Detailed description

template<typename TBsdf1, typename TBsdf2>
struct cugar::BlendBsdf< TBsdf1, TBsdf2 >

Implements a weighted blending between two BSDFs.

#include <blend.h>

Public Methods
CUGAR_FORCEINLINE CUGAR_HOST_DEVICE	BlendBsdf (const float _w1=0.5f, const float _w2=0.5f, const TBsdf1 _bsdf1=TBsdf1(), const TBsdf2 _bsdf2=TBsdf2())

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f	f (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L) const

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f	f_over_p (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L) const

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void	f_and_p (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L, Vector3f &f, float &p, const SphericalMeasure measure=kProjectedSolidAngle) const

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE float	p (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L, const SphericalMeasure measure=kProjectedSolidAngle) const

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void	sample (const Vector3f u, const DifferentialGeometry &geometry, const Vector3f V, Vector3f &L, Vector3f &g, float &p, float &p_proj) const

template<typename RandomGeneratorT >
CUGAR_FORCEINLINE CUGAR_HOST_DEVICE bool	invert (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L, RandomGeneratorT &random, Vector3f &z, float &p, float &p_proj) const

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void	inverse_pdf (const DifferentialGeometry &geometry, const Vector3f V, const Vector3f L, const Vector3f u, float &p, float &p_proj) const

Public Members
float	w1

float	w2

TBsdf1	bsdf1

TBsdf2	bsdf2

Constructor & Destructor Documentation

◆ BlendBsdf()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE cugar::BlendBsdf< TBsdf1, TBsdf2 >::BlendBsdf	(	const float	_w1 = `0.5f`,
		const float	_w2 = `0.5f`,
		const TBsdf1	_bsdf1 = `TBsdf1()`,
		const TBsdf2	_bsdf2 = `TBsdf2()`
	)

inline

constructor: this method accepts weights _w1 and _w2 for the corresponding BSDF components; the weights must be such that their sum is equal to or less than 1. If it is less, some energy will be absorbed.

Parameters

_w1	the weight of the first BSDF
_w2	the weight of the second BSDF

Member Function Documentation

◆ f()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f cugar::BlendBsdf< TBsdf1, TBsdf2 >::f	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L
	)		const

inline

evaluate the BSDF f(V,L)

◆ f_and_p()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void cugar::BlendBsdf< TBsdf1, TBsdf2 >::f_and_p	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L,
		Vector3f &	f,
		float &	p,
		const SphericalMeasure	measure = `kProjectedSolidAngle`
	)		const

inline

evaluate the BSDF and the pdf in a single call

◆ f_over_p()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f cugar::BlendBsdf< TBsdf1, TBsdf2 >::f_over_p	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L
	)		const

inline

evaluate the BSDF/pdf ratio f(V,L)/p(V,L) wrt projected solid angle

◆ inverse_pdf()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void cugar::BlendBsdf< TBsdf1, TBsdf2 >::inverse_pdf	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L,
		const Vector3f	u,
		float &	p,
		float &	p_proj
	)		const

inline

given V and L and u, compute the probability of sampling u by inversion of V and L

◆ invert()

template<typename TBsdf1 , typename TBsdf2 >

template<typename RandomGeneratorT >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE bool cugar::BlendBsdf< TBsdf1, TBsdf2 >::invert	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L,
		RandomGeneratorT &	random,
		Vector3f &	z,
		float &	p,
		float &	p_proj
	)		const

inline

given V and L, invert the sampling functions used to generate L from V

◆ p()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE float cugar::BlendBsdf< TBsdf1, TBsdf2 >::p	(	const DifferentialGeometry &	geometry,
		const Vector3f	V,
		const Vector3f	L,
		const SphericalMeasure	measure = `kProjectedSolidAngle`
	)		const

inline

evaluate the pdf of sampling L given V, p(L|V) = p(V,L)

◆ sample()

template<typename TBsdf1 , typename TBsdf2 >

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void cugar::BlendBsdf< TBsdf1, TBsdf2 >::sample	(	const Vector3f	u,
		const DifferentialGeometry &	geometry,
		const Vector3f	V,
		Vector3f &	L,
		Vector3f &	g,
		float &	p,
		float &	p_proj
	)		const

inline

sample L given V and return both the pdf p and the value g = f/p, wrt projected solid angle

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

C:/p4research/research/jpantaleoni/Fermat-Public/contrib/cugar/bsdf/blend.h

Detailed description

template<typename TBsdf1, typename TBsdf2> struct cugar::BlendBsdf< TBsdf1, TBsdf2 >

Public Methods

Public Members

Constructor & Destructor Documentation

◆ BlendBsdf()

Member Function Documentation

◆ f()

◆ f_and_p()

◆ f_over_p()

◆ inverse_pdf()

◆ invert()

◆ p()

◆ sample()

template<typename TBsdf1, typename TBsdf2>
struct cugar::BlendBsdf< TBsdf1, TBsdf2 >