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# D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_DESC

> Description of the post-build information to generate from an acceleration structure. Use this structure in calls to.

Description of the post-build information to generate from an acceleration structure.  Use this structure in calls to [EmitRaytracingAccelerationStructurePostbuildInfo](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist4/methods/id3d12graphicscommandlist4_emitraytracingaccelerationstructurepostbuildinfo_public) and  [BuildRaytracingAccelerationStructure](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist4/methods/id3d12graphicscommandlist4_buildraytracingaccelerationstructure_public).

## Syntax

```cpp theme={null}
typedef struct D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_DESC
{
    D3D12_GPU_VIRTUAL_ADDRESS DestBuffer;
    D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_TYPE InfoType;
} D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_DESC
```

### Members

*DestBuffer*\
Type: D3D12\_GPU\_VIRTUAL\_ADDRESS

Storage for the post-build info result.  Size required and the layout of the contents written by the system depend on the value of the <i>InfoType</i> field.

The memory pointed to must be in state [D3D12\_RESOURCE\_STATE\_UNORDERED\_ACCESS](/reference/graphics/d3d12_x/enums/d3d12_resource_states).  The memory must be aligned to the natural alignment for the members of the particular output structure being generated (e.g. 8 bytes for a struct with the largest members being UINT64).

*InfoType*\
Type: D3D12\_RAYTRACING\_ACCELERATION\_STRUCTURE\_POSTBUILD\_INFO\_TYPE

A [D3D12\_RAYTRACING\_ACCELERATION\_STRUCTURE\_POSTBUILD\_INFO\_TYPE](/reference/graphics/d3d12/enums/d3d12_raytracing_acceleration_structure_postbuild_info_type_public) value specifying the type of post-build information to retrieve.

## Requirements

**Header:** d3d12\_xs.h\
**Library:** d3d12\_xs.lib\
**Supported Platforms**: XBOX Series consoles


## Related topics

- [EmitRaytracingAccelerationStructurePostbuildInfo](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist4/methods/id3d12graphicscommandlist4_emitraytracingaccelerationstructurepostbuildinfo_public.md)
- [BuildRaytracingAccelerationStructure (XBOX Series consoles)](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist4/methods/id3d12graphicscommandlist4_buildraytracingaccelerationstructure_public.md)
- [D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_SERIALIZATION_DESC (XBOX Series consoles)](/reference/graphics/d3d12/structs/d3d12_raytracing_acceleration_structure_postbuild_info_serialization_desc_public.md)
- [D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_CURRENT_SIZE_DESC (XBOX Series consoles)](/reference/graphics/d3d12/structs/d3d12_raytracing_acceleration_structure_postbuild_info_current_size_desc_public.md)
- [D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC (XBOX Series consoles)](/reference/graphics/d3d12/structs/d3d12_raytracing_acceleration_structure_postbuild_info_compacted_size_desc_public.md)