# VkAccelerationStructureCreateInfoNV(3) Manual Page

## Name

VkAccelerationStructureCreateInfoNV - Structure specifying the parameters of a newly created acceleration structure object

## C Specification

The `VkAccelerationStructureCreateInfoNV` structure is defined as:

    typedef struct VkAccelerationStructureCreateInfoNV {
        VkStructureType                  sType;
        const void*                      pNext;
        VkDeviceSize                     compactedSize;
        VkAccelerationStructureInfoNV    info;
    } VkAccelerationStructureCreateInfoNV;

## Members

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to an extension-specific structure.

- `compactedSize` is the size from the result of vkCmdWriteAccelerationStructuresPropertiesNV if this acceleration structure is going to be the target of a compacting copy.

- `info` is the VkAccelerationStructureInfoNV structure specifying further parameters of the created acceleration structure.

## Description

Valid Usage

- If `compactedSize` is not `0` then both `info.geometryCount` and `info.instanceCount` must be `0`

Valid Usage (Implicit)

- `sType` must be `VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_CREATE_INFO_NV`

- `pNext` must be `NULL`

- `info` must be a valid VkAccelerationStructureInfoNV structure

## See Also

VkAccelerationStructureInfoNV, `VkDeviceSize`, VkStructureType, vkCreateAccelerationStructureNV

## 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 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.