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cugar::LambertTransBsdf Struct Reference
Fermat » BSDF

Detailed description

Implements a Lambertian transmitter bsdf.

#include <lambert_trans.h>

Public Methods

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE LambertTransBsdf (const Vector3f _color)
 
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

Vector3f color
 

Member Function Documentation

◆ f()

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f cugar::LambertTransBsdf::f ( const DifferentialGeometry &  geometry,
const Vector3f  V,
const Vector3f  L 
) const
inline

evaluate the BRDF f(V,L)

◆ f_and_p()

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

evaluate the BRDF and the pdf in a single call

◆ f_over_p()

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE Vector3f cugar::LambertTransBsdf::f_over_p ( const DifferentialGeometry &  geometry,
const Vector3f  V,
const Vector3f  L 
) const
inline

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

◆ inverse_pdf()

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void cugar::LambertTransBsdf::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 RandomGeneratorT >
CUGAR_FORCEINLINE CUGAR_HOST_DEVICE bool cugar::LambertTransBsdf::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()

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE float cugar::LambertTransBsdf::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()

CUGAR_FORCEINLINE CUGAR_HOST_DEVICE void cugar::LambertTransBsdf::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:
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