Bottom-level AS description. More...

#include <BottomLevelAS.h>

Inheritance diagram for Diligent::BottomLevelASDesc:

Public Member Functions
bool	operator== (const BottomLevelASDesc &rhs) const
	Tests if two BLAS descriptions are equal.

Public Attributes
const BLASTriangleDesc *	pTriangles = nullptr
	Array of triangle geometry descriptions.

Uint32	TriangleCount = 0
	The number of triangle geometries in pTriangles array.

const BLASBoundingBoxDesc *	pBoxes = nullptr
	Array of AABB geometry descriptions.

Uint32	BoxCount = 0
	The number of AABB geometries in pBoxes array.

RAYTRACING_BUILD_AS_FLAGS	Flags = RAYTRACING_BUILD_AS_NONE
	Ray tracing build flags, see Diligent::RAYTRACING_BUILD_AS_FLAGS.

Uint64	CompactedSize = 0

Uint64	ImmediateContextMask = 1
	Defines which immediate contexts are allowed to execute commands that use this BLAS.

Public Attributes inherited from Diligent::DeviceObjectAttribs
const Char *	Name = nullptr
	Object name.

Detailed Description

Bottom-level AS description.

Member Function Documentation

◆ operator==()

bool Diligent::BottomLevelASDesc::operator== ( const BottomLevelASDesc & rhs ) const

inline

Tests if two BLAS descriptions are equal.

Parameters

[in] RHS - reference to the structure to compare with.

Returns: true if all members of the two structures except for the Name are equal, and false otherwise.

Note: The operator ignores the Name field as it is used for debug purposes and doesn't affect the BLAS properties.

Member Data Documentation

◆ CompactedSize

Uint64 Diligent::BottomLevelASDesc::CompactedSize = 0

Size from the result of IDeviceContext::WriteBLASCompactedSize() if this acceleration structure is going to be the target of a compacting copy (IDeviceContext::CopyBLAS() with COPY_AS_MODE_COMPACT).

◆ ImmediateContextMask

Uint64 Diligent::BottomLevelASDesc::ImmediateContextMask = 1

Defines which immediate contexts are allowed to execute commands that use this BLAS.

When ImmediateContextMask contains a bit at position n, the acceleration structure may be used in the immediate context with index n directly (see DeviceContextDesc::ContextId). It may also be used in a command list recorded by a deferred context that will be executed through that immediate context.

Remarks: Only specify these bits that will indicate those immediate contexts where the BLAS will actually be used. Do not set unnecessary bits as this will result in extra overhead.