Vulkan-Docs/doc/specs/vulkan/chapters/VK_EXT_debug_report.txt
Jon Leech b9e9296cd8 Change log for June 24, 2017 Vulkan 1.0.53 spec update:
* Bump API patch number and header version number to 53 for this update.

Github Issues:

Internal Issues:

  * Clarify mappings of coordinates for mutable, compatible image views in
    slink:VkImageViewCreateInfo (internal issue 815).
  * Make ename:VK_BIND_SFR_BIT require a logical device with multiple
    physical devices, so that standard sparse image block dimensions are
    only required on systems that support multi-GPU (internal issue 835).
  * Convert all files from use of // refBegin .. // refEnd comments to
    delimit ref pages, to use of open blocks, and update style guide
    accordingly (internal issue 839).
  * Add valid usage for slink:VkWriteDescriptorSet when performing updates
    to a ename:VK_STORAGE_IMAGE descriptor with layout
    ename:VK_IMAGE_LAYOUT_GENERAL.
  * Add a hack to the validity generator script to support an odd
    interaction between flink:vkCmdFillBuffer and an extension (internal
    issue 853).
  * Remove redundant text describing slink:VkBufferCreateInfo::pname:usage,
    which was already covered by implicit valid usage (internal issue 854).
  * Update implicit validity generator script to properly handle the
    pname:sType and pname:pNext members of "returnedonly" structures
    (internal issue 874).
  * Note that slink:VkApplicationInfo::pname:pApplicationName &
    slink:VkApplicationInfo::pname:pEngineName are optional, and add missing
    implicit valid usage statements for flink:vkDestroyInstance.
  * Added missing valid usage for flink:vkCmdWriteTimestamp to require a
    timestamp query pool.
  * Simplify and/or split "`non-atomic`" valid usage statements.

New Extensions:

  * `VK_AMD_gpu_shader_int16`
  * `VK_EXT_blend_operation_advanced`
  * `VK_EXT_sampler_filter_minmax`
  * `VK_NV_framebuffer_mixed_samples`

-----------------------------------------------------
Note: the 1.0.52 spec wasn't published on github, so the 1.0.53 release
combines both change sets.
-----------------------------------------------------

Change log for June 13, 2017 Vulkan 1.0.52 spec update:

  * Bump API patch number and header version number to 52 for this update.

Github Issues:

Internal Issues:

  * Clarify behavior when non-coherent memory has
    <<memory-device-unmap-does-not-flush, not been flushed before being
    unmapped>> (internal issue 819).
  * Fix description of code:WorkgroupSize builtin to note it decorates an
    object, not a variable (internal issue 836).
  * Fix asciidoc attributes so that trailing '{plus}' symbols in [eq] style
    equations are rendered properly (internal issue 845).
  * Add language to the "`Extension Handles, Objects, Enums, and Typedefs`"
    section of the Procedures and Conventions document stating that any new
    handle type requires a corresponding entry in the elink:VkObjectType
    enumerated type (internal issue 856).
  * Update style guide to use slink macro for Vulkan handle type names, and
    define narrow conditions under which to use the *name and *text macros
    instead of *link (internal issue 886).
  * Add a dependency of the <<VK_KHX_device_group,VK_KHX_device_group>>
    extension on VK_KHX_device_group_creation to +vk.xml+ and the extension
    appendix.
  * Change the copyright on Vulkan specification asciidoc *source* files to
    CC-BY 4.0, and update the proprietary Khronos copyright applied to the
    generated *output* formats (internal issue 327). This enables broader
    re-use and modification of the Vulkan specification sources, while not
    affecting the Reciprocal IP License between Vulkan Adopters and Working
    Group Members.

New Extensions:

  * `VK_NV_fill_rectangle`
  * `VK_NV_fragment_coverage_to_color`
2017-06-26 19:32:10 -07:00

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// This section is included inside the Debugging chapter (debugging.txt)
[[debugging-debug-report-callbacks]]
== Debug Report Callbacks
[open,refpage='VkDebugReportCallbackEXT',desc='Opaque handle to a debug report callback object',type='handles']
--
Debug report callbacks are represented by sname:VkDebugReportCallbackEXT
handles:
include::../api/handles/VkDebugReportCallbackEXT.txt[]
--
[open,refpage='vkCreateDebugReportCallbackEXT',desc='Create a debug report callback object',type='protos']
--
Debug report callbacks give more detailed feedback on the application's use
of Vulkan when events of interest occur.
To register a debug report callback, an application uses
flink:vkCreateDebugReportCallbackEXT.
include::../api/protos/vkCreateDebugReportCallbackEXT.txt[]
* pname:instance the instance the callback will be logged on.
* pname:pCreateInfo points to a slink:VkDebugReportCallbackCreateInfoEXT
structure which defines the conditions under which this callback will be
called.
* pname:pAllocator controls host memory allocation as described in the
<<memory-allocation, Memory Allocation>> chapter.
* pname:pCallback is a pointer to record the
sname:VkDebugReportCallbackEXT object created.
include::../validity/protos/vkCreateDebugReportCallbackEXT.txt[]
--
[open,refpage='VkDebugReportCallbackCreateInfoEXT',desc='Structure specifying parameters of a newly created debug report callback',type='structs']
--
The definition of slink:VkDebugReportCallbackCreateInfoEXT is:
include::../api/structs/VkDebugReportCallbackCreateInfoEXT.txt[]
* pname:sType is the type of this structure.
* pname:pNext is `NULL` or a pointer to an extension-specific structure.
* pname:flags is a bitmask of elink:VkDebugReportFlagBitsEXT specifying
which event(s) will cause this callback to be called.
* pname:pfnCallback is the application callback function to call.
* pname:pUserData is user data to be passed to the callback.
For each sname:VkDebugReportCallbackEXT that is created the
sname:VkDebugReportCallbackCreateInfoEXT::pname:flags determine when that
sname:VkDebugReportCallbackCreateInfoEXT::pname:pfnCallback is called.
When an event happens, the implementation will do a bitwise AND of the
event's elink:VkDebugReportFlagBitsEXT flags to each
sname:VkDebugReportCallbackEXT object's flags.
For each non-zero result the corresponding callback will be called.
The callback will come directly from the component that detected the event,
unless some other layer intercepts the calls for its own purposes (filter
them in a different way, log to a system error log, etc.).
An application may: receive multiple callbacks if multiple
sname:VkDebugReportCallbackEXT objects were created.
A callback will always be executed in the same thread as the originating
Vulkan call.
A callback may be called from multiple threads simultaneously (if the
application is making Vulkan calls from multiple threads).
.Valid Usage
****
* [[VUID-VkDebugReportCallbackCreateInfoEXT-pfnCallback-01385]]
pname:pfnCallback must: be a valid tlink:PFN_vkDebugReportCallbackEXT
****
include::../validity/structs/VkDebugReportCallbackCreateInfoEXT.txt[]
--
[open,refpage='VkDebugReportFlagBitsEXT',desc='Bitmask specifying events which cause a debug report callback',type='enums']
--
Bits which can: be set in
slink:VkDebugReportCallbackCreateInfoEXT::pname:flags, specifying events
which cause a debug report, are:
include::../api/enums/VkDebugReportFlagBitsEXT.txt[]
* ename:VK_DEBUG_REPORT_ERROR_BIT_EXT specifies that an error that may
cause undefined results, including an application crash.
* ename:VK_DEBUG_REPORT_WARNING_BIT_EXT specifies use of Vulkan that may:
expose an app bug.
Such cases may not be immediately harmful, such as a fragment shader
outputting to a location with no attachment.
Other cases may: point to behavior that is almost certainly bad when
unintended such as using an image whose memory has not been filled.
In general if you see a warning but you know that the behavior is
intended/desired, then simply ignore the warning.
* ename:VK_DEBUG_REPORT_PERFORMANCE_WARNING_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.
* ename:VK_DEBUG_REPORT_INFORMATION_BIT_EXT specifies an informational
message such as resource details that may be handy when debugging an
application.
* ename:VK_DEBUG_REPORT_DEBUG_BIT_EXT specifies diagnostic information
from the implementation and layers.
--
[open,refpage='PFN_vkDebugReportCallbackEXT',desc='Application-defined debug report callback function',type='funcpointers']
--
The prototype for the
slink:VkDebugReportCallbackCreateInfoEXT::pname:pfnCallback function
implemented by the application is:
include::../api/funcpointers/PFN_vkDebugReportCallbackEXT.txt[]
* pname:flags indicates the elink:VkDebugReportFlagBitsEXT that triggered
this callback.
* pname:objectType is a elink:VkDebugReportObjectTypeEXT value specifying
the type of object being used or created at the time the event was
triggered.
* pname:object is the object where the issue was detected.
If pname:objectType is ename:VK_DEBUG_REPORT_OBJECT_TYPE_UNKNOWN_EXT,
pname:object is undefined.
* pname:location is a component (layer, driver, loader) defined value that
indicates the _location_ of the trigger.
This is an optional value.
* pname:messageCode is a layer-defined value indicating what test
triggered this callback.
* pname:pLayerPrefix is a null-terminated string that is an abbreviation
of the name of the component making the callback.
pname:pLayerPrefix is only valid for the duration of the callback.
* pname:pMessage is a null-terminated string detailing the trigger
conditions.
pname:pMessage is only valid for the duration of the callback.
* pname:pUserData is the user data given when the
slink:VkDebugReportCallbackEXT was created.
The callback must: not call fname:vkDestroyDebugReportCallbackEXT.
The callback returns a basetype:VkBool32 that indicates to the calling layer
the application's desire to abort the call.
A value of ename:VK_TRUE indicates that the application wants to abort this
call.
If the application returns ename:VK_FALSE, the command must: not be aborted.
Applications should: always return ename:VK_FALSE so that they see the same
behavior with and without validation layers enabled.
If the application returns ename:VK_TRUE from its callback and the Vulkan
call being aborted returns a elink:VkResult, the layer will return
ename:VK_ERROR_VALIDATION_FAILED_EXT.
--
[open,refpage='VkDebugReportObjectTypeEXT',desc='Specify the type of an object handle',type='enums']
--
Possible values passed to the pname:objectType parameter of the callback
function specified by
slink:VkDebugReportCallbackCreateInfoEXT::pname:pfnCallback, specifying the
type of object handle being reported, are:
include::../api/enums/VkDebugReportObjectTypeEXT.txt[]
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_UNKNOWN_EXT specifies an unknown
object.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_INSTANCE_EXT specifies a
slink:VkInstance.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_PHYSICAL_DEVICE_EXT specifies a
slink:VkPhysicalDevice.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT specifies a slink:VkDevice.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_QUEUE_EXT specifies a slink:VkQueue.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_SEMAPHORE_EXT specifies a
slink:VkSemaphore.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_BUFFER_EXT specifies a
slink:VkCommandBuffer.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_FENCE_EXT specifies a slink:VkFence.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT specifies a
slink:VkDeviceMemory.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT specifies a slink:VkBuffer.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT specifies a slink:VkImage.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_EVENT_EXT specifies a slink:VkEvent.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_QUERY_POOL_EXT specifies a
slink:VkQueryPool.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_VIEW_EXT specifies a
slink:VkBufferView.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT specifies a
slink:VkImageView.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT specifies a
slink:VkShaderModule.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_CACHE_EXT specifies a
slink:VkPipelineCache.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_LAYOUT_EXT specifies a
slink:VkPipelineLayout.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT specifies a
slink:VkRenderPass.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_EXT specifies a
slink:VkPipeline.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_SET_LAYOUT_EXT specifies a
slink:VkDescriptorSetLayout.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_SAMPLER_EXT specifies a
slink:VkSampler.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_POOL_EXT specifies a
slink:VkDescriptorPool.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_SET_EXT specifies a
slink:VkDescriptorSet.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT specifies a
slink:VkFramebuffer.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_POOL_EXT specifies a
slink:VkCommandPool.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_SURFACE_KHR_EXT specifies a
slink:VkSurfaceKHR.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_SWAPCHAIN_KHR_EXT specifies a
slink:VkSwapchainKHR.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DEBUG_REPORT_CALLBACK_EXT_EXT
specifies a slink:VkDebugReportCallbackEXT.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DISPLAY_KHR_EXT specifies a
slink:VkDisplayKHR.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DISPLAY_MODE_KHR_EXT specifies a
slink:VkDisplayModeKHR.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_OBJECT_TABLE_NVX_EXT specifies a
slink:VkObjectTableNVX.
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_INDIRECT_COMMANDS_LAYOUT_NVX_EXT
specifies a slink:VkIndirectCommandsLayoutNVX.
ifdef::VK_KHR_descriptor_update_template[]
* ename:VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_UPDATE_TEMPLATE_KHR_EXT
specifies a slink:VkDescriptorUpdateTemplateKHR.
endif::VK_KHR_descriptor_update_template[]
[NOTE]
.Note
====
The primary expected use of ename:VK_ERROR_VALIDATION_FAILED_EXT is for
validation layer testing.
It is not expected that an application would see this error code during
normal use of the validation layers.
====
--
[open,refpage='vkDebugReportMessageEXT',desc='Inject a message into a debug stream',type='protos']
--
To inject its own messages into the debug stream, call:
include::../api/protos/vkDebugReportMessageEXT.txt[]
* pname:instance is the debug stream's sname:VkInstance.
* pname:flags indicates the elink:VkDebugReportFlagBitsEXT classification
of this event/message.
* pname:objectType is a elink:VkDebugReportObjectTypeEXT specifying the
type of object being used or created at the time the event was
triggered.
* pname:object this is the object where the issue was detected.
pname:object can: be ename:VK_NULL_HANDLE if there is no object
associated with the event.
* pname:location is an application defined value.
* pname:messageCode is an application defined value.
* pname:pLayerPrefix is the abbreviation of the component making this
event/message.
* pname:pMessage is a null-terminated string detailing the trigger
conditions.
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 callback was
registered.
.Valid Usage
****
* [[VUID-vkDebugReportMessageEXT-object-01241]]
pname:object must: be a Vulkan object or ename:VK_NULL_HANDLE
****
include::../validity/protos/vkDebugReportMessageEXT.txt[]
--
[open,refpage='vkDestroyDebugReportCallbackEXT',desc='Destroy a debug report callback object',type='protos']
--
To destroy a sname:VkDebugReportCallbackEXT object, call:
include::../api/protos/vkDestroyDebugReportCallbackEXT.txt[]
* pname:instance the instance where the callback was created.
* pname:callback the sname:VkDebugReportCallbackEXT object to destroy.
pname:callback is an externally synchronized object and must: not be used
on more than one thread at a time.
This means that fname:vkDestroyDebugReportCallbackEXT 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-vkDestroyDebugReportCallbackEXT-instance-01242]]
If sname:VkAllocationCallbacks were provided when pname:callback was
created, a compatible set of callbacks must: be provided here
* [[VUID-vkDestroyDebugReportCallbackEXT-instance-01243]]
If no sname:VkAllocationCallbacks were provided when pname:callback was
created, pname:pAllocator must: be `NULL`
****
include::../validity/protos/vkDestroyDebugReportCallbackEXT.txt[]
--