#include "vulkan_wrapper.h"
#include <dlfcn.h>
#if defined(__APPLE__) && !defined(VTK_NO_VULKAN_LOADING)
#include <stdlib.h>
#endif

bool vtk_load_vulkan_symbols() {
#ifdef VTK_NO_VULKAN_LOADING
    return true;
#else

#ifdef __APPLE__
    // Setup so that the vulkan layer can load from our bundled macOS/MoltenVK SDK:
#define xstr(s) str(s)
#define str(s) #s
    setenv("VK_ICD_FILENAMES", xstr(VTK_ICD_FILENAMES), 1);
    setenv("VK_LAYER_PATH", xstr(VTK_LAYER_PATH), 1);
#undef xstr
#undef str
#endif

    void *libvulkan = dlopen(
#ifdef __APPLE__
		    "libvulkan.dylib"
#else
		    "libvulkan.so"
#endif
		    , RTLD_NOW | RTLD_LOCAL);
    if (!libvulkan) {
        return false;
    }

    vkCreateInstance = (PFN_vkCreateInstance) dlsym(libvulkan, "vkCreateInstance");
    vkDestroyInstance = (PFN_vkDestroyInstance) dlsym(libvulkan, "vkDestroyInstance");
    vkEnumeratePhysicalDevices = (PFN_vkEnumeratePhysicalDevices) dlsym(libvulkan, "vkEnumeratePhysicalDevices");
    vkGetPhysicalDeviceFeatures = (PFN_vkGetPhysicalDeviceFeatures) dlsym(libvulkan, "vkGetPhysicalDeviceFeatures");
    vkGetPhysicalDeviceFormatProperties = (PFN_vkGetPhysicalDeviceFormatProperties) dlsym(libvulkan,
                                                                                                          "vkGetPhysicalDeviceFormatProperties");
    vkGetPhysicalDeviceImageFormatProperties = (PFN_vkGetPhysicalDeviceImageFormatProperties) dlsym(libvulkan,
                                                                                                                    "vkGetPhysicalDeviceImageFormatProperties");
    vkGetPhysicalDeviceProperties = (PFN_vkGetPhysicalDeviceProperties) dlsym(libvulkan, "vkGetPhysicalDeviceProperties");
    vkGetPhysicalDeviceQueueFamilyProperties = (PFN_vkGetPhysicalDeviceQueueFamilyProperties) dlsym(libvulkan,
                                                                                                                    "vkGetPhysicalDeviceQueueFamilyProperties");
    vkGetPhysicalDeviceMemoryProperties = (PFN_vkGetPhysicalDeviceMemoryProperties) dlsym(libvulkan,
                                                                                                          "vkGetPhysicalDeviceMemoryProperties");
    vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr) dlsym(libvulkan, "vkGetInstanceProcAddr");
    vkGetDeviceProcAddr = (PFN_vkGetDeviceProcAddr) dlsym(libvulkan, "vkGetDeviceProcAddr");
    vkCreateDevice = (PFN_vkCreateDevice) dlsym(libvulkan, "vkCreateDevice");
    vkDestroyDevice = (PFN_vkDestroyDevice) dlsym(libvulkan, "vkDestroyDevice");
    vkEnumerateInstanceExtensionProperties = (PFN_vkEnumerateInstanceExtensionProperties) dlsym(libvulkan,
                                                                                                                "vkEnumerateInstanceExtensionProperties");
    vkEnumerateDeviceExtensionProperties = (PFN_vkEnumerateDeviceExtensionProperties) dlsym(libvulkan,
                                                                                                            "vkEnumerateDeviceExtensionProperties");
    vkEnumerateInstanceLayerProperties = (PFN_vkEnumerateInstanceLayerProperties) dlsym(libvulkan,
                                                                                                        "vkEnumerateInstanceLayerProperties");
    vkEnumerateDeviceLayerProperties = (PFN_vkEnumerateDeviceLayerProperties) dlsym(libvulkan,
                                                                                                    "vkEnumerateDeviceLayerProperties");
    vkGetDeviceQueue = (PFN_vkGetDeviceQueue) dlsym(libvulkan, "vkGetDeviceQueue");
    vkQueueSubmit = (PFN_vkQueueSubmit) dlsym(libvulkan, "vkQueueSubmit");
    vkQueueWaitIdle = (PFN_vkQueueWaitIdle) dlsym(libvulkan, "vkQueueWaitIdle");
    vkDeviceWaitIdle = (PFN_vkDeviceWaitIdle) dlsym(libvulkan, "vkDeviceWaitIdle");
    vkAllocateMemory = (PFN_vkAllocateMemory) dlsym(libvulkan, "vkAllocateMemory");
    vkFreeMemory = (PFN_vkFreeMemory) dlsym(libvulkan, "vkFreeMemory");
    vkMapMemory = (PFN_vkMapMemory) dlsym(libvulkan, "vkMapMemory");
    vkUnmapMemory = (PFN_vkUnmapMemory) dlsym(libvulkan, "vkUnmapMemory");
    vkFlushMappedMemoryRanges = (PFN_vkFlushMappedMemoryRanges) dlsym(libvulkan, "vkFlushMappedMemoryRanges");
    vkInvalidateMappedMemoryRanges = (PFN_vkInvalidateMappedMemoryRanges) dlsym(libvulkan,
                                                                                                "vkInvalidateMappedMemoryRanges");
    vkGetDeviceMemoryCommitment = (PFN_vkGetDeviceMemoryCommitment) dlsym(libvulkan, "vkGetDeviceMemoryCommitment");
    vkBindBufferMemory = (PFN_vkBindBufferMemory) dlsym(libvulkan, "vkBindBufferMemory");
    vkBindImageMemory = (PFN_vkBindImageMemory) dlsym(libvulkan, "vkBindImageMemory");
    vkGetBufferMemoryRequirements = (PFN_vkGetBufferMemoryRequirements) dlsym(libvulkan, "vkGetBufferMemoryRequirements");
    vkGetImageMemoryRequirements = (PFN_vkGetImageMemoryRequirements) dlsym(libvulkan, "vkGetImageMemoryRequirements");
    vkGetImageSparseMemoryRequirements = (PFN_vkGetImageSparseMemoryRequirements) dlsym(libvulkan,
                                                                                                        "vkGetImageSparseMemoryRequirements");
    vkGetPhysicalDeviceSparseImageFormatProperties = (PFN_vkGetPhysicalDeviceSparseImageFormatProperties) dlsym(libvulkan,
                                                                                                                                "vkGetPhysicalDeviceSparseImageFormatProperties");
    vkQueueBindSparse = (PFN_vkQueueBindSparse) dlsym(libvulkan, "vkQueueBindSparse");
    vkCreateFence = (PFN_vkCreateFence) dlsym(libvulkan, "vkCreateFence");
    vkDestroyFence = (PFN_vkDestroyFence) dlsym(libvulkan, "vkDestroyFence");
    vkResetFences = (PFN_vkResetFences) dlsym(libvulkan, "vkResetFences");
    vkGetFenceStatus = (PFN_vkGetFenceStatus) dlsym(libvulkan, "vkGetFenceStatus");
    vkWaitForFences = (PFN_vkWaitForFences) dlsym(libvulkan, "vkWaitForFences");
    vkCreateSemaphore = (PFN_vkCreateSemaphore) dlsym(libvulkan, "vkCreateSemaphore");
    vkDestroySemaphore = (PFN_vkDestroySemaphore) dlsym(libvulkan, "vkDestroySemaphore");
    vkCreateEvent = (PFN_vkCreateEvent) dlsym(libvulkan, "vkCreateEvent");
    vkDestroyEvent = (PFN_vkDestroyEvent) dlsym(libvulkan, "vkDestroyEvent");
    vkGetEventStatus = (PFN_vkGetEventStatus) dlsym(libvulkan, "vkGetEventStatus");
    vkSetEvent = (PFN_vkSetEvent) dlsym(libvulkan, "vkSetEvent");
    vkResetEvent = (PFN_vkResetEvent) dlsym(libvulkan, "vkResetEvent");
    vkCreateQueryPool = (PFN_vkCreateQueryPool) dlsym(libvulkan, "vkCreateQueryPool");
    vkDestroyQueryPool = (PFN_vkDestroyQueryPool) dlsym(libvulkan, "vkDestroyQueryPool");
    vkGetQueryPoolResults = (PFN_vkGetQueryPoolResults) dlsym(libvulkan, "vkGetQueryPoolResults");
    vkCreateBuffer = (PFN_vkCreateBuffer) dlsym(libvulkan, "vkCreateBuffer");
    vkDestroyBuffer = (PFN_vkDestroyBuffer) dlsym(libvulkan, "vkDestroyBuffer");
    vkCreateBufferView = (PFN_vkCreateBufferView) dlsym(libvulkan, "vkCreateBufferView");
    vkDestroyBufferView = (PFN_vkDestroyBufferView) dlsym(libvulkan, "vkDestroyBufferView");
    vkCreateImage = (PFN_vkCreateImage) dlsym(libvulkan, "vkCreateImage");
    vkDestroyImage = (PFN_vkDestroyImage) dlsym(libvulkan, "vkDestroyImage");
    vkGetImageSubresourceLayout = (PFN_vkGetImageSubresourceLayout) dlsym(libvulkan, "vkGetImageSubresourceLayout");
    vkCreateImageView = (PFN_vkCreateImageView) dlsym(libvulkan, "vkCreateImageView");
    vkDestroyImageView = (PFN_vkDestroyImageView) dlsym(libvulkan, "vkDestroyImageView");
    vkCreateShaderModule = (PFN_vkCreateShaderModule) dlsym(libvulkan, "vkCreateShaderModule");
    vkDestroyShaderModule = (PFN_vkDestroyShaderModule) dlsym(libvulkan, "vkDestroyShaderModule");
    vkCreatePipelineCache = (PFN_vkCreatePipelineCache) dlsym(libvulkan, "vkCreatePipelineCache");
    vkDestroyPipelineCache = (PFN_vkDestroyPipelineCache) dlsym(libvulkan, "vkDestroyPipelineCache");
    vkGetPipelineCacheData = (PFN_vkGetPipelineCacheData) dlsym(libvulkan, "vkGetPipelineCacheData");
    vkMergePipelineCaches = (PFN_vkMergePipelineCaches) dlsym(libvulkan, "vkMergePipelineCaches");
    vkCreateGraphicsPipelines = (PFN_vkCreateGraphicsPipelines) dlsym(libvulkan, "vkCreateGraphicsPipelines");
    vkCreateComputePipelines = (PFN_vkCreateComputePipelines) dlsym(libvulkan, "vkCreateComputePipelines");
    vkDestroyPipeline = (PFN_vkDestroyPipeline) dlsym(libvulkan, "vkDestroyPipeline");
    vkCreatePipelineLayout = (PFN_vkCreatePipelineLayout) dlsym(libvulkan, "vkCreatePipelineLayout");
    vkDestroyPipelineLayout = (PFN_vkDestroyPipelineLayout) dlsym(libvulkan, "vkDestroyPipelineLayout");
    vkCreateSampler = (PFN_vkCreateSampler) dlsym(libvulkan, "vkCreateSampler");
    vkDestroySampler = (PFN_vkDestroySampler) dlsym(libvulkan, "vkDestroySampler");
    vkCreateDescriptorSetLayout = (PFN_vkCreateDescriptorSetLayout) dlsym(libvulkan, "vkCreateDescriptorSetLayout");
    vkDestroyDescriptorSetLayout = (PFN_vkDestroyDescriptorSetLayout) dlsym(libvulkan, "vkDestroyDescriptorSetLayout");
    vkCreateDescriptorPool = (PFN_vkCreateDescriptorPool) dlsym(libvulkan, "vkCreateDescriptorPool");
    vkDestroyDescriptorPool = (PFN_vkDestroyDescriptorPool) dlsym(libvulkan, "vkDestroyDescriptorPool");
    vkResetDescriptorPool = (PFN_vkResetDescriptorPool) dlsym(libvulkan, "vkResetDescriptorPool");
    vkAllocateDescriptorSets = (PFN_vkAllocateDescriptorSets) dlsym(libvulkan, "vkAllocateDescriptorSets");
    vkFreeDescriptorSets = (PFN_vkFreeDescriptorSets) dlsym(libvulkan, "vkFreeDescriptorSets");
    vkUpdateDescriptorSets = (PFN_vkUpdateDescriptorSets) dlsym(libvulkan, "vkUpdateDescriptorSets");
    vkCreateFramebuffer = (PFN_vkCreateFramebuffer) dlsym(libvulkan, "vkCreateFramebuffer");
    vkDestroyFramebuffer = (PFN_vkDestroyFramebuffer) dlsym(libvulkan, "vkDestroyFramebuffer");
    vkCreateRenderPass = (PFN_vkCreateRenderPass) dlsym(libvulkan, "vkCreateRenderPass");
    vkDestroyRenderPass = (PFN_vkDestroyRenderPass) dlsym(libvulkan, "vkDestroyRenderPass");
    vkGetRenderAreaGranularity = (PFN_vkGetRenderAreaGranularity) dlsym(libvulkan, "vkGetRenderAreaGranularity");
    vkCreateCommandPool = (PFN_vkCreateCommandPool) dlsym(libvulkan, "vkCreateCommandPool");
    vkDestroyCommandPool = (PFN_vkDestroyCommandPool) dlsym(libvulkan, "vkDestroyCommandPool");
    vkResetCommandPool = (PFN_vkResetCommandPool) dlsym(libvulkan, "vkResetCommandPool");
    vkAllocateCommandBuffers = (PFN_vkAllocateCommandBuffers) dlsym(libvulkan, "vkAllocateCommandBuffers");
    vkFreeCommandBuffers = (PFN_vkFreeCommandBuffers) dlsym(libvulkan, "vkFreeCommandBuffers");
    vkBeginCommandBuffer = (PFN_vkBeginCommandBuffer) dlsym(libvulkan, "vkBeginCommandBuffer");
    vkEndCommandBuffer = (PFN_vkEndCommandBuffer) dlsym(libvulkan, "vkEndCommandBuffer");
    vkResetCommandBuffer = (PFN_vkResetCommandBuffer) dlsym(libvulkan, "vkResetCommandBuffer");
    vkCmdBindPipeline = (PFN_vkCmdBindPipeline) dlsym(libvulkan, "vkCmdBindPipeline");
    vkCmdSetViewport = (PFN_vkCmdSetViewport) dlsym(libvulkan, "vkCmdSetViewport");
    vkCmdSetScissor = (PFN_vkCmdSetScissor) dlsym(libvulkan, "vkCmdSetScissor");
    vkCmdSetLineWidth = (PFN_vkCmdSetLineWidth) dlsym(libvulkan, "vkCmdSetLineWidth");
    vkCmdSetDepthBias = (PFN_vkCmdSetDepthBias) dlsym(libvulkan, "vkCmdSetDepthBias");
    vkCmdSetBlendConstants = (PFN_vkCmdSetBlendConstants) dlsym(libvulkan, "vkCmdSetBlendConstants");
    vkCmdSetDepthBounds = (PFN_vkCmdSetDepthBounds) dlsym(libvulkan, "vkCmdSetDepthBounds");
    vkCmdSetStencilCompareMask = (PFN_vkCmdSetStencilCompareMask) dlsym(libvulkan, "vkCmdSetStencilCompareMask");
    vkCmdSetStencilWriteMask = (PFN_vkCmdSetStencilWriteMask) dlsym(libvulkan, "vkCmdSetStencilWriteMask");
    vkCmdSetStencilReference = (PFN_vkCmdSetStencilReference) dlsym(libvulkan, "vkCmdSetStencilReference");
    vkCmdBindDescriptorSets = (PFN_vkCmdBindDescriptorSets) dlsym(libvulkan, "vkCmdBindDescriptorSets");
    vkCmdBindIndexBuffer = (PFN_vkCmdBindIndexBuffer) dlsym(libvulkan, "vkCmdBindIndexBuffer");
    vkCmdBindVertexBuffers = (PFN_vkCmdBindVertexBuffers) dlsym(libvulkan, "vkCmdBindVertexBuffers");
    vkCmdDraw = (PFN_vkCmdDraw) dlsym(libvulkan, "vkCmdDraw");
    vkCmdDrawIndexed = (PFN_vkCmdDrawIndexed) dlsym(libvulkan, "vkCmdDrawIndexed");
    vkCmdDrawIndirect = (PFN_vkCmdDrawIndirect) dlsym(libvulkan, "vkCmdDrawIndirect");
    vkCmdDrawIndexedIndirect = (PFN_vkCmdDrawIndexedIndirect) dlsym(libvulkan, "vkCmdDrawIndexedIndirect");
    vkCmdDispatch = (PFN_vkCmdDispatch) dlsym(libvulkan, "vkCmdDispatch");
    vkCmdDispatchIndirect = (PFN_vkCmdDispatchIndirect) dlsym(libvulkan, "vkCmdDispatchIndirect");
    vkCmdCopyBuffer = (PFN_vkCmdCopyBuffer) dlsym(libvulkan, "vkCmdCopyBuffer");
    vkCmdCopyImage = (PFN_vkCmdCopyImage) dlsym(libvulkan, "vkCmdCopyImage");
    vkCmdBlitImage = (PFN_vkCmdBlitImage) dlsym(libvulkan, "vkCmdBlitImage");
    vkCmdCopyBufferToImage = (PFN_vkCmdCopyBufferToImage) dlsym(libvulkan, "vkCmdCopyBufferToImage");
    vkCmdCopyImageToBuffer = (PFN_vkCmdCopyImageToBuffer) dlsym(libvulkan, "vkCmdCopyImageToBuffer");
    vkCmdUpdateBuffer = (PFN_vkCmdUpdateBuffer) dlsym(libvulkan, "vkCmdUpdateBuffer");
    vkCmdFillBuffer = (PFN_vkCmdFillBuffer) dlsym(libvulkan, "vkCmdFillBuffer");
    vkCmdClearColorImage = (PFN_vkCmdClearColorImage) dlsym(libvulkan, "vkCmdClearColorImage");
    vkCmdClearDepthStencilImage = (PFN_vkCmdClearDepthStencilImage) dlsym(libvulkan, "vkCmdClearDepthStencilImage");
    vkCmdClearAttachments = (PFN_vkCmdClearAttachments) dlsym(libvulkan, "vkCmdClearAttachments");
    vkCmdResolveImage = (PFN_vkCmdResolveImage) dlsym(libvulkan, "vkCmdResolveImage");
    vkCmdSetEvent = (PFN_vkCmdSetEvent) dlsym(libvulkan, "vkCmdSetEvent");
    vkCmdResetEvent = (PFN_vkCmdResetEvent) dlsym(libvulkan, "vkCmdResetEvent");
    vkCmdWaitEvents = (PFN_vkCmdWaitEvents) dlsym(libvulkan, "vkCmdWaitEvents");
    vkCmdPipelineBarrier = (PFN_vkCmdPipelineBarrier) dlsym(libvulkan, "vkCmdPipelineBarrier");
    vkCmdBeginQuery = (PFN_vkCmdBeginQuery) dlsym(libvulkan, "vkCmdBeginQuery");
    vkCmdEndQuery = (PFN_vkCmdEndQuery) dlsym(libvulkan, "vkCmdEndQuery");
    vkCmdResetQueryPool = (PFN_vkCmdResetQueryPool) dlsym(libvulkan, "vkCmdResetQueryPool");
    vkCmdWriteTimestamp = (PFN_vkCmdWriteTimestamp) dlsym(libvulkan, "vkCmdWriteTimestamp");
    vkCmdCopyQueryPoolResults = (PFN_vkCmdCopyQueryPoolResults) dlsym(libvulkan, "vkCmdCopyQueryPoolResults");
    vkCmdPushConstants = (PFN_vkCmdPushConstants) dlsym(libvulkan, "vkCmdPushConstants");
    vkCmdBeginRenderPass = (PFN_vkCmdBeginRenderPass) dlsym(libvulkan, "vkCmdBeginRenderPass");
    vkCmdNextSubpass = (PFN_vkCmdNextSubpass) dlsym(libvulkan, "vkCmdNextSubpass");
    vkCmdEndRenderPass = (PFN_vkCmdEndRenderPass) dlsym(libvulkan, "vkCmdEndRenderPass");
    vkCmdExecuteCommands = (PFN_vkCmdExecuteCommands) dlsym(libvulkan, "vkCmdExecuteCommands");
    vkDestroySurfaceKHR = (PFN_vkDestroySurfaceKHR) dlsym(libvulkan, "vkDestroySurfaceKHR");
    vkGetPhysicalDeviceSurfaceSupportKHR = (PFN_vkGetPhysicalDeviceSurfaceSupportKHR) dlsym(libvulkan,
                                                                                                            "vkGetPhysicalDeviceSurfaceSupportKHR");
    vkGetPhysicalDeviceSurfaceCapabilitiesKHR = (PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR) dlsym(libvulkan,
                                                                                                                      "vkGetPhysicalDeviceSurfaceCapabilitiesKHR");
    vkGetPhysicalDeviceSurfaceFormatsKHR = (PFN_vkGetPhysicalDeviceSurfaceFormatsKHR) dlsym(libvulkan,
                                                                                                            "vkGetPhysicalDeviceSurfaceFormatsKHR");
    vkGetPhysicalDeviceSurfacePresentModesKHR = (PFN_vkGetPhysicalDeviceSurfacePresentModesKHR) dlsym(libvulkan,
                                                                                                                      "vkGetPhysicalDeviceSurfacePresentModesKHR");
    vkCreateSwapchainKHR = (PFN_vkCreateSwapchainKHR) dlsym(libvulkan, "vkCreateSwapchainKHR");
    vkDestroySwapchainKHR = (PFN_vkDestroySwapchainKHR) dlsym(libvulkan, "vkDestroySwapchainKHR");
    vkGetSwapchainImagesKHR = (PFN_vkGetSwapchainImagesKHR) dlsym(libvulkan, "vkGetSwapchainImagesKHR");
    vkAcquireNextImageKHR = (PFN_vkAcquireNextImageKHR) dlsym(libvulkan, "vkAcquireNextImageKHR");
    vkQueuePresentKHR = (PFN_vkQueuePresentKHR) dlsym(libvulkan, "vkQueuePresentKHR");
    vkGetPhysicalDeviceDisplayPropertiesKHR = (PFN_vkGetPhysicalDeviceDisplayPropertiesKHR) dlsym(libvulkan,
                                                                                                                  "vkGetPhysicalDeviceDisplayPropertiesKHR");
    vkGetPhysicalDeviceDisplayPlanePropertiesKHR = (PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR) dlsym(libvulkan,
                                                                                                                            "vkGetPhysicalDeviceDisplayPlanePropertiesKHR");
    vkGetDisplayPlaneSupportedDisplaysKHR = (PFN_vkGetDisplayPlaneSupportedDisplaysKHR) dlsym(libvulkan,
                                                                                                              "vkGetDisplayPlaneSupportedDisplaysKHR");
    vkGetDisplayModePropertiesKHR = (PFN_vkGetDisplayModePropertiesKHR) dlsym(libvulkan, "vkGetDisplayModePropertiesKHR");
    vkCreateDisplayModeKHR = (PFN_vkCreateDisplayModeKHR) dlsym(libvulkan, "vkCreateDisplayModeKHR");
    vkGetDisplayPlaneCapabilitiesKHR = (PFN_vkGetDisplayPlaneCapabilitiesKHR) dlsym(libvulkan,
                                                                                                    "vkGetDisplayPlaneCapabilitiesKHR");
    vkCreateDisplayPlaneSurfaceKHR = (PFN_vkCreateDisplayPlaneSurfaceKHR) dlsym(libvulkan,
                                                                                                "vkCreateDisplayPlaneSurfaceKHR");
    vkCreateSharedSwapchainsKHR = (PFN_vkCreateSharedSwapchainsKHR) dlsym(libvulkan, "vkCreateSharedSwapchainsKHR");

#ifdef VK_USE_PLATFORM_XLIB_KHR
    vkCreateXlibSurfaceKHR = (PFN_vkCreateXlibSurfaceKHR) dlsym(libvulkan, "vkCreateXlibSurfaceKHR");
    vkGetPhysicalDeviceXlibPresentationSupportKHR = (PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR) dlsym(libvulkan, "vkGetPhysicalDeviceXlibPresentationSupportKHR");
#endif

#ifdef VK_USE_PLATFORM_XCB_KHR
    vkCreateXcbSurfaceKHR = (PFN_vkCreateXcbSurfaceKHR) dlsym(libvulkan, "vkCreateXcbSurfaceKHR");
    vkGetPhysicalDeviceXcbPresentationSupportKHR = (PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR) dlsym(libvulkan, "vkGetPhysicalDeviceXcbPresentationSupportKHR");
#endif

#ifdef VK_USE_PLATFORM_WAYLAND_KHR
    vkCreateWaylandSurfaceKHR = (PFN_vkCreateWaylandSurfaceKHR) dlsym(libvulkan, "vkCreateWaylandSurfaceKHR");
    vkGetPhysicalDeviceWaylandPresentationSupportKHR = (PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR) dlsym(libvulkan, "vkGetPhysicalDeviceWaylandPresentationSupportKHR");
#endif

#ifdef VK_USE_PLATFORM_MIR_KHR
    vkCreateMirSurfaceKHR = (PFN_vkCreateMirSurfaceKHR) dlsym(libvulkan, "vkCreateMirSurfaceKHR");
    vkGetPhysicalDeviceMirPresentationSupportKHR = (PFN_vkGetPhysicalDeviceMirPresentationSupportKHR) dlsym(libvulkan, "vkGetPhysicalDeviceMirPresentationSupportKHR");
#endif

#ifdef VK_USE_PLATFORM_ANDROID_KHR
    vkCreateAndroidSurfaceKHR = (PFN_vkCreateAndroidSurfaceKHR) dlsym(libvulkan, "vkCreateAndroidSurfaceKHR");
#endif

#ifdef VK_USE_PLATFORM_WIN32_KHR
    vkCreateWin32SurfaceKHR = (PFN_vkCreateWin32SurfaceKHR) dlsym(libvulkan, "vkCreateWin32SurfaceKHR");
    vkGetPhysicalDeviceWin32PresentationSupportKHR = (PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR) dlsym(libvulkan, "vkGetPhysicalDeviceWin32PresentationSupportKHR");
#endif

#ifdef VK_USE_PLATFORM_MACOS_MVK
    vkCreateMetalSurfaceEXT = (PFN_vkCreateMetalSurfaceEXT) dlsym(libvulkan, "vkCreateMetalSurfaceEXT");
#endif

#ifdef USE_DEBUG_EXTENTIONS
    vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT) dlsym(libvulkan, "vkCreateDebugReportCallbackEXT");
    vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT) dlsym(libvulkan, "vkDestroyDebugReportCallbackEXT");
    vkDebugReportMessageEXT = (PFN_vkDebugReportMessageEXT) dlsym(libvulkan, "vkDebugReportMessageEXT");
#endif
    return true;
#endif
}

#ifndef VTK_NO_VULKAN_LOADING
PFN_vkCreateInstance vkCreateInstance;
PFN_vkDestroyInstance vkDestroyInstance;
PFN_vkEnumeratePhysicalDevices vkEnumeratePhysicalDevices;
PFN_vkGetPhysicalDeviceFeatures vkGetPhysicalDeviceFeatures;
PFN_vkGetPhysicalDeviceFormatProperties vkGetPhysicalDeviceFormatProperties;
PFN_vkGetPhysicalDeviceImageFormatProperties vkGetPhysicalDeviceImageFormatProperties;
PFN_vkGetPhysicalDeviceProperties vkGetPhysicalDeviceProperties;
PFN_vkGetPhysicalDeviceQueueFamilyProperties vkGetPhysicalDeviceQueueFamilyProperties;
PFN_vkGetPhysicalDeviceMemoryProperties vkGetPhysicalDeviceMemoryProperties;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr;
PFN_vkGetDeviceProcAddr vkGetDeviceProcAddr;
PFN_vkCreateDevice vkCreateDevice;
PFN_vkDestroyDevice vkDestroyDevice;
PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties;
PFN_vkEnumerateDeviceExtensionProperties vkEnumerateDeviceExtensionProperties;
PFN_vkEnumerateInstanceLayerProperties vkEnumerateInstanceLayerProperties;
PFN_vkEnumerateDeviceLayerProperties vkEnumerateDeviceLayerProperties;
PFN_vkGetDeviceQueue vkGetDeviceQueue;
PFN_vkQueueSubmit vkQueueSubmit;
PFN_vkQueueWaitIdle vkQueueWaitIdle;
PFN_vkDeviceWaitIdle vkDeviceWaitIdle;
PFN_vkAllocateMemory vkAllocateMemory;
PFN_vkFreeMemory vkFreeMemory;
PFN_vkMapMemory vkMapMemory;
PFN_vkUnmapMemory vkUnmapMemory;
PFN_vkFlushMappedMemoryRanges vkFlushMappedMemoryRanges;
PFN_vkInvalidateMappedMemoryRanges vkInvalidateMappedMemoryRanges;
PFN_vkGetDeviceMemoryCommitment vkGetDeviceMemoryCommitment;
PFN_vkBindBufferMemory vkBindBufferMemory;
PFN_vkBindImageMemory vkBindImageMemory;
PFN_vkGetBufferMemoryRequirements vkGetBufferMemoryRequirements;
PFN_vkGetImageMemoryRequirements vkGetImageMemoryRequirements;
PFN_vkGetImageSparseMemoryRequirements vkGetImageSparseMemoryRequirements;
PFN_vkGetPhysicalDeviceSparseImageFormatProperties vkGetPhysicalDeviceSparseImageFormatProperties;
PFN_vkQueueBindSparse vkQueueBindSparse;
PFN_vkCreateFence vkCreateFence;
PFN_vkDestroyFence vkDestroyFence;
PFN_vkResetFences vkResetFences;
PFN_vkGetFenceStatus vkGetFenceStatus;
PFN_vkWaitForFences vkWaitForFences;
PFN_vkCreateSemaphore vkCreateSemaphore;
PFN_vkDestroySemaphore vkDestroySemaphore;
PFN_vkCreateEvent vkCreateEvent;
PFN_vkDestroyEvent vkDestroyEvent;
PFN_vkGetEventStatus vkGetEventStatus;
PFN_vkSetEvent vkSetEvent;
PFN_vkResetEvent vkResetEvent;
PFN_vkCreateQueryPool vkCreateQueryPool;
PFN_vkDestroyQueryPool vkDestroyQueryPool;
PFN_vkGetQueryPoolResults vkGetQueryPoolResults;
PFN_vkCreateBuffer vkCreateBuffer;
PFN_vkDestroyBuffer vkDestroyBuffer;
PFN_vkCreateBufferView vkCreateBufferView;
PFN_vkDestroyBufferView vkDestroyBufferView;
PFN_vkCreateImage vkCreateImage;
PFN_vkDestroyImage vkDestroyImage;
PFN_vkGetImageSubresourceLayout vkGetImageSubresourceLayout;
PFN_vkCreateImageView vkCreateImageView;
PFN_vkDestroyImageView vkDestroyImageView;
PFN_vkCreateShaderModule vkCreateShaderModule;
PFN_vkDestroyShaderModule vkDestroyShaderModule;
PFN_vkCreatePipelineCache vkCreatePipelineCache;
PFN_vkDestroyPipelineCache vkDestroyPipelineCache;
PFN_vkGetPipelineCacheData vkGetPipelineCacheData;
PFN_vkMergePipelineCaches vkMergePipelineCaches;
PFN_vkCreateGraphicsPipelines vkCreateGraphicsPipelines;
PFN_vkCreateComputePipelines vkCreateComputePipelines;
PFN_vkDestroyPipeline vkDestroyPipeline;
PFN_vkCreatePipelineLayout vkCreatePipelineLayout;
PFN_vkDestroyPipelineLayout vkDestroyPipelineLayout;
PFN_vkCreateSampler vkCreateSampler;
PFN_vkDestroySampler vkDestroySampler;
PFN_vkCreateDescriptorSetLayout vkCreateDescriptorSetLayout;
PFN_vkDestroyDescriptorSetLayout vkDestroyDescriptorSetLayout;
PFN_vkCreateDescriptorPool vkCreateDescriptorPool;
PFN_vkDestroyDescriptorPool vkDestroyDescriptorPool;
PFN_vkResetDescriptorPool vkResetDescriptorPool;
PFN_vkAllocateDescriptorSets vkAllocateDescriptorSets;
PFN_vkFreeDescriptorSets vkFreeDescriptorSets;
PFN_vkUpdateDescriptorSets vkUpdateDescriptorSets;
PFN_vkCreateFramebuffer vkCreateFramebuffer;
PFN_vkDestroyFramebuffer vkDestroyFramebuffer;
PFN_vkCreateRenderPass vkCreateRenderPass;
PFN_vkDestroyRenderPass vkDestroyRenderPass;
PFN_vkGetRenderAreaGranularity vkGetRenderAreaGranularity;
PFN_vkCreateCommandPool vkCreateCommandPool;
PFN_vkDestroyCommandPool vkDestroyCommandPool;
PFN_vkResetCommandPool vkResetCommandPool;
PFN_vkAllocateCommandBuffers vkAllocateCommandBuffers;
PFN_vkFreeCommandBuffers vkFreeCommandBuffers;
PFN_vkBeginCommandBuffer vkBeginCommandBuffer;
PFN_vkEndCommandBuffer vkEndCommandBuffer;
PFN_vkResetCommandBuffer vkResetCommandBuffer;
PFN_vkCmdBindPipeline vkCmdBindPipeline;
PFN_vkCmdSetViewport vkCmdSetViewport;
PFN_vkCmdSetScissor vkCmdSetScissor;
PFN_vkCmdSetLineWidth vkCmdSetLineWidth;
PFN_vkCmdSetDepthBias vkCmdSetDepthBias;
PFN_vkCmdSetBlendConstants vkCmdSetBlendConstants;
PFN_vkCmdSetDepthBounds vkCmdSetDepthBounds;
PFN_vkCmdSetStencilCompareMask vkCmdSetStencilCompareMask;
PFN_vkCmdSetStencilWriteMask vkCmdSetStencilWriteMask;
PFN_vkCmdSetStencilReference vkCmdSetStencilReference;
PFN_vkCmdBindDescriptorSets vkCmdBindDescriptorSets;
PFN_vkCmdBindIndexBuffer vkCmdBindIndexBuffer;
PFN_vkCmdBindVertexBuffers vkCmdBindVertexBuffers;
PFN_vkCmdDraw vkCmdDraw;
PFN_vkCmdDrawIndexed vkCmdDrawIndexed;
PFN_vkCmdDrawIndirect vkCmdDrawIndirect;
PFN_vkCmdDrawIndexedIndirect vkCmdDrawIndexedIndirect;
PFN_vkCmdDispatch vkCmdDispatch;
PFN_vkCmdDispatchIndirect vkCmdDispatchIndirect;
PFN_vkCmdCopyBuffer vkCmdCopyBuffer;
PFN_vkCmdCopyImage vkCmdCopyImage;
PFN_vkCmdBlitImage vkCmdBlitImage;
PFN_vkCmdCopyBufferToImage vkCmdCopyBufferToImage;
PFN_vkCmdCopyImageToBuffer vkCmdCopyImageToBuffer;
PFN_vkCmdUpdateBuffer vkCmdUpdateBuffer;
PFN_vkCmdFillBuffer vkCmdFillBuffer;
PFN_vkCmdClearColorImage vkCmdClearColorImage;
PFN_vkCmdClearDepthStencilImage vkCmdClearDepthStencilImage;
PFN_vkCmdClearAttachments vkCmdClearAttachments;
PFN_vkCmdResolveImage vkCmdResolveImage;
PFN_vkCmdSetEvent vkCmdSetEvent;
PFN_vkCmdResetEvent vkCmdResetEvent;
PFN_vkCmdWaitEvents vkCmdWaitEvents;
PFN_vkCmdPipelineBarrier vkCmdPipelineBarrier;
PFN_vkCmdBeginQuery vkCmdBeginQuery;
PFN_vkCmdEndQuery vkCmdEndQuery;
PFN_vkCmdResetQueryPool vkCmdResetQueryPool;
PFN_vkCmdWriteTimestamp vkCmdWriteTimestamp;
PFN_vkCmdCopyQueryPoolResults vkCmdCopyQueryPoolResults;
PFN_vkCmdPushConstants vkCmdPushConstants;
PFN_vkCmdBeginRenderPass vkCmdBeginRenderPass;
PFN_vkCmdNextSubpass vkCmdNextSubpass;
PFN_vkCmdEndRenderPass vkCmdEndRenderPass;
PFN_vkCmdExecuteCommands vkCmdExecuteCommands;
PFN_vkDestroySurfaceKHR vkDestroySurfaceKHR;
PFN_vkGetPhysicalDeviceSurfaceSupportKHR vkGetPhysicalDeviceSurfaceSupportKHR;
PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR vkGetPhysicalDeviceSurfaceCapabilitiesKHR;
PFN_vkGetPhysicalDeviceSurfaceFormatsKHR vkGetPhysicalDeviceSurfaceFormatsKHR;
PFN_vkGetPhysicalDeviceSurfacePresentModesKHR vkGetPhysicalDeviceSurfacePresentModesKHR;
PFN_vkCreateSwapchainKHR vkCreateSwapchainKHR;
PFN_vkDestroySwapchainKHR vkDestroySwapchainKHR;
PFN_vkGetSwapchainImagesKHR vkGetSwapchainImagesKHR;
PFN_vkAcquireNextImageKHR vkAcquireNextImageKHR;
PFN_vkQueuePresentKHR vkQueuePresentKHR;
PFN_vkGetPhysicalDeviceDisplayPropertiesKHR vkGetPhysicalDeviceDisplayPropertiesKHR;
PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR vkGetPhysicalDeviceDisplayPlanePropertiesKHR;
PFN_vkGetDisplayPlaneSupportedDisplaysKHR vkGetDisplayPlaneSupportedDisplaysKHR;
PFN_vkGetDisplayModePropertiesKHR vkGetDisplayModePropertiesKHR;
PFN_vkCreateDisplayModeKHR vkCreateDisplayModeKHR;
PFN_vkGetDisplayPlaneCapabilitiesKHR vkGetDisplayPlaneCapabilitiesKHR;
PFN_vkCreateDisplayPlaneSurfaceKHR vkCreateDisplayPlaneSurfaceKHR;
PFN_vkCreateSharedSwapchainsKHR vkCreateSharedSwapchainsKHR;

#ifdef VK_USE_PLATFORM_XLIB_KHR
PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurfaceKHR;
PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR vkGetPhysicalDeviceXlibPresentationSupportKHR;
#endif

#ifdef VK_USE_PLATFORM_XCB_KHR
PFN_vkCreateXcbSurfaceKHR vkCreateXcbSurfaceKHR;
PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR vkGetPhysicalDeviceXcbPresentationSupportKHR;
#endif

#ifdef VK_USE_PLATFORM_WAYLAND_KHR
PFN_vkCreateWaylandSurfaceKHR vkCreateWaylandSurfaceKHR;
PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR vkGetPhysicalDeviceWaylandPresentationSupportKHR;
#endif

#ifdef VK_USE_PLATFORM_MIR_KHR
PFN_vkCreateMirSurfaceKHR vkCreateMirSurfaceKHR;
PFN_vkGetPhysicalDeviceMirPresentationSupportKHR vkGetPhysicalDeviceMirPresentationSupportKHR;
#endif

#ifdef VK_USE_PLATFORM_ANDROID_KHR
PFN_vkCreateAndroidSurfaceKHR vkCreateAndroidSurfaceKHR;
#endif

#ifdef VK_USE_PLATFORM_WIN32_KHR
PFN_vkCreateWin32SurfaceKHR vkCreateWin32SurfaceKHR;
PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR vkGetPhysicalDeviceWin32PresentationSupportKHR;
#endif

#ifdef VK_USE_PLATFORM_MACOS_MVK
PFN_vkCreateMetalSurfaceEXT vkCreateMetalSurfaceEXT;
#endif

PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallbackEXT;
PFN_vkDestroyDebugReportCallbackEXT vkDestroyDebugReportCallbackEXT;
PFN_vkDebugReportMessageEXT vkDebugReportMessageEXT;
#endif // VTK_NO_VULKAN_LOADING