colorWriteMask = 0xF;
+    att.blendEnable = VK_TRUE;
+    att.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
+    att.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
+    att.colorBlendOp = VK_BLEND_OP_ADD;
+    att.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
+    att.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
+    att.alphaBlendOp = VK_BLEND_OP_ADD;
+    cb.attachmentCount = 1;
+    cb.pAttachments = &att;
+    pipelineInfo.pColorBlendState = &cb;
+
+    VkDynamicState dynEnable[] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
+    VkPipelineDynamicStateCreateInfo dyn;
+    memset(&dyn, 0, sizeof(dyn));
+    dyn.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
+    dyn.dynamicStateCount = sizeof(dynEnable) / sizeof(VkDynamicState);
+    dyn.pDynamicStates = dynEnable;
+    pipelineInfo.pDynamicState = &dyn;
+
+    pipelineInfo.layout = m_pipelineLayout;
+    pipelineInfo.renderPass = m_window->defaultRenderPass();
+
+    err = m_devFuncs->vkCreateGraphicsPipelines(dev, m_pipelineCache, 1, &pipelineInfo, nullptr, &m_pipeline);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create graphics pipeline: %d", err);
+
+    if (vertShaderModule)
+        m_devFuncs->vkDestroyShaderModule(dev, vertShaderModule, nullptr);
+    if (fragShaderModule)
+        m_devFuncs->vkDestroyShaderModule(dev, fragShaderModule, nullptr);
+}
+
+void VulkanRenderer::initSwapChainResources()
+{
+    qDebug("initSwapChainResources");
+
+    // Projection matrix
+    m_proj = m_window->clipCorrectionMatrix(); // adjust for Vulkan-OpenGL clip space differences
+    const QSize sz = m_window->swapChainImageSize();
+    m_proj.perspective(45.0f, sz.width() / (float) sz.height(), 0.01f, 100.0f);
+    m_proj.translate(0, 0, -4);
+}
+
+void VulkanRenderer::releaseSwapChainResources()
+{
+    qDebug("releaseSwapChainResources");
+}
+
+void VulkanRenderer::releaseResources()
+{
+    qDebug("releaseResources");
+
+    VkDevice dev = m_window->device();
+
+    if (m_sampler) {
+        m_devFuncs->vkDestroySampler(dev, m_sampler, nullptr);
+        m_sampler = VK_NULL_HANDLE;
+    }
+
+    if (m_texStaging) {
+        m_devFuncs->vkDestroyImage(dev, m_texStaging, nullptr);
+        m_texStaging = VK_NULL_HANDLE;
+    }
+
+    if (m_texStagingMem) {
+        m_devFuncs->vkFreeMemory(dev, m_texStagingMem, nullptr);
+        m_texStagingMem = VK_NULL_HANDLE;
+    }
+
+    if (m_texView) {
+        m_devFuncs->vkDestroyImageView(dev, m_texView, nullptr);
+        m_texView = VK_NULL_HANDLE;
+    }
+
+    if (m_texImage) {
+        m_devFuncs->vkDestroyImage(dev, m_texImage, nullptr);
+        m_texImage = VK_NULL_HANDLE;
+    }
+
+    if (m_texMem) {
+        m_devFuncs->vkFreeMemory(dev, m_texMem, nullptr);
+        m_texMem = VK_NULL_HANDLE;
+    }
+
+    if (m_pipeline) {
+        m_devFuncs->vkDestroyPipeline(dev, m_pipeline, nullptr);
+        m_pipeline = VK_NULL_HANDLE;
+    }
+
+    if (m_pipelineLayout) {
+        m_devFuncs->vkDestroyPipelineLayout(dev, m_pipelineLayout, nullptr);
+        m_pipelineLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_pipelineCache) {
+        m_devFuncs->vkDestroyPipelineCache(dev, m_pipelineCache, nullptr);
+        m_pipelineCache = VK_NULL_HANDLE;
+    }
+
+    if (m_descSetLayout) {
+        m_devFuncs->vkDestroyDescriptorSetLayout(dev, m_descSetLayout, nullptr);
+        m_descSetLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_descPool) {
+        m_devFuncs->vkDestroyDescriptorPool(dev, m_descPool, nullptr);
+        m_descPool = VK_NULL_HANDLE;
+    }
+
+    if (m_buf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_buf, nullptr);
+        m_buf = VK_NULL_HANDLE;
+    }
+
+    if (m_bufMem) {
+        m_devFuncs->vkFreeMemory(dev, m_bufMem, nullptr);
+        m_bufMem = VK_NULL_HANDLE;
+    }
+}
+
+void VulkanRenderer::startNextFrame()
+{
+    VkDevice dev = m_window->device();
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+    const QSize sz = m_window->swapChainImageSize();
+
+    // Add the necessary barriers and do the host-linear -> device-optimal copy, if not yet done.
+    ensureTexture();
+
+    VkClearColorValue clearColor = {{ 0, 0, 0, 1 }};
+    VkClearDepthStencilValue clearDS = { 1, 0 };
+    VkClearValue clearValues[2];
+    memset(clearValues, 0, sizeof(clearValues));
+    clearValues[0].color = clearColor;
+    clearValues[1].depthStencil = clearDS;
+
+    VkRenderPassBeginInfo rpBeginInfo;
+    memset(&rpBeginInfo, 0, sizeof(rpBeginInfo));
+    rpBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+    rpBeginInfo.renderPass = m_window->defaultRenderPass();
+    rpBeginInfo.framebuffer = m_window->currentFramebuffer();
+    rpBeginInfo.renderArea.extent.width = sz.width();
+    rpBeginInfo.renderArea.extent.height = sz.height();
+    rpBeginInfo.clearValueCount = 2;
+    rpBeginInfo.pClearValues = clearValues;
+    VkCommandBuffer cmdBuf = m_window->currentCommandBuffer();
+    m_devFuncs->vkCmdBeginRenderPass(cmdBuf, &rpBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
+
+    quint8 *p;
+    VkResult err = m_devFuncs->vkMapMemory(dev, m_bufMem, m_uniformBufInfo[m_window->currentFrame()].offset,
+            UNIFORM_DATA_SIZE, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    QMatrix4x4 m = m_proj;
+    m.rotate(m_rotation, 0, 0, 1);
+    memcpy(p, m.constData(), 16 * sizeof(float));
+    m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+
+    // Not exactly a real animation system, just advance on every frame for now.
+    m_rotation += 1.0f;
+
+    m_devFuncs->vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipeline);
+    m_devFuncs->vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipelineLayout, 0, 1,
+                               &m_descSet[m_window->currentFrame()], 0, nullptr);
+    VkDeviceSize vbOffset = 0;
+    m_devFuncs->vkCmdBindVertexBuffers(cb, 0, 1, &m_buf, &vbOffset);
+
+    VkViewport viewport;
+    viewport.x = viewport.y = 0;
+    viewport.width = sz.width();
+    viewport.height = sz.height();
+    viewport.minDepth = 0;
+    viewport.maxDepth = 1;
+    m_devFuncs->vkCmdSetViewport(cb, 0, 1, &viewport);
+
+    VkRect2D scissor;
+    scissor.offset.x = scissor.offset.y = 0;
+    scissor.extent.width = viewport.width;
+    scissor.extent.height = viewport.height;
+    m_devFuncs->vkCmdSetScissor(cb, 0, 1, &scissor);
+
+    m_devFuncs->vkCmdDraw(cb, 4, 1, 0, 0);
+
+    m_devFuncs->vkCmdEndRenderPass(cmdBuf);
+
+    m_window->frameReady();
+    m_window->requestUpdate(); // render continuously, throttled by the presentation rate
+}

tests/manual/examples/vulkan/hellovulkantexture/hellovulkantexture.h

@@ -0,0 +1,66 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef HELLOVULKANTEXTURE_H
+#define HELLOVULKANTEXTURE_H
+
+#include <QVulkanWindow>
+#include <QImage>
+
+class VulkanRenderer : public QVulkanWindowRenderer
+{
+public:
+    VulkanRenderer(QVulkanWindow *w);
+
+    void initResources() override;
+    void initSwapChainResources() override;
+    void releaseSwapChainResources() override;
+    void releaseResources() override;
+
+    void startNextFrame() override;
+
+private:
+    VkShaderModule createShader(const QString &name);
+    bool createTexture(const QString &name);
+    bool createTextureImage(const QSize &size, VkImage *image, VkDeviceMemory *mem,
+                            VkImageTiling tiling, VkImageUsageFlags usage, uint32_t memIndex);
+    bool writeLinearImage(const QImage &img, VkImage image, VkDeviceMemory memory);
+    void ensureTexture();
+
+    QVulkanWindow *m_window;
+    QVulkanDeviceFunctions *m_devFuncs;
+
+    VkDeviceMemory m_bufMem = VK_NULL_HANDLE;
+    VkBuffer m_buf = VK_NULL_HANDLE;
+    VkDescriptorBufferInfo m_uniformBufInfo[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
+
+    VkDescriptorPool m_descPool = VK_NULL_HANDLE;
+    VkDescriptorSetLayout m_descSetLayout = VK_NULL_HANDLE;
+    VkDescriptorSet m_descSet[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
+
+    VkPipelineCache m_pipelineCache = VK_NULL_HANDLE;
+    VkPipelineLayout m_pipelineLayout = VK_NULL_HANDLE;
+    VkPipeline m_pipeline = VK_NULL_HANDLE;
+
+    VkSampler m_sampler = VK_NULL_HANDLE;
+    VkImage m_texImage = VK_NULL_HANDLE;
+    VkDeviceMemory m_texMem = VK_NULL_HANDLE;
+    bool m_texLayoutPending = false;
+    VkImageView m_texView = VK_NULL_HANDLE;
+    VkImage m_texStaging = VK_NULL_HANDLE;
+    VkDeviceMemory m_texStagingMem = VK_NULL_HANDLE;
+    bool m_texStagingPending = false;
+    QSize m_texSize;
+    VkFormat m_texFormat;
+
+    QMatrix4x4 m_proj;
+    float m_rotation = 0.0f;
+};
+
+class VulkanWindow : public QVulkanWindow
+{
+public:
+    QVulkanWindowRenderer *createRenderer() override;
+};
+
+#endif // HELLOVULKANTEXTURE_H

tests/manual/examples/vulkan/hellovulkantexture/hellovulkantexture.pro

@@ -0,0 +1,7 @@
+HEADERS += hellovulkantexture.h
+SOURCES += hellovulkantexture.cpp main.cpp
+RESOURCES += hellovulkantexture.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/vulkan/hellovulkantexture
+INSTALLS += target

tests/manual/examples/vulkan/hellovulkantexture/hellovulkantexture.qrc

@@ -0,0 +1,7 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>texture_vert.spv</file>
+    <file>texture_frag.spv</file>
+    <file>qt256.png</file>
+</qresource>
+</RCC>

tests/manual/examples/vulkan/hellovulkantexture/main.cpp

@@ -0,0 +1,32 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QGuiApplication>
+#include <QVulkanInstance>
+#include <QLoggingCategory>
+#include "hellovulkantexture.h"
+
+Q_LOGGING_CATEGORY(lcVk, "qt.vulkan")
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true"));
+
+    QVulkanInstance inst;
+    inst.setLayers({ "VK_LAYER_KHRONOS_validation" });
+
+    if (!inst.create())
+        qFatal("Failed to create Vulkan instance: %d", inst.errorCode());
+
+    VulkanWindow w;
+    w.setVulkanInstance(&inst);
+    if (QCoreApplication::arguments().contains(QStringLiteral("--srgb")))
+        w.setPreferredColorFormats(QList<VkFormat>() << VK_FORMAT_B8G8R8A8_SRGB);
+
+    w.resize(1024, 768);
+    w.show();
+
+    return app.exec();
+}

tests/manual/examples/vulkan/hellovulkantexture/texture.frag

@@ -0,0 +1,12 @@
+#version 440
+
+layout(location = 0) in vec2 v_texcoord;
+
+layout(location = 0) out vec4 fragColor;
+
+layout(binding = 1) uniform sampler2D tex;
+
+void main()
+{
+    fragColor = texture(tex, v_texcoord);
+}

tests/manual/examples/vulkan/hellovulkantexture/texture.vert

@@ -0,0 +1,18 @@
+#version 440
+
+layout(location = 0) in vec4 position;
+layout(location = 1) in vec2 texcoord;
+
+layout(location = 0) out vec2 v_texcoord;
+
+layout(std140, binding = 0) uniform buf {
+    mat4 mvp;
+} ubuf;
+
+out gl_PerVertex { vec4 gl_Position; };
+
+void main()
+{
+    v_texcoord = texcoord;
+    gl_Position = ubuf.mvp * position;
+}