bvh::v2 Namespace Reference

Classes
struct	BBox
class	BinnedSahBuilder
	Single-threaded top-down builder that partitions primitives based on a binned approximation of the Surface Area Heuristic (SAH). More...
struct	Bvh
class	DefaultBuilder
	This builder is only a wrapper around all the other builders, which selects the best builder depending on the desired BVH quality and whether a multi-threaded build is desired. More...
struct	Executor
	Helper object that provides iteration and reduction over one-dimensional ranges. More...
struct	GrowingStack
	Growing stack that can be used for BVH traversal. More...
struct	IgnoreArgs
	Helper callable object that just ignores its arguments and returns nothing. More...
struct	Index
	Packed index data structure. More...
class	InputStream
	Stream of data that can be used to deserialize data structures. More...
class	MiniTreeBuilder
	Multi-threaded top-down builder that partitions primitives using a grid. More...
struct	Node
	Binary BVH node, containing its bounds and an index into its children or the primitives it contains. More...
struct	Octant
class	OutputStream
	Stream of data that can be used to serialize data structures. More...
struct	ParallelExecutor
	Executor that executes in parallel using the given thread pool. More...
struct	Ray
class	ReinsertionOptimizer
struct	SequentialExecutor
	Executor that executes serially. More...
struct	SmallStack
	Fixed-size stack that can be used for a BVH traversal. More...
class	SplitHeuristic
class	StdInputStream
	Stream adapter for standard library input streams. More...
class	StdOutputStream
	Stream adapter for standard library output streams. More...
class	SweepSahBuilder
	Single-threaded top-down builder that partitions primitives based on the Surface Area Heuristic (SAH). More...
class	ThreadPool
class	TopDownSahBuilder
	Base class for all SAH-based, top-down builders. More...
struct	UnsignedInt
	Helper type that gives an unsigned integer type with the given number of bits. More...
struct	UnsignedInt< 16 >
struct	UnsignedInt< 32 >
struct	UnsignedInt< 64 >
struct	UnsignedInt< 8 >
struct	Vec

Typedefs
template<size_t Bits>
using	UnsignedIntType = typename UnsignedInt<Bits>::Type

Functions
template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	add_ulp_magnitude (T t, unsigned ulp)
	Adds the given number of ULPs (Units in the Last Place) to the given floating-point number.
template<typename T >
BVH_ALWAYS_INLINE T	atomic_max (std::atomic< T > &atomic, const T &value)
	Computes the maximum between an atomic variable and a value, and returns the value previously held by the atomic variable.
template<typename T >
BVH_ALWAYS_INLINE Vec< T, 3 >	cross (const Vec< T, 3 > &a, const Vec< T, 3 > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE T	dot (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	fast_mul_add (const Vec< T, N > &a, const Vec< T, N > &b, const Vec< T, N > &c)
template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	fast_mul_add (T a, T b, T c)
	Fast multiply-add operation.
template<typename T , size_t N>
BVH_ALWAYS_INLINE T	length (const Vec< T, N > &v)
template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>
BVH_ALWAYS_INLINE constexpr T	make_bitmask (size_t bits)
	Generates a bitmask with the given number of bits.
template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	morton_encode (T x, T y, T z)
	Morton-encode three unsigned integers into one.
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	normalize (const Vec< T, N > &v)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator* (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator* (const Vec< T, N > &a, T b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator* (T a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator+ (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator- (const Vec< T, N > &a)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator- (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator/ (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	operator/ (T a, const Vec< T, N > &b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	robust_max (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	robust_max (T a, T b)
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	robust_min (const Vec< T, N > &a, const Vec< T, N > &b)
template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	robust_min (T a, T b)
template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>
constexpr T	round_up_log2 (T i, T p=0)
	Computes the (rounded-up) compile-time log in base-2 of an unsigned integer.
template<typename T , size_t N>
BVH_ALWAYS_INLINE Vec< T, N >	safe_inverse (const Vec< T, N > &v)
template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	safe_inverse (T x)
	Computes the inverse of the given value, always returning a finite value.
template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>
BVH_ALWAYS_INLINE T	split_bits (T x)
	Split an unsigned integer such that its bits are spaced by 2 zeros.
template<size_t Begin, size_t End, typename F >
BVH_ALWAYS_INLINE void	static_for (F &&f)
	Executes the given function once for every integer in the range [Begin, End).

Typedef Documentation

UnsignedIntType

template<size_t Bits>

using bvh::v2::UnsignedIntType = typename UnsignedInt<Bits>::Type

Definition at line 25 of file utils.h.

Function Documentation

add_ulp_magnitude()

template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::add_ulp_magnitude	(	T	t,
		unsigned	ulp )

Adds the given number of ULPs (Units in the Last Place) to the given floating-point number.

Definition at line 47 of file utils.h.

atomic_max()

template<typename T >

BVH_ALWAYS_INLINE T bvh::v2::atomic_max	(	std::atomic< T > &	atomic,
		const T &	value )

Computes the maximum between an atomic variable and a value, and returns the value previously held by the atomic variable.

Definition at line 125 of file utils.h.

cross()

template<typename T >

BVH_ALWAYS_INLINE Vec< T, 3 > bvh::v2::cross	(	const Vec< T, 3 > &	a,
		const Vec< T, 3 > &	b )

Definition at line 104 of file vec.h.

dot()

template<typename T , size_t N>

BVH_ALWAYS_INLINE T bvh::v2::dot	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 98 of file vec.h.

fast_mul_add() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::fast_mul_add	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b,
		const Vec< T, N > &	c )

Definition at line 112 of file vec.h.

fast_mul_add() [2/2]

template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::fast_mul_add	(	T	a,
		T	b,
		T	c )

Fast multiply-add operation.

Should translate into an FMA for architectures that support it. On architectures which do not support FMA in hardware, or on which FMA is slow, this defaults to a regular multiplication followed by an addition.

Definition at line 74 of file utils.h.

length()

template<typename T , size_t N>

BVH_ALWAYS_INLINE T bvh::v2::length

(

const Vec< T, N > &

v

)

Definition at line 122 of file vec.h.

make_bitmask()

template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>

BVH_ALWAYS_INLINE constexpr T bvh::v2::make_bitmask ( size_t bits )

constexpr

Generates a bitmask with the given number of bits.

Definition at line 35 of file utils.h.

morton_encode()

template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::morton_encode	(	T	x,
		T	y,
		T	z )

Morton-encode three unsigned integers into one.

Definition at line 118 of file utils.h.

normalize()

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::normalize

(

const Vec< T, N > &

v

)

Definition at line 127 of file vec.h.

operator*() [1/3]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator*	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 63 of file vec.h.

operator*() [2/3]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator*	(	const Vec< T, N > &	a,
		T	b )

Definition at line 73 of file vec.h.

operator*() [3/3]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator*	(	T	a,
		const Vec< T, N > &	b )

Definition at line 78 of file vec.h.

operator+()

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator+	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 48 of file vec.h.

operator-() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator-

(

const Vec< T, N > &

a

)

Definition at line 58 of file vec.h.

operator-() [2/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator-	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 53 of file vec.h.

operator/() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator/	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 68 of file vec.h.

operator/() [2/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::operator/	(	T	a,
		const Vec< T, N > &	b )

Definition at line 83 of file vec.h.

robust_max() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::robust_max	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 93 of file vec.h.

robust_max() [2/2]

template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::robust_max	(	T	a,
		T	b )

Definition at line 43 of file utils.h.

robust_min() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::robust_min	(	const Vec< T, N > &	a,
		const Vec< T, N > &	b )

Definition at line 88 of file vec.h.

robust_min() [2/2]

template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::robust_min	(	T	a,
		T	b )

Definition at line 41 of file utils.h.

round_up_log2()

template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>

constexpr T bvh::v2::round_up_log2 ( T i, T p = 0 )

inlineconstexpr

Computes the (rounded-up) compile-time log in base-2 of an unsigned integer.

Definition at line 97 of file utils.h.

safe_inverse() [1/2]

template<typename T , size_t N>

BVH_ALWAYS_INLINE Vec< T, N > bvh::v2::safe_inverse

(

const Vec< T, N > &

v

)

Definition at line 117 of file vec.h.

safe_inverse() [2/2]

template<typename T , std::enable_if_t< std::is_floating_point_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::safe_inverse

(

T

x

)

Computes the inverse of the given value, always returning a finite value.

Definition at line 59 of file utils.h.

split_bits()

template<typename T , std::enable_if_t< std::is_unsigned_v< T >, bool > = true>

BVH_ALWAYS_INLINE T bvh::v2::split_bits

(

T

x

)

Split an unsigned integer such that its bits are spaced by 2 zeros.

For instance, split_bits(0b00110010) = 0b000000001001000000001000.

Definition at line 104 of file utils.h.

static_for()

template<size_t Begin, size_t End, typename F >

BVH_ALWAYS_INLINE void bvh::v2::static_for

(

F &&

f

)

Executes the given function once for every integer in the range [Begin, End).

Definition at line 88 of file utils.h.