= Debugging

To aid developers in tracking down errors in the application's use of
Vulkan, particularly in combination with an external debugger or profiler,
_debugging extensions_ may be available.

[open,refpage='VkObjectType',desc='Specify an enumeration to track object handle types',type='enums']
--

The elink:VkObjectType enumeration defines values, each of which corresponds
to a specific Vulkan handle type.
These values can: be used to associate debug information with a particular
type of object through one or more extensions.

include::../api/enums/VkObjectType.txt[]

[[debugging-object-types]]
.VkObjectType and Vulkan Handle Relationship
[width="80%",cols="<35,<23",options="header"]
|====
| elink:VkObjectType                         | Vulkan Handle Type
| ename:VK_OBJECT_TYPE_UNKNOWN               | Unknown/Undefined Handle
| ename:VK_OBJECT_TYPE_INSTANCE              | slink:VkInstance
| ename:VK_OBJECT_TYPE_PHYSICAL_DEVICE       | slink:VkPhysicalDevice
| ename:VK_OBJECT_TYPE_DEVICE                | slink:VkDevice
| ename:VK_OBJECT_TYPE_QUEUE                 | slink:VkQueue
| ename:VK_OBJECT_TYPE_SEMAPHORE             | slink:VkSemaphore
| ename:VK_OBJECT_TYPE_COMMAND_BUFFER        | slink:VkCommandBuffer
| ename:VK_OBJECT_TYPE_FENCE                 | slink:VkFence
| ename:VK_OBJECT_TYPE_DEVICE_MEMORY         | slink:VkDeviceMemory
| ename:VK_OBJECT_TYPE_BUFFER                | slink:VkBuffer
| ename:VK_OBJECT_TYPE_IMAGE                 | slink:VkImage
| ename:VK_OBJECT_TYPE_EVENT                 | slink:VkEvent
| ename:VK_OBJECT_TYPE_QUERY_POOL            | slink:VkQueryPool
| ename:VK_OBJECT_TYPE_BUFFER_VIEW           | slink:VkBufferView
| ename:VK_OBJECT_TYPE_IMAGE_VIEW            | slink:VkImageView
| ename:VK_OBJECT_TYPE_SHADER_MODULE         | slink:VkShaderModule
| ename:VK_OBJECT_TYPE_PIPELINE_CACHE        | slink:VkPipelineCache
| ename:VK_OBJECT_TYPE_PIPELINE_LAYOUT       | slink:VkPipelineLayout
| ename:VK_OBJECT_TYPE_RENDER_PASS           | slink:VkRenderPass
| ename:VK_OBJECT_TYPE_PIPELINE              | slink:VkPipeline
| ename:VK_OBJECT_TYPE_DESCRIPTOR_SET_LAYOUT | slink:VkDescriptorSetLayout
| ename:VK_OBJECT_TYPE_SAMPLER               | slink:VkSampler
| ename:VK_OBJECT_TYPE_DESCRIPTOR_POOL       | slink:VkDescriptorPool
| ename:VK_OBJECT_TYPE_DESCRIPTOR_SET        | slink:VkDescriptorSet
| ename:VK_OBJECT_TYPE_FRAMEBUFFER           | slink:VkFramebuffer
| ename:VK_OBJECT_TYPE_COMMAND_POOL          | slink:VkCommandPool
ifdef::VK_KHR_surface[]
| ename:VK_OBJECT_TYPE_SURFACE_KHR           | slink:VkSurfaceKHR
endif::VK_KHR_surface[]
ifdef::VK_KHR_surface[]
| ename:VK_OBJECT_TYPE_SWAPCHAIN_KHR         | slink:VkSwapchainKHR
endif::VK_KHR_surface[]
ifdef::VK_KHR_display[]
| ename:VK_OBJECT_TYPE_DISPLAY_KHR           | slink:VkDisplayKHR
| ename:VK_OBJECT_TYPE_DISPLAY_MODE_KHR      | slink:VkDisplayModeKHR
endif::VK_KHR_display[]
ifdef::VK_EXT_debug_report[]
| ename:VK_OBJECT_TYPE_DEBUG_REPORT_CALLBACK_EXT | slink:VkDebugReportCallbackEXT
endif::VK_EXT_debug_report[]
ifdef::VK_KHR_descriptor_update_template[]
| ename:VK_OBJECT_TYPE_DESCRIPTOR_UPDATE_TEMPLATE_KHR | slink:VkDescriptorUpdateTemplateKHR
endif::VK_KHR_descriptor_update_template[]
ifdef::VK_NVX_device_generated_commands[]
| ename:VK_OBJECT_TYPE_OBJECT_TABLE_NVX | slink:VkObjectTableNVX
| ename:VK_OBJECT_TYPE_INDIRECT_COMMANDS_LAYOUT_NVX | slink:VkIndirectCommandsLayoutNVX
endif::VK_NVX_device_generated_commands[]
ifdef::VK_EXT_validation_cache[]
| ename:VK_OBJECT_TYPE_VALIDATION_CACHE_EXT | slink:VkValidationCacheEXT
endif::VK_EXT_validation_cache[]
|====

--

If this Specification was generated with any such extensions included, they
will be described in the remainder of this chapter.

ifdef::VK_EXT_debug_marker[]
include::VK_EXT_debug_marker.txt[]
endif::VK_EXT_debug_marker[]

ifdef::VK_EXT_debug_report[]
include::VK_EXT_debug_report.txt[]
endif::VK_EXT_debug_report[]