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Diffstat (limited to 'tests/manual/qvulkaninstance/main.cpp')
| -rw-r--r-- | tests/manual/qvulkaninstance/main.cpp | 713 |
1 files changed, 713 insertions, 0 deletions
diff --git a/tests/manual/qvulkaninstance/main.cpp b/tests/manual/qvulkaninstance/main.cpp new file mode 100644 index 0000000000..9b5f0ad072 --- /dev/null +++ b/tests/manual/qvulkaninstance/main.cpp @@ -0,0 +1,713 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QGuiApplication> +#include <QVulkanInstance> +#include <QVulkanFunctions> +#include <QWindow> +#include <QLoggingCategory> +#include <qevent.h> + +static const int SWAPCHAIN_BUFFER_COUNT = 2; +static const int FRAME_LAG = 2; + +class VWindow : public QWindow +{ +public: + VWindow() { setSurfaceType(VulkanSurface); } + ~VWindow() { releaseResources(); } + +private: + void exposeEvent(QExposeEvent *) override; + void resizeEvent(QResizeEvent *) override; + bool event(QEvent *) override; + + void init(); + void releaseResources(); + void recreateSwapChain(); + void createDefaultRenderPass(); + void releaseSwapChain(); + void render(); + void buildDrawCalls(); + + bool m_inited = false; + VkSurfaceKHR m_vkSurface; + VkPhysicalDevice m_vkPhysDev; + VkPhysicalDeviceProperties m_physDevProps; + VkDevice m_vkDev = 0; + QVulkanDeviceFunctions *m_devFuncs; + VkQueue m_vkGfxQueue; + VkQueue m_vkPresQueue; + VkCommandPool m_vkCmdPool = 0; + + PFN_vkCreateSwapchainKHR m_vkCreateSwapchainKHR = nullptr; + PFN_vkDestroySwapchainKHR m_vkDestroySwapchainKHR; + PFN_vkGetSwapchainImagesKHR m_vkGetSwapchainImagesKHR; + PFN_vkAcquireNextImageKHR m_vkAcquireNextImageKHR; + PFN_vkQueuePresentKHR m_vkQueuePresentKHR; + PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR m_vkGetPhysicalDeviceSurfaceCapabilitiesKHR; + PFN_vkGetPhysicalDeviceSurfaceFormatsKHR m_vkGetPhysicalDeviceSurfaceFormatsKHR; + + QSize m_swapChainImageSize; + VkFormat m_colorFormat; + VkSwapchainKHR m_swapChain = 0; + uint32_t m_swapChainBufferCount = 0; + + struct ImageResources { + VkImage image = 0; + VkImageView imageView = 0; + VkCommandBuffer cmdBuf = 0; + VkFence cmdFence = 0; + bool cmdFenceWaitable = false; + VkFramebuffer fb = 0; + } m_imageRes[SWAPCHAIN_BUFFER_COUNT]; + + uint32_t m_currentImage; + + struct FrameResources { + VkFence fence = 0; + bool fenceWaitable = false; + VkSemaphore imageSem = 0; + VkSemaphore drawSem = 0; + } m_frameRes[FRAME_LAG]; + + uint32_t m_currentFrame; + + VkRenderPass m_defaultRenderPass = 0; +}; + +void VWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed() && !m_inited) { + qDebug("initializing"); + m_inited = true; + init(); + recreateSwapChain(); + render(); + } + + // Release everything when unexposed - the meaning of which is platform specific. + // Can be essential on mobile, to release resources while in background. +#if 1 + if (!isExposed() && m_inited) { + m_inited = false; + releaseSwapChain(); + releaseResources(); + } +#endif +} + +void VWindow::resizeEvent(QResizeEvent *) +{ + // Nothing to do here - recreating the swapchain is handled in render(), + // in fact calling recreateSwapChain() from here leads to problems. +} + +bool VWindow::event(QEvent *e) +{ + switch (e->type()) { + case QEvent::UpdateRequest: + render(); + break; + + // Now the fun part: the swapchain must be destroyed before the surface as per + // spec. This is not ideal for us because the surface is managed by the + // QPlatformWindow which may be gone already when the unexpose comes, making the + // validation layer scream. The solution is to listen to the PlatformSurface events. + case QEvent::PlatformSurface: + if (static_cast<QPlatformSurfaceEvent *>(e)->surfaceEventType() == QPlatformSurfaceEvent::SurfaceAboutToBeDestroyed) + releaseSwapChain(); + break; + + default: + break; + } + + return QWindow::event(e); +} + +void VWindow::init() +{ + m_vkSurface = QVulkanInstance::surfaceForWindow(this); + if (!m_vkSurface) + qFatal("Failed to get surface for window"); + + QVulkanInstance *inst = vulkanInstance(); + QVulkanFunctions *f = inst->functions(); + uint32_t devCount = 0; + f->vkEnumeratePhysicalDevices(inst->vkInstance(), &devCount, nullptr); + qDebug("%d physical devices", devCount); + if (!devCount) + qFatal("No physical devices"); + + // Just pick the first physical device for now. + devCount = 1; + VkResult err = f->vkEnumeratePhysicalDevices(inst->vkInstance(), &devCount, &m_vkPhysDev); + if (err != VK_SUCCESS) + qFatal("Failed to enumerate physical devices: %d", err); + + f->vkGetPhysicalDeviceProperties(m_vkPhysDev, &m_physDevProps); + qDebug("Device name: %s Driver version: %d.%d.%d", m_physDevProps.deviceName, + VK_VERSION_MAJOR(m_physDevProps.driverVersion), VK_VERSION_MINOR(m_physDevProps.driverVersion), + VK_VERSION_PATCH(m_physDevProps.driverVersion)); + + uint32_t queueCount = 0; + f->vkGetPhysicalDeviceQueueFamilyProperties(m_vkPhysDev, &queueCount, nullptr); + QVector<VkQueueFamilyProperties> queueFamilyProps(queueCount); + f->vkGetPhysicalDeviceQueueFamilyProperties(m_vkPhysDev, &queueCount, queueFamilyProps.data()); + int gfxQueueFamilyIdx = -1; + int presQueueFamilyIdx = -1; + // First look for a queue that supports both. + for (int i = 0; i < queueFamilyProps.count(); ++i) { + qDebug("queue family %d: flags=0x%x count=%d", i, queueFamilyProps[i].queueFlags, queueFamilyProps[i].queueCount); + if (gfxQueueFamilyIdx == -1 + && (queueFamilyProps[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) + && inst->supportsPresent(m_vkPhysDev, i, this)) + gfxQueueFamilyIdx = i; + } + if (gfxQueueFamilyIdx != -1) { + presQueueFamilyIdx = gfxQueueFamilyIdx; + } else { + // Separate queues then. + qDebug("No queue with graphics+present; trying separate queues"); + for (int i = 0; i < queueFamilyProps.count(); ++i) { + if (gfxQueueFamilyIdx == -1 && (queueFamilyProps[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)) + gfxQueueFamilyIdx = i; + if (presQueueFamilyIdx == -1 && inst->supportsPresent(m_vkPhysDev, i, this)) + presQueueFamilyIdx = i; + } + } + if (gfxQueueFamilyIdx == -1) + qFatal("No graphics queue family found"); + if (presQueueFamilyIdx == -1) + qFatal("No present queue family found"); + + VkDeviceQueueCreateInfo queueInfo[2]; + const float prio[] = { 0 }; + memset(queueInfo, 0, sizeof(queueInfo)); + queueInfo[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; + queueInfo[0].queueFamilyIndex = gfxQueueFamilyIdx; + queueInfo[0].queueCount = 1; + queueInfo[0].pQueuePriorities = prio; + if (gfxQueueFamilyIdx != presQueueFamilyIdx) { + queueInfo[1].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; + queueInfo[1].queueFamilyIndex = presQueueFamilyIdx; + queueInfo[1].queueCount = 1; + queueInfo[1].pQueuePriorities = prio; + } + + QVector<const char *> devLayers; + if (inst->layers().contains("VK_LAYER_LUNARG_standard_validation")) + devLayers.append("VK_LAYER_LUNARG_standard_validation"); + + QVector<const char *> devExts; + devExts.append("VK_KHR_swapchain"); + + VkDeviceCreateInfo devInfo; + memset(&devInfo, 0, sizeof(devInfo)); + devInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; + devInfo.queueCreateInfoCount = gfxQueueFamilyIdx == presQueueFamilyIdx ? 1 : 2; + devInfo.pQueueCreateInfos = queueInfo; + devInfo.enabledLayerCount = devLayers.count(); + devInfo.ppEnabledLayerNames = devLayers.constData(); + devInfo.enabledExtensionCount = devExts.count(); + devInfo.ppEnabledExtensionNames = devExts.constData(); + + err = f->vkCreateDevice(m_vkPhysDev, &devInfo, nullptr, &m_vkDev); + if (err != VK_SUCCESS) + qFatal("Failed to create device: %d", err); + + m_devFuncs = inst->deviceFunctions(m_vkDev); + + m_devFuncs->vkGetDeviceQueue(m_vkDev, gfxQueueFamilyIdx, 0, &m_vkGfxQueue); + if (gfxQueueFamilyIdx == presQueueFamilyIdx) + m_vkPresQueue = m_vkGfxQueue; + else + m_devFuncs->vkGetDeviceQueue(m_vkDev, presQueueFamilyIdx, 0, &m_vkPresQueue); + + VkCommandPoolCreateInfo poolInfo; + memset(&poolInfo, 0, sizeof(poolInfo)); + poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; + poolInfo.queueFamilyIndex = gfxQueueFamilyIdx; + err = m_devFuncs->vkCreateCommandPool(m_vkDev, &poolInfo, nullptr, &m_vkCmdPool); + if (err != VK_SUCCESS) + qFatal("Failed to create command pool: %d", err); + + m_colorFormat = VK_FORMAT_B8G8R8A8_UNORM; // may get changed later when setting up the swapchain +} + +void VWindow::releaseResources() +{ + if (!m_vkDev) + return; + + m_devFuncs->vkDeviceWaitIdle(m_vkDev); + + if (m_vkCmdPool) { + m_devFuncs->vkDestroyCommandPool(m_vkDev, m_vkCmdPool, nullptr); + m_vkCmdPool = 0; + } + + if (m_vkDev) { + m_devFuncs->vkDestroyDevice(m_vkDev, nullptr); + + // Play nice and notify QVulkanInstance that the QVulkanDeviceFunctions + // for m_vkDev needs to be invalidated. + vulkanInstance()->resetDeviceFunctions(m_vkDev); + + m_vkDev = 0; + } + + m_vkSurface = 0; +} + +void VWindow::recreateSwapChain() +{ + m_swapChainImageSize = size(); + + if (m_swapChainImageSize.isEmpty()) + return; + + QVulkanInstance *inst = vulkanInstance(); + QVulkanFunctions *f = inst->functions(); + m_devFuncs->vkDeviceWaitIdle(m_vkDev); + + if (!m_vkCreateSwapchainKHR) { + m_vkGetPhysicalDeviceSurfaceCapabilitiesKHR = reinterpret_cast<PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR>( + inst->getInstanceProcAddr("vkGetPhysicalDeviceSurfaceCapabilitiesKHR")); + m_vkGetPhysicalDeviceSurfaceFormatsKHR = reinterpret_cast<PFN_vkGetPhysicalDeviceSurfaceFormatsKHR>( + inst->getInstanceProcAddr("vkGetPhysicalDeviceSurfaceFormatsKHR")); + // note: device-specific functions + m_vkCreateSwapchainKHR = reinterpret_cast<PFN_vkCreateSwapchainKHR>(f->vkGetDeviceProcAddr(m_vkDev, "vkCreateSwapchainKHR")); + m_vkDestroySwapchainKHR = reinterpret_cast<PFN_vkDestroySwapchainKHR>(f->vkGetDeviceProcAddr(m_vkDev, "vkDestroySwapchainKHR")); + m_vkGetSwapchainImagesKHR = reinterpret_cast<PFN_vkGetSwapchainImagesKHR>(f->vkGetDeviceProcAddr(m_vkDev, "vkGetSwapchainImagesKHR")); + m_vkAcquireNextImageKHR = reinterpret_cast<PFN_vkAcquireNextImageKHR>(f->vkGetDeviceProcAddr(m_vkDev, "vkAcquireNextImageKHR")); + m_vkQueuePresentKHR = reinterpret_cast<PFN_vkQueuePresentKHR>(f->vkGetDeviceProcAddr(m_vkDev, "vkQueuePresentKHR")); + } + + VkColorSpaceKHR colorSpace = VkColorSpaceKHR(0); + uint32_t formatCount = 0; + m_vkGetPhysicalDeviceSurfaceFormatsKHR(m_vkPhysDev, m_vkSurface, &formatCount, nullptr); + if (formatCount) { + QVector<VkSurfaceFormatKHR> formats(formatCount); + m_vkGetPhysicalDeviceSurfaceFormatsKHR(m_vkPhysDev, m_vkSurface, &formatCount, formats.data()); + if (formats[0].format != VK_FORMAT_UNDEFINED) { + m_colorFormat = formats[0].format; + colorSpace = formats[0].colorSpace; + } + } + + VkSurfaceCapabilitiesKHR surfaceCaps; + m_vkGetPhysicalDeviceSurfaceCapabilitiesKHR(m_vkPhysDev, m_vkSurface, &surfaceCaps); + uint32_t reqBufferCount = SWAPCHAIN_BUFFER_COUNT; + if (surfaceCaps.maxImageCount) + reqBufferCount = qBound(surfaceCaps.minImageCount, reqBufferCount, surfaceCaps.maxImageCount); + + VkExtent2D bufferSize = surfaceCaps.currentExtent; + if (bufferSize.width == uint32_t(-1)) + bufferSize.width = m_swapChainImageSize.width(); + if (bufferSize.height == uint32_t(-1)) + bufferSize.height = m_swapChainImageSize.height(); + + VkSurfaceTransformFlagBitsKHR preTransform = + (surfaceCaps.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) + ? VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR + : surfaceCaps.currentTransform; + + VkCompositeAlphaFlagBitsKHR compositeAlpha = + (surfaceCaps.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR) + ? VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR + : VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; + + VkPresentModeKHR presentMode = VK_PRESENT_MODE_FIFO_KHR; + + VkSwapchainKHR oldSwapChain = m_swapChain; + VkSwapchainCreateInfoKHR swapChainInfo; + memset(&swapChainInfo, 0, sizeof(swapChainInfo)); + swapChainInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR; + swapChainInfo.surface = m_vkSurface; + swapChainInfo.minImageCount = reqBufferCount; + swapChainInfo.imageFormat = m_colorFormat; + swapChainInfo.imageColorSpace = colorSpace; + swapChainInfo.imageExtent = bufferSize; + swapChainInfo.imageArrayLayers = 1; + swapChainInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; + swapChainInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; + swapChainInfo.preTransform = preTransform; + swapChainInfo.compositeAlpha = compositeAlpha; + swapChainInfo.presentMode = presentMode; + swapChainInfo.clipped = true; + swapChainInfo.oldSwapchain = oldSwapChain; + + qDebug("creating new swap chain of %d buffers, size %dx%d", reqBufferCount, bufferSize.width, bufferSize.height); + + VkSwapchainKHR newSwapChain; + VkResult err = m_vkCreateSwapchainKHR(m_vkDev, &swapChainInfo, nullptr, &newSwapChain); + if (err != VK_SUCCESS) + qFatal("Failed to create swap chain: %d", err); + + if (oldSwapChain) + releaseSwapChain(); + + m_swapChain = newSwapChain; + + m_swapChainBufferCount = 0; + err = m_vkGetSwapchainImagesKHR(m_vkDev, m_swapChain, &m_swapChainBufferCount, nullptr); + if (err != VK_SUCCESS || m_swapChainBufferCount < 2) + qFatal("Failed to get swapchain images: %d (count=%d)", err, m_swapChainBufferCount); + + qDebug("actual swap chain buffer count: %d", m_swapChainBufferCount); + Q_ASSERT(m_swapChainBufferCount <= SWAPCHAIN_BUFFER_COUNT); + + VkImage swapChainImages[SWAPCHAIN_BUFFER_COUNT]; + err = m_vkGetSwapchainImagesKHR(m_vkDev, m_swapChain, &m_swapChainBufferCount, swapChainImages); + if (err != VK_SUCCESS) + qFatal("Failed to get swapchain images: %d", err); + + // Now that we know m_colorFormat, create the default renderpass, the framebuffers will need it. + createDefaultRenderPass(); + + VkFenceCreateInfo fenceInfo = { VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, nullptr, VK_FENCE_CREATE_SIGNALED_BIT }; + + for (uint32_t i = 0; i < m_swapChainBufferCount; ++i) { + ImageResources &image(m_imageRes[i]); + image.image = swapChainImages[i]; + + VkImageViewCreateInfo imgViewInfo; + memset(&imgViewInfo, 0, sizeof(imgViewInfo)); + imgViewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + imgViewInfo.image = swapChainImages[i]; + imgViewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D; + imgViewInfo.format = m_colorFormat; + imgViewInfo.components.r = VK_COMPONENT_SWIZZLE_R; + imgViewInfo.components.g = VK_COMPONENT_SWIZZLE_G; + imgViewInfo.components.b = VK_COMPONENT_SWIZZLE_B; + imgViewInfo.components.a = VK_COMPONENT_SWIZZLE_A; + imgViewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + imgViewInfo.subresourceRange.levelCount = imgViewInfo.subresourceRange.layerCount = 1; + err = m_devFuncs->vkCreateImageView(m_vkDev, &imgViewInfo, nullptr, &image.imageView); + if (err != VK_SUCCESS) + qFatal("Failed to create swapchain image view %d: %d", i, err); + + err = m_devFuncs->vkCreateFence(m_vkDev, &fenceInfo, nullptr, &image.cmdFence); + if (err != VK_SUCCESS) + qFatal("Failed to create command buffer fence: %d", err); + image.cmdFenceWaitable = true; + + VkImageView views[1] = { image.imageView }; + VkFramebufferCreateInfo fbInfo; + memset(&fbInfo, 0, sizeof(fbInfo)); + fbInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; + fbInfo.renderPass = m_defaultRenderPass; + fbInfo.attachmentCount = 1; + fbInfo.pAttachments = views; + fbInfo.width = m_swapChainImageSize.width(); + fbInfo.height = m_swapChainImageSize.height(); + fbInfo.layers = 1; + VkResult err = m_devFuncs->vkCreateFramebuffer(m_vkDev, &fbInfo, nullptr, &image.fb); + if (err != VK_SUCCESS) + qFatal("Failed to create framebuffer: %d", err); + } + + m_currentImage = 0; + + VkSemaphoreCreateInfo semInfo = { VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO, nullptr, 0 }; + for (uint32_t i = 0; i < FRAME_LAG; ++i) { + FrameResources &frame(m_frameRes[i]); + m_devFuncs->vkCreateFence(m_vkDev, &fenceInfo, nullptr, &frame.fence); + frame.fenceWaitable = true; + m_devFuncs->vkCreateSemaphore(m_vkDev, &semInfo, nullptr, &frame.imageSem); + m_devFuncs->vkCreateSemaphore(m_vkDev, &semInfo, nullptr, &frame.drawSem); + } + + m_currentFrame = 0; +} + +void VWindow::createDefaultRenderPass() +{ + VkAttachmentDescription attDesc[1]; + memset(attDesc, 0, sizeof(attDesc)); + attDesc[0].format = m_colorFormat; + attDesc[0].samples = VK_SAMPLE_COUNT_1_BIT; + attDesc[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; + attDesc[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE; + attDesc[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE, + attDesc[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE, + attDesc[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; + attDesc[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; + + VkAttachmentReference colorRef = { 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; + + VkSubpassDescription subPassDesc; + memset(&subPassDesc, 0, sizeof(subPassDesc)); + subPassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; + subPassDesc.colorAttachmentCount = 1; + subPassDesc.pColorAttachments = &colorRef; + + VkRenderPassCreateInfo rpInfo; + memset(&rpInfo, 0, sizeof(rpInfo)); + rpInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; + rpInfo.attachmentCount = 1; + rpInfo.pAttachments = attDesc; + rpInfo.subpassCount = 1; + rpInfo.pSubpasses = &subPassDesc; + VkResult err = m_devFuncs->vkCreateRenderPass(m_vkDev, &rpInfo, nullptr, &m_defaultRenderPass); + if (err != VK_SUCCESS) + qFatal("Failed to create renderpass: %d", err); +} + +void VWindow::releaseSwapChain() +{ + if (!m_vkDev) + return; + + m_devFuncs->vkDeviceWaitIdle(m_vkDev); + + if (m_defaultRenderPass) { + m_devFuncs->vkDestroyRenderPass(m_vkDev, m_defaultRenderPass, nullptr); + m_defaultRenderPass = 0; + } + + for (uint32_t i = 0; i < FRAME_LAG; ++i) { + FrameResources &frame(m_frameRes[i]); + if (frame.fence) { + if (frame.fenceWaitable) + m_devFuncs->vkWaitForFences(m_vkDev, 1, &frame.fence, VK_TRUE, UINT64_MAX); + m_devFuncs->vkDestroyFence(m_vkDev, frame.fence, nullptr); + frame.fence = 0; + frame.fenceWaitable = false; + } + if (frame.imageSem) { + m_devFuncs->vkDestroySemaphore(m_vkDev, frame.imageSem, nullptr); + frame.imageSem = 0; + } + if (frame.drawSem) { + m_devFuncs->vkDestroySemaphore(m_vkDev, frame.drawSem, nullptr); + frame.drawSem = 0; + } + } + + for (uint32_t i = 0; i < m_swapChainBufferCount; ++i) { + ImageResources &image(m_imageRes[i]); + if (image.cmdFence) { + if (image.cmdFenceWaitable) + m_devFuncs->vkWaitForFences(m_vkDev, 1, &image.cmdFence, VK_TRUE, UINT64_MAX); + m_devFuncs->vkDestroyFence(m_vkDev, image.cmdFence, nullptr); + image.cmdFence = 0; + image.cmdFenceWaitable = false; + } + if (image.fb) { + m_devFuncs->vkDestroyFramebuffer(m_vkDev, image.fb, nullptr); + image.fb = 0; + } + if (image.imageView) { + m_devFuncs->vkDestroyImageView(m_vkDev, image.imageView, nullptr); + image.imageView = 0; + } + if (image.cmdBuf) { + m_devFuncs->vkFreeCommandBuffers(m_vkDev, m_vkCmdPool, 1, &image.cmdBuf); + image.cmdBuf = 0; + } + } + + if (m_swapChain) { + m_vkDestroySwapchainKHR(m_vkDev, m_swapChain, nullptr); + m_swapChain = 0; + } +} + +void VWindow::render() +{ + if (!m_swapChain) + return; + + if (size() != m_swapChainImageSize) { + recreateSwapChain(); + if (!m_swapChain) + return; + } + + FrameResources &frame(m_frameRes[m_currentFrame]); + + // Wait if we are too far ahead, i.e. the thread gets throttled based on the presentation rate + // (note that we are using FIFO mode -> vsync) + if (frame.fenceWaitable) { + m_devFuncs->vkWaitForFences(m_vkDev, 1, &frame.fence, VK_TRUE, UINT64_MAX); + m_devFuncs->vkResetFences(m_vkDev, 1, &frame.fence); + } + + // move on to next swapchain image + VkResult err = m_vkAcquireNextImageKHR(m_vkDev, m_swapChain, UINT64_MAX, + frame.imageSem, frame.fence, &m_currentImage); + if (err == VK_SUCCESS || err == VK_SUBOPTIMAL_KHR) { + frame.fenceWaitable = true; + } else if (err == VK_ERROR_OUT_OF_DATE_KHR) { + frame.fenceWaitable = false; + recreateSwapChain(); + requestUpdate(); + return; + } else { + qWarning("Failed to acquire next swapchain image: %d", err); + frame.fenceWaitable = false; + requestUpdate(); + return; + } + + // make sure the previous draw for the same image has finished + ImageResources &image(m_imageRes[m_currentImage]); + if (image.cmdFenceWaitable) { + m_devFuncs->vkWaitForFences(m_vkDev, 1, &image.cmdFence, VK_TRUE, UINT64_MAX); + m_devFuncs->vkResetFences(m_vkDev, 1, &image.cmdFence); + } + + // build new draw command buffer + buildDrawCalls(); + + // submit draw calls + VkSubmitInfo submitInfo; + memset(&submitInfo, 0, sizeof(submitInfo)); + submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submitInfo.commandBufferCount = 1; + submitInfo.pCommandBuffers = &image.cmdBuf; + submitInfo.waitSemaphoreCount = 1; + submitInfo.pWaitSemaphores = &frame.imageSem; + submitInfo.signalSemaphoreCount = 1; + submitInfo.pSignalSemaphores = &frame.drawSem; + VkPipelineStageFlags psf = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; + submitInfo.pWaitDstStageMask = &psf; + + err = m_devFuncs->vkQueueSubmit(m_vkGfxQueue, 1, &submitInfo, image.cmdFence); + if (err == VK_SUCCESS) { + image.cmdFenceWaitable = true; + } else { + qWarning("Failed to submit to command queue: %d", err); + image.cmdFenceWaitable = false; + } + + // queue present + VkPresentInfoKHR presInfo; + memset(&presInfo, 0, sizeof(presInfo)); + presInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR; + presInfo.swapchainCount = 1; + presInfo.pSwapchains = &m_swapChain; + presInfo.pImageIndices = &m_currentImage; + presInfo.waitSemaphoreCount = 1; + presInfo.pWaitSemaphores = &frame.drawSem; + + // we do not currently handle the case when the present queue is separate + Q_ASSERT(m_vkGfxQueue == m_vkPresQueue); + + err = m_vkQueuePresentKHR(m_vkGfxQueue, &presInfo); + if (err != VK_SUCCESS) { + if (err == VK_ERROR_OUT_OF_DATE_KHR) { + recreateSwapChain(); + requestUpdate(); + return; + } else if (err != VK_SUBOPTIMAL_KHR) { + qWarning("Failed to present: %d", err); + } + } + + vulkanInstance()->presentQueued(this); + + m_currentFrame = (m_currentFrame + 1) % FRAME_LAG; + requestUpdate(); +} + +void VWindow::buildDrawCalls() +{ + ImageResources &image(m_imageRes[m_currentImage]); + + if (image.cmdBuf) { + m_devFuncs->vkFreeCommandBuffers(m_vkDev, m_vkCmdPool, 1, &image.cmdBuf); + image.cmdBuf = 0; + } + + VkCommandBufferAllocateInfo cmdBufInfo = { + VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO, nullptr, m_vkCmdPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY, 1 }; + VkResult err = m_devFuncs->vkAllocateCommandBuffers(m_vkDev, &cmdBufInfo, &image.cmdBuf); + if (err != VK_SUCCESS) + qFatal("Failed to allocate frame command buffer: %d", err); + + VkCommandBufferBeginInfo cmdBufBeginInfo = { + VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, nullptr, 0, nullptr }; + err = m_devFuncs->vkBeginCommandBuffer(image.cmdBuf, &cmdBufBeginInfo); + if (err != VK_SUCCESS) + qFatal("Failed to begin frame command buffer: %d", err); + + static float g = 0; + g += 0.005f; + if (g > 1.0f) + g = 0.0f; + VkClearColorValue clearColor = { 0.0f, g, 0.0f, 1.0f }; + VkClearValue clearValues[1]; + clearValues[0].color = clearColor; + + VkRenderPassBeginInfo rpBeginInfo; + memset(&rpBeginInfo, 0, sizeof(rpBeginInfo)); + rpBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; + rpBeginInfo.renderPass = m_defaultRenderPass; + rpBeginInfo.framebuffer = image.fb; + rpBeginInfo.renderArea.extent.width = m_swapChainImageSize.width(); + rpBeginInfo.renderArea.extent.height = m_swapChainImageSize.height(); + rpBeginInfo.clearValueCount = 1; + rpBeginInfo.pClearValues = clearValues; + m_devFuncs->vkCmdBeginRenderPass(image.cmdBuf, &rpBeginInfo, VK_SUBPASS_CONTENTS_INLINE); + + m_devFuncs->vkCmdEndRenderPass(image.cmdBuf); + + err = m_devFuncs->vkEndCommandBuffer(image.cmdBuf); + if (err != VK_SUCCESS) + qFatal("Failed to end frame command buffer: %d", err); +} + +int main(int argc, char *argv[]) +{ + QGuiApplication app(argc, argv); + + QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true")); + + QVulkanInstance inst; + // Test the early queries for supported layers/exts. + qDebug() << inst.supportedLayers() << inst.supportedExtensions(); + + // Enable validation layer, if supported. + inst.setLayers(QByteArrayList() << "VK_LAYER_LUNARG_standard_validation"); + + bool ok = inst.create(); + qDebug("QVulkanInstance::create() returned %d", ok); + if (!ok) + return 1; + + VWindow w; + w.setVulkanInstance(&inst); + w.resize(1024, 768); + w.show(); + + return app.exec(); +} |