684 lines
26 KiB
Plaintext
684 lines
26 KiB
Plaintext
[[debugging-debug-utils]]
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== Debug Utilities
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Vulkan provides flexible debugging utilities for debugging an application.
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The <<debugging-object-debug-annotation,Object Debug Annotation>> section
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describes how to associate either a name or binary data with a specific
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Vulkan object.
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The <<debugging-queue-labels,Queue Labels>> section describes how to
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annotate and group the work submitted to a queue.
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The <<debugging-command-buffer-labels,Command Buffer Labels>> section
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describes how to associate logical elements of the scene with commands in a
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slink:VkCommandBuffer.
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The <<debug-messengers,Debug Messengers>> section describes how to create
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debug messenger objects associated with an application supplied callback to
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capture debug messages from a variety of Vulkan components.
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[[debugging-object-debug-annotation]]
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=== Object Debug Annotation
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It can be useful for an application to provide its own content relative to a
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specific Vulkan object.
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The following commands allow application developers to associate
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user-defined information with Vulkan objects.
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[[debugging-object-naming]]
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==== Object Naming
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An object can be provided a user-defined name by calling
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fname:vkSetDebugUtilsObjectNameEXT as defined below.
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[open,refpage='vkSetDebugUtilsObjectNameEXT',desc='Give a user-friendly name to an object',type='protos']
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--
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include::../api/protos/vkSetDebugUtilsObjectNameEXT.txt[]
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* pname:device is the device that created the object.
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* pname:pNameInfo is a pointer to an instance of the
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slink:VkDebugUtilsObjectNameInfoEXT structure specifying the parameters
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of the name to set on the object.
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include::../validity/protos/vkSetDebugUtilsObjectNameEXT.txt[]
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--
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[open,refpage='VkDebugUtilsObjectNameInfoEXT',desc='Specify parameters of a name to give to an object',type='structs']
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--
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The sname:VkDebugUtilsObjectNameInfoEXT structure is defined as:
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include::../api/structs/VkDebugUtilsObjectNameInfoEXT.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:objectType is a elink:VkObjectType specifying the type of the
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object to be named.
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* pname:objectHandle is the object to be named.
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* pname:pObjectName is a null-terminated UTF-8 string specifying the name
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to apply to pname:objectHandle.
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Applications may: change the name associated with an object simply by
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calling fname:vkSetDebugUtilsObjectNameEXT again with a new string.
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If pname:pObjectName is an empty string, then any previously set name is
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removed.
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.Valid Usage
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****
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* [[VUID-VkDebugUtilsObjectNameInfoEXT-objectType-01905]]
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pname:objectType must: not be ename:VK_OBJECT_TYPE_UNKNOWN
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* [[VUID-VkDebugUtilsObjectNameInfoEXT-objectHandle-01906]]
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pname:objectHandle must: not be dlink:VK_NULL_HANDLE
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* [[VUID-VkDebugUtilsObjectNameInfoEXT-objectHandle-01907]]
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pname:objectHandle must: be a Vulkan object of the type associated with
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pname:objectType as defined in <<debugging-object-types>>.
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****
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include::../validity/structs/VkDebugUtilsObjectNameInfoEXT.txt[]
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--
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[[debugging-object-data-association]]
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==== Object Data Association
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In addition to setting a name for an object, debugging and validation layers
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may: have uses for additional binary data on a per-object basis that have no
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other place in the Vulkan API.
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For example, a sname:VkShaderModule could have additional debugging data
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attached to it to aid in offline shader tracing.
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Additional data can be attached to an object by calling
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fname:vkSetDebugUtilsObjectTagEXT as defined below.
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[open,refpage='vkSetDebugUtilsObjectTagEXT',desc='Attach arbitrary data to an object',type='protos']
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--
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include::../api/protos/vkSetDebugUtilsObjectTagEXT.txt[]
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* pname:device is the device that created the object.
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* pname:pTagInfo is a pointer to an instance of the
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slink:VkDebugUtilsObjectTagInfoEXT structure specifying the parameters
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of the tag to attach to the object.
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include::../validity/protos/vkSetDebugUtilsObjectTagEXT.txt[]
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--
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[open,refpage='VkDebugUtilsObjectTagInfoEXT',desc='Specify parameters of a tag to attach to an object',type='structs']
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--
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The sname:VkDebugUtilsObjectTagInfoEXT structure is defined as:
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include::../api/structs/VkDebugUtilsObjectTagInfoEXT.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:objectType is a elink:VkObjectType specifying the type of the
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object to be named.
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* pname:objectHandle is the object to be tagged.
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* pname:tagName is a numerical identifier of the tag.
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* pname:tagSize is the number of bytes of data to attach to the object.
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* pname:pTag is an array of pname:tagSize bytes containing the data to be
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associated with the object.
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The pname:tagName parameter gives a name or identifier to the type of data
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being tagged.
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This can be used by debugging layers to easily filter for only data that can
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be used by that implementation.
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.Valid Usage
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****
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* [[VUID-VkDebugUtilsObjectTagInfoEXT-objectType-01908]]
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pname:objectType must: not be ename:VK_OBJECT_TYPE_UNKNOWN
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* [[VUID-VkDebugUtilsObjectTagInfoEXT-objectHandle-01909]]
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pname:objectHandle must: not be dlink:VK_NULL_HANDLE
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* [[VUID-VkDebugUtilsObjectTagInfoEXT-objectHandle-01910]]
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pname:objectHandle must: be a Vulkan object of the type associated with
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pname:objectType as defined in <<debugging-object-types>>.
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****
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include::../validity/structs/VkDebugUtilsObjectTagInfoEXT.txt[]
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--
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[[debugging-queue-labels]]
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=== Queue Labels
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All Vulkan work must be submitted using queues.
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It is possible for an application to use multiple queues, each containing
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multiple command buffers, when performing work.
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It can be useful to identify which queue, or even where in a queue,
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something has occurred.
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To begin identifying a region using a debug label inside a queue, you may
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use the flink:vkQueueBeginDebugUtilsLabelEXT command.
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Then, when the region of interest has passed, you may end the label region
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using flink:vkQueueEndDebugUtilsLabelEXT.
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Additionally, a single debug label may be inserted at any time using
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flink:vkQueueInsertDebugUtilsLabelEXT.
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[open,refpage='vkQueueBeginDebugUtilsLabelEXT',desc='Open a queue debug label region',type='protos']
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--
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A queue debug label region is opened by calling:
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include::../api/protos/vkQueueBeginDebugUtilsLabelEXT.txt[]
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* pname:queue is the queue in which to start a debug label region.
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* pname:pLabelInfo is a pointer to an instance of the
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slink:VkDebugUtilsLabelEXT structure specifying the parameters of the
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label region to open.
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include::../validity/protos/vkQueueBeginDebugUtilsLabelEXT.txt[]
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--
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[open,refpage='VkDebugUtilsLabelEXT',desc='Specify parameters of a label region',type='structs']
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--
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The sname:VkDebugUtilsLabelEXT structure is defined as:
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include::../api/structs/VkDebugUtilsLabelEXT.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:pLabelName is a pointer to a null-terminated UTF-8 string that
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contains the name of the label.
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* pname:color is an optional RGBA color value that can be associated with
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the label.
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A particular implementation may: choose to ignore this color value.
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The values contain RGBA values in order, in the range 0.0 to 1.0.
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If all elements in pname:color are set to 0.0 then it is ignored.
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include::../validity/structs/VkDebugUtilsLabelEXT.txt[]
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--
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[open,refpage='vkQueueEndDebugUtilsLabelEXT',desc='Close a queue debug label region',type='protos']
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--
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A queue debug label region is closed by calling:
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include::../api/protos/vkQueueEndDebugUtilsLabelEXT.txt[]
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* pname:queue is the queue in which a debug label region should be closed.
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The calls to flink:vkQueueBeginDebugUtilsLabelEXT and
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flink:vkQueueEndDebugUtilsLabelEXT must: be matched and balanced.
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.Valid Usage
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****
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* [[VUID-vkQueueEndDebugUtilsLabelEXT-None-01911]]
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There must: be an outstanding fname:vkQueueBeginDebugUtilsLabelEXT
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command prior to the fname:vkQueueEndDebugUtilsLabelEXT on the queue
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****
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include::../validity/protos/vkQueueEndDebugUtilsLabelEXT.txt[]
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--
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[open,refpage='vkQueueInsertDebugUtilsLabelEXT',desc='Insert a label into a queue',type='protos']
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--
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A single label can be inserted into a queue by calling:
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include::../api/protos/vkQueueInsertDebugUtilsLabelEXT.txt[]
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* pname:queue is the queue into which a debug label will be inserted.
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* pname:pLabelInfo is a pointer to an instance of the
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slink:VkDebugUtilsLabelEXT structure specifying the parameters of the
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label to insert.
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include::../validity/protos/vkQueueInsertDebugUtilsLabelEXT.txt[]
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--
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[[debugging-command-buffer-labels]]
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=== Command Buffer Labels
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Typical Vulkan applications will submit many command buffers in each frame,
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with each command buffer containing a large number of individual commands.
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Being able to logically annotate regions of command buffers that belong
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together as well as hierarchically subdivide the frame is important to a
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developer's ability to navigate the commands viewed holistically.
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To identify the beginning of a debug label region in a command buffer,
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flink:vkCmdBeginDebugUtilsLabelEXT can: be used as defined below.
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To indicate the end of a debug label region in a command buffer,
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flink:vkCmdEndDebugUtilsLabelEXT can: be used.
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To insert a single command buffer debug label inside of a command buffer,
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flink:vkCmdInsertDebugUtilsLabelEXT can: be used as defined below.
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[open,refpage='vkCmdBeginDebugUtilsLabelEXT',desc='Open a command buffer debug label region',type='protos']
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--
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A command buffer debug label region can be opened by calling:
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include::../api/protos/vkCmdBeginDebugUtilsLabelEXT.txt[]
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* pname:commandBuffer is the command buffer into which the command is
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recorded.
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* pname:pLabelInfo is a pointer to an instance of the
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slink:VkDebugUtilsLabelEXT structure specifying the parameters of the
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label region to open.
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include::../validity/protos/vkCmdBeginDebugUtilsLabelEXT.txt[]
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--
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[open,refpage='vkCmdEndDebugUtilsLabelEXT',desc='Close a command buffer label region',type='protos']
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--
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A command buffer label region can be closed by calling:
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include::../api/protos/vkCmdEndDebugUtilsLabelEXT.txt[]
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* pname:commandBuffer is the command buffer into which the command is
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recorded.
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An application may: open a debug label region in one command buffer and
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close it in another, or otherwise split debug label regions across multiple
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command buffers or multiple queue submissions.
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When viewed from the linear series of submissions to a single queue, the
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calls to flink:vkCmdBeginDebugUtilsLabelEXT and
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flink:vkCmdEndDebugUtilsLabelEXT must: be matched and balanced.
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.Valid Usage
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****
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* [[VUID-vkCmdEndDebugUtilsLabelEXT-commandBuffer-01912]]
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There must: be an outstanding fname:vkCmdBeginDebugUtilsLabelEXT command
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prior to the fname:vkCmdEndDebugUtilsLabelEXT on the queue that
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pname:commandBuffer is submitted to
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* [[VUID-vkCmdEndDebugUtilsLabelEXT-commandBuffer-01913]]
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If pname:commandBuffer is a secondary command buffer, there must: be an
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outstanding fname:vkCmdBeginDebugUtilsLabelEXT command recorded to
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pname:commandBuffer that has not previously been ended by a call to
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fname:vkCmdEndDebugUtilsLabelEXT.
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****
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include::../validity/protos/vkCmdEndDebugUtilsLabelEXT.txt[]
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--
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[open,refpage='vkCmdInsertDebugUtilsLabelEXT',desc='Insert a label into a command buffer',type='protos']
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--
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A single debug label can be inserted into a command buffer by calling:
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include::../api/protos/vkCmdInsertDebugUtilsLabelEXT.txt[]
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* pname:commandBuffer is the command buffer into which the command is
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recorded.
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* pname:pInfo is a pointer to an instance of the
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slink:VkDebugUtilsLabelEXT structure specifying the parameters of the
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label to insert.
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include::../validity/protos/vkCmdInsertDebugUtilsLabelEXT.txt[]
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--
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[[debugging-debug-messengers]]
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=== Debug Messengers
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Vulkan allows an application to register multiple callbacks with any Vulkan
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component wishing to report debug information.
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Some callbacks may log the information to a file, others may cause a debug
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break point or other application defined behavior.
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A primary producer of callback messages are the validation layers.
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An application can: register callbacks even when no validation layers are
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enabled, but they will only be called for the Vulkan loader and, if
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implemented, other layer and driver events.
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[open,refpage='VkDebugUtilsMessengerEXT',desc='Opaque handle to a debug messenger object',type='structs']
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--
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A sname:VkDebugUtilsMessengerEXT is a messenger object which handles passing
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along debug messages to a provided debug callback.
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include::../api/handles/VkDebugUtilsMessengerEXT.txt[]
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The debug messenger will provide detailed feedback on the application's use
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of Vulkan when events of interest occur.
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When an event of interest does occur, the debug messenger will submit a
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debug message to the debug callback that was provided during its creation.
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Additionally, the debug messenger is responsible with filtering out debug
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messages that the callback isn't interested in and will only provide desired
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debug messages.
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--
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[open,refpage='vkCreateDebugUtilsMessengerEXT',desc='Create a debug messenger object',type='protos']
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--
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A debug messenger triggers a debug callback with a debug message when an
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event of interest occurs.
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To create a debug messenger which will trigger a debug callback, call:
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include::../api/protos/vkCreateDebugUtilsMessengerEXT.txt[]
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* pname:instance the instance the messenger will be used with.
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* pname:pCreateInfo points to a slink:VkDebugUtilsMessengerCreateInfoEXT
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structure which contains the callback pointer as well as defines the
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conditions under which this messenger will trigger the callback.
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* pname:pAllocator controls host memory allocation as described in the
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<<memory-allocation, Memory Allocation>> chapter.
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* pname:pMessenger is a pointer to record the
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sname:VkDebugUtilsMessengerEXT object created.
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include::../validity/protos/vkCreateDebugUtilsMessengerEXT.txt[]
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--
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[open,refpage='VkDebugUtilsMessengerCreateInfoEXT',desc='Structure specifying parameters of a newly created debug messenger',type='structs']
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--
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The definition of sname:VkDebugUtilsMessengerCreateInfoEXT is:
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include::../api/structs/VkDebugUtilsMessengerCreateInfoEXT.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:flags is 0 and reserved for future use.
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* pname:messageSeverity is a bitmask of
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elink:VkDebugUtilsMessageSeverityFlagBitsEXT specifying which severity
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of event(s) will cause this callback to be called.
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* pname:messageTypes is a bitmask of
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elink:VkDebugUtilsMessageTypeFlagBitsEXT specifying which type of
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event(s) will cause this callback to be called.
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* pname:pfnUserCallback is the application callback function to call.
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* pname:pUserData is user data to be passed to the callback.
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For each sname:VkDebugUtilsMessengerEXT that is created the
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sname:VkDebugUtilsMessengerCreateInfoEXT::pname:messageSeverity and
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sname:VkDebugUtilsMessengerCreateInfoEXT::pname:messageTypes determine when
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that sname:VkDebugUtilsMessengerCreateInfoEXT::pname:pfnUserCallback is
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called.
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The process to determine if the user's pfnUserCallback is triggered when an
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event occurs is as follows:
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. The implementation will perform a bitwise AND of the event's
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elink:VkDebugUtilsMessageSeverityFlagBitsEXT with the
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pname:messageSeverity provided during creation of the
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slink:VkDebugUtilsMessengerEXT object.
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.. If the value is 0, the message is skipped.
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. The implementation will perform bitwise AND of the event's
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elink:VkDebugUtilsMessageTypeFlagBitsEXT with the pname:messageType
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provided during the creation of the slink:VkDebugUtilsMessengerEXT
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object.
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.. If the value is 0, the message is skipped.
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. The callback will trigger a debug message for the current event
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The callback will come directly from the component that detected the event,
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unless some other layer intercepts the calls for its own purposes (filter
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them in a different way, log to a system error log, etc.).
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An application can: receive multiple callbacks if multiple
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sname:VkDebugUtilsMessengerEXT objects are created.
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A callback will always be executed in the same thread as the originating
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Vulkan call.
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A callback can: be called from multiple threads simultaneously (if the
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application is making Vulkan calls from multiple threads).
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.Valid Usage
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****
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* [[VUID-VkDebugUtilsMessengerCreateInfoEXT-pfnUserCallback-01914]]
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pname:pfnUserCallback must: be a valid
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tlink:PFN_vkDebugUtilsMessengerCallbackEXT
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****
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include::../validity/structs/VkDebugUtilsMessengerCreateInfoEXT.txt[]
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--
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[open,refpage='VkDebugUtilsMessageSeverityFlagBitsEXT',desc='Bitmask specifying which severities of events cause a debug messenger callback',type='enums']
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--
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Bits which can: be set in
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slink:VkDebugUtilsMessengerCreateInfoEXT::pname:messageSeverity, specifying
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event severities which cause a debug messenger to call the callback, are:
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include::../api/enums/VkDebugUtilsMessageSeverityFlagBitsEXT.txt[]
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* ename:VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT specifies the most
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verbose output indicating all diagnostic messages from the Vulkan
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loader, layers, and drivers should be captured.
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* ename:VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT specifies an
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informational message such as resource details that may be handy when
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debugging an application.
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* ename:VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT specifies use of
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Vulkan that may: expose an app bug.
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Such cases may not be immediately harmful, such as a fragment shader
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outputting to a location with no attachment.
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Other cases may: point to behavior that is almost certainly bad when
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unintended such as using an image whose memory has not been filled.
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In general if you see a warning but you know that the behavior is
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intended/desired, then simply ignore the warning.
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* ename:VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT specifies that an
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error that may cause undefined results, including an application crash.
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--
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[NOTE]
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.Note
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====
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The values of ename:VkDebugUtilsMessageSeverityFlagBitsEXT are sorted based
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on severity.
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The higher the flag value, the more severe the message.
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This allows for simple boolean operation comparisons when looking at
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ename:VkDebugUtilsMessageSeverityFlagBitsEXT values.
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For example:
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[source,c++]
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----------------------------------------
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if (messageSeverity >= VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT) {
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// Do something for warnings and errors
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}
|
|
----------------------------------------
|
|
|
|
In addition, space has been left between the enums to allow for later
|
|
addition of new severities in between the existing values.
|
|
====
|
|
|
|
[open,refpage='VkDebugUtilsMessageTypeFlagBitsEXT',desc='Bitmask specifying which types of events cause a debug messenger callback',type='enums']
|
|
--
|
|
|
|
Bits which can: be set in
|
|
slink:VkDebugUtilsMessengerCreateInfoEXT::pname:messageTypes, specifying
|
|
event types which cause a debug messenger to call the callback, are:
|
|
|
|
include::../api/enums/VkDebugUtilsMessageTypeFlagBitsEXT.txt[]
|
|
|
|
* ename:VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT specifies that some
|
|
general event has occurred.
|
|
This is typically a non-specification, non-performance event.
|
|
* ename:VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT specifies that
|
|
something has occurred during validation against the Vulkan
|
|
specification that may indicate invalid behavior.
|
|
* ename:VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT specifies a
|
|
potentially non-optimal use of Vulkan, e.g. using
|
|
flink:vkCmdClearColorImage when setting
|
|
slink:VkAttachmentDescription::pname:loadOp to
|
|
ename:VK_ATTACHMENT_LOAD_OP_CLEAR would have worked.
|
|
|
|
--
|
|
|
|
[open,refpage='PFN_vkDebugUtilsMessengerCallbackEXT',desc='Application-defined debug messenger callback function',type='funcpointers']
|
|
--
|
|
|
|
The prototype for the
|
|
slink:VkDebugUtilsMessengerCreateInfoEXT::pname:pfnUserCallback function
|
|
implemented by the application is:
|
|
|
|
include::../api/funcpointers/PFN_vkDebugUtilsMessengerCallbackEXT.txt[]
|
|
|
|
* pname:messageSeverity specifies the
|
|
elink:VkDebugUtilsMessageSeverityFlagBitsEXT that triggered this
|
|
callback.
|
|
* pname:messageTypes specifies the
|
|
elink:VkDebugUtilsMessageTypeFlagBitsEXT that triggered this callback.
|
|
* pname:pCallbackData contains all the callback related data in the
|
|
slink:VkDebugUtilsMessengerCallbackDataEXT structure.
|
|
* pname:pUserData is the user data provided when the
|
|
slink:VkDebugUtilsMessengerEXT was created.
|
|
|
|
The callback must: not call flink:vkDestroyDebugUtilsMessengerEXT.
|
|
|
|
The callback returns a basetype:VkBool32, which is interpreted in a
|
|
layer-specified manner.
|
|
The application should: always return ename:VK_FALSE.
|
|
The ename:VK_TRUE value is reserved for use in layer development.
|
|
|
|
--
|
|
|
|
[open,refpage='VkDebugUtilsMessengerCallbackDataEXT',desc='Structure specifying parameters returned to the callback',type='structs']
|
|
--
|
|
|
|
The definition of sname:VkDebugUtilsMessengerCallbackDataEXT is:
|
|
|
|
include::../api/structs/VkDebugUtilsMessengerCallbackDataEXT.txt[]
|
|
|
|
* pname:sType is the type of this structure.
|
|
* pname:pNext is `NULL` or a pointer to an extension-specific structure.
|
|
* pname:flags is 0 and reserved for future use.
|
|
* pname:pMessageIdName is a null-terminated string that identifies the the
|
|
particular message ID that is associated with the provided message.
|
|
If the message corresponds to a validation layer message, then this
|
|
string may contain the portion of the Vulkan specification that is
|
|
believed to have been violated.
|
|
* pname:messageIdNumber is the ID number of the triggering message.
|
|
If the message corresponds to a validation layer message, then this
|
|
number is related to the internal number associated with the message
|
|
being triggered.
|
|
* pname:pMessage is a null-terminated string detailing the trigger
|
|
conditions.
|
|
* pname:queueLabelCount is a count of items contained in the
|
|
pname:pQueueLabels array.
|
|
* pname:pQueueLabels is NULL or a pointer to an array of
|
|
slink:VkDebugUtilsLabelEXT active in the current sname:VkQueue at the
|
|
time the callback was triggered.
|
|
Refer to <<debugging-queue-labels,Queue Labels>> for more information.
|
|
* pname:cmdBufLabelCount is a count of items contained in the
|
|
pname:pCmdBufLabels array.
|
|
* pname:pCmdBufLabels is NULL or a pointer to an array of
|
|
slink:VkDebugUtilsLabelEXT active in the current sname:VkCommandBuffer
|
|
at the time the callback was triggered.
|
|
Refer to <<debugging-command-buffer-labels, Command Buffer Labels>> for
|
|
more information.
|
|
* pname:objectCount is a count of items contained in the pname:pObjects
|
|
array.
|
|
* pname:pObjects is a pointer to an array of
|
|
slink:VkDebugUtilsObjectNameInfoEXT objects related to the detected
|
|
issue.
|
|
The array is roughly in order or importance, but the 0th element is
|
|
always guaranteed to be the most important object for this message.
|
|
|
|
[NOTE]
|
|
.Note
|
|
====
|
|
This structure should only be considered valid during the lifetime of the
|
|
triggered callback.
|
|
====
|
|
|
|
Since adding queue and command buffer labels behaves like pushing and
|
|
popping onto a stack, the order of both pname:pQueueLabels and
|
|
pname:pCmdBufLabels is based on the order the labels were defined.
|
|
The result is that the first label in either pname:pQueueLabels or
|
|
pname:pCmdBufLabels will be the first defined (and therefore the oldest)
|
|
while the last label in each list will be the most recent.
|
|
|
|
[NOTE]
|
|
.Note
|
|
====
|
|
pname:pQueueLabels will only be non-NULL if one of the objects in
|
|
pname:pObjects can be related directly to a defined sname:VkQueue which has
|
|
had one or more labels associated with it.
|
|
|
|
Likewise, pname:pCmdBufLabels will only be non-NULL if one of the objects in
|
|
pname:pObjects can be related directly to a defined sname:VkCommandBuffer
|
|
which has had one or more labels associated with it.
|
|
Additionally, while command buffer labels allow for beginning and ending
|
|
across different command buffers, the debug messaging framework cannot:
|
|
guarantee that labels in pname:pCmdBufLables will contain those defined
|
|
outside of the associated command buffer.
|
|
This is partially due to the fact that the association of one command buffer
|
|
with another may not have been defined at the time the debug message is
|
|
triggered.
|
|
====
|
|
|
|
include::../validity/structs/VkDebugUtilsMessengerCallbackDataEXT.txt[]
|
|
|
|
--
|
|
|
|
[open,refpage='vkSubmitDebugUtilsMessageEXT',desc='Inject a message into a debug stream',type='protos']
|
|
--
|
|
|
|
There may be times that a user wishes to intentionally submit a debug
|
|
message.
|
|
To do this, call:
|
|
|
|
include::../api/protos/vkSubmitDebugUtilsMessageEXT.txt[]
|
|
|
|
* pname:instance is the debug stream's sname:VkInstance.
|
|
* pname:messageSeverity is the
|
|
elink:VkDebugUtilsMessageSeverityFlagBitsEXT severity of this
|
|
event/message.
|
|
* pname:messageTypes is a bitmask of
|
|
elink:VkDebugUtilsMessageTypeFlagBitsEXT specifying which type of
|
|
event(s) to identify with this message.
|
|
* pname:pCallbackData contains all the callback related data in the
|
|
slink:VkDebugUtilsMessengerCallbackDataEXT structure.
|
|
|
|
The call will propagate through the layers and generate callback(s) as
|
|
indicated by the message's flags.
|
|
The parameters are passed on to the callback in addition to the
|
|
pname:pUserData value that was defined at the time the messenger was
|
|
registered.
|
|
|
|
include::../validity/protos/vkSubmitDebugUtilsMessageEXT.txt[]
|
|
|
|
--
|
|
|
|
[open,refpage='vkDestroyDebugUtilsMessengerEXT',desc='Destroy a debug messenger object',type='protos']
|
|
--
|
|
|
|
To destroy a sname:VkDebugUtilsMessengerEXT object, call:
|
|
|
|
include::../api/protos/vkDestroyDebugUtilsMessengerEXT.txt[]
|
|
|
|
* pname:instance the instance where the callback was created.
|
|
* pname:messenger the sname:VkDebugUtilsMessengerEXT object to destroy.
|
|
pname:messenger is an externally synchronized object and must: not be
|
|
used on more than one thread at a time.
|
|
This means that fname:vkDestroyDebugUtilsMessengerEXT must: not be called
|
|
when a callback is active.
|
|
* pname:pAllocator controls host memory allocation as described in the
|
|
<<memory-allocation, Memory Allocation>> chapter.
|
|
|
|
.Valid Usage
|
|
****
|
|
* [[VUID-vkDestroyDebugUtilsMessengerEXT-messenger-01915]]
|
|
If sname:VkAllocationCallbacks were provided when pname:messenger was
|
|
created, a compatible set of callbacks must: be provided here
|
|
* [[VUID-vkDestroyDebugUtilsMessengerEXT-messenger-01916]]
|
|
If no sname:VkAllocationCallbacks were provided when pname:messenger was
|
|
created, pname:pAllocator must: be `NULL`
|
|
****
|
|
|
|
include::../validity/protos/vkDestroyDebugUtilsMessengerEXT.txt[]
|
|
|
|
--
|
|
|