D3D12_RAYTRACING_GEOMETRY_AABBS_DESC structure (d3d12.h)

Describes a set of Axis-aligned bounding boxes that are used in the D3D12_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_INPUTS structure to provide input data to a raytracing acceleration structure build operation.

Syntax

typedef struct D3D12_RAYTRACING_GEOMETRY_AABBS_DESC {
  UINT64                               AABBCount;
  D3D12_GPU_VIRTUAL_ADDRESS_AND_STRIDE AABBs;
} D3D12_RAYTRACING_GEOMETRY_AABBS_DESC;

Members

AABBCount

The number of AABBs pointed to in the contiguous array at AABBs.

AABBs

the GPU memory location where an array of AABB descriptions is to be found, including the data stride between AABBs. The address and stride must each be aligned to 8 bytes, defined as The address must be aligned to 16 bytes, defined as D3D12_RAYTRACING_AABB_BYTE_ALIGNMENT. The stride can be 0.

Requirements

Requirement	Value
Header	d3d12.h