Diligent::BLASBuildBoundingBoxData Struct Reference

AABB geometry data description. More...

#include <DeviceContext.h>

Public Attributes
const Char *	GeometryName = nullptr
	Geometry name used to map geometry to hit group in shader binding table.
IBuffer *	pBoxBuffer = nullptr
	AABB data source.
Uint64	BoxOffset = 0
	Data offset in bytes in pBoxBuffer.
Uint32	BoxStride = 0
	Stride in bytes between each AABB.
Uint32	BoxCount = 0
	Number of AABBs.
RAYTRACING_GEOMETRY_FLAGS	Flags = RAYTRACING_GEOMETRY_FLAG_NONE
	Geometry flags, see Diligent::RAYTRACING_GEOMETRY_FLAGS.

Detailed Description

AABB geometry data description.

Member Data Documentation

BoxCount

Uint32 Diligent::BLASBuildBoundingBoxData::BoxCount = 0

Number of AABBs.

Must be less than or equal to BLASBoundingBoxDesc::MaxBoxCount.

BoxOffset

Uint64 Diligent::BLASBuildBoundingBoxData::BoxOffset = 0

Data offset in bytes in pBoxBuffer.

• D3D12 and Vulkan: offset must be aligned by RayTracingProperties::BoxBufferAlignment.
• Metal: offset must be aligned by RayTracingProperties::BoxBufferAlignment and must be a multiple of the BoxStride.

BoxStride

Uint32 Diligent::BLASBuildBoundingBoxData::BoxStride = 0

Stride in bytes between each AABB.

Stride must be aligned by RayTracingProperties::BoxBufferAlignment.

GeometryName

const Char* Diligent::BLASBuildBoundingBoxData::GeometryName = nullptr

Geometry name used to map geometry to hit group in shader binding table.

Put geometry data to geometry that allocated by BLASBoundingBoxDesc with the same name.

pBoxBuffer

IBuffer* Diligent::BLASBuildBoundingBoxData::pBoxBuffer = nullptr

AABB data source.

Each AABB is defined as { float3 Min; float3 Max } structure.

An AABB are considered inactive if AABB.Min.x is NaN.

The buffer must be created with Diligent::BIND_RAY_TRACING flag.