vkCmdBindTransformFeedbackBuffersEXT - Bind transform feedback buffers to a command buffer

Description

The values taken from elements i of pBuffers, pOffsets and pSizes replace the current state for the transform feedback binding firstBinding + i, for i in [0, bindingCount). The transform feedback binding is updated to start at the offset indicated by pOffsets[i] from the start of the buffer pBuffers[i].

Valid Usage

• PhysicalDeviceTransformFeedbackFeaturesEXT::transformFeedback must be enabled

• firstBinding must be less than PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• The sum of firstBinding and bindingCount must be less than or equal to PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• All elements of pOffsets must be less than the size of the corresponding element in pBuffers
• All elements of pOffsets must be a multiple of 4
• All elements of pBuffers must have been created with the BUFFER_USAGE_TRANSFORM_FEEDBACK_BUFFER_BIT_EXT flag
• If the optional pSize array is specified, each element of pSizes must either be WHOLE_SIZE, or be less than or equal to PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBufferSize
• All elements of pSizes must be either WHOLE_SIZE, or less than or equal to the size of the corresponding buffer in pBuffers
• All elements of pOffsets plus pSizes, where the pSizes, element is not WHOLE_SIZE, must be less than or equal to the size of the corresponding buffer in pBuffers
• Each element of pBuffers that is non-sparse must be bound completely and contiguously to a single DeviceMemory object
• Transform feedback must not be active when the cmdBindTransformFeedbackBuffersEXT command is recorded

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• pBuffers must be a valid pointer to an array of bindingCount valid Buffer handles
• pOffsets must be a valid pointer to an array of bindingCount DeviceSize values
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• bindingCount must be greater than 0
• Both of commandBuffer, and the elements of pBuffers must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

Buffer, CommandBuffer, DeviceSize

vkCmdBeginTransformFeedbackEXT - Make transform feedback active in the command buffer

Description

The active transform feedback buffers will capture primitives emitted from the corresponding XfbBuffer in the bound graphics pipeline. Any XfbBuffer emitted that does not output to an active transform feedback buffer will not be captured.

Valid Usage

• PhysicalDeviceTransformFeedbackFeaturesEXT::transformFeedback must be enabled

• Transform feedback must not be active
• firstCounterBuffer must be less than PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• The sum of firstCounterBuffer and counterBufferCount must be less than or equal to PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• If counterBufferCount is not 0, and pCounterBuffers is not NULL, pCounterBuffers must be a valid pointer to an array of counterBufferCount Buffer handles that are either valid or NULL_HANDLE
• For each buffer handle in the array, if it is not NULL_HANDLE it must reference a buffer large enough to hold 4 bytes at the corresponding offset from the pCounterBufferOffsets array
• If pCounterBuffer is NULL, then pCounterBufferOffsets must also be NULL
• For each buffer handle in the pCounterBuffers array that is not NULL_HANDLE it must have been created with a usage value containing BUFFER_USAGE_TRANSFORM_FEEDBACK_COUNTER_BUFFER_BIT_EXT
• The last vertex processing stage of the bound graphics pipeline must have been declared with the Xfb execution mode
• Transform feedback must not be made active in a render pass instance with multiview enabled

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• If counterBufferCount is not 0, and pCounterBufferOffsets is not NULL, pCounterBufferOffsets must be a valid pointer to an array of counterBufferCount DeviceSize values
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• Both of commandBuffer, and the elements of pCounterBuffers that are valid handles of non-ignored parameters must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

Buffer, CommandBuffer, DeviceSize

This function will call the supplied action between calls to cmdBeginTransformFeedbackEXT and cmdEndTransformFeedbackEXT

Note that cmdEndTransformFeedbackEXT is *not* called if an exception is thrown by the inner action.

vkCmdEndTransformFeedbackEXT - Make transform feedback inactive in the command buffer

Valid Usage

• PhysicalDeviceTransformFeedbackFeaturesEXT::transformFeedback must be enabled

• Transform feedback must be active
• firstCounterBuffer must be less than PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• The sum of firstCounterBuffer and counterBufferCount must be less than or equal to PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackBuffers
• If counterBufferCount is not 0, and pCounterBuffers is not NULL, pCounterBuffers must be a valid pointer to an array of counterBufferCount Buffer handles that are either valid or NULL_HANDLE
• For each buffer handle in the array, if it is not NULL_HANDLE it must reference a buffer large enough to hold 4 bytes at the corresponding offset from the pCounterBufferOffsets array
• If pCounterBuffer is NULL, then pCounterBufferOffsets must also be NULL
• For each buffer handle in the pCounterBuffers array that is not NULL_HANDLE it must have been created with a usage value containing BUFFER_USAGE_TRANSFORM_FEEDBACK_COUNTER_BUFFER_BIT_EXT

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• If counterBufferCount is not 0, and pCounterBufferOffsets is not NULL, pCounterBufferOffsets must be a valid pointer to an array of counterBufferCount DeviceSize values
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• Both of commandBuffer, and the elements of pCounterBuffers that are valid handles of non-ignored parameters must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

Buffer, CommandBuffer, DeviceSize

vkCmdBeginQueryIndexedEXT - Begin an indexed query

Description

The cmdBeginQueryIndexedEXT command operates the same as the cmdBeginQuery command, except that it also accepts a query type specific index parameter.

Valid Usage

• queryPool must have been created with a queryType that differs from that of any queries that are active within commandBuffer

• All queries used by the command must be unavailable
• The queryType used to create queryPool must not be QUERY_TYPE_TIMESTAMP
• If the precise occlusion queries feature is not enabled, or the queryType used to create queryPool was not QUERY_TYPE_OCCLUSION, flags must not contain QUERY_CONTROL_PRECISE_BIT
• query must be less than the number of queries in queryPool
• If the queryType used to create queryPool was QUERY_TYPE_OCCLUSION, the CommandPool that commandBuffer was allocated from must support graphics operations
• If the queryType used to create queryPool was QUERY_TYPE_PIPELINE_STATISTICS and any of the pipelineStatistics indicate graphics operations, the CommandPool that commandBuffer was allocated from must support graphics operations
• If the queryType used to create queryPool was QUERY_TYPE_PIPELINE_STATISTICS and any of the pipelineStatistics indicate compute operations, the CommandPool that commandBuffer was allocated from must support compute operations
• commandBuffer must not be a protected command buffer
• If called within a render pass instance, the sum of query and the number of bits set in the current subpass’s view mask must be less than or equal to the number of queries in queryPool
• If the queryType used to create queryPool was QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT the CommandPool that commandBuffer was allocated from must support graphics operations
• If the queryType used to create queryPool was QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT the index parameter must be less than PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackStreams
• If the queryType used to create queryPool was not QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT the index must be zero
• If the queryType used to create queryPool was QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT then PhysicalDeviceTransformFeedbackPropertiesEXT::transformFeedbackQueries must be supported
• If queryPool was created with a queryType of QUERY_TYPE_PERFORMANCE_QUERY_KHR, the profiling lock must have been held before beginCommandBuffer was called on commandBuffer
• If queryPool was created with a queryType of QUERY_TYPE_PERFORMANCE_QUERY_KHR and one of the counters used to create queryPool was PERFORMANCE_COUNTER_SCOPE_COMMAND_BUFFER_KHR, the query begin must be the first recorded command in commandBuffer
• If queryPool was created with a queryType of QUERY_TYPE_PERFORMANCE_QUERY_KHR and one of the counters used to create queryPool was PERFORMANCE_COUNTER_SCOPE_RENDER_PASS_KHR, the begin command must not be recorded within a render pass instance
• If queryPool was created with a queryType of QUERY_TYPE_PERFORMANCE_QUERY_KHR and another query pool with a queryType QUERY_TYPE_PERFORMANCE_QUERY_KHR has been used within commandBuffer, its parent primary command buffer or secondary command buffer recorded within the same parent primary command buffer as commandBuffer, the performanceCounterMultipleQueryPools feature must be enabled
• If queryPool was created with a queryType of QUERY_TYPE_PERFORMANCE_QUERY_KHR, this command must not be recorded in a command buffer that, either directly or through secondary command buffers, also contains a cmdResetQueryPool command affecting the same query

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• queryPool must be a valid QueryPool handle
• flags must be a valid combination of QueryControlFlagBits values
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics, or compute operations
• Both of commandBuffer, and queryPool must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

CommandBuffer, QueryControlFlags, QueryPool

This function will call the supplied action between calls to cmdBeginQueryIndexedEXT and cmdEndQueryIndexedEXT

Note that cmdEndQueryIndexedEXT is *not* called if an exception is thrown by the inner action.

vkCmdEndQueryIndexedEXT - Ends a query

Description

The cmdEndQueryIndexedEXT command operates the same as the cmdEndQuery command, except that it also accepts a query type specific index parameter.

Valid Usage

• All queries used by the command must be active

• query must be less than the number of queries in queryPool
• commandBuffer must not be a protected command buffer
• If cmdEndQueryIndexedEXT is called within a render pass instance, the sum of query and the number of bits set in the current subpass’s view mask must be less than or equal to the number of queries in queryPool
• If the queryType used to create queryPool was QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT the index parameter must be less than PhysicalDeviceTransformFeedbackPropertiesEXT::maxTransformFeedbackStreams
• If the queryType used to create queryPool was not QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT the index must be zero
• If the queryType used to create queryPool was QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT index must equal the index used to begin the query

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• queryPool must be a valid QueryPool handle
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics, or compute operations
• Both of commandBuffer, and queryPool must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

CommandBuffer, QueryPool

vkCmdDrawIndirectByteCountEXT - Draw primitives where the vertex count is derived from the counter byte value in the counter buffer

Description

When the command is executed, primitives are assembled in the same way as done with cmdDraw except the vertexCount is calculated based on the byte count read from counterBuffer at offset counterBufferOffset. The assembled primitives execute the bound graphics pipeline.

The effective vertexCount is calculated as follows:

const uint32_t * counterBufferPtr = (const uint8_t *)counterBuffer.address + counterBufferOffset;
vertexCount = floor(max(0, (*counterBufferPtr - counterOffset)) / vertexStride);

The effective firstVertex is zero.

Valid Usage

• If a Sampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT

• If a ImageView is accessed using atomic operations as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT
• If a ImageView is sampled with FILTER_CUBIC_EXT as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT
• Any ImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a ImageViewType and format that supports cubic filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by getPhysicalDeviceImageFormatProperties2
• Any ImageView being sampled with FILTER_CUBIC_EXT with a reduction mode of either SAMPLER_REDUCTION_MODE_MIN or SAMPLER_REDUCTION_MODE_MAX as a result of this command must have a ImageViewType and format that supports cubic filtering together with minmax filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by getPhysicalDeviceImageFormatProperties2
• Any Image created with a ImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a SamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• For each set n that is statically used by the Pipeline bound to the pipeline bind point used by this command, a descriptor set must have been bound to n at the same pipeline bind point, with a PipelineLayout that is compatible for set n, with the PipelineLayout used to create the current Pipeline, as described in ???
• For each push constant that is statically used by the Pipeline bound to the pipeline bind point used by this command, a push constant value must have been set for the same pipeline bind point, with a PipelineLayout that is compatible for push constants, with the PipelineLayout used to create the current Pipeline, as described in ???
• Descriptors in each bound descriptor set, specified via cmdBindDescriptorSets, must be valid if they are statically used by the Pipeline bound to the pipeline bind point used by this command
• A valid pipeline must be bound to the pipeline bind point used by this command
• If the Pipeline object bound to the pipeline bind point used by this command requires any dynamic state, that state must have been set for commandBuffer, and done so after any previously bound pipeline with the corresponding state not specified as dynamic
• There must not have been any calls to dynamic state setting commands for any state not specified as dynamic in the Pipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used to sample from any Image with a ImageView of the type IMAGE_VIEW_TYPE_3D, IMAGE_VIEW_TYPE_CUBE, IMAGE_VIEW_TYPE_1D_ARRAY, IMAGE_VIEW_TYPE_2D_ARRAY or IMAGE_VIEW_TYPE_CUBE_ARRAY, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions with ImplicitLod, Dref or Proj in their name, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions that includes a LOD bias or any offset values, in any shader stage
• If the robust buffer access feature is not enabled, and if the Pipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If the robust buffer access feature is not enabled, and if the Pipeline object bound to the pipeline bind point used by this command accesses a storage buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If commandBuffer is an unprotected command buffer, any resource accessed by the Pipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If a ImageView is accessed using OpImageWrite as a result of this command, then the Type of the Texel operand of that instruction must have at least as many components as the image view’s format.
• If a BufferView is accessed using OpImageWrite as a result of this command, then the Type of the Texel operand of that instruction must have at least as many components as the image view’s format.
• If a ImageView with a Format that has a 64-bit channel width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64.
• If a ImageView with a Format that has a channel width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32.
• If a BufferView with a Format that has a 64-bit channel width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64.
• If a BufferView with a Format that has a channel width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32.
• If the sparseImageInt64Atomics feature is not enabled, Image objects created with the IMAGE_CREATE_SPARSE_RESIDENCY_BIT flag must not be accessed by atomic instructions through an OpTypeImage with a SampledType with a Width of 64 by this command.
• If the sparseImageInt64Atomics feature is not enabled, Buffer objects created with the BUFFER_CREATE_SPARSE_RESIDENCY_BIT flag must not be accessed by atomic instructions through an OpTypeImage with a SampledType with a Width of 64 by this command.
• The current render pass must be compatible with the renderPass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• Every input attachment used by the current subpass must be bound to the pipeline via a descriptor set
• Image subresources used as attachments in the current render pass must not be accessed in any way other than as an attachment by this command, except for cases involving read-only access to depth/stencil attachments as described in the Render Pass chapter
• If the draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to PhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with PipelineSampleLocationsStateCreateInfoEXT::sampleLocationsEnable set to TRUE and the current subpass has a depth/stencil attachment, then that attachment must have been created with the IMAGE_CREATE_SAMPLE_LOCATIONS_COMPATIBLE_DEPTH_BIT_EXT bit set
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled, but not the DYNAMIC_STATE_SCISSOR_WITH_COUNT_EXT dynamic state enabled, then cmdSetViewportWithCountEXT must have been called in the current command buffer prior to this draw command, and the viewportCount parameter of cmdSetViewportWithCountEXT must match the PipelineViewportStateCreateInfo::scissorCount of the pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SCISSOR_WITH_COUNT_EXT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled, then cmdSetScissorWithCountEXT must have been called in the current command buffer prior to this draw command, and the scissorCount parameter of cmdSetScissorWithCountEXT must match the PipelineViewportStateCreateInfo::viewportCount of the pipeline
• If the bound graphics pipeline state was created with both the DYNAMIC_STATE_SCISSOR_WITH_COUNT_EXT and DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic states enabled then both cmdSetViewportWithCountEXT and cmdSetScissorWithCountEXT must have been called in the current command buffer prior to this draw command, and the viewportCount parameter of cmdSetViewportWithCountEXT must match the scissorCount parameter of cmdSetScissorWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportWScalingStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT and DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportWScalingNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportShadingRateImageStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT and DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportShadingRatePaletteNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled and an instance of PipelineViewportSwizzleStateCreateInfoNV chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportSwizzleStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled and an instance of PipelineViewportExclusiveScissorStateCreateInfoNV chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportExclusiveScissorStateCreateInfoNV::exclusiveScissorCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCountEXT
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_PRIMITIVE_TOPOLOGY_EXT dynamic state enabled then cmdSetPrimitiveTopologyEXT must have been called in the current command buffer prior to this draw command, and the primitiveTopology parameter of cmdSetPrimitiveTopologyEXT must be of the same topology class as the pipeline PipelineInputAssemblyStateCreateInfo::topology state
• If the primitiveFragmentShadingRateWithMultipleViewports limit is not supported, the bound graphics pipeline was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled, and any of the shader stages of the bound graphics pipeline write to the PrimitiveShadingRateKHR built-in, then cmdSetViewportWithCountEXT must have been called in the current command buffer prior to this draw command, and the viewportCount parameter of cmdSetViewportWithCountEXT must be 1
• All vertex input bindings accessed via vertex input variables declared in the vertex shader entry point’s interface must have either valid or NULL_HANDLE buffers bound
• If the nullDescriptor feature is not enabled, all vertex input bindings accessed via vertex input variables declared in the vertex shader entry point’s interface must not be NULL_HANDLE
• For a given vertex buffer binding, any attribute data fetched must be entirely contained within the corresponding vertex buffer binding, as described in ???
• PhysicalDeviceTransformFeedbackFeaturesEXT::transformFeedback must be enabled
• The implementation must support PhysicalDeviceTransformFeedbackPropertiesEXT::transformFeedbackDraw
• vertexStride must be greater than 0 and less than or equal to PhysicalDeviceLimits::maxTransformFeedbackBufferDataStride
• If counterBuffer is non-sparse then it must be bound completely and contiguously to a single DeviceMemory object
• counterBuffer must have been created with the BUFFER_USAGE_INDIRECT_BUFFER_BIT bit set
• counterBufferOffset must be a multiple of 4
• commandBuffer must not be a protected command buffer

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• counterBuffer must be a valid Buffer handle
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• Both of commandBuffer, and counterBuffer must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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See Also

Buffer, CommandBuffer, DeviceSize

VkPhysicalDeviceTransformFeedbackFeaturesEXT - Structure describing transform feedback features that can be supported by an implementation

Members

The members of the PhysicalDeviceTransformFeedbackFeaturesEXT structure describe the following features:

Description

If the PhysicalDeviceTransformFeedbackFeaturesEXT structure is included in the pNext chain of PhysicalDeviceFeatures2, it is filled with values indicating whether each feature is supported. PhysicalDeviceTransformFeedbackFeaturesEXT can also be included in the pNext chain of DeviceCreateInfo to enable features.

Valid Usage (Implicit)

See Also

Bool32, StructureType

VkPhysicalDeviceTransformFeedbackPropertiesEXT - Structure describing transform feedback properties that can be supported by an implementation

Members

The members of the PhysicalDeviceTransformFeedbackPropertiesEXT structure describe the following implementation-dependent limits:

Description

If the PhysicalDeviceTransformFeedbackPropertiesEXT structure is included in the pNext chain of PhysicalDeviceProperties2, it is filled with the implementation-dependent limits and properties.

Valid Usage (Implicit)

See Also

Bool32, DeviceSize, StructureType

VkPipelineRasterizationStateStreamCreateInfoEXT - Structure defining the geometry stream used for rasterization

Description

If this structure is not present, rasterizationStream is assumed to be zero.

Valid Usage (Implicit)

See Also

PipelineRasterizationStateStreamCreateFlagsEXT, StructureType

VkPipelineRasterizationStateStreamCreateFlagsEXT - Reserved for future use

Description

PipelineRasterizationStateStreamCreateFlagsEXT is a bitmask type for setting a mask, but is currently reserved for future use.

See Also

PipelineRasterizationStateStreamCreateInfoEXT