vkCmdBuildAccelerationStructuresIndirectKHR(3)

# vkCmdBuildAccelerationStructuresIndirectKHR(3) Manual Page

## Name

vkCmdBuildAccelerationStructuresIndirectKHR - Build an acceleration structure with some parameters provided on the device

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## C Specification

To build acceleration structures with some parameters sourced on the device call:

    // Provided by VK_KHR_acceleration_structure
    void vkCmdBuildAccelerationStructuresIndirectKHR(
        VkCommandBuffer                             commandBuffer,
        uint32_t                                    infoCount,
        const VkAccelerationStructureBuildGeometryInfoKHR* pInfos,
        const VkDeviceAddress*                      pIndirectDeviceAddresses,
        const uint32_t*                             pIndirectStrides,
        const uint32_t* const*                      ppMaxPrimitiveCounts);

## Parameters

- `commandBuffer` is the command buffer into which the command will be recorded.

- `infoCount` is the number of acceleration structures to build.

- `pInfos` is an array of `infoCount` VkAccelerationStructureBuildGeometryInfoKHR structures defining the geometry used to build each acceleration structure.

- `pIndirectDeviceAddresses` is an array of `infoCount` buffer device addresses which point to `pInfos`[i]→`geometryCount` VkAccelerationStructureBuildRangeInfoKHR structures defining dynamic offsets to the addresses where geometry data is stored, as defined by `pInfos`[i].

- `pIndirectStrides` is an array of `infoCount` byte strides between elements of `pIndirectDeviceAddresses`.

- `ppMaxPrimitiveCounts` is an array of `infoCount` arrays of `pInfo`[i]→`geometryCount` values indicating the maximum number of primitives that will be built by this command for each geometry.

## Description

Accesses to acceleration structures, scratch buffers, vertex buffers, index buffers, and instance buffers must be synchronized as with vkCmdBuildAccelerationStructuresKHR.

Accesses to any element of `pIndirectDeviceAddresses` must be synchronized with the `VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR` pipeline stage and an access type of `VK_ACCESS_INDIRECT_COMMAND_READ_BIT`.

Valid Usage

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-mode-04628
  The `mode` member of each element of `pInfos` must be a valid VkBuildAccelerationStructureModeKHR value

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-srcAccelerationStructure-04629
  If the `srcAccelerationStructure` member of any element of `pInfos` is not VK_NULL_HANDLE, the `srcAccelerationStructure` member must be a valid VkAccelerationStructureKHR handle

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-04630
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `srcAccelerationStructure` member must not be VK_NULL_HANDLE

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03403
  The `srcAccelerationStructure` member of any element of `pInfos` must not be the same acceleration structure as the `dstAccelerationStructure` member of any other element of `pInfos`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03698
  The `dstAccelerationStructure` member of any element of `pInfos` must not be the same acceleration structure as the `dstAccelerationStructure` member of any other element of `pInfos`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03800
  The `dstAccelerationStructure` member of any element of `pInfos` must be a valid VkAccelerationStructureKHR handle

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03699
  For each element of `pInfos`, if its `type` member is `VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR`, its `dstAccelerationStructure` member must have been created with a value of VkAccelerationStructureCreateInfoKHR::`type` equal to either `VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR` or `VK_ACCELERATION_STRUCTURE_TYPE_GENERIC_KHR`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03700
  For each element of `pInfos`, if its `type` member is `VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR`, its `dstAccelerationStructure` member must have been created with a value of VkAccelerationStructureCreateInfoKHR::`type` equal to either `VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR` or `VK_ACCELERATION_STRUCTURE_TYPE_GENERIC_KHR`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03663
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, inactive primitives in its `srcAccelerationStructure` member must not be made active

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03664
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, active primitives in its `srcAccelerationStructure` member must not be made inactive

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-None-03407
  The `dstAccelerationStructure` member of any element of `pInfos` must not be referenced by the `geometry.instances.data` member of any element of `pGeometries` or `ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR` in any other element of `pInfos`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03701
  The range of memory backing the `dstAccelerationStructure` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing the `srcAccelerationStructure` member of any other element of `pInfos` with a `mode` equal to `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03702
  The range of memory backing the `dstAccelerationStructure` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing the `dstAccelerationStructure` member of any other element of `pInfos`, which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03703
  The range of memory backing the `dstAccelerationStructure` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing the `scratchData` member of any element of `pInfos` (including the same element), which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-scratchData-03704
  The range of memory backing the `scratchData` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing the `scratchData` member of any other element of `pInfos`, which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-scratchData-03705
  The range of memory backing the `scratchData` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing the `srcAccelerationStructure` member of any element of `pInfos` with a `mode` equal to `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR` (including the same element), which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-dstAccelerationStructure-03706
  The range of memory backing the `dstAccelerationStructure` member of any element of `pInfos` that is accessed by this command must not overlap the memory backing any acceleration structure referenced by the `geometry.instances.data` member of any element of `pGeometries` or `ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR` in any other element of `pInfos`, which is accessed by this command

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03666
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `srcAccelerationStructure` member must not be VK_NULL_HANDLE

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03667
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `srcAccelerationStructure` member must have been built before with `VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_UPDATE_BIT_KHR` set in VkAccelerationStructureBuildGeometryInfoKHR::`flags`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03668
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `srcAccelerationStructure` and `dstAccelerationStructure` members must either be the same VkAccelerationStructureKHR, or not have any memory aliasing

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03758
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `geometryCount` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03759
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `flags` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03760
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, its `type` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03761
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, its `geometryType` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03762
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, its `flags` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03763
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, its `geometry.triangles.vertexFormat` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03764
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, its `geometry.triangles.maxVertex` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03765
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, its `geometry.triangles.indexType` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03766
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if its `geometry.triangles.transformData` member was NULL when `srcAccelerationStructure` was last built, then it must be NULL.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03767
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if its `geometry.triangles.transformData` member was not NULL when `srcAccelerationStructure` was last built, then it may not be NULL.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03768
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, then for each `VkAccelerationStructureGeometryKHR` structure referred to by its `pGeometries` or `ppGeometries` members, if `geometryType` is `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, and `geometry.triangles.indexType` is not `VK_INDEX_TYPE_NONE_KHR`, then the value of each index referenced index must be the same as the corresponding index value when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-primitiveCount-03769
  For each `VkAccelerationStructureBuildRangeInfoKHR` referenced by this command, its `primitiveCount` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-firstVertex-03770
  For each `VkAccelerationStructureBuildRangeInfoKHR` referenced by this command, if the corresponding geometry uses indices, its `firstVertex` member must have the same value which was specified when `srcAccelerationStructure` was last built.

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03801
  For each element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, the corresponding `ppMaxPrimitiveCounts`[i][j] must be less than or equal to VkPhysicalDeviceAccelerationStructurePropertiesKHR::`maxInstanceCount`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03707
  For each element of `pInfos`, the `buffer` used to create its `dstAccelerationStructure` member must be bound to device memory

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03708
  For each element of `pInfos`, if its `mode` member is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR` the `buffer` used to create its `srcAccelerationStructure` member must be bound to device memory

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03709
  For each element of `pInfos`, the `buffer` used to create each acceleration structure referenced by the `geometry.instances.data` member of any element of `pGeometries` or `ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR` must be bound to device memory

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03671
  If `pInfos`[i].`mode` is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR`, all addresses between `pInfos`[i].`scratchData.deviceAddress` and `pInfos`[i].`scratchData.deviceAddress` + N - 1 must be in the buffer device address range of the same buffer, where N is given by the `buildScratchSize` member of the VkAccelerationStructureBuildSizesInfoKHR structure returned from a call to vkGetAccelerationStructureBuildSizesKHR with an identical VkAccelerationStructureBuildGeometryInfoKHR structure and primitive count

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03672
  If `pInfos`[i].`mode` is `VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR`, all addresses between `pInfos`[i].`scratchData.deviceAddress` and `pInfos`[i].`scratchData.deviceAddress` + N - 1 must be in the buffer device address range of the same buffer, where N is given by the `updateScratchSize` member of the VkAccelerationStructureBuildSizesInfoKHR structure returned from a call to vkGetAccelerationStructureBuildSizesKHR with an identical VkAccelerationStructureBuildGeometryInfoKHR structure and primitive count

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-geometry-03673
  The buffers from which the buffer device addresses for all of the `geometry.triangles.vertexData`, `geometry.triangles.indexData`, `geometry.triangles.transformData`, `geometry.aabbs.data`, and `geometry.instances.data` members of all `pInfos`[i].`pGeometries` and `pInfos`[i].`ppGeometries` must have been created with the `VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR` usage flag

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03674
  The buffer from which the buffer device address `pInfos`[i].`scratchData.deviceAddress` is queried must have been created with `VK_BUFFER_USAGE_STORAGE_BUFFER_BIT` usage flag

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03802
  For each element of `pInfos`, its `scratchData.deviceAddress` member must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03803
  For each element of `pInfos`, if `scratchData.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03710
  For each element of `pInfos`, its `scratchData.deviceAddress` member must be a multiple of VkPhysicalDeviceAccelerationStructurePropertiesKHR::`minAccelerationStructureScratchOffsetAlignment`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03804
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, `geometry.triangles.vertexData.deviceAddress` must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03805
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.vertexData.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03711
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, `geometry.triangles.vertexData.deviceAddress` must be aligned to the size in bytes of the smallest component of the format in `vertexFormat`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03806
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.indexType` is not `VK_INDEX_TYPE_NONE_KHR`, `geometry.triangles.indexData.deviceAddress` must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03807
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.indexType` is not `VK_INDEX_TYPE_NONE_KHR`, if `geometry.triangles.indexData.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03712
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, and with `geometry.triangles.indexType` not equal to `VK_INDEX_TYPE_NONE_KHR`, `geometry.triangles.indexData.deviceAddress` must be aligned to the size in bytes of the type in `indexType`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03808
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.transformData.deviceAddress` is not `0`, it must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03809
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.transformData.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03810
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR`, if `geometry.triangles.transformData.deviceAddress` is not `0`, it must be aligned to `16` bytes

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03811
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_AABBS_KHR`, `geometry.aabbs.data.deviceAddress` must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03812
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_AABBS_KHR`, if `geometry.aabbs.data.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03714
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_AABBS_KHR`, `geometry.aabbs.data.deviceAddress` must be aligned to `8` bytes

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03715
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, if `geometry.arrayOfPointers` is `VK_FALSE`, `geometry.instances.data.deviceAddress` must be aligned to `16` bytes

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03716
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, if `geometry.arrayOfPointers` is `VK_TRUE`, `geometry.instances.data.deviceAddress` must be aligned to `8` bytes

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03717
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, if `geometry.arrayOfPointers` is `VK_TRUE`, each element of `geometry.instances.data.deviceAddress` in device memory must be aligned to `16` bytes

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03813
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, `geometry.instances.data.deviceAddress` must be a valid device address obtained from vkGetBufferDeviceAddress

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03814
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, if `geometry.instances.data.deviceAddress` is the address of a non-sparse buffer then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03815
  For any element of `pInfos`[i].`pGeometries` or `pInfos`[i].`ppGeometries` with a `geometryType` of `VK_GEOMETRY_TYPE_INSTANCES_KHR`, each VkAccelerationStructureInstanceKHR::`accelerationStructureReference` value in `geometry.instances.data.deviceAddress` must be a valid device address containing a value obtained from vkGetAccelerationStructureDeviceAddressKHR

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-03645
  For any element of `pIndirectDeviceAddresses`, if the buffer from which it was queried is non-sparse then it must be bound completely and contiguously to a single VkDeviceMemory object

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-03646
  For any element of `pIndirectDeviceAddresses`[i], all device addresses between `pIndirectDeviceAddresses`[i] and `pIndirectDeviceAddresses`[i] + (`pInfos`[i]→geometryCount × `pIndirectStrides`[i]) - 1 must be in the buffer device address range of the same buffer

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-03647
  For any element of `pIndirectDeviceAddresses`, the buffer from which it was queried must have been created with the `VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT` bit set

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-03648
  Each element of `pIndirectDeviceAddresses` must be a multiple of `4`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectStrides-03787
  Each element of `pIndirectStrides` must be a multiple of `4`

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-commandBuffer-03649
  `commandBuffer` must not be a protected command buffer

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-accelerationStructureIndirectBuild-03650
  The `VkPhysicalDeviceAccelerationStructureFeaturesKHR`::`accelerationStructureIndirectBuild` feature must be enabled

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-03651
  Each VkAccelerationStructureBuildRangeInfoKHR structure referenced by any element of `pIndirectDeviceAddresses` must be a valid VkAccelerationStructureBuildRangeInfoKHR structure

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-03652
  `pInfos`[i].`dstAccelerationStructure` must have been created with a value of VkAccelerationStructureCreateInfoKHR::`size` greater than or equal to the memory size required by the build operation, as returned by vkGetAccelerationStructureBuildSizesKHR with `pBuildInfo` = `pInfos`[i] and `pMaxPrimitiveCounts` = `ppMaxPrimitiveCounts`[i]

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-ppMaxPrimitiveCounts-03653
  Each `ppMaxPrimitiveCounts`[i][j] must be greater than or equal to the the `primitiveCount` value specified by the VkAccelerationStructureBuildRangeInfoKHR structure located at `pIndirectDeviceAddresses`[i] + (`j` × `pIndirectStrides`[i])

Valid Usage (Implicit)

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pInfos-parameter
  `pInfos` must be a valid pointer to an array of `infoCount` valid VkAccelerationStructureBuildGeometryInfoKHR structures

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectDeviceAddresses-parameter
  `pIndirectDeviceAddresses` must be a valid pointer to an array of `infoCount` `VkDeviceAddress` values

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-pIndirectStrides-parameter
  `pIndirectStrides` must be a valid pointer to an array of `infoCount` `uint32_t` values

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-ppMaxPrimitiveCounts-parameter
  `ppMaxPrimitiveCounts` must be a valid pointer to an array of `infoCount` `uint32_t` values

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support compute operations

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-renderpass
  This command must only be called outside of a render pass instance

- VUID-vkCmdBuildAccelerationStructuresIndirectKHR-infoCount-arraylength
  `infoCount` must be greater than `0`

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Supported Queue Types | Pipeline Type
--- | --- | --- | ---
Primary Secondary | Outside | Compute |

## See Also

VkAccelerationStructureBuildGeometryInfoKHR, VkCommandBuffer, `VkDeviceAddress`

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright (c) 2014-2020 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0