bvh::v2::Index< Bits, PrimCountBits > Struct Template Reference

template<size_t Bits, size_t PrimCountBits>
struct bvh::v2::Index< Bits, PrimCountBits >

Packed index data structure.

This index can either refer to a range of primitives for a BVH leaf, or to the children of a BVH node. In either case, the index corresponds to a contiguous range, which means that:

• For leaves, primitives in a BVH node should be accessed via:

  size_t begin = index.first_id(); size_t end = begin + index.prim_count(); for (size_t i = begin; i < end; ++i) { size_t prim_id = bvh.prim_ids[i]; // ... }

  Note that for efficiency, reordering the original data to avoid the indirection via bvh.prim_ids is preferable.

• For inner nodes, children should be accessed via:

  auto& left_child = bvh.nodes[index.first_id()]; auto& right_child = bvh.nodes[index.first_id() + 1];

Definition at line 33 of file index.h.

Public Types
using	Type = UnsignedIntType< Bits >

Public Member Functions
	Index ()=default
	Index (Type value)
BVH_ALWAYS_INLINE Type	first_id () const
BVH_ALWAYS_INLINE bool	is_inner () const
BVH_ALWAYS_INLINE bool	is_leaf () const
bool	operator!= (const Index &other) const
bool	operator== (const Index &other) const
BVH_ALWAYS_INLINE Type	prim_count () const
BVH_ALWAYS_INLINE void	set_first_id (size_t first_id)
BVH_ALWAYS_INLINE void	set_prim_count (size_t prim_count)

Static Public Member Functions
static BVH_ALWAYS_INLINE Index	make_inner (size_t first_child)
static BVH_ALWAYS_INLINE Index	make_leaf (size_t first_prim, size_t prim_count)

Public Attributes
Type	value

Static Public Attributes
static constexpr size_t	bits = Bits
static constexpr Type	max_first_id = make_bitmask<Type>(bits - prim_count_bits)
static constexpr Type	max_prim_count = make_bitmask<Type>(prim_count_bits)
static constexpr size_t	prim_count_bits = PrimCountBits

Private Member Functions
	Index (size_t first_id, size_t prim_count)

#include <bvh/v2/index.h>

Member Typedef Documentation

Type

template<size_t Bits, size_t PrimCountBits>

using bvh::v2::Index< Bits, PrimCountBits >::Type = UnsignedIntType<Bits>

Definition at line 34 of file index.h.

Constructor & Destructor Documentation

Index() [1/3]

template<size_t Bits, size_t PrimCountBits>

bvh::v2::Index< Bits, PrimCountBits >::Index ( )

default

Index() [2/3]

template<size_t Bits, size_t PrimCountBits>

bvh::v2::Index< Bits, PrimCountBits >::Index ( Type  value )

inlineexplicit

Definition at line 46 of file index.h.

Index() [3/3]

template<size_t Bits, size_t PrimCountBits>

bvh::v2::Index< Bits, PrimCountBits >::Index ( size_t  first_id, size_t  prim_count  )

inlineexplicitprivate

Definition at line 80 of file index.h.

Member Function Documentation

first_id()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE Type bvh::v2::Index< Bits, PrimCountBits >::first_id ( ) const

inline

Definition at line 57 of file index.h.

is_inner()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE bool bvh::v2::Index< Bits, PrimCountBits >::is_inner ( ) const

inline

Definition at line 60 of file index.h.

is_leaf()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE bool bvh::v2::Index< Bits, PrimCountBits >::is_leaf ( ) const

inline

Definition at line 59 of file index.h.

make_inner()

template<size_t Bits, size_t PrimCountBits>

static BVH_ALWAYS_INLINE Index bvh::v2::Index< Bits, PrimCountBits >::make_inner ( size_t  first_child )

inlinestatic

Definition at line 75 of file index.h.

make_leaf()

template<size_t Bits, size_t PrimCountBits>

static BVH_ALWAYS_INLINE Index bvh::v2::Index< Bits, PrimCountBits >::make_leaf ( size_t  first_prim, size_t  prim_count  )

inlinestatic

Definition at line 70 of file index.h.

operator!=()

template<size_t Bits, size_t PrimCountBits>

bool bvh::v2::Index< Bits, PrimCountBits >::operator!= ( const Index< Bits, PrimCountBits > &  other ) const

inline

Definition at line 53 of file index.h.

operator==()

template<size_t Bits, size_t PrimCountBits>

bool bvh::v2::Index< Bits, PrimCountBits >::operator== ( const Index< Bits, PrimCountBits > &  other ) const

inline

Definition at line 50 of file index.h.

prim_count()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE Type bvh::v2::Index< Bits, PrimCountBits >::prim_count ( ) const

inline

Definition at line 58 of file index.h.

set_first_id()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE void bvh::v2::Index< Bits, PrimCountBits >::set_first_id ( size_t  first_id )

inline

Definition at line 62 of file index.h.

set_prim_count()

template<size_t Bits, size_t PrimCountBits>

BVH_ALWAYS_INLINE void bvh::v2::Index< Bits, PrimCountBits >::set_prim_count ( size_t  prim_count )

inline

Definition at line 66 of file index.h.

Member Data Documentation

bits

template<size_t Bits, size_t PrimCountBits>

constexpr size_t bvh::v2::Index< Bits, PrimCountBits >::bits = Bits

staticconstexpr

Definition at line 36 of file index.h.

max_first_id

template<size_t Bits, size_t PrimCountBits>

constexpr Type bvh::v2::Index< Bits, PrimCountBits >::max_first_id = make_bitmask<Type>(bits - prim_count_bits)

staticconstexpr

Definition at line 39 of file index.h.

max_prim_count

template<size_t Bits, size_t PrimCountBits>

constexpr Type bvh::v2::Index< Bits, PrimCountBits >::max_prim_count = make_bitmask<Type>(prim_count_bits)

staticconstexpr

Definition at line 38 of file index.h.

prim_count_bits

template<size_t Bits, size_t PrimCountBits>

constexpr size_t bvh::v2::Index< Bits, PrimCountBits >::prim_count_bits = PrimCountBits

staticconstexpr

Definition at line 37 of file index.h.

value

template<size_t Bits, size_t PrimCountBits>

Type bvh::v2::Index< Bits, PrimCountBits >::value

Definition at line 43 of file index.h.

Collaboration diagram for bvh::v2::Index< Bits, PrimCountBits >:

---

The documentation for this struct was generated from the following file:

• geom/geom/inc/bvh/v2/index.h