Add dispatch tables

2023-01-10 15:28:48 +01:00 · 2023-01-10 15:28:48 +01:00 · 90b077c237
commit 90b077c237
parent 8408f11ada
4 changed files with 973 additions and 564 deletions
--- a/src/dummy_functions.rs
+++ b/src/dummy_functions.rs
@ -0,0 +1,361 @@
+#![allow(non_camel_case_types)]
+
+use vulkan_sys::prelude::*;
+
+// instance
+pub type PFN_GetPhysicalDeviceProcAddr = PFN_vkVoidFunction;
+pub type PFN_vkEnumerateDeviceLayerProperties = PFN_vkVoidFunction;
+pub type PFN_vkEnumerateInstanceVersion = PFN_vkVoidFunction;
+pub type PFN_vkEnumeratePhysicalDeviceGroups = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceFeatures2 = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceProperties2 = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceFormatProperties2 = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceImageFormatProperties2 = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceSparseImageFormatProperties2 = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalBufferProperties = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalFenceProperties = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalSemaphoreProperties = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceToolProperties = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDevicePresentRectanglesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceDisplayPropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDisplayPlaneSupportedDisplaysKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDisplayModePropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateDisplayModeKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDisplayPlaneCapabilitiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateDisplayPlaneSurfaceKHR = PFN_vkVoidFunction;
+pub type PFN_vkEnumeratePhysicalDeviceGroupsKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalBufferPropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalSemaphorePropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalFencePropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkEnumeratePhysicalDeviceQueueFamilyPerformanceQueryCountersKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceQueueFamilyPerformanceQueryPassesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceSurfaceCapabilities2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceDisplayProperties2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceDisplayPlaneProperties2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDisplayModeProperties2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDisplayPlaneCapabilities2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceFragmentShadingRatesKHR = PFN_vkVoidFunction;
+pub type PFN_vkDebugReportMessageEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceExternalImageFormatPropertiesNV = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceSurfaceCapabilities2EXT = PFN_vkVoidFunction;
+pub type PFN_vkSubmitDebugUtilsMessageEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceMultisamplePropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceCalibrateableTimeDomainsEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceToolPropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceCooperativeMatrixPropertiesNV = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV = PFN_vkVoidFunction;
+pub type PFN_vkCreateHeadlessSurfaceEXT = PFN_vkVoidFunction;
+pub type PFN_vkAcquireDrmDisplayEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetDrmDisplayEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceOpticalFlowImageFormatsNV = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceSurfaceFormats2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPhysicalDeviceQueueFamilyProperties2 = PFN_vkVoidFunction;
+
+// device
+pub type PFN_vkGetDeviceMemoryCommitment = PFN_vkVoidFunction;
+pub type PFN_vkQueueBindSparse = PFN_vkVoidFunction;
+pub type PFN_vkGetFenceStatus = PFN_vkVoidFunction;
+pub type PFN_vkGetRenderAreaGranularity = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceGroupPeerMemoryFeatures = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDeviceMask = PFN_vkVoidFunction;
+pub type PFN_vkCmdDispatchBase = PFN_vkVoidFunction;
+pub type PFN_vkGetImageSparseMemoryRequirements2 = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceQueue2 = PFN_vkVoidFunction;
+pub type PFN_vkCreateSamplerYcbcrConversion = PFN_vkVoidFunction;
+pub type PFN_vkDestroySamplerYcbcrConversion = PFN_vkVoidFunction;
+pub type PFN_vkCreateDescriptorUpdateTemplate = PFN_vkVoidFunction;
+pub type PFN_vkDestroyDescriptorUpdateTemplate = PFN_vkVoidFunction;
+pub type PFN_vkUpdateDescriptorSetWithTemplate = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndirectCount = PFN_vkVoidFunction;
+pub type PFN_vkCreateRenderPass2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndexedIndirectCount = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginRenderPass2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdNextSubpass2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndRenderPass2 = PFN_vkVoidFunction;
+pub type PFN_vkResetQueryPool = PFN_vkVoidFunction;
+pub type PFN_vkGetSemaphoreCounterValue = PFN_vkVoidFunction;
+pub type PFN_vkWaitSemaphores = PFN_vkVoidFunction;
+pub type PFN_vkSignalSemaphore = PFN_vkVoidFunction;
+pub type PFN_vkGetBufferOpaqueCaptureAddress = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceMemoryOpaqueCaptureAddress = PFN_vkVoidFunction;
+pub type PFN_vkCreatePrivateDataSlot = PFN_vkVoidFunction;
+pub type PFN_vkDestroyPrivateDataSlot = PFN_vkVoidFunction;
+pub type PFN_vkSetPrivateData = PFN_vkVoidFunction;
+pub type PFN_vkGetPrivateData = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetEvent2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdResetEvent2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdWaitEvents2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdPipelineBarrier2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteTimestamp2 = PFN_vkVoidFunction;
+pub type PFN_vkQueueSubmit2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyBuffer2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyImage2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyBufferToImage2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyImageToBuffer2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdBlitImage2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdResolveImage2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginRendering = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndRendering = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCullMode = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetFrontFace = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPrimitiveTopology = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetViewportWithCount = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetScissorWithCount = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindVertexBuffers2 = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthTestEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthWriteEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthCompareOp = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthBoundsTestEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetStencilTestEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetStencilOp = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetRasterizerDiscardEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthBiasEnable = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPrimitiveRestartEnable = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceBufferMemoryRequirements = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceImageMemoryRequirements = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceImageSparseMemoryRequirements = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceGroupPresentCapabilitiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceGroupSurfacePresentModesKHR = PFN_vkVoidFunction;
+pub type PFN_vkAcquireNextImage2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateSharedSwapchainsKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginRenderingKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndRenderingKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceGroupPeerMemoryFeaturesKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDeviceMaskKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdDispatchBaseKHR = PFN_vkVoidFunction;
+pub type PFN_vkTrimCommandPoolKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetMemoryFdKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetMemoryFdPropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkImportSemaphoreFdKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetSemaphoreFdKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdPushDescriptorSetKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdPushDescriptorSetWithTemplateKHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateDescriptorUpdateTemplateKHR = PFN_vkVoidFunction;
+pub type PFN_vkDestroyDescriptorUpdateTemplateKHR = PFN_vkVoidFunction;
+pub type PFN_vkUpdateDescriptorSetWithTemplateKHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateRenderPass2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginRenderPass2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdNextSubpass2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndRenderPass2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetSwapchainStatusKHR = PFN_vkVoidFunction;
+pub type PFN_vkImportFenceFdKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetFenceFdKHR = PFN_vkVoidFunction;
+pub type PFN_vkAcquireProfilingLockKHR = PFN_vkVoidFunction;
+pub type PFN_vkReleaseProfilingLockKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetImageMemoryRequirements2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetBufferMemoryRequirements2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetImageSparseMemoryRequirements2KHR = PFN_vkVoidFunction;
+pub type PFN_vkDestroySamplerYcbcrConversionKHR = PFN_vkVoidFunction;
+pub type PFN_vkCreateSamplerYcbcrConversionKHR = PFN_vkVoidFunction;
+pub type PFN_vkBindBufferMemory2KHR = PFN_vkVoidFunction;
+pub type PFN_vkBindImageMemory2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDescriptorSetLayoutSupportKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndirectCountKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndexedIndirectCountKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetSemaphoreCounterValueKHR = PFN_vkVoidFunction;
+pub type PFN_vkWaitSemaphoresKHR = PFN_vkVoidFunction;
+pub type PFN_vkSignalSemaphoreKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetFragmentShadingRateKHR = PFN_vkVoidFunction;
+pub type PFN_vkWaitForPresentKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetBufferDeviceAddressKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetBufferOpaqueCaptureAddressKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceMemoryOpaqueCaptureAddressKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPipelineExecutablePropertiesKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPipelineExecutableStatisticsKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetPipelineExecutableInternalRepresentationsKHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetEvent2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdResetEvent2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdWaitEvents2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdPipelineBarrier2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteTimestamp2KHR = PFN_vkVoidFunction;
+pub type PFN_vkQueueSubmit2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteBufferMarker2AMD = PFN_vkVoidFunction;
+pub type PFN_vkGetQueueCheckpointData2NV = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyBuffer2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyImage2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyBufferToImage2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyImageToBuffer2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdResolveImage2KHR = PFN_vkVoidFunction;
+pub type PFN_vkCmdTraceRaysIndirect2KHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceBufferMemoryRequirementsKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceImageMemoryRequirementsKHR = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceImageSparseMemoryRequirementsKHR = PFN_vkVoidFunction;
+pub type PFN_vkDebugMarkerSetObjectTagEXT = PFN_vkVoidFunction;
+pub type PFN_vkDebugMarkerSetObjectNameEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDebugMarkerBeginEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDebugMarkerEndEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDebugMarkerInsertEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindTransformFeedbackBuffersEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginTransformFeedbackEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndTransformFeedbackEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginQueryIndexedEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndQueryIndexedEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndirectByteCountEXT = PFN_vkVoidFunction;
+pub type PFN_vkCreateCuModuleNVX = PFN_vkVoidFunction;
+pub type PFN_vkCreateCuFunctionNVX = PFN_vkVoidFunction;
+pub type PFN_vkDestroyCuModuleNVX = PFN_vkVoidFunction;
+pub type PFN_vkDestroyCuFunctionNVX = PFN_vkVoidFunction;
+pub type PFN_vkCmdCuLaunchKernelNVX = PFN_vkVoidFunction;
+pub type PFN_vkGetImageViewHandleNVX = PFN_vkVoidFunction;
+pub type PFN_vkGetImageViewAddressNVX = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndirectCountAMD = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawIndexedIndirectCountAMD = PFN_vkVoidFunction;
+pub type PFN_vkGetShaderInfoAMD = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginConditionalRenderingEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndConditionalRenderingEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetViewportWScalingNV = PFN_vkVoidFunction;
+pub type PFN_vkDisplayPowerControlEXT = PFN_vkVoidFunction;
+pub type PFN_vkRegisterDeviceEventEXT = PFN_vkVoidFunction;
+pub type PFN_vkRegisterDisplayEventEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetSwapchainCounterEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetRefreshCycleDurationGOOGLE = PFN_vkVoidFunction;
+pub type PFN_vkGetPastPresentationTimingGOOGLE = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDiscardRectangleEXT = PFN_vkVoidFunction;
+pub type PFN_vkSetHdrMetadataEXT = PFN_vkVoidFunction;
+pub type PFN_vkSetDebugUtilsObjectNameEXT = PFN_vkVoidFunction;
+pub type PFN_vkSetDebugUtilsObjectTagEXT = PFN_vkVoidFunction;
+pub type PFN_vkQueueBeginDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkQueueEndDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkQueueInsertDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBeginDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdEndDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdInsertDebugUtilsLabelEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetSampleLocationsEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetImageDrmFormatModifierPropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkCreateValidationCacheEXT = PFN_vkVoidFunction;
+pub type PFN_vkDestroyValidationCacheEXT = PFN_vkVoidFunction;
+pub type PFN_vkMergeValidationCachesEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetValidationCacheDataEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindShadingRateImageNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetViewportShadingRatePaletteNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCoarseSampleOrderNV = PFN_vkVoidFunction;
+pub type PFN_vkCreateAccelerationStructureNV = PFN_vkVoidFunction;
+pub type PFN_vkDestroyAccelerationStructureNV = PFN_vkVoidFunction;
+pub type PFN_vkGetAccelerationStructureMemoryRequirementsNV = PFN_vkVoidFunction;
+pub type PFN_vkBindAccelerationStructureMemoryNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdBuildAccelerationStructureNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyAccelerationStructureNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdTraceRaysNV = PFN_vkVoidFunction;
+pub type PFN_vkCreateRayTracingPipelinesNV = PFN_vkVoidFunction;
+pub type PFN_vkGetRayTracingShaderGroupHandlesNV = PFN_vkVoidFunction;
+pub type PFN_vkGetAccelerationStructureHandleNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteAccelerationStructuresPropertiesNV = PFN_vkVoidFunction;
+pub type PFN_vkCompileDeferredNV = PFN_vkVoidFunction;
+pub type PFN_vkGetMemoryHostPointerPropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteBufferMarkerAMD = PFN_vkVoidFunction;
+pub type PFN_vkGetCalibratedTimestampsEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksIndirectNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksIndirectCountNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetExclusiveScissorNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCheckpointNV = PFN_vkVoidFunction;
+pub type PFN_vkGetQueueCheckpointDataNV = PFN_vkVoidFunction;
+pub type PFN_vkInitializePerformanceApiINTEL = PFN_vkVoidFunction;
+pub type PFN_vkUninitializePerformanceApiINTEL = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPerformanceMarkerINTEL = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPerformanceStreamMarkerINTEL = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPerformanceOverrideINTEL = PFN_vkVoidFunction;
+pub type PFN_vkAcquirePerformanceConfigurationINTEL = PFN_vkVoidFunction;
+pub type PFN_vkQueueSetPerformanceConfigurationINTEL = PFN_vkVoidFunction;
+pub type PFN_vkGetPerformanceParameterINTEL = PFN_vkVoidFunction;
+pub type PFN_vkSetLocalDimmingAMD = PFN_vkVoidFunction;
+pub type PFN_vkGetBufferDeviceAddressEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetLineStippleEXT = PFN_vkVoidFunction;
+pub type PFN_vkResetQueryPoolEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCullModeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPrimitiveTopologyEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetViewportWithCountEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetScissorWithCountEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindVertexBuffers2EXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthTestEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthWriteEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthCompareOpEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthBoundsTestEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetStencilTestEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetStencilOpEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetGeneratedCommandsMemoryRequirementsNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdPreprocessGeneratedCommandsNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdExecuteGeneratedCommandsNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindPipelineShaderGroupNV = PFN_vkVoidFunction;
+pub type PFN_vkCreateIndirectCommandsLayoutNV = PFN_vkVoidFunction;
+pub type PFN_vkDestroyIndirectCommandsLayoutNV = PFN_vkVoidFunction;
+pub type PFN_vkCreatePrivateDataSlotEXT = PFN_vkVoidFunction;
+pub type PFN_vkDestroyPrivateDataSlotEXT = PFN_vkVoidFunction;
+pub type PFN_vkSetPrivateDataEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetPrivateDataEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetFragmentShadingRateEnumNV = PFN_vkVoidFunction;
+pub type PFN_vkGetImageSubresourceLayout2EXT = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceFaultInfoEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetVertexInputEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI = PFN_vkVoidFunction;
+pub type PFN_vkCmdSubpassShadingHUAWEI = PFN_vkVoidFunction;
+pub type PFN_vkCmdBindInvocationMaskHUAWEI = PFN_vkVoidFunction;
+pub type PFN_vkGetMemoryRemoteAddressNV = PFN_vkVoidFunction;
+pub type PFN_vkGetPipelinePropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPatchControlPointsEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetRasterizerDiscardEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthBiasEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetLogicOpEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPrimitiveRestartEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetColorWriteEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMultiEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMultiIndexedEXT = PFN_vkVoidFunction;
+pub type PFN_vkCreateMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkDestroyMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBuildMicromapsEXT = PFN_vkVoidFunction;
+pub type PFN_vkBuildMicromapsEXT = PFN_vkVoidFunction;
+pub type PFN_vkCopyMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkCopyMicromapToMemoryEXT = PFN_vkVoidFunction;
+pub type PFN_vkCopyMemoryToMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkWriteMicromapsPropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyMicromapToMemoryEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdCopyMemoryToMicromapEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdWriteMicromapsPropertiesEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetDeviceMicromapCompatibilityEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetMicromapBuildSizesEXT = PFN_vkVoidFunction;
+pub type PFN_vkSetDeviceMemoryPriorityEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetDescriptorSetLayoutHostMappingInfoVALVE = PFN_vkVoidFunction;
+pub type PFN_vkGetDescriptorSetHostMappingVALVE = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetTessellationDomainOriginEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthClampEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetPolygonModeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetRasterizationSamplesEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetSampleMaskEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetAlphaToCoverageEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetAlphaToOneEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetLogicOpEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetColorBlendEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetColorBlendEquationEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetColorWriteMaskEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetRasterizationStreamEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetConservativeRasterizationModeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetExtraPrimitiveOverestimationSizeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthClipEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetSampleLocationsEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetColorBlendAdvancedEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetProvokingVertexModeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetLineRasterizationModeEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetLineStippleEnableEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetDepthClipNegativeOneToOneEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetViewportWScalingEnableNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCoverageModulationModeNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCoverageModulationTableEnableNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCoverageModulationTableNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetShadingRateImageEnableNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetRepresentativeFragmentTestEnableNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetCoverageReductionModeNV = PFN_vkVoidFunction;
+pub type PFN_vkGetShaderModuleIdentifierEXT = PFN_vkVoidFunction;
+pub type PFN_vkGetShaderModuleCreateInfoIdentifierEXT = PFN_vkVoidFunction;
+pub type PFN_vkCreateOpticalFlowSessionNV = PFN_vkVoidFunction;
+pub type PFN_vkDestroyOpticalFlowSessionNV = PFN_vkVoidFunction;
+pub type PFN_vkBindOpticalFlowSessionImageNV = PFN_vkVoidFunction;
+pub type PFN_vkCmdOpticalFlowExecuteNV = PFN_vkVoidFunction;
+pub type PFN_vkGetFramebufferTilePropertiesQCOM = PFN_vkVoidFunction;
+pub type PFN_vkGetDynamicRenderingTilePropertiesQCOM = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksIndirectEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdDrawMeshTasksIndirectCountEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdSetFrontFaceEXT = PFN_vkVoidFunction;
+pub type PFN_vkCmdBlitImage2KHR = PFN_vkVoidFunction;
--- a/src/layer_device_dispatch_table.rs
+++ b/src/layer_device_dispatch_table.rs
--- a/src/layer_instance_dispatch_table.rs
+++ b/src/layer_instance_dispatch_table.rs
@ -1,151 +1,175 @@
+#![allow(non_snake_case)]
+
 use vulkan_sys::prelude::*;

+use crate::dummy_functions::*;
+
+#[derive(Clone, Default)]
 pub struct VkLayerInstanceDispatchTable {
    // Manually add in GetPhysicalDeviceProcAddr entry
-    GetPhysicalDeviceProcAddr: PFN_GetPhysicalDeviceProcAddr,
+    pub GetPhysicalDeviceProcAddr: Option<PFN_GetPhysicalDeviceProcAddr>,

    // ---- Core 1_0 commands
-    CreateInstance: PFN_vkCreateInstance,
-    DestroyInstance: PFN_vkDestroyInstance,
-    EnumeratePhysicalDevices: PFN_vkEnumeratePhysicalDevices,
-    GetPhysicalDeviceFeatures: PFN_vkGetPhysicalDeviceFeatures,
-    GetPhysicalDeviceFormatProperties: PFN_vkGetPhysicalDeviceFormatProperties,
-    GetPhysicalDeviceImageFormatProperties: PFN_vkGetPhysicalDeviceImageFormatProperties,
-    GetPhysicalDeviceProperties: PFN_vkGetPhysicalDeviceProperties,
-    GetPhysicalDeviceQueueFamilyProperties: PFN_vkGetPhysicalDeviceQueueFamilyProperties,
-    GetPhysicalDeviceMemoryProperties: PFN_vkGetPhysicalDeviceMemoryProperties,
-    GetInstanceProcAddr: PFN_vkGetInstanceProcAddr,
-    CreateDevice: PFN_vkCreateDevice,
-    EnumerateInstanceExtensionProperties: PFN_vkEnumerateInstanceExtensionProperties,
-    EnumerateDeviceExtensionProperties: PFN_vkEnumerateDeviceExtensionProperties,
-    EnumerateInstanceLayerProperties: PFN_vkEnumerateInstanceLayerProperties,
-    EnumerateDeviceLayerProperties: PFN_vkEnumerateDeviceLayerProperties,
-    GetPhysicalDeviceSparseImageFormatProperties:
-        PFN_vkGetPhysicalDeviceSparseImageFormatProperties,
+    pub CreateInstance: Option<PFN_vkCreateInstance>,
+    pub DestroyInstance: Option<PFN_vkDestroyInstance>,
+    pub EnumeratePhysicalDevices: Option<PFN_vkEnumeratePhysicalDevices>,
+    pub GetPhysicalDeviceFeatures: Option<PFN_vkGetPhysicalDeviceFeatures>,
+    pub GetPhysicalDeviceFormatProperties: Option<PFN_vkGetPhysicalDeviceFormatProperties>,
+    pub GetPhysicalDeviceImageFormatProperties:
+        Option<PFN_vkGetPhysicalDeviceImageFormatProperties>,
+    pub GetPhysicalDeviceProperties: Option<PFN_vkGetPhysicalDeviceProperties>,
+    pub GetPhysicalDeviceQueueFamilyProperties:
+        Option<PFN_vkGetPhysicalDeviceQueueFamilyProperties>,
+    pub GetPhysicalDeviceMemoryProperties: Option<PFN_vkGetPhysicalDeviceMemoryProperties>,
+    pub GetInstanceProcAddr: Option<PFN_vkGetInstanceProcAddr>,
+    pub CreateDevice: Option<PFN_vkCreateDevice>,
+    pub EnumerateInstanceExtensionProperties: Option<PFN_vkEnumerateInstanceExtensionProperties>,
+    pub EnumerateDeviceExtensionProperties: Option<PFN_vkEnumerateDeviceExtensionProperties>,
+    pub EnumerateInstanceLayerProperties: Option<PFN_vkEnumerateInstanceLayerProperties>,
+    pub EnumerateDeviceLayerProperties: Option<PFN_vkEnumerateDeviceLayerProperties>,
+    pub GetPhysicalDeviceSparseImageFormatProperties:
+        Option<PFN_vkGetPhysicalDeviceSparseImageFormatProperties>,

    // ---- Core 1_1 commands
-    EnumerateInstanceVersion: PFN_vkEnumerateInstanceVersion,
-    EnumeratePhysicalDeviceGroups: PFN_vkEnumeratePhysicalDeviceGroups,
-    GetPhysicalDeviceFeatures2: PFN_vkGetPhysicalDeviceFeatures2,
-    GetPhysicalDeviceProperties2: PFN_vkGetPhysicalDeviceProperties2,
-    GetPhysicalDeviceFormatProperties2: PFN_vkGetPhysicalDeviceFormatProperties2,
-    GetPhysicalDeviceImageFormatProperties2: PFN_vkGetPhysicalDeviceImageFormatProperties2,
-    GetPhysicalDeviceQueueFamilyProperties2: PFN_vkGetPhysicalDeviceQueueFamilyProperties2,
-    GetPhysicalDeviceMemoryProperties2: PFN_vkGetPhysicalDeviceMemoryProperties2,
-    GetPhysicalDeviceSparseImageFormatProperties2:
-        PFN_vkGetPhysicalDeviceSparseImageFormatProperties2,
-    GetPhysicalDeviceExternalBufferProperties: PFN_vkGetPhysicalDeviceExternalBufferProperties,
-    GetPhysicalDeviceExternalFenceProperties: PFN_vkGetPhysicalDeviceExternalFenceProperties,
-    GetPhysicalDeviceExternalSemaphoreProperties:
-        PFN_vkGetPhysicalDeviceExternalSemaphoreProperties,
+    pub EnumerateInstanceVersion: Option<PFN_vkEnumerateInstanceVersion>,
+    pub EnumeratePhysicalDeviceGroups: Option<PFN_vkEnumeratePhysicalDeviceGroups>,
+    pub GetPhysicalDeviceFeatures2: Option<PFN_vkGetPhysicalDeviceFeatures2>,
+    pub GetPhysicalDeviceProperties2: Option<PFN_vkGetPhysicalDeviceProperties2>,
+    pub GetPhysicalDeviceFormatProperties2: Option<PFN_vkGetPhysicalDeviceFormatProperties2>,
+    pub GetPhysicalDeviceImageFormatProperties2:
+        Option<PFN_vkGetPhysicalDeviceImageFormatProperties2>,
+    pub GetPhysicalDeviceQueueFamilyProperties2:
+        Option<PFN_vkGetPhysicalDeviceQueueFamilyProperties2>,
+    pub GetPhysicalDeviceMemoryProperties2: Option<PFN_vkGetPhysicalDeviceMemoryProperties2>,
+    pub GetPhysicalDeviceSparseImageFormatProperties2:
+        Option<PFN_vkGetPhysicalDeviceSparseImageFormatProperties2>,
+    pub GetPhysicalDeviceExternalBufferProperties:
+        Option<PFN_vkGetPhysicalDeviceExternalBufferProperties>,
+    pub GetPhysicalDeviceExternalFenceProperties:
+        Option<PFN_vkGetPhysicalDeviceExternalFenceProperties>,
+    pub GetPhysicalDeviceExternalSemaphoreProperties:
+        Option<PFN_vkGetPhysicalDeviceExternalSemaphoreProperties>,

    // ---- Core 1_3 commands
-    GetPhysicalDeviceToolProperties: PFN_vkGetPhysicalDeviceToolProperties,
+    pub GetPhysicalDeviceToolProperties: Option<PFN_vkGetPhysicalDeviceToolProperties>,

    // ---- VK_KHR_surface extension commands
-    DestroySurfaceKHR: PFN_vkDestroySurfaceKHR,
-    GetPhysicalDeviceSurfaceSupportKHR: PFN_vkGetPhysicalDeviceSurfaceSupportKHR,
-    GetPhysicalDeviceSurfaceCapabilitiesKHR: PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR,
-    GetPhysicalDeviceSurfaceFormatsKHR: PFN_vkGetPhysicalDeviceSurfaceFormatsKHR,
-    GetPhysicalDeviceSurfacePresentModesKHR: PFN_vkGetPhysicalDeviceSurfacePresentModesKHR,
+    pub DestroySurfaceKHR: Option<PFN_vkDestroySurfaceKHR>,
+    pub GetPhysicalDeviceSurfaceSupportKHR: Option<PFN_vkGetPhysicalDeviceSurfaceSupportKHR>,
+    pub GetPhysicalDeviceSurfaceCapabilitiesKHR:
+        Option<PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR>,
+    pub GetPhysicalDeviceSurfaceFormatsKHR: Option<PFN_vkGetPhysicalDeviceSurfaceFormatsKHR>,
+    pub GetPhysicalDeviceSurfacePresentModesKHR:
+        Option<PFN_vkGetPhysicalDeviceSurfacePresentModesKHR>,

    // ---- VK_KHR_swapchain extension commands
-    GetPhysicalDevicePresentRectanglesKHR: PFN_vkGetPhysicalDevicePresentRectanglesKHR,
+    pub GetPhysicalDevicePresentRectanglesKHR: Option<PFN_vkGetPhysicalDevicePresentRectanglesKHR>,

    // ---- VK_KHR_display extension commands
-    GetPhysicalDeviceDisplayPropertiesKHR: PFN_vkGetPhysicalDeviceDisplayPropertiesKHR,
-    GetPhysicalDeviceDisplayPlanePropertiesKHR: PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR,
-    GetDisplayPlaneSupportedDisplaysKHR: PFN_vkGetDisplayPlaneSupportedDisplaysKHR,
-    GetDisplayModePropertiesKHR: PFN_vkGetDisplayModePropertiesKHR,
-    CreateDisplayModeKHR: PFN_vkCreateDisplayModeKHR,
-    GetDisplayPlaneCapabilitiesKHR: PFN_vkGetDisplayPlaneCapabilitiesKHR,
-    CreateDisplayPlaneSurfaceKHR: PFN_vkCreateDisplayPlaneSurfaceKHR,
+    pub GetPhysicalDeviceDisplayPropertiesKHR: Option<PFN_vkGetPhysicalDeviceDisplayPropertiesKHR>,
+    pub GetPhysicalDeviceDisplayPlanePropertiesKHR:
+        Option<PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR>,
+    pub GetDisplayPlaneSupportedDisplaysKHR: Option<PFN_vkGetDisplayPlaneSupportedDisplaysKHR>,
+    pub GetDisplayModePropertiesKHR: Option<PFN_vkGetDisplayModePropertiesKHR>,
+    pub CreateDisplayModeKHR: Option<PFN_vkCreateDisplayModeKHR>,
+    pub GetDisplayPlaneCapabilitiesKHR: Option<PFN_vkGetDisplayPlaneCapabilitiesKHR>,
+    pub CreateDisplayPlaneSurfaceKHR: Option<PFN_vkCreateDisplayPlaneSurfaceKHR>,

    // ---- VK_KHR_get_physical_device_properties2 extension commands
-    GetPhysicalDeviceFeatures2KHR: PFN_vkGetPhysicalDeviceFeatures2KHR,
-    GetPhysicalDeviceProperties2KHR: PFN_vkGetPhysicalDeviceProperties2KHR,
-    GetPhysicalDeviceFormatProperties2KHR: PFN_vkGetPhysicalDeviceFormatProperties2KHR,
-    GetPhysicalDeviceImageFormatProperties2KHR: PFN_vkGetPhysicalDeviceImageFormatProperties2KHR,
-    GetPhysicalDeviceQueueFamilyProperties2KHR: PFN_vkGetPhysicalDeviceQueueFamilyProperties2KHR,
-    GetPhysicalDeviceMemoryProperties2KHR: PFN_vkGetPhysicalDeviceMemoryProperties2KHR,
-    GetPhysicalDeviceSparseImageFormatProperties2KHR:
-        PFN_vkGetPhysicalDeviceSparseImageFormatProperties2KHR,
+    pub GetPhysicalDeviceFeatures2KHR: Option<PFN_vkGetPhysicalDeviceFeatures2KHR>,
+    pub GetPhysicalDeviceProperties2KHR: Option<PFN_vkGetPhysicalDeviceProperties2KHR>,
+    pub GetPhysicalDeviceFormatProperties2KHR: Option<PFN_vkGetPhysicalDeviceFormatProperties2KHR>,
+    pub GetPhysicalDeviceImageFormatProperties2KHR:
+        Option<PFN_vkGetPhysicalDeviceImageFormatProperties2KHR>,
+    pub GetPhysicalDeviceQueueFamilyProperties2KHR:
+        Option<PFN_vkGetPhysicalDeviceQueueFamilyProperties2KHR>,
+    pub GetPhysicalDeviceMemoryProperties2KHR: Option<PFN_vkGetPhysicalDeviceMemoryProperties2KHR>,
+    pub GetPhysicalDeviceSparseImageFormatProperties2KHR:
+        Option<PFN_vkGetPhysicalDeviceSparseImageFormatProperties2KHR>,

    // ---- VK_KHR_device_group_creation extension commands
-    EnumeratePhysicalDeviceGroupsKHR: PFN_vkEnumeratePhysicalDeviceGroupsKHR,
+    pub EnumeratePhysicalDeviceGroupsKHR: Option<PFN_vkEnumeratePhysicalDeviceGroupsKHR>,

    // ---- VK_KHR_external_memory_capabilities extension commands
-    GetPhysicalDeviceExternalBufferPropertiesKHR:
-        PFN_vkGetPhysicalDeviceExternalBufferPropertiesKHR,
+    pub GetPhysicalDeviceExternalBufferPropertiesKHR:
+        Option<PFN_vkGetPhysicalDeviceExternalBufferPropertiesKHR>,

    // ---- VK_KHR_external_semaphore_capabilities extension commands
-    GetPhysicalDeviceExternalSemaphorePropertiesKHR:
-        PFN_vkGetPhysicalDeviceExternalSemaphorePropertiesKHR,
+    pub GetPhysicalDeviceExternalSemaphorePropertiesKHR:
+        Option<PFN_vkGetPhysicalDeviceExternalSemaphorePropertiesKHR>,

    // ---- VK_KHR_external_fence_capabilities extension commands
-    GetPhysicalDeviceExternalFencePropertiesKHR: PFN_vkGetPhysicalDeviceExternalFencePropertiesKHR,
+    pub GetPhysicalDeviceExternalFencePropertiesKHR:
+        Option<PFN_vkGetPhysicalDeviceExternalFencePropertiesKHR>,

    // ---- VK_KHR_performance_query extension commands
-    EnumeratePhysicalDeviceQueueFamilyPerformanceQueryCountersKHR:
-        PFN_vkEnumeratePhysicalDeviceQueueFamilyPerformanceQueryCountersKHR,
-    GetPhysicalDeviceQueueFamilyPerformanceQueryPassesKHR:
-        PFN_vkGetPhysicalDeviceQueueFamilyPerformanceQueryPassesKHR,
+    pub EnumeratePhysicalDeviceQueueFamilyPerformanceQueryCountersKHR:
+        Option<PFN_vkEnumeratePhysicalDeviceQueueFamilyPerformanceQueryCountersKHR>,
+    pub GetPhysicalDeviceQueueFamilyPerformanceQueryPassesKHR:
+        Option<PFN_vkGetPhysicalDeviceQueueFamilyPerformanceQueryPassesKHR>,

    // ---- VK_KHR_get_surface_capabilities2 extension commands
-    GetPhysicalDeviceSurfaceCapabilities2KHR: PFN_vkGetPhysicalDeviceSurfaceCapabilities2KHR,
-    GetPhysicalDeviceSurfaceFormats2KHR: PFN_vkGetPhysicalDeviceSurfaceFormats2KHR,
+    pub GetPhysicalDeviceSurfaceCapabilities2KHR:
+        Option<PFN_vkGetPhysicalDeviceSurfaceCapabilities2KHR>,
+    pub GetPhysicalDeviceSurfaceFormats2KHR: Option<PFN_vkGetPhysicalDeviceSurfaceFormats2KHR>,

    // ---- VK_KHR_get_display_properties2 extension commands
-    GetPhysicalDeviceDisplayProperties2KHR: PFN_vkGetPhysicalDeviceDisplayProperties2KHR,
-    GetPhysicalDeviceDisplayPlaneProperties2KHR: PFN_vkGetPhysicalDeviceDisplayPlaneProperties2KHR,
-    GetDisplayModeProperties2KHR: PFN_vkGetDisplayModeProperties2KHR,
-    GetDisplayPlaneCapabilities2KHR: PFN_vkGetDisplayPlaneCapabilities2KHR,
+    pub GetPhysicalDeviceDisplayProperties2KHR:
+        Option<PFN_vkGetPhysicalDeviceDisplayProperties2KHR>,
+    pub GetPhysicalDeviceDisplayPlaneProperties2KHR:
+        Option<PFN_vkGetPhysicalDeviceDisplayPlaneProperties2KHR>,
+    pub GetDisplayModeProperties2KHR: Option<PFN_vkGetDisplayModeProperties2KHR>,
+    pub GetDisplayPlaneCapabilities2KHR: Option<PFN_vkGetDisplayPlaneCapabilities2KHR>,

    // ---- VK_KHR_fragment_shading_rate extension commands
-    GetPhysicalDeviceFragmentShadingRatesKHR: PFN_vkGetPhysicalDeviceFragmentShadingRatesKHR,
+    pub GetPhysicalDeviceFragmentShadingRatesKHR:
+        Option<PFN_vkGetPhysicalDeviceFragmentShadingRatesKHR>,

    // ---- VK_EXT_debug_report extension commands
-    CreateDebugReportCallbackEXT: PFN_vkCreateDebugReportCallbackEXT,
-    DestroyDebugReportCallbackEXT: PFN_vkDestroyDebugReportCallbackEXT,
-    DebugReportMessageEXT: PFN_vkDebugReportMessageEXT,
+    pub CreateDebugReportCallbackEXT: Option<PFN_vkCreateDebugReportCallbackEXT>,
+    pub DestroyDebugReportCallbackEXT: Option<PFN_vkDestroyDebugReportCallbackEXT>,
+    pub DebugReportMessageEXT: Option<PFN_vkDebugReportMessageEXT>,

    // ---- VK_NV_external_memory_capabilities extension commands
-    GetPhysicalDeviceExternalImageFormatPropertiesNV:
-        PFN_vkGetPhysicalDeviceExternalImageFormatPropertiesNV,
+    pub GetPhysicalDeviceExternalImageFormatPropertiesNV:
+        Option<PFN_vkGetPhysicalDeviceExternalImageFormatPropertiesNV>,

    // ---- VK_EXT_display_surface_counter extension commands
-    GetPhysicalDeviceSurfaceCapabilities2EXT: PFN_vkGetPhysicalDeviceSurfaceCapabilities2EXT,
+    pub GetPhysicalDeviceSurfaceCapabilities2EXT:
+        Option<PFN_vkGetPhysicalDeviceSurfaceCapabilities2EXT>,

    // ---- VK_EXT_debug_utils extension commands
-    CreateDebugUtilsMessengerEXT: PFN_vkCreateDebugUtilsMessengerEXT,
-    DestroyDebugUtilsMessengerEXT: PFN_vkDestroyDebugUtilsMessengerEXT,
-    SubmitDebugUtilsMessageEXT: PFN_vkSubmitDebugUtilsMessageEXT,
+    pub CreateDebugUtilsMessengerEXT: Option<PFN_vkCreateDebugUtilsMessengerEXT>,
+    pub DestroyDebugUtilsMessengerEXT: Option<PFN_vkDestroyDebugUtilsMessengerEXT>,
+    pub SubmitDebugUtilsMessageEXT: Option<PFN_vkSubmitDebugUtilsMessageEXT>,

    // ---- VK_EXT_sample_locations extension commands
-    GetPhysicalDeviceMultisamplePropertiesEXT: PFN_vkGetPhysicalDeviceMultisamplePropertiesEXT,
+    pub GetPhysicalDeviceMultisamplePropertiesEXT:
+        Option<PFN_vkGetPhysicalDeviceMultisamplePropertiesEXT>,

    // ---- VK_EXT_calibrated_timestamps extension commands
-    GetPhysicalDeviceCalibrateableTimeDomainsEXT:
-        PFN_vkGetPhysicalDeviceCalibrateableTimeDomainsEXT,
+    pub GetPhysicalDeviceCalibrateableTimeDomainsEXT:
+        Option<PFN_vkGetPhysicalDeviceCalibrateableTimeDomainsEXT>,

    // ---- VK_EXT_tooling_info extension commands
-    GetPhysicalDeviceToolPropertiesEXT: PFN_vkGetPhysicalDeviceToolPropertiesEXT,
+    pub GetPhysicalDeviceToolPropertiesEXT: Option<PFN_vkGetPhysicalDeviceToolPropertiesEXT>,

    // ---- VK_NV_cooperative_matrix extension commands
-    GetPhysicalDeviceCooperativeMatrixPropertiesNV:
-        PFN_vkGetPhysicalDeviceCooperativeMatrixPropertiesNV,
+    pub GetPhysicalDeviceCooperativeMatrixPropertiesNV:
+        Option<PFN_vkGetPhysicalDeviceCooperativeMatrixPropertiesNV>,

    // ---- VK_NV_coverage_reduction_mode extension commands
-    GetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV:
-        PFN_vkGetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV,
+    pub GetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV:
+        Option<PFN_vkGetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV>,

    // ---- VK_EXT_headless_surface extension commands
-    CreateHeadlessSurfaceEXT: PFN_vkCreateHeadlessSurfaceEXT,
+    pub CreateHeadlessSurfaceEXT: Option<PFN_vkCreateHeadlessSurfaceEXT>,

    // ---- VK_EXT_acquire_drm_display extension commands
-    AcquireDrmDisplayEXT: PFN_vkAcquireDrmDisplayEXT,
-    GetDrmDisplayEXT: PFN_vkGetDrmDisplayEXT,
+    pub AcquireDrmDisplayEXT: Option<PFN_vkAcquireDrmDisplayEXT>,
+    pub GetDrmDisplayEXT: Option<PFN_vkGetDrmDisplayEXT>,

    // ---- VK_NV_optical_flow extension commands
-    GetPhysicalDeviceOpticalFlowImageFormatsNV: PFN_vkGetPhysicalDeviceOpticalFlowImageFormatsNV,
+    pub GetPhysicalDeviceOpticalFlowImageFormatsNV:
+        Option<PFN_vkGetPhysicalDeviceOpticalFlowImageFormatsNV>,
 }
--- a/src/lib.rs
+++ b/src/lib.rs
@ -1,4 +1,7 @@
+pub mod dummy_functions;
 pub mod enums;
+pub mod layer_device_dispatch_table;
+pub mod layer_instance_dispatch_table;
 pub mod structs;

 use std::{fs::OpenOptions, io::Write, mem, os::raw::c_char, ptr};