// d3d12umddi.h

typedef struct D3D12DDI_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS_0054 {
  D3D12DDI_RAYTRACING_ACCELERATION_STRUCTURE_TYPE        Type;
  D3D12DDI_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS Flags;
  UINT                                                   NumDescs;
  D3D12DDI_ELEMENTS_LAYOUT                               DescsLayout;
  union {
    D3D12DDI_GPU_VIRTUAL_ADDRESS                 InstanceDescs;
    const D3D12DDI_RAYTRACING_GEOMETRY_DESC_0054 *pGeometryDescs;
    const D3D12DDI_RAYTRACING_GEOMETRY_DESC_0054 const * * ppGeometryDescs;
  };
} D3D12DDI_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS_0054;
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Windows Driver Kit DDI reference (ns-d3d12umddi-d3d12ddi_build_raytracing_acceleration_structure_inputs_0054)

D3D12DDI_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS_0054 structure

Description

Build inputs for the PFND3D12DDI_GET_RAYTRACING_ACCELERATION_STRUCTURE_PREBUILD_INFO_0054 callback function.

Members

`Type`

A D3D12DDI_RAYTRACING_ACCELERATION_STRUCTURE_TYPE enumeration that specifies the type of ray tracing acceleration structure to build.

`Flags`

A D3D12DDI_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS flag that specifies the build options.

`NumDescs`

The acceleration structure update count.

`DescsLayout`

A D3D12DDI_ELEMENTS_LAYOUT that defines the geometry ordering in a bottom-level acceleration structure.

`InstanceDescs`

A D3D12DDI_GPU_VIRTUAL_ADDRESS that defines the instance order in a top-level acceleration structure.

`pGeometryDescs`

Pointer to a D3D12DDI_RAYTRACING_GEOMETRY_DESC_0054 that defines the geometry description.

`ppGeometryDescs`

Pointer to the D3D12DDI_RAYTRACING_GEOMETRY_DESC_0054 pointer.

D3D12DDI_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS_0054 - NtDoc