やっていくVulkan入門

5-1. 頂点データの用意

この節では前準備として、シェーダに与えるデータ内容の準備をします。

まずは今まで使っていたシェーダのコードをあらためて見てみましょう。

#version 450
#extension GL_ARB_separate_shader_objects : enable

void main() {
    if(gl_VertexIndex == 0)
    {
        gl_Position = vec4(0.0, -0.5, 0.0, 1.0);
    }
    else if(gl_VertexIndex == 1)
    {
        gl_Position = vec4(0.5, 0.5, 0.0, 1.0);
    }
    else if(gl_VertexIndex == 2)
    {
        gl_Position = vec4(-0.5, 0.5, 0.0, 1.0);
    }
}

gl_VertexIndexというのは頂点の番号です。今まではこれだけを頼りに無理やり頂点の座標を出力していました。これからは外部からデータがもらえるので、頂点番号などを参照しなくてもよくなります。

新しい頂点シェーダはこちらです。

#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(location = 0) in vec2 inPos;

void main() {
    gl_Position = vec4(inPos, 0.0, 1.0);
}

layout(location = 0) in vec2 inPos; という記述が増えていますね。これは2次元ベクトル型のinPosという変数を受け取るという意味です。 ここに適宜頂点データが入ってきます。というか、入ってくるようにします。

以前も説明した通り頂点シェーダは頂点の数だけ実行されるプログラムです。それぞれの頂点の演算ごとに、それぞれの頂点の座標データがinPosへ入ってきます。0番目の頂点の演算時は0番目の頂点の情報が、1番目の頂点の演算時は1番目の頂点の情報が入ってきます。そのデータを使ってgl_Positionを出しているわけです。これでもうシェーダ内で頂点番号などを考える必要はありませんね。

さて、inPosに入れるデータを準備するのも勿論我々です。inPosにはどんなデータが入ってくればいいか考えてみましょう。

前のコードと同じ出力をするためには、inPosに以下のデータを与える必要があります。

  • 0番目→(0.0, -0.5)
  • 1番目→(0.5, 0.5)
  • 2番目→(-0.5, 0.5)

このようにデータを与えれば、各頂点では前と同じく以下のような座標を出力してくれますね。

  • 0番目→ gl_Position = vec4(inPos, 0.0, 1.0) → (0.0, -0.5, 0.0, 1.0)
  • 1番目→ gl_Position = vec4(inPos, 0.0, 1.0) → (0.5, 0.5, 0.0, 1.0)
  • 2番目→ gl_Position = vec4(inPos, 0.0, 1.0) → (-0.5, 0.5, 0.0, 1.0)

頂点データを準備します。とりあえず適当な変数配列を作ってそこに格納してあげましょう。

struct Vertex {
    float x, y;
};

std::vector<Vertex> vertices = {
    Vertex{ 0.0f, -0.5f },
    Vertex{ 0.5f,  0.5f },
    Vertex{-0.5f,  0.5f },
};

後々便利なのでstd::vectorにしました。

この節では新しい頂点シェーダのコード、および頂点のデータを用意しました。

次節では頂点データをシェーダに渡すためのバッファを作成します。

注意ですが、4章までのメインプログラムのコードはまだ今回のシェーダのコードと組み合わせてはいけません。エラーが出ます。4章までのコードにはシェーダにデータを与えるような仕組みは無いためです。

今回は説明のため先にシェーダのコードを示しました。5-5節までこのシェーダのコードを使うのは待ってください。

この節のコード 
#include <iostream>
#include <fstream>
#include <filesystem>
#include <vulkan/vulkan.hpp>
#include <GLFW/glfw3.h>

const uint32_t screenWidth = 640;
const uint32_t screenHeight = 480;

struct Vertex {
    float x, y;
};

std::vector<Vertex> vertices = {
    Vertex{ 0.0f, -0.5f },
    Vertex{ 0.5f,  0.5f },
    Vertex{-0.5f,  0.5f },
};

int main() {
    if (!glfwInit())
        return -1;

    uint32_t requiredExtensionsCount;
    const char** requiredExtensions = glfwGetRequiredInstanceExtensions(&requiredExtensionsCount);

    vk::InstanceCreateInfo createInfo;
    createInfo.enabledExtensionCount = requiredExtensionsCount;
    createInfo.ppEnabledExtensionNames = requiredExtensions;

    vk::UniqueInstance instance;
    instance = vk::createInstanceUnique(createInfo);

    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
    GLFWwindow* window;
    window = glfwCreateWindow(screenWidth, screenHeight, "GLFW Test Window", NULL, NULL);
    if (!window) {
        const char* err;
        glfwGetError(&err);
        std::cout << err << std::endl;
        glfwTerminate();
        return -1;
    }

    VkSurfaceKHR c_surface;
    auto result = glfwCreateWindowSurface(instance.get(), window, nullptr, &c_surface);
    if (result != VK_SUCCESS) {
        const char* err;
        glfwGetError(&err);
        std::cout << err << std::endl;
        glfwTerminate();
        return -1;
    }
    vk::UniqueSurfaceKHR surface{ c_surface, instance.get() };

    std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();

    vk::PhysicalDevice physicalDevice;
    bool existsSuitablePhysicalDevice = false;
    uint32_t graphicsQueueFamilyIndex;

    for (size_t i = 0; i < physicalDevices.size(); i++) {
        std::vector<vk::QueueFamilyProperties> queueProps = physicalDevices[i].getQueueFamilyProperties();
        bool existsGraphicsQueue = false;

        for (size_t j = 0; j < queueProps.size(); j++) {
            if (queueProps[j].queueFlags & vk::QueueFlagBits::eGraphics &&
                physicalDevices[i].getSurfaceSupportKHR(j, surface.get())) {
                existsGraphicsQueue = true;
                graphicsQueueFamilyIndex = j;
                break;
            }
        }

        std::vector<vk::ExtensionProperties> extProps = physicalDevices[i].enumerateDeviceExtensionProperties();
        bool supportsSwapchainExtension = false;

        for (size_t j = 0; j < extProps.size(); j++) {
            if (std::string_view(extProps[j].extensionName.data()) == VK_KHR_SWAPCHAIN_EXTENSION_NAME) {
                supportsSwapchainExtension = true;
                break;
            }
        }

        if (existsGraphicsQueue && supportsSwapchainExtension) {
            physicalDevice = physicalDevices[i];
            existsSuitablePhysicalDevice = true;
            break;
        }
    }

    if (!existsSuitablePhysicalDevice) {
        std::cerr << "使用可能な物理デバイスがありません。" << std::endl;
        return -1;
    }

    vk::DeviceCreateInfo devCreateInfo;

    auto devRequiredExtensions = { VK_KHR_SWAPCHAIN_EXTENSION_NAME };

    devCreateInfo.enabledExtensionCount = devRequiredExtensions.size();
    devCreateInfo.ppEnabledExtensionNames = devRequiredExtensions.begin();

    vk::DeviceQueueCreateInfo queueCreateInfo[1];
    queueCreateInfo[0].queueFamilyIndex = graphicsQueueFamilyIndex;
    queueCreateInfo[0].queueCount = 1;

    float queuePriorities[1] = { 1.0 };

    queueCreateInfo[0].pQueuePriorities = queuePriorities;

    devCreateInfo.pQueueCreateInfos = queueCreateInfo;
    devCreateInfo.queueCreateInfoCount = 1;

    vk::UniqueDevice device = physicalDevice.createDeviceUnique(devCreateInfo);

    vk::Queue graphicsQueue = device->getQueue(graphicsQueueFamilyIndex, 0);

    std::vector<vk::SurfaceFormatKHR> surfaceFormats = physicalDevice.getSurfaceFormatsKHR(surface.get());
    std::vector<vk::PresentModeKHR> surfacePresentModes = physicalDevice.getSurfacePresentModesKHR(surface.get());

    vk::SurfaceFormatKHR swapchainFormat = surfaceFormats[0];
    vk::PresentModeKHR swapchainPresentMode = surfacePresentModes[0];

    vk::AttachmentDescription attachments[1];
    attachments[0].format = swapchainFormat.format;
    attachments[0].samples = vk::SampleCountFlagBits::e1;
    attachments[0].loadOp = vk::AttachmentLoadOp::eClear;
    attachments[0].storeOp = vk::AttachmentStoreOp::eStore;
    attachments[0].stencilLoadOp = vk::AttachmentLoadOp::eDontCare;
    attachments[0].stencilStoreOp = vk::AttachmentStoreOp::eDontCare;
    attachments[0].initialLayout = vk::ImageLayout::eUndefined;
    attachments[0].finalLayout = vk::ImageLayout::ePresentSrcKHR;

    vk::AttachmentReference subpass0_attachmentRefs[1];
    subpass0_attachmentRefs[0].attachment = 0;
    subpass0_attachmentRefs[0].layout = vk::ImageLayout::eColorAttachmentOptimal;

    vk::SubpassDescription subpasses[1];
    subpasses[0].pipelineBindPoint = vk::PipelineBindPoint::eGraphics;
    subpasses[0].colorAttachmentCount = 1;
    subpasses[0].pColorAttachments = subpass0_attachmentRefs;

    vk::RenderPassCreateInfo renderpassCreateInfo;
    renderpassCreateInfo.attachmentCount = 1;
    renderpassCreateInfo.pAttachments = attachments;
    renderpassCreateInfo.subpassCount = 1;
    renderpassCreateInfo.pSubpasses = subpasses;
    renderpassCreateInfo.dependencyCount = 0;
    renderpassCreateInfo.pDependencies = nullptr;

    vk::UniqueRenderPass renderpass = device->createRenderPassUnique(renderpassCreateInfo);

    vk::Viewport viewports[1];
    viewports[0].x = 0.0;
    viewports[0].y = 0.0;
    viewports[0].minDepth = 0.0;
    viewports[0].maxDepth = 1.0;
    viewports[0].width = screenWidth;
    viewports[0].height = screenHeight;

    vk::Rect2D scissors[1];
    scissors[0].offset = vk::Offset2D{ 0, 0 };
    scissors[0].extent = vk::Extent2D{ screenWidth, screenHeight };

    vk::PipelineViewportStateCreateInfo viewportState;
    viewportState.viewportCount = 1;
    viewportState.pViewports = viewports;
    viewportState.scissorCount = 1;
    viewportState.pScissors = scissors;

    vk::PipelineVertexInputStateCreateInfo vertexInputInfo;
    vertexInputInfo.vertexAttributeDescriptionCount = 0;
    vertexInputInfo.pVertexAttributeDescriptions = nullptr;
    vertexInputInfo.vertexBindingDescriptionCount = 0;
    vertexInputInfo.pVertexBindingDescriptions = nullptr;

    vk::PipelineInputAssemblyStateCreateInfo inputAssembly;
    inputAssembly.topology = vk::PrimitiveTopology::eTriangleList;
    inputAssembly.primitiveRestartEnable = false;

    vk::PipelineRasterizationStateCreateInfo rasterizer;
    rasterizer.depthClampEnable = false;
    rasterizer.rasterizerDiscardEnable = false;
    rasterizer.polygonMode = vk::PolygonMode::eFill;
    rasterizer.lineWidth = 1.0f;
    rasterizer.cullMode = vk::CullModeFlagBits::eBack;
    rasterizer.frontFace = vk::FrontFace::eClockwise;
    rasterizer.depthBiasEnable = false;

    vk::PipelineMultisampleStateCreateInfo multisample;
    multisample.sampleShadingEnable = false;
    multisample.rasterizationSamples = vk::SampleCountFlagBits::e1;

    vk::PipelineColorBlendAttachmentState blendattachment[1];
    blendattachment[0].colorWriteMask =
        vk::ColorComponentFlagBits::eA |
        vk::ColorComponentFlagBits::eR |
        vk::ColorComponentFlagBits::eG |
        vk::ColorComponentFlagBits::eB;
    blendattachment[0].blendEnable = false;

    vk::PipelineColorBlendStateCreateInfo blend;
    blend.logicOpEnable = false;
    blend.attachmentCount = 1;
    blend.pAttachments = blendattachment;

    vk::PipelineLayoutCreateInfo layoutCreateInfo;
    layoutCreateInfo.setLayoutCount = 0;
    layoutCreateInfo.pSetLayouts = nullptr;

    vk::UniquePipelineLayout pipelineLayout = device->createPipelineLayoutUnique(layoutCreateInfo);

    size_t vertSpvFileSz = std::filesystem::file_size("shader.vert.spv");

    std::ifstream vertSpvFile("shader.vert.spv", std::ios_base::binary);

    std::vector<char> vertSpvFileData(vertSpvFileSz);
    vertSpvFile.read(vertSpvFileData.data(), vertSpvFileSz);

    vk::ShaderModuleCreateInfo vertShaderCreateInfo;
    vertShaderCreateInfo.codeSize = vertSpvFileSz;
    vertShaderCreateInfo.pCode = reinterpret_cast<const uint32_t*>(vertSpvFileData.data());

    vk::UniqueShaderModule vertShader = device->createShaderModuleUnique(vertShaderCreateInfo);

    size_t fragSpvFileSz = std::filesystem::file_size("shader.frag.spv");

    std::ifstream fragSpvFile("shader.frag.spv", std::ios_base::binary);

    std::vector<char> fragSpvFileData(fragSpvFileSz);
    fragSpvFile.read(fragSpvFileData.data(), fragSpvFileSz);

    vk::ShaderModuleCreateInfo fragShaderCreateInfo;
    fragShaderCreateInfo.codeSize = fragSpvFileSz;
    fragShaderCreateInfo.pCode = reinterpret_cast<const uint32_t*>(fragSpvFileData.data());

    vk::UniqueShaderModule fragShader = device->createShaderModuleUnique(fragShaderCreateInfo);

    vk::PipelineShaderStageCreateInfo shaderStage[2];
    shaderStage[0].stage = vk::ShaderStageFlagBits::eVertex;
    shaderStage[0].module = vertShader.get();
    shaderStage[0].pName = "main";
    shaderStage[1].stage = vk::ShaderStageFlagBits::eFragment;
    shaderStage[1].module = fragShader.get();
    shaderStage[1].pName = "main";

    vk::GraphicsPipelineCreateInfo pipelineCreateInfo;
    pipelineCreateInfo.pViewportState = &viewportState;
    pipelineCreateInfo.pVertexInputState = &vertexInputInfo;
    pipelineCreateInfo.pInputAssemblyState = &inputAssembly;
    pipelineCreateInfo.pRasterizationState = &rasterizer;
    pipelineCreateInfo.pMultisampleState = &multisample;
    pipelineCreateInfo.pColorBlendState = &blend;
    pipelineCreateInfo.layout = pipelineLayout.get();
    pipelineCreateInfo.renderPass = renderpass.get();
    pipelineCreateInfo.subpass = 0;
    pipelineCreateInfo.stageCount = 2;
    pipelineCreateInfo.pStages = shaderStage;

    vk::UniquePipeline pipeline = device->createGraphicsPipelineUnique(nullptr, pipelineCreateInfo).value;

    vk::UniqueSwapchainKHR swapchain;
    std::vector<vk::Image> swapchainImages;
    std::vector<vk::UniqueImageView> swapchainImageViews;
    std::vector<vk::UniqueFramebuffer> swapchainFramebufs;

    auto recreateSwapchain = [&](){
        swapchainFramebufs.clear();
        swapchainImageViews.clear();
        swapchainImages.clear();
        swapchain.reset();

        vk::SurfaceCapabilitiesKHR surfaceCapabilities = physicalDevice.getSurfaceCapabilitiesKHR(surface.get());

        vk::SwapchainCreateInfoKHR swapchainCreateInfo;
        swapchainCreateInfo.surface = surface.get();
        swapchainCreateInfo.minImageCount = surfaceCapabilities.minImageCount + 1;
        swapchainCreateInfo.imageFormat = swapchainFormat.format;
        swapchainCreateInfo.imageColorSpace = swapchainFormat.colorSpace;
        swapchainCreateInfo.imageExtent = surfaceCapabilities.currentExtent;
        swapchainCreateInfo.imageArrayLayers = 1;
        swapchainCreateInfo.imageUsage = vk::ImageUsageFlagBits::eColorAttachment;
        swapchainCreateInfo.imageSharingMode = vk::SharingMode::eExclusive;
        swapchainCreateInfo.preTransform = surfaceCapabilities.currentTransform;
        swapchainCreateInfo.presentMode = swapchainPresentMode;
        swapchainCreateInfo.clipped = VK_TRUE;

        swapchain = device->createSwapchainKHRUnique(swapchainCreateInfo);

        swapchainImages = device->getSwapchainImagesKHR(swapchain.get());

        swapchainImageViews.resize(swapchainImages.size());

        for (size_t i = 0; i < swapchainImages.size(); i++) {
            vk::ImageViewCreateInfo imgViewCreateInfo;
            imgViewCreateInfo.image = swapchainImages[i];
            imgViewCreateInfo.viewType = vk::ImageViewType::e2D;
            imgViewCreateInfo.format = swapchainFormat.format;
            imgViewCreateInfo.components.r = vk::ComponentSwizzle::eIdentity;
            imgViewCreateInfo.components.g = vk::ComponentSwizzle::eIdentity;
            imgViewCreateInfo.components.b = vk::ComponentSwizzle::eIdentity;
            imgViewCreateInfo.components.a = vk::ComponentSwizzle::eIdentity;
            imgViewCreateInfo.subresourceRange.aspectMask = vk::ImageAspectFlagBits::eColor;
            imgViewCreateInfo.subresourceRange.baseMipLevel = 0;
            imgViewCreateInfo.subresourceRange.levelCount = 1;
            imgViewCreateInfo.subresourceRange.baseArrayLayer = 0;
            imgViewCreateInfo.subresourceRange.layerCount = 1;

            swapchainImageViews[i] = device->createImageViewUnique(imgViewCreateInfo);
        }

        swapchainFramebufs.resize(swapchainImages.size());

        for (size_t i = 0; i < swapchainImages.size(); i++) {
            vk::ImageView frameBufAttachments[1];
            frameBufAttachments[0] = swapchainImageViews[i].get();

            vk::FramebufferCreateInfo frameBufCreateInfo;
            frameBufCreateInfo.width = surfaceCapabilities.currentExtent.width;
            frameBufCreateInfo.height = surfaceCapabilities.currentExtent.height;
            frameBufCreateInfo.layers = 1;
            frameBufCreateInfo.renderPass = renderpass.get();
            frameBufCreateInfo.attachmentCount = 1;
            frameBufCreateInfo.pAttachments = frameBufAttachments;

            swapchainFramebufs[i] = device->createFramebufferUnique(frameBufCreateInfo);
        }
    };

    recreateSwapchain();

    vk::CommandPoolCreateInfo cmdPoolCreateInfo;
    cmdPoolCreateInfo.queueFamilyIndex = graphicsQueueFamilyIndex;
    cmdPoolCreateInfo.flags = vk::CommandPoolCreateFlagBits::eResetCommandBuffer;
    vk::UniqueCommandPool cmdPool = device->createCommandPoolUnique(cmdPoolCreateInfo);

    vk::CommandBufferAllocateInfo cmdBufAllocInfo;
    cmdBufAllocInfo.commandPool = cmdPool.get();
    cmdBufAllocInfo.commandBufferCount = 1;
    cmdBufAllocInfo.level = vk::CommandBufferLevel::ePrimary;
    std::vector<vk::UniqueCommandBuffer> cmdBufs =
        device->allocateCommandBuffersUnique(cmdBufAllocInfo);
        
    vk::SemaphoreCreateInfo semaphoreCreateInfo;

    vk::UniqueSemaphore swapchainImgSemaphore, imgRenderedSemaphore;
    swapchainImgSemaphore = device->createSemaphoreUnique(semaphoreCreateInfo);
    imgRenderedSemaphore = device->createSemaphoreUnique(semaphoreCreateInfo);
    
    vk::FenceCreateInfo fenceCreateInfo;
    fenceCreateInfo.flags = vk::FenceCreateFlagBits::eSignaled;

    vk::UniqueFence imgRenderedFence = device->createFenceUnique(fenceCreateInfo);

    while (!glfwWindowShouldClose(window)) {
        glfwPollEvents();

        device->waitForFences({ imgRenderedFence.get()}, VK_TRUE, UINT64_MAX);

        vk::ResultValue acquireImgResult = device->acquireNextImageKHR(swapchain.get(), 1'000'000'000, swapchainImgSemaphore.get());
        if(acquireImgResult.result == vk::Result::eSuboptimalKHR || acquireImgResult.result == vk::Result::eErrorOutOfDateKHR) {
            std::cerr << "スワップチェーンを再作成します。" << std::endl;
            recreateSwapchain();
            continue;
        }
        if (acquireImgResult.result != vk::Result::eSuccess) {
            std::cerr << "次フレームの取得に失敗しました。" << std::endl;
            return -1;
        }
        device->resetFences({ imgRenderedFence.get() });

        uint32_t imgIndex = acquireImgResult.value;

        cmdBufs[0]->reset();

        vk::CommandBufferBeginInfo cmdBeginInfo;
        cmdBufs[0]->begin(cmdBeginInfo);

        vk::ClearValue clearVal[1];
        clearVal[0].color.float32[0] = 0.0f;
        clearVal[0].color.float32[1] = 0.0f;
        clearVal[0].color.float32[2] = 0.0f;
        clearVal[0].color.float32[3] = 1.0f;

        vk::RenderPassBeginInfo renderpassBeginInfo;
        renderpassBeginInfo.renderPass = renderpass.get();
        renderpassBeginInfo.framebuffer = swapchainFramebufs[imgIndex].get();
        renderpassBeginInfo.renderArea = vk::Rect2D({ 0,0 }, { screenWidth, screenHeight });
        renderpassBeginInfo.clearValueCount = 1;
        renderpassBeginInfo.pClearValues = clearVal;

        cmdBufs[0]->beginRenderPass(renderpassBeginInfo, vk::SubpassContents::eInline);

        cmdBufs[0]->bindPipeline(vk::PipelineBindPoint::eGraphics, pipeline.get());
        cmdBufs[0]->draw(3, 1, 0, 0);

        cmdBufs[0]->endRenderPass();

        cmdBufs[0]->end();

        vk::CommandBuffer submitCmdBuf[1] = { cmdBufs[0].get() };
        vk::SubmitInfo submitInfo;
        submitInfo.commandBufferCount = 1;
        submitInfo.pCommandBuffers = submitCmdBuf;

        vk::Semaphore renderwaitSemaphores[] = { swapchainImgSemaphore.get() };
        vk::PipelineStageFlags renderwaitStages[] = { vk::PipelineStageFlagBits::eColorAttachmentOutput };
        submitInfo.waitSemaphoreCount = 1;
        submitInfo.pWaitSemaphores = renderwaitSemaphores;
        submitInfo.pWaitDstStageMask = renderwaitStages;

        vk::Semaphore renderSignalSemaphores[] = { imgRenderedSemaphore.get() };
        submitInfo.signalSemaphoreCount = 1;
        submitInfo.pSignalSemaphores = renderSignalSemaphores;

        graphicsQueue.submit({ submitInfo }, imgRenderedFence.get());

        vk::PresentInfoKHR presentInfo;

        auto presentSwapchains = { swapchain.get() };
        auto imgIndices = { imgIndex };

        presentInfo.swapchainCount = presentSwapchains.size();
        presentInfo.pSwapchains = presentSwapchains.begin();
        presentInfo.pImageIndices = imgIndices.begin();

        vk::Semaphore presenWaitSemaphores[] = { imgRenderedSemaphore.get() };
        presentInfo.waitSemaphoreCount = 1;
        presentInfo.pWaitSemaphores = presenWaitSemaphores;

        graphicsQueue.presentKHR(presentInfo);
    }

    graphicsQueue.waitIdle();
    glfwTerminate();
    return 0;
}

#version 450
#extension GL_ARB_separate_shader_objects : enable

void main() {
    if(gl_VertexIndex == 0) {
        gl_Position = vec4(0.0, -0.5, 0.0, 1.0);
    } else if(gl_VertexIndex == 1) {
        gl_Position = vec4(0.5, 0.5, 0.0, 1.0);
    } else if(gl_VertexIndex == 2) {
        gl_Position = vec4(-0.5, 0.5, 0.0, 1.0);
    }
}

#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(location = 0) out vec4 outColor;

void main() {
    outColor = vec4(1.0, 0.0, 0.0, 1.0);
}

cmake_minimum_required(VERSION 3.22)

project(vulkan-test)

set(CMAKE_CXX_STANDARD 17)

add_executable(app main.cpp)

find_package(Vulkan REQUIRED)
target_include_directories(app PRIVATE ${Vulkan_INCLUDE_DIRS})
target_link_libraries(app PRIVATE ${Vulkan_LIBRARIES})

find_package(glfw3 CONFIG REQUIRED)
target_link_libraries(app PRIVATE glfw)

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