# VkPartitionedAccelerationStructureOpTypeNV(3) Manual Page

## Name

VkPartitionedAccelerationStructureOpTypeNV - Enum providing the type of PTLAS operation to perform

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## C Specification

Values which can be set in VkPartitionedAccelerationStructureOpTypeNV are:

    // Provided by VK_NV_partitioned_acceleration_structure
    typedef enum VkPartitionedAccelerationStructureOpTypeNV {
        VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_INSTANCE_NV = 0,
        VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_UPDATE_INSTANCE_NV = 1,
        VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_PARTITION_TRANSLATION_NV = 2,
    } VkPartitionedAccelerationStructureOpTypeNV;

## Description

- `VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_INSTANCE_NV` is used to assign a transformed bottom level acceleration structure to an instance and partition. This is similar to VkAccelerationStructureInstanceKHR that defines the properties and transformations for a single instance in non-partitioned TLAS. Any partition that contains at least one of the affected instances will have their internal acceleration structure rebuilt.

- `VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_UPDATE_INSTANCE_NV` specifies that an instance will be updated with a new bottom level acceleration structure.

- `VK_PARTITIONED_ACCELERATION_STRUCTURE_OP_TYPE_WRITE_PARTITION_TRANSLATION_NV` specifies that a partition will be assigned a translation vector.

## See Also

VK_NV_partitioned_acceleration_structure, VkBuildPartitionedAccelerationStructureIndirectCommandNV

## 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