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UID title description helpviewer_keywords old-location tech.root ms.assetid ms.date ms.keywords req.header req.include-header req.target-type req.target-min-winverclnt req.target-min-winversvr req.kmdf-ver req.umdf-ver req.ddi-compliance req.unicode-ansi req.idl req.max-support req.namespace req.assembly req.type-library req.lib req.dll req.irql targetos req.typenames req.redist ms.custom f1_keywords dev_langs topic_type api_type api_location api_name
NS:d3d12.D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC (d3d12.h)
Describes the space requirement for acceleration structure after compaction.
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC structure
PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC structure pointer
d3d12/D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
d3d12/PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
direct3d12.d3d12_raytracing_acceleration_structure_postbuild_info_compacted_size_desc
direct3d12\d3d12_raytracing_acceleration_structure_postbuild_info_compacted_size_desc.htm
direct3d12
449E95FF-99F6-467C-B5ED-3E7F4F4DF69B
12/05/2018
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC, D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC structure, PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC, PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC structure pointer, d3d12/D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC, d3d12/PD3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC, direct3d12.d3d12_raytracing_acceleration_structure_postbuild_info_compacted_size_desc
d3d12.h
Windows
Windows
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
19H1
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
d3d12/D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC
c++
APIRef
kbSyntax
HeaderDef
D3D12.h
D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC

D3D12_RAYTRACING_ACCELERATION_STRUCTURE_POSTBUILD_INFO_COMPACTED_SIZE_DESC structure

-description

Describes the space requirement for acceleration structure after compaction.

-struct-fields

-field CompactedSizeInBytes

The space requirement for acceleration structure after compaction.

It is guaranteed that a compacted acceleration structure doesn’t consume more space than a non-compacted acceleration structure.

Pre-compaction, it is guaranteed that the size requirements reported by GetRaytracingAccelerationStructurePrebuildInfo for a given build configuration (triangle counts etc.) will be sufficient to store any acceleration structure whose build inputs are reduced (e.g. reducing triangle counts). This non-increasing property for smaller builds does not apply post-compaction, however. In other words, it is not guaranteed that having fewer items in an acceleration structure means it compresses to a smaller size than compressing an acceleration structure with more items.