/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "VulkanManager.h"

#include <android/sync.h>
#include <gui/Surface.h>

#include "Properties.h"
#include "RenderThread.h"
#include "renderstate/RenderState.h"
#include "utils/FatVector.h"

#include <GrBackendSemaphore.h>
#include <GrBackendSurface.h>
#include <GrContext.h>
#include <GrTypes.h>
#include <GrTypes.h>
#include <vk/GrVkExtensions.h>
#include <vk/GrVkTypes.h>

namespace android {
namespace uirenderer {
namespace renderthread {

static void free_features_extensions_structs(const VkPhysicalDeviceFeatures2& features) {
    // All Vulkan structs that could be part of the features chain will start with the
    // structure type followed by the pNext pointer. We cast to the CommonVulkanHeader
    // so we can get access to the pNext for the next struct.
    struct CommonVulkanHeader {
        VkStructureType sType;
        void*           pNext;
    };

    void* pNext = features.pNext;
    while (pNext) {
        void* current = pNext;
        pNext = static_cast<CommonVulkanHeader*>(current)->pNext;
        free(current);
    }
}

#define GET_PROC(F) m##F = (PFN_vk##F)vkGetInstanceProcAddr(VK_NULL_HANDLE, "vk" #F)
#define GET_INST_PROC(F) m##F = (PFN_vk##F)vkGetInstanceProcAddr(mInstance, "vk" #F)
#define GET_DEV_PROC(F) m##F = (PFN_vk##F)vkGetDeviceProcAddr(mDevice, "vk" #F)

void VulkanManager::destroy() {
    // We don't need to explicitly free the command buffer since it automatically gets freed when we
    // delete the VkCommandPool below.
    mDummyCB = VK_NULL_HANDLE;

    if (VK_NULL_HANDLE != mCommandPool) {
        mDestroyCommandPool(mDevice, mCommandPool, nullptr);
        mCommandPool = VK_NULL_HANDLE;
    }

    if (mDevice != VK_NULL_HANDLE) {
        mDeviceWaitIdle(mDevice);
        mDestroyDevice(mDevice, nullptr);
    }

    if (mInstance != VK_NULL_HANDLE) {
        mDestroyInstance(mInstance, nullptr);
    }

    mGraphicsQueue = VK_NULL_HANDLE;
    mPresentQueue = VK_NULL_HANDLE;
    mDevice = VK_NULL_HANDLE;
    mPhysicalDevice = VK_NULL_HANDLE;
    mInstance = VK_NULL_HANDLE;
    mInstanceExtensions.clear();
    mDeviceExtensions.clear();
    free_features_extensions_structs(mPhysicalDeviceFeatures2);
    mPhysicalDeviceFeatures2 = {};
}

void VulkanManager::setupDevice(GrVkExtensions& grExtensions, VkPhysicalDeviceFeatures2& features) {
    VkResult err;

    constexpr VkApplicationInfo app_info = {
        VK_STRUCTURE_TYPE_APPLICATION_INFO, // sType
        nullptr,                            // pNext
        "android framework",                // pApplicationName
        0,                                  // applicationVersion
        "android framework",                // pEngineName
        0,                                  // engineVerison
        mAPIVersion,                        // apiVersion
    };

    {
        GET_PROC(EnumerateInstanceExtensionProperties);

        uint32_t extensionCount = 0;
        err = mEnumerateInstanceExtensionProperties(nullptr, &extensionCount, nullptr);
        LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err);
        std::unique_ptr<VkExtensionProperties[]> extensions(
                new VkExtensionProperties[extensionCount]);
        err = mEnumerateInstanceExtensionProperties(nullptr, &extensionCount, extensions.get());
        LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err);
        bool hasKHRSurfaceExtension = false;
        bool hasKHRAndroidSurfaceExtension = false;
        for (uint32_t i = 0; i < extensionCount; ++i) {
            mInstanceExtensions.push_back(extensions[i].extensionName);
            if (!strcmp(extensions[i].extensionName, VK_KHR_SURFACE_EXTENSION_NAME)) {
                hasKHRSurfaceExtension = true;
            }
            if (!strcmp(extensions[i].extensionName,VK_KHR_ANDROID_SURFACE_EXTENSION_NAME)) {
                hasKHRAndroidSurfaceExtension = true;
            }
        }
        LOG_ALWAYS_FATAL_IF(!hasKHRSurfaceExtension || !hasKHRAndroidSurfaceExtension);
    }

    const VkInstanceCreateInfo instance_create = {
        VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,    // sType
        nullptr,                                   // pNext
        0,                                         // flags
        &app_info,                                 // pApplicationInfo
        0,                                         // enabledLayerNameCount
        nullptr,                                   // ppEnabledLayerNames
        (uint32_t) mInstanceExtensions.size(),     // enabledExtensionNameCount
        mInstanceExtensions.data(),                // ppEnabledExtensionNames
    };

    GET_PROC(CreateInstance);
    err = mCreateInstance(&instance_create, nullptr, &mInstance);
    LOG_ALWAYS_FATAL_IF(err < 0);

    GET_INST_PROC(DestroyInstance);
    GET_INST_PROC(EnumeratePhysicalDevices);
    GET_INST_PROC(GetPhysicalDeviceProperties);
    GET_INST_PROC(GetPhysicalDeviceQueueFamilyProperties);
    GET_INST_PROC(GetPhysicalDeviceFeatures2);
    GET_INST_PROC(GetPhysicalDeviceImageFormatProperties2);
    GET_INST_PROC(CreateDevice);
    GET_INST_PROC(EnumerateDeviceExtensionProperties);
    GET_INST_PROC(CreateAndroidSurfaceKHR);
    GET_INST_PROC(DestroySurfaceKHR);
    GET_INST_PROC(GetPhysicalDeviceSurfaceSupportKHR);
    GET_INST_PROC(GetPhysicalDeviceSurfaceCapabilitiesKHR);
    GET_INST_PROC(GetPhysicalDeviceSurfaceFormatsKHR);
    GET_INST_PROC(GetPhysicalDeviceSurfacePresentModesKHR);

    uint32_t gpuCount;
    LOG_ALWAYS_FATAL_IF(mEnumeratePhysicalDevices(mInstance, &gpuCount, nullptr));
    LOG_ALWAYS_FATAL_IF(!gpuCount);
    // Just returning the first physical device instead of getting the whole array. Since there
    // should only be one device on android.
    gpuCount = 1;
    err = mEnumeratePhysicalDevices(mInstance, &gpuCount, &mPhysicalDevice);
    // VK_INCOMPLETE is returned when the count we provide is less than the total device count.
    LOG_ALWAYS_FATAL_IF(err && VK_INCOMPLETE != err);

    VkPhysicalDeviceProperties physDeviceProperties;
    mGetPhysicalDeviceProperties(mPhysicalDevice, &physDeviceProperties);
    LOG_ALWAYS_FATAL_IF(physDeviceProperties.apiVersion < VK_MAKE_VERSION(1, 1, 0));

    // query to get the initial queue props size
    uint32_t queueCount;
    mGetPhysicalDeviceQueueFamilyProperties(mPhysicalDevice, &queueCount, nullptr);
    LOG_ALWAYS_FATAL_IF(!queueCount);

    // now get the actual queue props
    std::unique_ptr<VkQueueFamilyProperties[]> queueProps(new VkQueueFamilyProperties[queueCount]);
    mGetPhysicalDeviceQueueFamilyProperties(mPhysicalDevice, &queueCount, queueProps.get());

    // iterate to find the graphics queue
    mGraphicsQueueIndex = queueCount;
    for (uint32_t i = 0; i < queueCount; i++) {
        if (queueProps[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
            mGraphicsQueueIndex = i;
            break;
        }
    }
    LOG_ALWAYS_FATAL_IF(mGraphicsQueueIndex == queueCount);

    // All physical devices and queue families on Android must be capable of
    // presentation with any native window. So just use the first one.
    mPresentQueueIndex = 0;

    {
        uint32_t extensionCount = 0;
        err = mEnumerateDeviceExtensionProperties(mPhysicalDevice, nullptr, &extensionCount,
                nullptr);
        LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err);
        std::unique_ptr<VkExtensionProperties[]> extensions(
                new VkExtensionProperties[extensionCount]);
        err = mEnumerateDeviceExtensionProperties(mPhysicalDevice, nullptr, &extensionCount,
                extensions.get());
        LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err);
        bool hasKHRSwapchainExtension = false;
        for (uint32_t i = 0; i < extensionCount; ++i) {
            mDeviceExtensions.push_back(extensions[i].extensionName);
            if (!strcmp(extensions[i].extensionName, VK_KHR_SWAPCHAIN_EXTENSION_NAME)) {
                hasKHRSwapchainExtension = true;
            }
        }
        LOG_ALWAYS_FATAL_IF(!hasKHRSwapchainExtension);
    }

    auto getProc = [] (const char* proc_name, VkInstance instance, VkDevice device) {
        if (device != VK_NULL_HANDLE) {
            return vkGetDeviceProcAddr(device, proc_name);
        }
        return vkGetInstanceProcAddr(instance, proc_name);
    };
    grExtensions.init(getProc, mInstance, mPhysicalDevice, mInstanceExtensions.size(),
            mInstanceExtensions.data(), mDeviceExtensions.size(), mDeviceExtensions.data());

    LOG_ALWAYS_FATAL_IF(!grExtensions.hasExtension(VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME, 1));

    memset(&features, 0, sizeof(VkPhysicalDeviceFeatures2));
    features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
    features.pNext = nullptr;

    // Setup all extension feature structs we may want to use.
    void** tailPNext = &features.pNext;

    if (grExtensions.hasExtension(VK_EXT_BLEND_OPERATION_ADVANCED_EXTENSION_NAME, 2)) {
        VkPhysicalDeviceBlendOperationAdvancedFeaturesEXT* blend;
        blend = (VkPhysicalDeviceBlendOperationAdvancedFeaturesEXT*) malloc(
                sizeof(VkPhysicalDeviceBlendOperationAdvancedFeaturesEXT));
        LOG_ALWAYS_FATAL_IF(!blend);
        blend->sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_BLEND_OPERATION_ADVANCED_FEATURES_EXT;
        blend->pNext = nullptr;
        *tailPNext = blend;
        tailPNext = &blend->pNext;
    }

    VkPhysicalDeviceSamplerYcbcrConversionFeatures* ycbcrFeature;
    ycbcrFeature = (VkPhysicalDeviceSamplerYcbcrConversionFeatures*) malloc(
            sizeof(VkPhysicalDeviceSamplerYcbcrConversionFeatures));
    LOG_ALWAYS_FATAL_IF(!ycbcrFeature);
    ycbcrFeature->sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_YCBCR_CONVERSION_FEATURES;
    ycbcrFeature->pNext = nullptr;
    *tailPNext = ycbcrFeature;
    tailPNext = &ycbcrFeature->pNext;

    // query to get the physical device features
    mGetPhysicalDeviceFeatures2(mPhysicalDevice, &features);
    // this looks like it would slow things down,
    // and we can't depend on it on all platforms
    features.features.robustBufferAccess = VK_FALSE;

    float queuePriorities[1] = { 0.0 };

    void* queueNextPtr = nullptr;

    VkDeviceQueueGlobalPriorityCreateInfoEXT queuePriorityCreateInfo;

    if (Properties::contextPriority != 0
            && grExtensions.hasExtension(VK_EXT_GLOBAL_PRIORITY_EXTENSION_NAME, 2)) {
        memset(&queuePriorityCreateInfo, 0, sizeof(VkDeviceQueueGlobalPriorityCreateInfoEXT));
        queuePriorityCreateInfo.sType =
            VK_STRUCTURE_TYPE_DEVICE_QUEUE_GLOBAL_PRIORITY_CREATE_INFO_EXT;
        queuePriorityCreateInfo.pNext = nullptr;
        switch (Properties::contextPriority) {
            case EGL_CONTEXT_PRIORITY_LOW_IMG:
                queuePriorityCreateInfo.globalPriority = VK_QUEUE_GLOBAL_PRIORITY_LOW_EXT;
                break;
            case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
                queuePriorityCreateInfo.globalPriority = VK_QUEUE_GLOBAL_PRIORITY_MEDIUM_EXT;
                break;
            case EGL_CONTEXT_PRIORITY_HIGH_IMG:
                queuePriorityCreateInfo.globalPriority = VK_QUEUE_GLOBAL_PRIORITY_HIGH_EXT;
                break;
            default:
                LOG_ALWAYS_FATAL("Unsupported context priority");
         }
         queueNextPtr = &queuePriorityCreateInfo;
    }

    const VkDeviceQueueCreateInfo queueInfo[2] = {
        {
            VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // sType
            queueNextPtr,                               // pNext
            0,                                          // VkDeviceQueueCreateFlags
            mGraphicsQueueIndex,                        // queueFamilyIndex
            1,                                          // queueCount
            queuePriorities,                            // pQueuePriorities
        },
        {
            VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // sType
            queueNextPtr,                               // pNext
            0,                                          // VkDeviceQueueCreateFlags
            mPresentQueueIndex,                         // queueFamilyIndex
            1,                                          // queueCount
            queuePriorities,                            // pQueuePriorities
        }
    };
    uint32_t queueInfoCount = (mPresentQueueIndex != mGraphicsQueueIndex) ? 2 : 1;

    const VkDeviceCreateInfo deviceInfo = {
        VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,    // sType
        &features,                               // pNext
        0,                                       // VkDeviceCreateFlags
        queueInfoCount,                          // queueCreateInfoCount
        queueInfo,                               // pQueueCreateInfos
        0,                                       // layerCount
        nullptr,                                 // ppEnabledLayerNames
        (uint32_t) mDeviceExtensions.size(),     // extensionCount
        mDeviceExtensions.data(),                // ppEnabledExtensionNames
        nullptr,                                 // ppEnabledFeatures
    };

    LOG_ALWAYS_FATAL_IF(mCreateDevice(mPhysicalDevice, &deviceInfo, nullptr, &mDevice));

    GET_DEV_PROC(GetDeviceQueue);
    GET_DEV_PROC(DeviceWaitIdle);
    GET_DEV_PROC(DestroyDevice);
    GET_DEV_PROC(CreateCommandPool);
    GET_DEV_PROC(DestroyCommandPool);
    GET_DEV_PROC(AllocateCommandBuffers);
    GET_DEV_PROC(FreeCommandBuffers);
    GET_DEV_PROC(ResetCommandBuffer);
    GET_DEV_PROC(BeginCommandBuffer);
    GET_DEV_PROC(EndCommandBuffer);
    GET_DEV_PROC(CmdPipelineBarrier);
    GET_DEV_PROC(GetDeviceQueue);
    GET_DEV_PROC(QueueSubmit);
    GET_DEV_PROC(QueueWaitIdle);
    GET_DEV_PROC(DeviceWaitIdle);
    GET_DEV_PROC(CreateSemaphore);
    GET_DEV_PROC(DestroySemaphore);
    GET_DEV_PROC(ImportSemaphoreFdKHR);
    GET_DEV_PROC(GetSemaphoreFdKHR);
    GET_DEV_PROC(CreateFence);
    GET_DEV_PROC(DestroyFence);
    GET_DEV_PROC(WaitForFences);
    GET_DEV_PROC(ResetFences);
}

void VulkanManager::initialize() {
    if (mDevice != VK_NULL_HANDLE) {
        return;
    }

    GET_PROC(EnumerateInstanceVersion);
    uint32_t instanceVersion;
    LOG_ALWAYS_FATAL_IF(mEnumerateInstanceVersion(&instanceVersion));
    LOG_ALWAYS_FATAL_IF(instanceVersion < VK_MAKE_VERSION(1, 1, 0));

    this->setupDevice(mExtensions, mPhysicalDeviceFeatures2);

    mGetDeviceQueue(mDevice, mGraphicsQueueIndex, 0, &mGraphicsQueue);

    // create the command pool for the command buffers
    if (VK_NULL_HANDLE == mCommandPool) {
        VkCommandPoolCreateInfo commandPoolInfo;
        memset(&commandPoolInfo, 0, sizeof(VkCommandPoolCreateInfo));
        commandPoolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
        // this needs to be on the render queue
        commandPoolInfo.queueFamilyIndex = mGraphicsQueueIndex;
        commandPoolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
        SkDEBUGCODE(VkResult res =) mCreateCommandPool(mDevice, &commandPoolInfo, nullptr,
                &mCommandPool);
        SkASSERT(VK_SUCCESS == res);
    }
    LOG_ALWAYS_FATAL_IF(mCommandPool == VK_NULL_HANDLE);

    if (!setupDummyCommandBuffer()) {
        this->destroy();
        // Pass through will crash on next line.
    }
    LOG_ALWAYS_FATAL_IF(mDummyCB == VK_NULL_HANDLE);

    mGetDeviceQueue(mDevice, mPresentQueueIndex, 0, &mPresentQueue);

    if (Properties::enablePartialUpdates && Properties::useBufferAge) {
        mSwapBehavior = SwapBehavior::BufferAge;
    }
}

sk_sp<GrContext> VulkanManager::createContext(const GrContextOptions& options) {
    auto getProc = [] (const char* proc_name, VkInstance instance, VkDevice device) {
        if (device != VK_NULL_HANDLE) {
            return vkGetDeviceProcAddr(device, proc_name);
        }
        return vkGetInstanceProcAddr(instance, proc_name);
    };

    GrVkBackendContext backendContext;
    backendContext.fInstance = mInstance;
    backendContext.fPhysicalDevice = mPhysicalDevice;
    backendContext.fDevice = mDevice;
    backendContext.fQueue = mGraphicsQueue;
    backendContext.fGraphicsQueueIndex = mGraphicsQueueIndex;
    backendContext.fMaxAPIVersion = mAPIVersion;
    backendContext.fVkExtensions = &mExtensions;
    backendContext.fDeviceFeatures2 = &mPhysicalDeviceFeatures2;
    backendContext.fGetProc = std::move(getProc);

    return GrContext::MakeVulkan(backendContext, options);
}

VkFunctorInitParams VulkanManager::getVkFunctorInitParams() const {
    return VkFunctorInitParams{
            .instance = mInstance,
            .physical_device = mPhysicalDevice,
            .device = mDevice,
            .queue = mGraphicsQueue,
            .graphics_queue_index = mGraphicsQueueIndex,
            .api_version = mAPIVersion,
            .enabled_instance_extension_names = mInstanceExtensions.data(),
            .enabled_instance_extension_names_length =
                    static_cast<uint32_t>(mInstanceExtensions.size()),
            .enabled_device_extension_names = mDeviceExtensions.data(),
            .enabled_device_extension_names_length =
                    static_cast<uint32_t>(mDeviceExtensions.size()),
            .device_features_2 = &mPhysicalDeviceFeatures2,
    };
}

Frame VulkanManager::dequeueNextBuffer(VulkanSurface* surface) {

    VulkanSurface::NativeBufferInfo* bufferInfo = surface->dequeueNativeBuffer();

    if (bufferInfo == nullptr) {
        ALOGE("VulkanSurface::dequeueNativeBuffer called with an invalid surface!");
        return Frame(-1, -1, 0);
    }

    LOG_ALWAYS_FATAL_IF(!bufferInfo->dequeued);

    if (bufferInfo->dequeue_fence != -1) {
        int fence_clone = dup(bufferInfo->dequeue_fence);
        if (fence_clone == -1) {
            ALOGE("dup(fence) failed, stalling until signalled: %s (%d)", strerror(errno), errno);
            sync_wait(bufferInfo->dequeue_fence, -1 /* forever */);
        } else {
            VkSemaphoreCreateInfo semaphoreInfo;
            semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
            semaphoreInfo.pNext = nullptr;
            semaphoreInfo.flags = 0;
            VkSemaphore semaphore;
            VkResult err = mCreateSemaphore(mDevice, &semaphoreInfo, nullptr, &semaphore);
            LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err, "Failed to create import semaphore, err: %d",
                                err);

            VkImportSemaphoreFdInfoKHR importInfo;
            importInfo.sType = VK_STRUCTURE_TYPE_IMPORT_SEMAPHORE_FD_INFO_KHR;
            importInfo.pNext = nullptr;
            importInfo.semaphore = semaphore;
            importInfo.flags = VK_SEMAPHORE_IMPORT_TEMPORARY_BIT;
            importInfo.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
            importInfo.fd = fence_clone;

            err = mImportSemaphoreFdKHR(mDevice, &importInfo);
            LOG_ALWAYS_FATAL_IF(VK_SUCCESS != err, "Failed to import semaphore, err: %d", err);

            GrBackendSemaphore backendSemaphore;
            backendSemaphore.initVulkan(semaphore);
            bufferInfo->skSurface->wait(1, &backendSemaphore);
        }
    }

    int bufferAge = (mSwapBehavior == SwapBehavior::Discard) ? 0 : surface->getCurrentBuffersAge();
    return Frame(surface->logicalWidth(), surface->logicalHeight(), bufferAge);
}

void VulkanManager::swapBuffers(VulkanSurface* surface, const SkRect& dirtyRect) {
    if (CC_UNLIKELY(Properties::waitForGpuCompletion)) {
        ATRACE_NAME("Finishing GPU work");
        mDeviceWaitIdle(mDevice);
    }

    VkExportSemaphoreCreateInfo exportInfo;
    exportInfo.sType = VK_STRUCTURE_TYPE_EXPORT_SEMAPHORE_CREATE_INFO;
    exportInfo.pNext = nullptr;
    exportInfo.handleTypes = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;

    VkSemaphoreCreateInfo semaphoreInfo;
    semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
    semaphoreInfo.pNext = &exportInfo;
    semaphoreInfo.flags = 0;
    VkSemaphore semaphore;
    VkResult err = mCreateSemaphore(mDevice, &semaphoreInfo, nullptr, &semaphore);
    ALOGE_IF(VK_SUCCESS != err, "VulkanManager::swapBuffers(): Failed to create semaphore");

    GrBackendSemaphore backendSemaphore;
    backendSemaphore.initVulkan(semaphore);

    VulkanSurface::NativeBufferInfo* bufferInfo = surface->getCurrentBufferInfo();

    int fenceFd = -1;
    GrSemaphoresSubmitted submitted =
            bufferInfo->skSurface->flush(SkSurface::BackendSurfaceAccess::kPresent,
                                         SkSurface::kNone_FlushFlags, 1, &backendSemaphore);
    if (submitted == GrSemaphoresSubmitted::kYes) {
        VkSemaphoreGetFdInfoKHR getFdInfo;
        getFdInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_GET_FD_INFO_KHR;
        getFdInfo.pNext = nullptr;
        getFdInfo.semaphore = semaphore;
        getFdInfo.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;

        err = mGetSemaphoreFdKHR(mDevice, &getFdInfo, &fenceFd);
        ALOGE_IF(VK_SUCCESS != err, "VulkanManager::swapBuffers(): Failed to get semaphore Fd");
    } else {
        ALOGE("VulkanManager::swapBuffers(): Semaphore submission failed");
        mQueueWaitIdle(mGraphicsQueue);
    }

    surface->presentCurrentBuffer(dirtyRect, fenceFd);

    // Exporting a semaphore with copy transference via vkGetSemaphoreFdKHR, has the same effect of
    // destroying the semaphore and creating a new one with the same handle, and the payloads
    // ownership is move to the Fd we created. Thus the semaphore is in a state that we can delete
    // it and we don't need to wait on the command buffer we submitted to finish.
    mDestroySemaphore(mDevice, semaphore, nullptr);
}

void VulkanManager::destroySurface(VulkanSurface* surface) {
    // Make sure all submit commands have finished before starting to destroy objects.
    if (VK_NULL_HANDLE != mPresentQueue) {
        mQueueWaitIdle(mPresentQueue);
    }
    mDeviceWaitIdle(mDevice);

    delete surface;
}

VulkanSurface* VulkanManager::createSurface(ANativeWindow* window, ColorMode colorMode,
                                            sk_sp<SkColorSpace> surfaceColorSpace,
                                            SkColorType surfaceColorType,
                                            GrContext* grContext) {
    LOG_ALWAYS_FATAL_IF(!hasVkContext(), "Not initialized");
    if (!window) {
        return nullptr;
    }

    return VulkanSurface::Create(window, colorMode, surfaceColorType, surfaceColorSpace, grContext,
                                  *this);
}

bool VulkanManager::setupDummyCommandBuffer() {
    if (mDummyCB != VK_NULL_HANDLE) {
        return true;
    }

    VkCommandBufferAllocateInfo commandBuffersInfo;
    memset(&commandBuffersInfo, 0, sizeof(VkCommandBufferAllocateInfo));
    commandBuffersInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
    commandBuffersInfo.pNext = nullptr;
    commandBuffersInfo.commandPool = mCommandPool;
    commandBuffersInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
    commandBuffersInfo.commandBufferCount = 1;

    VkResult err = mAllocateCommandBuffers(mDevice, &commandBuffersInfo, &mDummyCB);
    if (err != VK_SUCCESS) {
        // It is probably unnecessary to set this back to VK_NULL_HANDLE, but we set it anyways to
        // make sure the driver didn't set a value and then return a failure.
        mDummyCB = VK_NULL_HANDLE;
        return false;
    }

    VkCommandBufferBeginInfo beginInfo;
    memset(&beginInfo, 0, sizeof(VkCommandBufferBeginInfo));
    beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
    beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;

    mBeginCommandBuffer(mDummyCB, &beginInfo);
    mEndCommandBuffer(mDummyCB);
    return true;
}

status_t VulkanManager::fenceWait(sp<Fence>& fence) {
    if (!hasVkContext()) {
        ALOGE("VulkanManager::fenceWait: VkDevice not initialized");
        return INVALID_OPERATION;
    }

    // Block GPU on the fence.
    int fenceFd = fence->dup();
    if (fenceFd == -1) {
        ALOGE("VulkanManager::fenceWait: error dup'ing fence fd: %d", errno);
        return -errno;
    }

    VkSemaphoreCreateInfo semaphoreInfo;
    semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
    semaphoreInfo.pNext = nullptr;
    semaphoreInfo.flags = 0;
    VkSemaphore semaphore;
    VkResult err = mCreateSemaphore(mDevice, &semaphoreInfo, nullptr, &semaphore);
    if (VK_SUCCESS != err) {
        ALOGE("Failed to create import semaphore, err: %d", err);
        return UNKNOWN_ERROR;
    }
    VkImportSemaphoreFdInfoKHR importInfo;
    importInfo.sType = VK_STRUCTURE_TYPE_IMPORT_SEMAPHORE_FD_INFO_KHR;
    importInfo.pNext = nullptr;
    importInfo.semaphore = semaphore;
    importInfo.flags = VK_SEMAPHORE_IMPORT_TEMPORARY_BIT;
    importInfo.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
    importInfo.fd = fenceFd;

    err = mImportSemaphoreFdKHR(mDevice, &importInfo);
    if (VK_SUCCESS != err) {
        ALOGE("Failed to import semaphore, err: %d", err);
        return UNKNOWN_ERROR;
    }

    LOG_ALWAYS_FATAL_IF(mDummyCB == VK_NULL_HANDLE);

    VkPipelineStageFlags waitDstStageFlags = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;

    VkSubmitInfo submitInfo;
    memset(&submitInfo, 0, sizeof(VkSubmitInfo));
    submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
    submitInfo.waitSemaphoreCount = 1;
    // Wait to make sure aquire semaphore set above has signaled.
    submitInfo.pWaitSemaphores = &semaphore;
    submitInfo.pWaitDstStageMask = &waitDstStageFlags;
    submitInfo.commandBufferCount = 1;
    submitInfo.pCommandBuffers = &mDummyCB;
    submitInfo.signalSemaphoreCount = 0;

    mQueueSubmit(mGraphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);

    // On Android when we import a semaphore, it is imported using temporary permanence. That
    // means as soon as we queue the semaphore for a wait it reverts to its previous permanent
    // state before importing. This means it will now be in an idle state with no pending
    // signal or wait operations, so it is safe to immediately delete it.
    mDestroySemaphore(mDevice, semaphore, nullptr);
    return OK;
}

status_t VulkanManager::createReleaseFence(sp<Fence>& nativeFence) {
    if (!hasVkContext()) {
        ALOGE("VulkanManager::createReleaseFence: VkDevice not initialized");
        return INVALID_OPERATION;
    }

    VkExportSemaphoreCreateInfo exportInfo;
    exportInfo.sType = VK_STRUCTURE_TYPE_EXPORT_SEMAPHORE_CREATE_INFO;
    exportInfo.pNext = nullptr;
    exportInfo.handleTypes = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;

    VkSemaphoreCreateInfo semaphoreInfo;
    semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
    semaphoreInfo.pNext = &exportInfo;
    semaphoreInfo.flags = 0;
    VkSemaphore semaphore;
    VkResult err = mCreateSemaphore(mDevice, &semaphoreInfo, nullptr, &semaphore);
    if (VK_SUCCESS != err) {
        ALOGE("VulkanManager::createReleaseFence: Failed to create semaphore");
        return INVALID_OPERATION;
    }

    LOG_ALWAYS_FATAL_IF(mDummyCB == VK_NULL_HANDLE);

    VkSubmitInfo submitInfo;
    memset(&submitInfo, 0, sizeof(VkSubmitInfo));
    submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
    submitInfo.waitSemaphoreCount = 0;
    submitInfo.pWaitSemaphores = nullptr;
    submitInfo.pWaitDstStageMask = nullptr;
    submitInfo.commandBufferCount = 1;
    submitInfo.pCommandBuffers = &mDummyCB;
    submitInfo.signalSemaphoreCount = 1;
    submitInfo.pSignalSemaphores = &semaphore;

    mQueueSubmit(mGraphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);

    VkSemaphoreGetFdInfoKHR getFdInfo;
    getFdInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_GET_FD_INFO_KHR;
    getFdInfo.pNext = nullptr;
    getFdInfo.semaphore = semaphore;
    getFdInfo.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;

    int fenceFd = 0;

    err = mGetSemaphoreFdKHR(mDevice, &getFdInfo, &fenceFd);
    if (VK_SUCCESS != err) {
        ALOGE("VulkanManager::createReleaseFence: Failed to get semaphore Fd");
        return INVALID_OPERATION;
    }
    nativeFence = new Fence(fenceFd);

    // Exporting a semaphore with copy transference via vkGetSemahporeFdKHR, has the same effect of
    // destroying the semaphore and creating a new one with the same handle, and the payloads
    // ownership is move to the Fd we created. Thus the semahpore is in a state that we can delete
    // it and we don't need to wait on the command buffer we submitted to finish.
    mDestroySemaphore(mDevice, semaphore, nullptr);

    return OK;
}

} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */