# VkBuildPartitionedAccelerationStructureIndirectCommandNV(3) Manual Page

## Name

VkBuildPartitionedAccelerationStructureIndirectCommandNV - Structure describing PTLAS operation to perform

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## C Specification

The VkBuildPartitionedAccelerationStructureIndirectCommandNV structure is defined as:

    // Provided by VK_NV_partitioned_acceleration_structure
    typedef struct VkBuildPartitionedAccelerationStructureIndirectCommandNV {
        VkPartitionedAccelerationStructureOpTypeNV    opType;
        uint32_t                                      argCount;
        VkStridedDeviceAddressNV                      argData;
    } VkBuildPartitionedAccelerationStructureIndirectCommandNV;

## Members

- `opType` is a VkPartitionedAccelerationStructureOpTypeNV describing the type of operation.

- `argCount` the number of structures in `argData` array.

- `argData` is an array of VkStridedDeviceAddressNV structures containing the write or update data for instances and partitions in the PTLAS. The structure is dependent on `opType` as shown in the table below.

`opType` | Format of `argData`
`VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_INSTANCE_NV` | VkPartitionedAccelerationStructureWriteInstanceDataNV
`VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_UPDATE_INSTANCE_NV` | VkPartitionedAccelerationStructureUpdateInstanceDataNV
`VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_PARTITION_TRANSLATION_NV` | VkPartitionedAccelerationStructureWritePartitionTranslationDataNV

## Description

Valid Usage

- VUID-VkBuildPartitionedAccelerationStructureIndirectCommandNV-argData-10565
  An instance index must not be referenced by more than one structure in `argData`

Valid Usage (Implicit)

- VUID-VkBuildPartitionedAccelerationStructureIndirectCommandNV-opType-parameter
  `opType` must be a valid VkPartitionedAccelerationStructureOpTypeNV value

## See Also

VK_NV_partitioned_acceleration_structure, VkPartitionedAccelerationStructureOpTypeNV, VkStridedDeviceAddressNV

## 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0