layers/swapchain.cpp

/* Copyright (c) 2015-2016 The Khronos Group Inc.
 * Copyright (c) 2015-2016 Valve Corporation
 * Copyright (c) 2015-2016 LunarG, Inc.
 * Copyright (C) 2015-2016 Google Inc.
 *
 * 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.
 *
 * Author: Ian Elliott <ian@lunarg.com>
 * Author: Ian Elliott <ianelliott@google.com>
 */

// For Windows, this #include must come before other Vk headers.
#include <vk_loader_platform.h>

#include "swapchain.h"
#include "vk_enum_string_helper.h"
#include "vk_layer_extension_utils.h"
#include "vk_layer_utils.h"
#include "vk_validation_error_messages.h"
#include <mutex>
#include <stdio.h>
#include <string.h>
#include <vulkan/vk_icd.h>

namespace swapchain {

static std::mutex global_lock;

// The following is for logging error messages:
static std::unordered_map<void *, layer_data *> layer_data_map;

static uint32_t loader_layer_if_version = CURRENT_LOADER_LAYER_INTERFACE_VERSION;

static const VkExtensionProperties instance_extensions[] = {{VK_EXT_DEBUG_REPORT_EXTENSION_NAME, VK_EXT_DEBUG_REPORT_SPEC_VERSION}};

static const VkLayerProperties swapchain_layer = {
    "VK_LAYER_LUNARG_swapchain", VK_LAYER_API_VERSION, 1, "LunarG Validation Layer",
};

static void checkDeviceRegisterExtensions(VkPhysicalDevice physicalDevice, const VkDeviceCreateInfo *pCreateInfo, VkDevice device) {
    layer_data *my_device_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    layer_data *my_instance_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);

    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_instance_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_instance_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }
    if (pPhysicalDevice) {
        my_device_data->deviceMap[device].pPhysicalDevice = pPhysicalDevice;
        pPhysicalDevice->pDevice = &my_device_data->deviceMap[device];
    } else {
        // TBD: Should we leave error in (since Swapchain really needs this
        // link)?
        log_msg(my_instance_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_PHYSICAL_DEVICE_EXT,
                reinterpret_cast<uint64_t>(physicalDevice), __LINE__, VALIDATION_ERROR_00031, "Swapchain",
                "vkCreateDevice() called with a non-valid VkPhysicalDevice. %s", validation_error_map[VALIDATION_ERROR_00031]);
    }
    my_device_data->deviceMap[device].device = device;
}

static void checkInstanceRegisterExtensions(const VkInstanceCreateInfo *pCreateInfo, VkInstance instance) {
    uint32_t i;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);

    // Remember this instance, and whether the VK_KHR_surface extension
    // was enabled for it:
    my_data->instanceMap[instance].instance = instance;
    my_data->instanceMap[instance].displayExtensionEnabled = false;

    // Look for one or more debug report create info structures, and copy the
    // callback(s) for each one found (for use by vkDestroyInstance)
    layer_copy_tmp_callbacks(pCreateInfo->pNext, &my_data->num_tmp_callbacks, &my_data->tmp_dbg_create_infos,
                             &my_data->tmp_callbacks);

    // Record whether the WSI instance extension was enabled for this
    // VkInstance.  No need to check if the extension was advertised by
    // vkEnumerateInstanceExtensionProperties(), since the loader handles that.
    for (i = 0; i < pCreateInfo->enabledExtensionCount; i++) {
        if (strcmp(pCreateInfo->ppEnabledExtensionNames[i], VK_KHR_DISPLAY_EXTENSION_NAME) == 0) {
            my_data->instanceMap[instance].displayExtensionEnabled = true;
        }
    }
}

#include "vk_dispatch_table_helper.h"
static void init_swapchain(layer_data *my_data, const VkAllocationCallbacks *pAllocator) {
    layer_debug_actions(my_data->report_data, my_data->logging_callback, pAllocator, "lunarg_swapchain");
}

static const char *presentModeStr(VkPresentModeKHR value) {
    // Return a string corresponding to the value:
    return string_VkPresentModeKHR(value);
}

static const char *sharingModeStr(VkSharingMode value) {
    // Return a string corresponding to the value:
    return string_VkSharingMode(value);
}

// TODO This overload is only preserved for validateCreateSwapchainKHR(), which doesn't have a VU msgCode defined yet.
// When a VU msgCode is defined, this overload can be deleted, and the latter form used instead.
static bool ValidateQueueFamilyIndex(layer_data *my_data, uint32_t queue_family_index, uint32_t queue_family_count,
                                     VkPhysicalDevice physical_device, const char *function) {
    bool skip_call = false;
    if (queue_family_index >= queue_family_count) {
        skip_call = log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_PHYSICAL_DEVICE_EXT,
                            reinterpret_cast<uint64_t>(physical_device), __LINE__, SWAPCHAIN_QUEUE_FAMILY_INDEX_TOO_LARGE,
                            swapchain_layer_name,
                            "%s() called with a queueFamilyIndex that is too large (i.e. %d).  The maximum value (returned by "
                            "vkGetPhysicalDeviceQueueFamilyProperties) is only %d.",
                            function, queue_family_index, queue_family_count);
    }
    return skip_call;
}

static bool ValidateQueueFamilyIndex(layer_data *my_data, uint32_t queue_family_index, uint32_t queue_family_count,
                                     VkPhysicalDevice physical_device, const char *function,
                                     /*enum*/ UNIQUE_VALIDATION_ERROR_CODE msgCode) {
    bool skip_call = false;
    if (queue_family_index >= queue_family_count) {
        skip_call = log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_PHYSICAL_DEVICE_EXT,
                            reinterpret_cast<uint64_t>(physical_device), __LINE__, msgCode, swapchain_layer_name,
                            "%s() called with a queueFamilyIndex that is too large (i.e. %d).  The maximum value (returned by "
                            "vkGetPhysicalDeviceQueueFamilyProperties) is only %d. %s",
                            function, queue_family_index, queue_family_count, validation_error_map[msgCode]);
    }
    return skip_call;
}

VKAPI_ATTR VkResult VKAPI_CALL CreateInstance(const VkInstanceCreateInfo *pCreateInfo, const VkAllocationCallbacks *pAllocator,
                                              VkInstance *pInstance) {
    VkLayerInstanceCreateInfo *chain_info = get_chain_info(pCreateInfo, VK_LAYER_LINK_INFO);

    assert(chain_info->u.pLayerInfo);
    PFN_vkGetInstanceProcAddr fpGetInstanceProcAddr = chain_info->u.pLayerInfo->pfnNextGetInstanceProcAddr;
    PFN_vkCreateInstance fpCreateInstance = (PFN_vkCreateInstance)fpGetInstanceProcAddr(NULL, "vkCreateInstance");
    if (fpCreateInstance == NULL) {
        return VK_ERROR_INITIALIZATION_FAILED;
    }

    // Advance the link info for the next element on the chain
    chain_info->u.pLayerInfo = chain_info->u.pLayerInfo->pNext;

    VkResult result = fpCreateInstance(pCreateInfo, pAllocator, pInstance);
    if (result != VK_SUCCESS) {
        return result;
    }

    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(*pInstance), layer_data_map);
    my_data->instance = *pInstance;
    my_data->instance_dispatch_table = new VkLayerInstanceDispatchTable;
    layer_init_instance_dispatch_table(*pInstance, my_data->instance_dispatch_table, fpGetInstanceProcAddr);
    my_data->report_data = debug_report_create_instance(my_data->instance_dispatch_table, *pInstance,
                                                        pCreateInfo->enabledExtensionCount, pCreateInfo->ppEnabledExtensionNames);

    // Call the following function after my_data is initialized:
    checkInstanceRegisterExtensions(pCreateInfo, *pInstance);
    init_swapchain(my_data, pAllocator);

    return result;
}

VKAPI_ATTR void VKAPI_CALL DestroyInstance(VkInstance instance, const VkAllocationCallbacks *pAllocator) {
    dispatch_key key = get_dispatch_key(instance);
    layer_data *my_data = GetLayerDataPtr(key, layer_data_map);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    // Call down the call chain:
    my_data->instance_dispatch_table->DestroyInstance(instance, pAllocator);

    std::lock_guard<std::mutex> lock(global_lock);

    // Enable the temporary callback(s) here to catch cleanup issues:
    bool callback_setup = false;
    if (my_data->num_tmp_callbacks > 0) {
        if (!layer_enable_tmp_callbacks(my_data->report_data, my_data->num_tmp_callbacks, my_data->tmp_dbg_create_infos,
                                        my_data->tmp_callbacks)) {
            callback_setup = true;
        }
    }

    // Do additional internal cleanup:
    if (pInstance) {
        // Delete all of the SwpPhysicalDevice's, SwpSurface's, and the
        // SwpInstance associated with this instance:
        for (auto it = pInstance->physicalDevices.begin(); it != pInstance->physicalDevices.end(); it++) {
            // Free memory that was allocated for/by this SwpPhysicalDevice:
            SwpPhysicalDevice *pPhysicalDevice = it->second;
            if (pPhysicalDevice) {
                if (pPhysicalDevice->pDevice) {
                    log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                            reinterpret_cast<uint64_t>(pPhysicalDevice->pDevice->device), __LINE__, VALIDATION_ERROR_00018,
                            swapchain_layer_name,
                            "VkDestroyInstance() called before all of its associated VkDevices were destroyed. %s",
                            validation_error_map[VALIDATION_ERROR_00018]);
                }
            }

            // Erase the SwpPhysicalDevice's from the my_data->physicalDeviceMap (which
            // are simply pointed to by the SwpInstance):
            my_data->physicalDeviceMap.erase(it->second->physicalDevice);
        }
        for (auto it = pInstance->surfaces.begin(); it != pInstance->surfaces.end(); it++) {
            // Free memory that was allocated for/by this SwpPhysicalDevice:
            SwpSurface *pSurface = it->second;
            if (pSurface) {
                log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                        reinterpret_cast<uint64_t>(pInstance->instance), __LINE__, VALIDATION_ERROR_00018, swapchain_layer_name,
                        "VkDestroyInstance() called before all of its associated VkSurfaceKHRs were destroyed. %s",
                        validation_error_map[VALIDATION_ERROR_00018]);
            }
        }
        my_data->instanceMap.erase(instance);
    }

    // Disable and cleanup the temporary callback(s):
    if (callback_setup) {
        layer_disable_tmp_callbacks(my_data->report_data, my_data->num_tmp_callbacks, my_data->tmp_callbacks);
    }
    if (my_data->num_tmp_callbacks > 0) {
        layer_free_tmp_callbacks(my_data->tmp_dbg_create_infos, my_data->tmp_callbacks);
        my_data->num_tmp_callbacks = 0;
    }

    // Clean up logging callback, if any
    while (my_data->logging_callback.size() > 0) {
        VkDebugReportCallbackEXT callback = my_data->logging_callback.back();
        layer_destroy_msg_callback(my_data->report_data, callback, pAllocator);
        my_data->logging_callback.pop_back();
    }
    layer_debug_report_destroy_instance(my_data->report_data);

    delete my_data->instance_dispatch_table;
    layer_data_map.erase(key);
}

static void PostCallRecordGetPhysicalDeviceQueueFamilyProperties(layer_data *dev_data, VkPhysicalDevice physical_device,
                                                                 uint32_t *qfp_count, bool qfp_is_null) {
    // Record the result of this query:
    std::lock_guard<std::mutex> lock(global_lock);
    SwpPhysicalDevice *phy_data = NULL;
    {
        auto it = dev_data->physicalDeviceMap.find(physical_device);
        phy_data = (it == dev_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }
    // Note: for poorly-written applications (e.g. that don't call this command
    // twice, the first time with pQueueFamilyProperties set to NULL, and the
    // second time with a non-NULL pQueueFamilyProperties and with the same
    // count as returned the first time), record the count when
    // queue family property data pointer is non-NULL:
    if (phy_data && qfp_count && !qfp_is_null) {
        phy_data->gotQueueFamilyPropertyCount = true;
        phy_data->numOfQueueFamilies = *qfp_count;
    }
}

VKAPI_ATTR void VKAPI_CALL GetPhysicalDeviceQueueFamilyProperties(VkPhysicalDevice physicalDevice,
                                                                  uint32_t *pQueueFamilyPropertyCount,
                                                                  VkQueueFamilyProperties *pQueueFamilyProperties) {
    layer_data *dev_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);

    // Call down the call chain:
    dev_data->instance_dispatch_table->GetPhysicalDeviceQueueFamilyProperties(physicalDevice, pQueueFamilyPropertyCount,
                                                                              pQueueFamilyProperties);
    PostCallRecordGetPhysicalDeviceQueueFamilyProperties(dev_data, physicalDevice, pQueueFamilyPropertyCount,
                                                         pQueueFamilyProperties == NULL);
}

VKAPI_ATTR void VKAPI_CALL GetPhysicalDeviceQueueFamilyProperties2KHR(VkPhysicalDevice physicalDevice,
                                                                      uint32_t *pQueueFamilyPropertyCount,
                                                                      VkQueueFamilyProperties2KHR *pQueueFamilyProperties) {
    auto dev_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    dev_data->instance_dispatch_table->GetPhysicalDeviceQueueFamilyProperties2KHR(physicalDevice, pQueueFamilyPropertyCount,
                                                                                  pQueueFamilyProperties);
    PostCallRecordGetPhysicalDeviceQueueFamilyProperties(dev_data, physicalDevice, pQueueFamilyPropertyCount,
                                                         pQueueFamilyProperties == NULL);
}

#ifdef VK_USE_PLATFORM_ANDROID_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateAndroidSurfaceKHR(VkInstance instance, const VkAndroidSurfaceCreateInfoKHR *pCreateInfo,
                                                       const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateAndroidSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}
#endif  // VK_USE_PLATFORM_ANDROID_KHR

#ifdef VK_USE_PLATFORM_MIR_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateMirSurfaceKHR(VkInstance instance, const VkMirSurfaceCreateInfoKHR *pCreateInfo,
                                                   const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateMirSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkBool32 VKAPI_CALL GetPhysicalDeviceMirPresentationSupportKHR(VkPhysicalDevice physicalDevice,
                                                                          uint32_t queueFamilyIndex, MirConnection *connection) {
    VkBool32 result = VK_FALSE;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceMirPresentationSupportKHR",
                                              VALIDATION_ERROR_01893);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceMirPresentationSupportKHR(physicalDevice, queueFamilyIndex,
                                                                                              connection);
    }
    return result;
}
#endif  // VK_USE_PLATFORM_MIR_KHR

#ifdef VK_USE_PLATFORM_WAYLAND_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateWaylandSurfaceKHR(VkInstance instance, const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
                                                       const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateWaylandSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkBool32 VKAPI_CALL GetPhysicalDeviceWaylandPresentationSupportKHR(VkPhysicalDevice physicalDevice,
                                                                              uint32_t queueFamilyIndex,
                                                                              struct wl_display *display) {
    VkBool32 result = VK_FALSE;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceWaylandPresentationSupportKHR",
                                              VALIDATION_ERROR_01896);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceWaylandPresentationSupportKHR(physicalDevice, queueFamilyIndex,
                                                                                                  display);
    }
    return result;
}
#endif  // VK_USE_PLATFORM_WAYLAND_KHR

#ifdef VK_USE_PLATFORM_WIN32_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateWin32SurfaceKHR(VkInstance instance, const VkWin32SurfaceCreateInfoKHR *pCreateInfo,
                                                     const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateWin32SurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkBool32 VKAPI_CALL GetPhysicalDeviceWin32PresentationSupportKHR(VkPhysicalDevice physicalDevice,
                                                                            uint32_t queueFamilyIndex) {
    VkBool32 result = VK_FALSE;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceWin32PresentationSupportKHR",
                                              VALIDATION_ERROR_01899);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceWin32PresentationSupportKHR(physicalDevice, queueFamilyIndex);
    }
    return result;
}
#endif  // VK_USE_PLATFORM_WIN32_KHR

#ifdef VK_USE_PLATFORM_XCB_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateXcbSurfaceKHR(VkInstance instance, const VkXcbSurfaceCreateInfoKHR *pCreateInfo,
                                                   const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateXcbSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkBool32 VKAPI_CALL GetPhysicalDeviceXcbPresentationSupportKHR(VkPhysicalDevice physicalDevice,
                                                                          uint32_t queueFamilyIndex, xcb_connection_t *connection,
                                                                          xcb_visualid_t visual_id) {
    VkBool32 result = VK_FALSE;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceXcbPresentationSupportKHR",
                                              VALIDATION_ERROR_01901);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice, queueFamilyIndex,
                                                                                              connection, visual_id);
    }
    return result;
}
#endif  // VK_USE_PLATFORM_XCB_KHR

#ifdef VK_USE_PLATFORM_XLIB_KHR
VKAPI_ATTR VkResult VKAPI_CALL CreateXlibSurfaceKHR(VkInstance instance, const VkXlibSurfaceCreateInfoKHR *pCreateInfo,
                                                    const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->CreateXlibSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->instanceMap.find(instance);
            pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkBool32 VKAPI_CALL GetPhysicalDeviceXlibPresentationSupportKHR(VkPhysicalDevice physicalDevice,
                                                                           uint32_t queueFamilyIndex, Display *dpy,
                                                                           VisualID visualID) {
    VkBool32 result = VK_FALSE;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceXlibPresentationSupportKHR",
                                              VALIDATION_ERROR_01904);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceXlibPresentationSupportKHR(physicalDevice, queueFamilyIndex,
                                                                                               dpy, visualID);
    }
    return result;
}
#endif  // VK_USE_PLATFORM_XLIB_KHR

VKAPI_ATTR VkResult VKAPI_CALL GetPhysicalDeviceDisplayPlanePropertiesKHR(VkPhysicalDevice physicalDevice, uint32_t *pPropertyCount,
                                                                          VkDisplayPlanePropertiesKHR *pProperties) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }
    lock.unlock();

    if (!skip_call) {
        result = my_data->instance_dispatch_table->GetPhysicalDeviceDisplayPlanePropertiesKHR(physicalDevice, pPropertyCount,
                                                                                              pProperties);

        lock.lock();
        if (!pPhysicalDevice->gotDisplayPlanePropertyCount) {
            pPhysicalDevice->displayPlanePropertyCount = *pPropertyCount;
            pPhysicalDevice->gotDisplayPlanePropertyCount = true;
        }
        // TODO store the properties for later checks
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkResult VKAPI_CALL GetDisplayPlaneSupportedDisplaysKHR(VkPhysicalDevice physicalDevice, uint32_t planeIndex,
                                                                   uint32_t *pDisplayCount, VkDisplayKHR *pDisplays) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (!pPhysicalDevice->gotDisplayPlanePropertyCount) {
        skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_WARNING_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                             reinterpret_cast<uint64_t>(pPhysicalDevice->pInstance->instance), __LINE__,
                             SWAPCHAIN_GET_SUPPORTED_DISPLAYS_WITHOUT_QUERY, swapchain_layer_name,
                             "Potential problem with calling vkGetDisplayPlaneSupportedDisplaysKHR() without first "
                             "querying vkGetPhysicalDeviceDisplayPlanePropertiesKHR.");
    }

    if (pPhysicalDevice->gotDisplayPlanePropertyCount && planeIndex >= pPhysicalDevice->displayPlanePropertyCount) {
        skip_call |=
            log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                    reinterpret_cast<uint64_t>(pPhysicalDevice->pInstance->instance), __LINE__, VALIDATION_ERROR_01857,
                    swapchain_layer_name,
                    "vkGetDisplayPlaneSupportedDisplaysKHR(): planeIndex must be in the range [0, %d] that was returned by "
                    "vkGetPhysicalDeviceDisplayPlanePropertiesKHR. Do you have the plane index hardcoded? %s",
                    pPhysicalDevice->displayPlanePropertyCount - 1, validation_error_map[VALIDATION_ERROR_01857]);
    }
    lock.unlock();

    if (!skip_call) {
        result = my_data->instance_dispatch_table->GetDisplayPlaneSupportedDisplaysKHR(physicalDevice, planeIndex, pDisplayCount,
                                                                                       pDisplays);

        return result;
    }
    // TODO validate the returned display objects
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkResult VKAPI_CALL GetDisplayPlaneCapabilitiesKHR(VkPhysicalDevice physicalDevice, VkDisplayModeKHR mode,
                                                              uint32_t planeIndex, VkDisplayPlaneCapabilitiesKHR *pCapabilities) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (!pPhysicalDevice->gotDisplayPlanePropertyCount) {
        skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_WARNING_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                             reinterpret_cast<uint64_t>(pPhysicalDevice->pInstance->instance), __LINE__,
                             SWAPCHAIN_GET_SUPPORTED_DISPLAYS_WITHOUT_QUERY, swapchain_layer_name,
                             "Potential problem with calling vkGetDisplayPlaneCapabilitiesKHR() without first "
                             "querying vkGetPhysicalDeviceDisplayPlanePropertiesKHR.");
    }

    if (pPhysicalDevice->gotDisplayPlanePropertyCount && planeIndex >= pPhysicalDevice->displayPlanePropertyCount) {
        skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                             reinterpret_cast<uint64_t>(pPhysicalDevice->pInstance->instance), __LINE__,
                             SWAPCHAIN_PLANE_INDEX_TOO_LARGE, swapchain_layer_name,
                             "vkGetDisplayPlaneCapabilitiesKHR(): planeIndex must be in the range [0, %d] that was returned by "
                             "vkGetPhysicalDeviceDisplayPlanePropertiesKHR. Do you have the plane index hardcoded?",
                             pPhysicalDevice->displayPlanePropertyCount - 1);
    }

    lock.unlock();

    if (!skip_call) {
        result = my_data->instance_dispatch_table->GetDisplayPlaneCapabilitiesKHR(physicalDevice, mode, planeIndex, pCapabilities);
        return result;
    }

    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR VkResult VKAPI_CALL CreateDisplayPlaneSurfaceKHR(VkInstance instance, const VkDisplaySurfaceCreateInfoKHR *pCreateInfo,
                                                            const VkAllocationCallbacks *pAllocator, VkSurfaceKHR *pSurface) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpInstance *pInstance = &(my_data->instanceMap[instance]);

    // TODO more validation checks
    if (!skip_call) {
        // Call down the call chain:
        lock.unlock();
        result = my_data->instance_dispatch_table->CreateDisplayPlaneSurfaceKHR(instance, pCreateInfo, pAllocator, pSurface);
        lock.lock();

        // Obtain this pointer again after locking:
        pInstance = &(my_data->instanceMap[instance]);
        if ((result == VK_SUCCESS) && pInstance && pSurface) {
            // Record the VkSurfaceKHR returned by the ICD:
            my_data->surfaceMap[*pSurface].surface = *pSurface;
            my_data->surfaceMap[*pSurface].pInstance = pInstance;
            my_data->surfaceMap[*pSurface].numQueueFamilyIndexSupport = 0;
            my_data->surfaceMap[*pSurface].pQueueFamilyIndexSupport = NULL;
            // Point to the associated SwpInstance:
            pInstance->surfaces[*pSurface] = &my_data->surfaceMap[*pSurface];
        }
        lock.unlock();
        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR void VKAPI_CALL DestroySurfaceKHR(VkInstance instance, VkSurfaceKHR surface, const VkAllocationCallbacks *pAllocator) {
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpSurface *pSurface = NULL;
    {
        auto it = my_data->surfaceMap.find(surface);
        pSurface = (it == my_data->surfaceMap.end()) ? NULL : &it->second;
    }

    // Regardless of skip_call value, do some internal cleanup:
    if (pSurface) {
        // Delete the SwpSurface associated with this surface:
        if (pSurface->pInstance) {
            pSurface->pInstance->surfaces.erase(surface);
        }
        if (!pSurface->swapchains.empty()) {
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT,
                                 reinterpret_cast<uint64_t>(instance), __LINE__, VALIDATION_ERROR_01844, swapchain_layer_name,
                                 "vkDestroySurfaceKHR() called before all of its associated VkSwapchainKHRs were destroyed. %s",
                                 validation_error_map[VALIDATION_ERROR_01844]);

            // Empty and then delete all SwpSwapchains
            for (auto it = pSurface->swapchains.begin(); it != pSurface->swapchains.end(); it++) {
                // Delete all SwpImage's
                // In case the swapchain's device hasn't been destroyed yet
                // (which isn't likely, but is possible), delete its
                // association with this swapchain (i.e. so we can't point to
                // this swpchain from that device, later on):
                if (it->second->pDevice) {
                    it->second->pDevice->swapchains.clear();
                }
            }
            pSurface->swapchains.clear();
        }
        my_data->surfaceMap.erase(surface);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        my_data->instance_dispatch_table->DestroySurfaceKHR(instance, surface, pAllocator);
    }
}

VKAPI_ATTR VkResult VKAPI_CALL EnumeratePhysicalDevices(VkInstance instance, uint32_t *pPhysicalDeviceCount,
                                                        VkPhysicalDevice *pPhysicalDevices) {
    VkResult result = VK_SUCCESS;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);

    // Call down the call chain:
    result = my_data->instance_dispatch_table->EnumeratePhysicalDevices(instance, pPhysicalDeviceCount, pPhysicalDevices);

    std::lock_guard<std::mutex> lock(global_lock);
    SwpInstance *pInstance = NULL;
    {
        auto it = my_data->instanceMap.find(instance);
        pInstance = (it == my_data->instanceMap.end()) ? NULL : &it->second;
    }
    if ((result == VK_SUCCESS) && pInstance && pPhysicalDevices && (*pPhysicalDeviceCount > 0)) {
        // Record the VkPhysicalDevices returned by the ICD:
        for (uint32_t i = 0; i < *pPhysicalDeviceCount; i++) {
            my_data->physicalDeviceMap[pPhysicalDevices[i]].physicalDevice = pPhysicalDevices[i];
            my_data->physicalDeviceMap[pPhysicalDevices[i]].pInstance = pInstance;
            my_data->physicalDeviceMap[pPhysicalDevices[i]].pDevice = NULL;
            my_data->physicalDeviceMap[pPhysicalDevices[i]].gotQueueFamilyPropertyCount = false;
            // Point to the associated SwpInstance:
            if (pInstance) {
                pInstance->physicalDevices[pPhysicalDevices[i]] = &my_data->physicalDeviceMap[pPhysicalDevices[i]];
            }
        }
    }
    return result;
}

VKAPI_ATTR VkResult VKAPI_CALL CreateDevice(VkPhysicalDevice physicalDevice, const VkDeviceCreateInfo *pCreateInfo,
                                            const VkAllocationCallbacks *pAllocator, VkDevice *pDevice) {
    layer_data *my_instance_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    VkLayerDeviceCreateInfo *chain_info = get_chain_info(pCreateInfo, VK_LAYER_LINK_INFO);

    assert(chain_info->u.pLayerInfo);
    PFN_vkGetInstanceProcAddr fpGetInstanceProcAddr = chain_info->u.pLayerInfo->pfnNextGetInstanceProcAddr;
    PFN_vkGetDeviceProcAddr fpGetDeviceProcAddr = chain_info->u.pLayerInfo->pfnNextGetDeviceProcAddr;
    PFN_vkCreateDevice fpCreateDevice = (PFN_vkCreateDevice)fpGetInstanceProcAddr(my_instance_data->instance, "vkCreateDevice");
    if (fpCreateDevice == NULL) {
        return VK_ERROR_INITIALIZATION_FAILED;
    }

    // Advance the link info for the next element on the chain
    chain_info->u.pLayerInfo = chain_info->u.pLayerInfo->pNext;

    VkResult result = fpCreateDevice(physicalDevice, pCreateInfo, pAllocator, pDevice);
    if (result != VK_SUCCESS) {
        return result;
    }

    std::lock_guard<std::mutex> lock(global_lock);
    layer_data *my_device_data = GetLayerDataPtr(get_dispatch_key(*pDevice), layer_data_map);

    // Setup device dispatch table
    my_device_data->device_dispatch_table = new VkLayerDispatchTable;
    layer_init_device_dispatch_table(*pDevice, my_device_data->device_dispatch_table, fpGetDeviceProcAddr);

    my_device_data->report_data = layer_debug_report_create_device(my_instance_data->report_data, *pDevice);
    checkDeviceRegisterExtensions(physicalDevice, pCreateInfo, *pDevice);

    return result;
}

VKAPI_ATTR void VKAPI_CALL DestroyDevice(VkDevice device, const VkAllocationCallbacks *pAllocator) {
    dispatch_key key = get_dispatch_key(device);
    layer_data *my_data = GetLayerDataPtr(key, layer_data_map);

    // Call down the call chain:
    my_data->device_dispatch_table->DestroyDevice(device, pAllocator);

    // Do some internal cleanup:
    std::lock_guard<std::mutex> lock(global_lock);
    SwpDevice *pDevice = NULL;
    {
        auto it = my_data->deviceMap.find(device);
        pDevice = (it == my_data->deviceMap.end()) ? NULL : &it->second;
    }
    if (pDevice) {
        // Delete the SwpDevice associated with this device:
        if (pDevice->pPhysicalDevice) {
            pDevice->pPhysicalDevice->pDevice = NULL;
        }
        if (!pDevice->swapchains.empty()) {
            log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                    reinterpret_cast<uint64_t>(device), __LINE__, VALIDATION_ERROR_00049, swapchain_layer_name,
                    "vkDestroyDevice() called before all of its associated VkSwapchainKHRs were destroyed. %s",
                    validation_error_map[VALIDATION_ERROR_00049]);

            // Empty and then delete all SwpSwapchain's
            for (auto it = pDevice->swapchains.begin(); it != pDevice->swapchains.end(); it++) {
                // Delete all SwpImage's
                // In case the swapchain's surface hasn't been destroyed yet
                // (which is likely) delete its association with this swapchain
                // (i.e. so we can't point to this swpchain from that surface,
                // later on):
                if (it->second->pSurface) {
                    it->second->pSurface->swapchains.clear();
                }
            }
            pDevice->swapchains.clear();
        }
        my_data->deviceMap.erase(device);
    }
    delete my_data->device_dispatch_table;
    layer_data_map.erase(key);
}

VKAPI_ATTR VkResult VKAPI_CALL GetPhysicalDeviceSurfaceSupportKHR(VkPhysicalDevice physicalDevice, uint32_t queueFamilyIndex,
                                                                  VkSurfaceKHR surface, VkBool32 *pSupported) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(physicalDevice), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    SwpPhysicalDevice *pPhysicalDevice = NULL;
    {
        auto it = my_data->physicalDeviceMap.find(physicalDevice);
        pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
    }

    if (!pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= log_msg(
            my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_PHYSICAL_DEVICE_EXT,
            reinterpret_cast<uint64_t>(pPhysicalDevice->physicalDevice), __LINE__, SWAPCHAIN_DID_NOT_QUERY_QUEUE_FAMILIES,
            swapchain_layer_name,
            "vkGetPhysicalDeviceSurfaceSupportKHR() called before calling the vkGetPhysicalDeviceQueueFamilyProperties function.");
    } else if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
        skip_call |= ValidateQueueFamilyIndex(my_data, queueFamilyIndex, pPhysicalDevice->numOfQueueFamilies,
                                              pPhysicalDevice->physicalDevice, "vkGetPhysicalDeviceSurfaceSupportKHR",
                                              VALIDATION_ERROR_01889);
    }

    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->instance_dispatch_table->GetPhysicalDeviceSurfaceSupportKHR(physicalDevice, queueFamilyIndex, surface,
                                                                                      pSupported);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->physicalDeviceMap.find(physicalDevice);
            pPhysicalDevice = (it == my_data->physicalDeviceMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pSupported && pPhysicalDevice) {
            // Record the result of this query:
            SwpInstance *pInstance = pPhysicalDevice->pInstance;
            SwpSurface *pSurface = (pInstance) ? pInstance->surfaces[surface] : NULL;
            if (pSurface) {
                pPhysicalDevice->supportedSurfaces[surface] = pSurface;
                if (!pSurface->numQueueFamilyIndexSupport) {
                    if (pPhysicalDevice->gotQueueFamilyPropertyCount) {
                        pSurface->pQueueFamilyIndexSupport =
                            (VkBool32 *)malloc(pPhysicalDevice->numOfQueueFamilies * sizeof(VkBool32));
                        if (pSurface->pQueueFamilyIndexSupport != NULL) {
                            pSurface->numQueueFamilyIndexSupport = pPhysicalDevice->numOfQueueFamilies;
                        }
                    }
                }
                if (pSurface->numQueueFamilyIndexSupport) {
                    pSurface->pQueueFamilyIndexSupport[queueFamilyIndex] = *pSupported;
                }
            }
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

// This function does the up-front validation work for vkCreateSwapchainKHR(),
// and returns true if a logging callback indicates that the call down the
// chain should be skipped:
static bool validateCreateSwapchainKHR(VkDevice device, const VkSwapchainCreateInfoKHR *pCreateInfo, VkSwapchainKHR *pSwapchain) {
    // TODO: Validate cases of re-creating a swapchain (the current code
    // assumes a new swapchain is being created).
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    SwpDevice *pDevice = NULL;
    {
        auto it = my_data->deviceMap.find(device);
        pDevice = (it == my_data->deviceMap.end()) ? NULL : &it->second;
    }

    // Keep around a useful pointer to pPhysicalDevice:
    SwpPhysicalDevice *pPhysicalDevice = pDevice->pPhysicalDevice;

    // Validate pCreateInfo values with result of
    // vkGetPhysicalDeviceQueueFamilyProperties
    if (pPhysicalDevice && pPhysicalDevice->gotQueueFamilyPropertyCount) {
        for (uint32_t i = 0; i < pCreateInfo->queueFamilyIndexCount; i++) {
            skip_call |= ValidateQueueFamilyIndex(my_data, pCreateInfo->pQueueFamilyIndices[i], pPhysicalDevice->numOfQueueFamilies,
                                                  pPhysicalDevice->physicalDevice, "vkCreateSwapchainKHR");
        }
    }

    if (pCreateInfo) {
        // Validate pCreateInfo->surface to make sure that
        // vkGetPhysicalDeviceSurfaceSupportKHR() reported this as a supported
        // surface:
        SwpSurface *pSurface = ((pPhysicalDevice) ? pPhysicalDevice->supportedSurfaces[pCreateInfo->surface] : NULL);
        if (!pSurface) {
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                                 reinterpret_cast<uint64_t>(device), __LINE__, VALIDATION_ERROR_01922, swapchain_layer_name,
                                 "The surface in pCreateInfo->surface, that was given to vkCreateSwapchainKHR(), must be a surface "
                                 "that is supported by the device as determined by vkGetPhysicalDeviceSurfaceSupportKHR().  "
                                 "However, vkGetPhysicalDeviceSurfaceSupportKHR() was never called with this surface. %s",
                                 validation_error_map[VALIDATION_ERROR_01922]);
        }
    }

    // Validate pCreateInfo->imageSharingMode and related values:
    if (pCreateInfo->imageSharingMode == VK_SHARING_MODE_CONCURRENT) {
        if (pCreateInfo->queueFamilyIndexCount <= 1) {
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                                 reinterpret_cast<uint64_t>(device), __LINE__, VALIDATION_ERROR_02338, swapchain_layer_name,
                                 "vkCreateSwapchainKHR() called with a supported pCreateInfo->sharingMode of (i.e. %s), but with a "
                                 "bad value(s) for pCreateInfo->queueFamilyIndexCount or pCreateInfo->pQueueFamilyIndices). %s",
                                 sharingModeStr(pCreateInfo->imageSharingMode), validation_error_map[VALIDATION_ERROR_02338]);
        }

        if (!pCreateInfo->pQueueFamilyIndices) {
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                                 reinterpret_cast<uint64_t>(device), __LINE__, VALIDATION_ERROR_02337, swapchain_layer_name,
                                 "vkCreateSwapchainKHR() called with a supported pCreateInfo->sharingMode of (i.e. %s), but with a "
                                 "bad value(s) for pCreateInfo->queueFamilyIndexCount or pCreateInfo->pQueueFamilyIndices). %s",
                                 sharingModeStr(pCreateInfo->imageSharingMode), validation_error_map[VALIDATION_ERROR_02337]);
        }
    }

    return skip_call;
}

VKAPI_ATTR VkResult VKAPI_CALL CreateSwapchainKHR(VkDevice device, const VkSwapchainCreateInfoKHR *pCreateInfo,
                                                  const VkAllocationCallbacks *pAllocator, VkSwapchainKHR *pSwapchain) {
    VkResult result = VK_SUCCESS;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);
    bool skip_call = validateCreateSwapchainKHR(device, pCreateInfo, pSwapchain);
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->device_dispatch_table->CreateSwapchainKHR(device, pCreateInfo, pAllocator, pSwapchain);
        lock.lock();

        if (result == VK_SUCCESS) {
            // Remember the swapchain's handle, and link it to the device:
            SwpDevice *pDevice = NULL;
            {
                auto it = my_data->deviceMap.find(device);
                pDevice = (it == my_data->deviceMap.end()) ? NULL : &it->second;
            }

            my_data->swapchainMap[*pSwapchain].swapchain = *pSwapchain;
            if (pDevice) {
                pDevice->swapchains[*pSwapchain] = &my_data->swapchainMap[*pSwapchain];
            }
            my_data->swapchainMap[*pSwapchain].pDevice = pDevice;
            my_data->swapchainMap[*pSwapchain].imageCount = 0;
            // Store a pointer to the surface
            SwpPhysicalDevice *pPhysicalDevice = pDevice->pPhysicalDevice;
            SwpInstance *pInstance = (pPhysicalDevice) ? pPhysicalDevice->pInstance : NULL;
            layer_data *my_instance_data =
                ((pInstance) ? GetLayerDataPtr(get_dispatch_key(pInstance->instance), layer_data_map) : NULL);
            SwpSurface *pSurface = ((my_data && pCreateInfo) ? &my_instance_data->surfaceMap[pCreateInfo->surface] : NULL);
            my_data->swapchainMap[*pSwapchain].pSurface = pSurface;
            if (pSurface) {
                pSurface->swapchains[*pSwapchain] = &my_data->swapchainMap[*pSwapchain];
            }
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR void VKAPI_CALL DestroySwapchainKHR(VkDevice device, VkSwapchainKHR swapchain, const VkAllocationCallbacks *pAllocator) {
    // TODOs:
    //
    // - Implement a check for validity language that reads: All uses of
    //   presentable images acquired from pname:swapchain must: have completed
    //   execution
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);

    // Regardless of skip_call value, do some internal cleanup:
    SwpSwapchain *pSwapchain = NULL;
    {
        auto it = my_data->swapchainMap.find(swapchain);
        pSwapchain = (it == my_data->swapchainMap.end()) ? NULL : &it->second;
    }
    if (pSwapchain) {
        // Delete the SwpSwapchain associated with this swapchain:
        if (pSwapchain->pDevice) {
            pSwapchain->pDevice->swapchains.erase(swapchain);
        }
        if (pSwapchain->pSurface) {
            pSwapchain->pSurface->swapchains.erase(swapchain);
        }
        my_data->swapchainMap.erase(swapchain);
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        my_data->device_dispatch_table->DestroySwapchainKHR(device, swapchain, pAllocator);
    }
}

VKAPI_ATTR VkResult VKAPI_CALL GetSwapchainImagesKHR(VkDevice device, VkSwapchainKHR swapchain, uint32_t *pSwapchainImageCount,
                                                     VkImage *pSwapchainImages) {
    VkResult result = VK_SUCCESS;
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    std::unique_lock<std::mutex> lock(global_lock);

    SwpSwapchain *pSwapchain = NULL;
    {
        auto it = my_data->swapchainMap.find(swapchain);
        pSwapchain = (it == my_data->swapchainMap.end()) ? NULL : &it->second;
    }
    if (pSwapchain && pSwapchainImages) {
        // Compare the preliminary value of *pSwapchainImageCount with the value this time:
        if (pSwapchain->imageCount == 0) {
            // Since we haven't recorded a preliminary value of *pSwapchainImageCount, that likely means that the application didn't
            // previously call this function with a NULL value of pSwapchainImages:
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_WARNING_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                                 reinterpret_cast<uint64_t>(device), __LINE__, SWAPCHAIN_PRIOR_COUNT, swapchain_layer_name,
                                 "vkGetSwapchainImagesKHR() called with non-NULL pSwapchainImageCount; but no prior positive "
                                 "value has been seen for pSwapchainImages.");
        } else if (*pSwapchainImageCount > pSwapchain->imageCount) {
            skip_call |= log_msg(my_data->report_data, VK_DEBUG_REPORT_ERROR_BIT_EXT, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT,
                                 reinterpret_cast<uint64_t>(device), __LINE__, SWAPCHAIN_INVALID_COUNT, swapchain_layer_name,
                                 "vkGetSwapchainImagesKHR() called with non-NULL pSwapchainImageCount, and with "
                                 "pSwapchainImages set to a value (%d) that is greater than the value (%d) that was returned when "
                                 "pSwapchainImageCount was NULL.",
                                 *pSwapchainImageCount, pSwapchain->imageCount);
        }
    }
    lock.unlock();

    if (!skip_call) {
        // Call down the call chain:
        result = my_data->device_dispatch_table->GetSwapchainImagesKHR(device, swapchain, pSwapchainImageCount, pSwapchainImages);
        lock.lock();

        // Obtain this pointer again after locking:
        {
            auto it = my_data->swapchainMap.find(swapchain);
            pSwapchain = (it == my_data->swapchainMap.end()) ? NULL : &it->second;
        }
        if ((result == VK_SUCCESS) && pSwapchain && !pSwapchainImages && pSwapchainImageCount) {
            // Record the result of this preliminary query:
            pSwapchain->imageCount = *pSwapchainImageCount;
        } else if ((result == VK_SUCCESS) && pSwapchain && pSwapchainImages && pSwapchainImageCount &&
                   (*pSwapchainImageCount > 0)) {
            // Record the images and their state:
            pSwapchain->imageCount = *pSwapchainImageCount;
        }
        lock.unlock();

        return result;
    }
    return VK_ERROR_VALIDATION_FAILED_EXT;
}

VKAPI_ATTR void VKAPI_CALL GetDeviceQueue(VkDevice device, uint32_t queueFamilyIndex, uint32_t queueIndex, VkQueue *pQueue) {
    bool skip_call = false;
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);

    if (!skip_call) {
        // Call down the call chain:
        my_data->device_dispatch_table->GetDeviceQueue(device, queueFamilyIndex, queueIndex, pQueue);

        // Remember the queue's handle, and link it to the device:
        std::lock_guard<std::mutex> lock(global_lock);
        SwpDevice *pDevice = NULL;
        {
            auto it = my_data->deviceMap.find(device);
            pDevice = (it == my_data->deviceMap.end()) ? NULL : &it->second;
        }
        my_data->queueMap[&pQueue].queue = *pQueue;
        if (pDevice) {
            pDevice->queues[*pQueue] = &my_data->queueMap[*pQueue];
        }
        my_data->queueMap[&pQueue].pDevice = pDevice;
        my_data->queueMap[&pQueue].queueFamilyIndex = queueFamilyIndex;
    }
}

VKAPI_ATTR VkResult VKAPI_CALL CreateDebugReportCallbackEXT(VkInstance instance,
                                                            const VkDebugReportCallbackCreateInfoEXT *pCreateInfo,
                                                            const VkAllocationCallbacks *pAllocator,
                                                            VkDebugReportCallbackEXT *pMsgCallback) {
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    VkResult result =
        my_data->instance_dispatch_table->CreateDebugReportCallbackEXT(instance, pCreateInfo, pAllocator, pMsgCallback);
    if (VK_SUCCESS == result) {
        std::lock_guard<std::mutex> lock(global_lock);
        result = layer_create_msg_callback(my_data->report_data, false, pCreateInfo, pAllocator, pMsgCallback);
    }
    return result;
}

VKAPI_ATTR void VKAPI_CALL DestroyDebugReportCallbackEXT(VkInstance instance, VkDebugReportCallbackEXT msgCallback,
                                                         const VkAllocationCallbacks *pAllocator) {
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    my_data->instance_dispatch_table->DestroyDebugReportCallbackEXT(instance, msgCallback, pAllocator);
    std::lock_guard<std::mutex> lock(global_lock);
    layer_destroy_msg_callback(my_data->report_data, msgCallback, pAllocator);
}

VKAPI_ATTR void VKAPI_CALL DebugReportMessageEXT(VkInstance instance, VkDebugReportFlagsEXT flags,
                                                 VkDebugReportObjectTypeEXT objType, uint64_t object, size_t location,
                                                 int32_t msgCode, const char *pLayerPrefix, const char *pMsg) {
    layer_data *my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    my_data->instance_dispatch_table->DebugReportMessageEXT(instance, flags, objType, object, location, msgCode, pLayerPrefix,
                                                            pMsg);
}

VKAPI_ATTR VkResult VKAPI_CALL EnumerateInstanceLayerProperties(uint32_t *pCount, VkLayerProperties *pProperties) {
    return util_GetLayerProperties(1, &swapchain_layer, pCount, pProperties);
}

VKAPI_ATTR VkResult VKAPI_CALL EnumerateDeviceLayerProperties(VkPhysicalDevice physicalDevice, uint32_t *pCount,
                                                              VkLayerProperties *pProperties) {
    return util_GetLayerProperties(1, &swapchain_layer, pCount, pProperties);
}

VKAPI_ATTR VkResult VKAPI_CALL EnumerateInstanceExtensionProperties(const char *pLayerName, uint32_t *pCount,
                                                                    VkExtensionProperties *pProperties) {
    if (pLayerName && !strcmp(pLayerName, swapchain_layer.layerName))
        return util_GetExtensionProperties(1, instance_extensions, pCount, pProperties);

    return VK_ERROR_LAYER_NOT_PRESENT;
}

VKAPI_ATTR VkResult VKAPI_CALL EnumerateDeviceExtensionProperties(VkPhysicalDevice physicalDevice, const char *pLayerName,
                                                                  uint32_t *pCount, VkExtensionProperties *pProperties) {
    if (pLayerName && !strcmp(pLayerName, swapchain_layer.layerName))
        return util_GetExtensionProperties(0, nullptr, pCount, pProperties);

    assert(physicalDevice);

    dispatch_key key = get_dispatch_key(physicalDevice);
    layer_data *my_data = GetLayerDataPtr(key, layer_data_map);
    return my_data->instance_dispatch_table->EnumerateDeviceExtensionProperties(physicalDevice, NULL, pCount, pProperties);
}

static PFN_vkVoidFunction intercept_core_instance_command(const char *name);

static PFN_vkVoidFunction intercept_khr_surface_command(const char *name, VkInstance instance);

static PFN_vkVoidFunction intercept_extension_instance_commands(const char *name);

static PFN_vkVoidFunction intercept_core_device_command(const char *name);

static PFN_vkVoidFunction intercept_khr_swapchain_command(const char *name, VkDevice dev);

VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL GetDeviceProcAddr(VkDevice device, const char *funcName) {
    PFN_vkVoidFunction proc = intercept_core_device_command(funcName);
    if (proc) return proc;

    assert(device);

    layer_data *my_data;

    my_data = GetLayerDataPtr(get_dispatch_key(device), layer_data_map);
    VkLayerDispatchTable *pDisp = my_data->device_dispatch_table;

    proc = intercept_khr_swapchain_command(funcName, device);
    if (proc) return proc;

    if (pDisp->GetDeviceProcAddr == NULL) return NULL;
    return pDisp->GetDeviceProcAddr(device, funcName);
}

VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL GetInstanceProcAddr(VkInstance instance, const char *funcName) {
    PFN_vkVoidFunction proc = intercept_core_instance_command(funcName);
    if (!proc) proc = intercept_core_device_command(funcName);
    if (!proc) proc = intercept_khr_swapchain_command(funcName, VK_NULL_HANDLE);
    if (proc) return proc;

    assert(instance);

    layer_data *my_data;
    my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    VkLayerInstanceDispatchTable *pTable = my_data->instance_dispatch_table;

    proc = debug_report_get_instance_proc_addr(my_data->report_data, funcName);
    if (!proc) proc = intercept_khr_surface_command(funcName, instance);
    if (!proc) proc = intercept_extension_instance_commands(funcName);
    if (proc) return proc;

    if (pTable->GetInstanceProcAddr == NULL) return NULL;
    return pTable->GetInstanceProcAddr(instance, funcName);
}

VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL GetPhysicalDeviceProcAddr(VkInstance instance, const char *funcName) {
    assert(instance);

    layer_data *my_data;
    my_data = GetLayerDataPtr(get_dispatch_key(instance), layer_data_map);
    VkLayerInstanceDispatchTable *pTable = my_data->instance_dispatch_table;

    if (pTable->GetPhysicalDeviceProcAddr == NULL) return NULL;
    return pTable->GetPhysicalDeviceProcAddr(instance, funcName);
}

static PFN_vkVoidFunction intercept_core_instance_command(const char *name) {
    static const struct {
        const char *name;
        PFN_vkVoidFunction proc;
    } core_instance_commands[] = {
        {"vkGetInstanceProcAddr", reinterpret_cast<PFN_vkVoidFunction>(GetInstanceProcAddr)},
        {"vkCreateInstance", reinterpret_cast<PFN_vkVoidFunction>(CreateInstance)},
        {"vkDestroyInstance", reinterpret_cast<PFN_vkVoidFunction>(DestroyInstance)},
        {"vkCreateDevice", reinterpret_cast<PFN_vkVoidFunction>(CreateDevice)},
        {"vkEnumeratePhysicalDevices", reinterpret_cast<PFN_vkVoidFunction>(EnumeratePhysicalDevices)},
        {"vk_layerGetPhysicalDeviceProcAddr", reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceProcAddr)},
        {"vkEnumerateInstanceLayerProperties", reinterpret_cast<PFN_vkVoidFunction>(EnumerateInstanceLayerProperties)},
        {"vkEnumerateDeviceLayerProperties", reinterpret_cast<PFN_vkVoidFunction>(EnumerateDeviceLayerProperties)},
        {"vkEnumerateInstanceExtensionProperties", reinterpret_cast<PFN_vkVoidFunction>(EnumerateInstanceExtensionProperties)},
        {"vkEnumerateDeviceExtensionProperties", reinterpret_cast<PFN_vkVoidFunction>(EnumerateDeviceExtensionProperties)},
        {"vkGetPhysicalDeviceQueueFamilyProperties", reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceQueueFamilyProperties)},
    };

    for (size_t i = 0; i < ARRAY_SIZE(core_instance_commands); i++) {
        if (!strcmp(core_instance_commands[i].name, name)) return core_instance_commands[i].proc;
    }

    return nullptr;
}

static PFN_vkVoidFunction intercept_khr_surface_command(const char *name, VkInstance instance) {
    static const struct {
        const char *name;
        PFN_vkVoidFunction proc;
    } khr_surface_commands[] = {
#ifdef VK_USE_PLATFORM_ANDROID_KHR
        {"vkCreateAndroidSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateAndroidSurfaceKHR)},
#endif  // VK_USE_PLATFORM_ANDROID_KHR
#ifdef VK_USE_PLATFORM_MIR_KHR
        {"vkCreateMirSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateMirSurfaceKHR)},
        {"vkGetPhysicalDeviceMirPresentationSupportKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceMirPresentationSupportKHR)},
#endif  // VK_USE_PLATFORM_MIR_KHR
#ifdef VK_USE_PLATFORM_WAYLAND_KHR
        {"vkCreateWaylandSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateWaylandSurfaceKHR)},
        {"vkGetPhysicalDeviceWaylandPresentationSupportKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceWaylandPresentationSupportKHR)},
#endif  // VK_USE_PLATFORM_WAYLAND_KHR
#ifdef VK_USE_PLATFORM_WIN32_KHR
        {"vkCreateWin32SurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateWin32SurfaceKHR)},
        {"vkGetPhysicalDeviceWin32PresentationSupportKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceWin32PresentationSupportKHR)},
#endif  // VK_USE_PLATFORM_WIN32_KHR
#ifdef VK_USE_PLATFORM_XCB_KHR
        {"vkCreateXcbSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateXcbSurfaceKHR)},
        {"vkGetPhysicalDeviceXcbPresentationSupportKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceXcbPresentationSupportKHR)},
#endif  // VK_USE_PLATFORM_XCB_KHR
#ifdef VK_USE_PLATFORM_XLIB_KHR
        {"vkCreateXlibSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateXlibSurfaceKHR)},
        {"vkGetPhysicalDeviceXlibPresentationSupportKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceXlibPresentationSupportKHR)},
#endif  // VK_USE_PLATFORM_XLIB_KHR
        {"vkDestroySurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(DestroySurfaceKHR)},
        {"vkGetPhysicalDeviceSurfaceSupportKHR", reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceSurfaceSupportKHR)},
        {"vkGetPhysicalDeviceDisplayPlanePropertiesKHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceDisplayPlanePropertiesKHR)},
        {"vkGetDisplayPlaneSupportedDisplaysKHR", reinterpret_cast<PFN_vkVoidFunction>(GetDisplayPlaneSupportedDisplaysKHR)},
        {"vkGetDisplayPlaneCapabilitiesKHR", reinterpret_cast<PFN_vkVoidFunction>(GetDisplayPlaneCapabilitiesKHR)},
        {"vkCreateDisplayPlaneSurfaceKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateDisplayPlaneSurfaceKHR)},
    };

    // do not check if VK_KHR_*_surface is enabled (why?)

    for (size_t i = 0; i < ARRAY_SIZE(khr_surface_commands); i++) {
        if (!strcmp(khr_surface_commands[i].name, name)) return khr_surface_commands[i].proc;
    }

    return nullptr;
}

static PFN_vkVoidFunction intercept_extension_instance_commands(const char *name) {
    static const struct {
        const char *name;
        PFN_vkVoidFunction proc;
    } instance_extension_commands[] = {
        {"vkGetPhysicalDeviceQueueFamilyProperties2KHR",
         reinterpret_cast<PFN_vkVoidFunction>(GetPhysicalDeviceQueueFamilyProperties2KHR)},
    };

    for (size_t i = 0; i < ARRAY_SIZE(instance_extension_commands); i++) {
        if (!strcmp(instance_extension_commands[i].name, name)) {
            return instance_extension_commands[i].proc;
        }
    }
    return nullptr;
}

static PFN_vkVoidFunction intercept_core_device_command(const char *name) {
    static const struct {
        const char *name;
        PFN_vkVoidFunction proc;
    } core_device_commands[] = {
        {"vkGetDeviceProcAddr", reinterpret_cast<PFN_vkVoidFunction>(GetDeviceProcAddr)},
        {"vkDestroyDevice", reinterpret_cast<PFN_vkVoidFunction>(DestroyDevice)},
        {"vkGetDeviceQueue", reinterpret_cast<PFN_vkVoidFunction>(GetDeviceQueue)},
    };

    for (size_t i = 0; i < ARRAY_SIZE(core_device_commands); i++) {
        if (!strcmp(core_device_commands[i].name, name)) return core_device_commands[i].proc;
    }

    return nullptr;
}

static PFN_vkVoidFunction intercept_khr_swapchain_command(const char *name, VkDevice dev) {
    static const struct {
        const char *name;
        PFN_vkVoidFunction proc;
    } khr_swapchain_commands[] = {
        {"vkCreateSwapchainKHR", reinterpret_cast<PFN_vkVoidFunction>(CreateSwapchainKHR)},
        {"vkDestroySwapchainKHR", reinterpret_cast<PFN_vkVoidFunction>(DestroySwapchainKHR)},
        {"vkGetSwapchainImagesKHR", reinterpret_cast<PFN_vkVoidFunction>(GetSwapchainImagesKHR)},
    };

    // do not check if VK_KHR_swapchain is enabled (why?)

    for (size_t i = 0; i < ARRAY_SIZE(khr_swapchain_commands); i++) {
        if (!strcmp(khr_swapchain_commands[i].name, name)) return khr_swapchain_commands[i].proc;
    }

    return nullptr;
}

}  // namespace swapchain

// vk_layer_logging.h expects these to be defined

VKAPI_ATTR VkResult VKAPI_CALL vkCreateDebugReportCallbackEXT(VkInstance instance,
                                                              const VkDebugReportCallbackCreateInfoEXT *pCreateInfo,
                                                              const VkAllocationCallbacks *pAllocator,
                                                              VkDebugReportCallbackEXT *pMsgCallback) {
    return swapchain::CreateDebugReportCallbackEXT(instance, pCreateInfo, pAllocator, pMsgCallback);
}

VKAPI_ATTR void VKAPI_CALL vkDestroyDebugReportCallbackEXT(VkInstance instance, VkDebugReportCallbackEXT msgCallback,
                                                           const VkAllocationCallbacks *pAllocator) {
    swapchain::DestroyDebugReportCallbackEXT(instance, msgCallback, pAllocator);
}

VKAPI_ATTR void VKAPI_CALL vkDebugReportMessageEXT(VkInstance instance, VkDebugReportFlagsEXT flags,
                                                   VkDebugReportObjectTypeEXT objType, uint64_t object, size_t location,
                                                   int32_t msgCode, const char *pLayerPrefix, const char *pMsg) {
    swapchain::DebugReportMessageEXT(instance, flags, objType, object, location, msgCode, pLayerPrefix, pMsg);
}

// loader-layer interface v0, just wrappers since there is only a layer

VK_LAYER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateInstanceExtensionProperties(const char *pLayerName, uint32_t *pCount,
                                                                                      VkExtensionProperties *pProperties) {
    return swapchain::EnumerateInstanceExtensionProperties(pLayerName, pCount, pProperties);
}

VK_LAYER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateInstanceLayerProperties(uint32_t *pCount,
                                                                                  VkLayerProperties *pProperties) {
    return swapchain::EnumerateInstanceLayerProperties(pCount, pProperties);
}

VK_LAYER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateDeviceLayerProperties(VkPhysicalDevice physicalDevice, uint32_t *pCount,
                                                                                VkLayerProperties *pProperties) {
    // the layer command handles VK_NULL_HANDLE just fine internally
    assert(physicalDevice == VK_NULL_HANDLE);
    return swapchain::EnumerateDeviceLayerProperties(VK_NULL_HANDLE, pCount, pProperties);
}

VK_LAYER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateDeviceExtensionProperties(VkPhysicalDevice physicalDevice,
                                                                                    const char *pLayerName, uint32_t *pCount,
                                                                                    VkExtensionProperties *pProperties) {
    // the layer command handles VK_NULL_HANDLE just fine internally
    assert(physicalDevice == VK_NULL_HANDLE);
    return swapchain::EnumerateDeviceExtensionProperties(VK_NULL_HANDLE, pLayerName, pCount, pProperties);
}

VK_LAYER_EXPORT VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vkGetDeviceProcAddr(VkDevice dev, const char *funcName) {
    return swapchain::GetDeviceProcAddr(dev, funcName);
}

VK_LAYER_EXPORT VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vkGetInstanceProcAddr(VkInstance instance, const char *funcName) {
    return swapchain::GetInstanceProcAddr(instance, funcName);
}

VK_LAYER_EXPORT VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vk_layerGetPhysicalDeviceProcAddr(VkInstance instance,
                                                                                           const char *funcName) {
    return swapchain::GetPhysicalDeviceProcAddr(instance, funcName);
}

VK_LAYER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkNegotiateLoaderLayerInterfaceVersion(VkNegotiateLayerInterface *pVersionStruct) {
    assert(pVersionStruct != NULL);
    assert(pVersionStruct->sType == LAYER_NEGOTIATE_INTERFACE_STRUCT);

    // Fill in the function pointers if our version is at least capable of having the structure contain them.
    if (pVersionStruct->loaderLayerInterfaceVersion >= 2) {
        pVersionStruct->pfnGetInstanceProcAddr = vkGetInstanceProcAddr;
        pVersionStruct->pfnGetDeviceProcAddr = vkGetDeviceProcAddr;
        pVersionStruct->pfnGetPhysicalDeviceProcAddr = vk_layerGetPhysicalDeviceProcAddr;
    }

    if (pVersionStruct->loaderLayerInterfaceVersion < CURRENT_LOADER_LAYER_INTERFACE_VERSION) {
        swapchain::loader_layer_if_version = pVersionStruct->loaderLayerInterfaceVersion;
    } else if (pVersionStruct->loaderLayerInterfaceVersion > CURRENT_LOADER_LAYER_INTERFACE_VERSION) {
        pVersionStruct->loaderLayerInterfaceVersion = CURRENT_LOADER_LAYER_INTERFACE_VERSION;
    }

    return VK_SUCCESS;
}