Diligent::BLASBuildTriangleData Struct Reference

Triangle geometry data description. More...

#include <DeviceContext.h>

Public Attributes
const Char *	GeometryName = nullptr
	Geometry name used to map a geometry to a hit group in the shader binding table.
IBuffer *	pVertexBuffer = nullptr
	Triangle vertices data source.
Uint64	VertexOffset = 0
	Data offset, in bytes, in pVertexBuffer.
Uint32	VertexStride = 0
	Stride, in bytes, between vertices.
Uint32	VertexCount = 0
	The number of triangle vertices.
VALUE_TYPE	VertexValueType = VT_UNDEFINED
	The type of the vertex components.
Uint8	VertexComponentCount = 0
	The number of vertex components.
Uint32	PrimitiveCount = 0
	The number of triangles.
IBuffer *	pIndexBuffer = nullptr
	Triangle indices data source.
Uint64	IndexOffset = 0
	Data offset in bytes in pIndexBuffer.
VALUE_TYPE	IndexType = VT_UNDEFINED
	The type of triangle indices, see Diligent::VALUE_TYPE.
IBuffer *	pTransformBuffer = nullptr
	Geometry transformation data source, must contain a float4x3 matrix aka Diligent::InstanceMatrix.
Uint64	TransformBufferOffset = 0
	Data offset in bytes in pTransformBuffer.
RAYTRACING_GEOMETRY_FLAGS	Flags = RAYTRACING_GEOMETRY_FLAG_NONE
	Geometry flags, se Diligent::RAYTRACING_GEOMETRY_FLAGS.

Detailed Description

Triangle geometry data description.

Member Data Documentation

GeometryName

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

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

Add geometry data to the geometry that is allocated by BLASTriangleDesc with the same name.

IndexOffset

Uint64 Diligent::BLASBuildTriangleData::IndexOffset = 0

Data offset in bytes in pIndexBuffer.

Offset must be aligned by RayTracingProperties::IndexBufferAlignment and must be a multiple of the IndexType size.

IndexType

VALUE_TYPE Diligent::BLASBuildTriangleData::IndexType = VT_UNDEFINED

The type of triangle indices, see Diligent::VALUE_TYPE.

This is an optional value. Must be undefined or same as in BLASTriangleDesc.

pIndexBuffer

IBuffer* Diligent::BLASBuildTriangleData::pIndexBuffer = nullptr

Triangle indices data source.

Must be null if BLASTriangleDesc::IndexType is undefined. The buffer must be created with Diligent::BIND_RAY_TRACING flag.

PrimitiveCount

Uint32 Diligent::BLASBuildTriangleData::PrimitiveCount = 0

The number of triangles.

Must equal to VertexCount / 3 if pIndexBuffer is null or must be equal to index count / 3.

pTransformBuffer

IBuffer* Diligent::BLASBuildTriangleData::pTransformBuffer = nullptr

Geometry transformation data source, must contain a float4x3 matrix aka Diligent::InstanceMatrix.

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

Note

Transform buffer is not supported in Metal backend.

pVertexBuffer

IBuffer* Diligent::BLASBuildTriangleData::pVertexBuffer = nullptr

Triangle vertices data source.

Triangles are considered "inactive" if the x component of each vertex is NaN. The buffer must be created with BIND_RAY_TRACING flag.

TransformBufferOffset

Uint64 Diligent::BLASBuildTriangleData::TransformBufferOffset = 0

Data offset in bytes in pTransformBuffer.

Offset must be aligned by RayTracingProperties::TransformBufferAlignment.

VertexComponentCount

Uint8 Diligent::BLASBuildTriangleData::VertexComponentCount = 0

The number of vertex components.

This is an optional value. Must be undefined or same as in BLASTriangleDesc.

VertexCount

Uint32 Diligent::BLASBuildTriangleData::VertexCount = 0

The number of triangle vertices.

Must be less than or equal to BLASTriangleDesc::MaxVertexCount.

VertexOffset

Uint64 Diligent::BLASBuildTriangleData::VertexOffset = 0

Data offset, in bytes, in pVertexBuffer.

• D3D12 and Vulkan: offset must be a multiple of the VertexValueType size.
• Metal: stride must be aligned by RayTracingProperties::VertexBufferAlignment and must be a multiple of the VertexStride.

VertexStride

Uint32 Diligent::BLASBuildTriangleData::VertexStride = 0

Stride, in bytes, between vertices.

• D3D12 and Vulkan: stride must be a multiple of the VertexValueType size.
• Metal: stride must be aligned by RayTracingProperties::VertexBufferAlignment.

VertexValueType

VALUE_TYPE Diligent::BLASBuildTriangleData::VertexValueType = VT_UNDEFINED

The type of the vertex components.

This is an optional value. Must be undefined or same as in BLASTriangleDesc.