# VkAccelerationStructureMemoryRequirementsInfoNV(3) Manual Page

## Name

VkAccelerationStructureMemoryRequirementsInfoNV - Structure specifying acceleration to query for memory requirements

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## C Specification

The `VkAccelerationStructureMemoryRequirementsInfoNV` structure is defined as:

    // Provided by VK_NV_ray_tracing
    typedef struct VkAccelerationStructureMemoryRequirementsInfoNV {
        VkStructureType                                    sType;
        const void*                                        pNext;
        VkAccelerationStructureMemoryRequirementsTypeNV    type;
        VkAccelerationStructureNV                          accelerationStructure;
    } VkAccelerationStructureMemoryRequirementsInfoNV;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `type` selects the type of memory requirement being queried. `VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_OBJECT_NV` returns the memory requirements for the object itself. `VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_BUILD_SCRATCH_NV` returns the memory requirements for the scratch memory when doing a build. `VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_UPDATE_SCRATCH_NV` returns the memory requirements for the scratch memory when doing an update.

- `accelerationStructure` is the acceleration structure to be queried for memory requirements.

## Description

Valid Usage (Implicit)

- VUID-VkAccelerationStructureMemoryRequirementsInfoNV-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_INFO_NV`

- VUID-VkAccelerationStructureMemoryRequirementsInfoNV-pNext-pNext
  `pNext` must be `NULL`

- VUID-VkAccelerationStructureMemoryRequirementsInfoNV-type-parameter
  `type` must be a valid VkAccelerationStructureMemoryRequirementsTypeNV value

- VUID-VkAccelerationStructureMemoryRequirementsInfoNV-accelerationStructure-parameter
  `accelerationStructure` must be a valid VkAccelerationStructureNV handle

## See Also

VK_NV_ray_tracing, VkAccelerationStructureMemoryRequirementsTypeNV, VkAccelerationStructureNV, VkStructureType, vkGetAccelerationStructureMemoryRequirementsNV

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0