integrator.cpp File Reference

#include "stdafx.h"
#include "integrator.h"
#include "scene.h"
#include "intersection.h"
#include "pbrt.h"
#include "diffgeom.h"
#include "transform.h"
#include "montecarlo.h"

Go to the source code of this file.

Functions
Spectrum	UniformSampleAllLights (const Scene *scene, const Renderer *renderer, MemoryArena &arena, const Point &p, const Normal &n, const Vector &wo, float rayEpsilon, float time, BSDF *bsdf, const Sample *sample, RNG &rng, const LightSampleOffsets *lightSampleOffsets, const BSDFSampleOffsets *bsdfSampleOffsets)
Spectrum	UniformSampleOneLight (const Scene *scene, const Renderer *renderer, MemoryArena &arena, const Point &p, const Normal &n, const Vector &wo, float rayEpsilon, float time, BSDF *bsdf, const Sample *sample, RNG &rng, int lightNumOffset, const LightSampleOffsets *lightSampleOffset, const BSDFSampleOffsets *bsdfSampleOffset)
Spectrum	EstimateDirect (const Scene *scene, const Renderer *renderer, MemoryArena &arena, const Light *light, const Point &p, const Normal &n, const Vector &wo, float rayEpsilon, float time, const BSDF *bsdf, RNG &rng, const LightSample &lightSample, const BSDFSample &bsdfSample, BxDFType flags)
Spectrum	SpecularReflect (const RayDifferential &ray, BSDF *bsdf, RNG &rng, const Intersection &isect, const Renderer *renderer, const Scene *scene, const Sample *sample, MemoryArena &arena)
Spectrum	SpecularTransmit (const RayDifferential &ray, BSDF *bsdf, RNG &rng, const Intersection &isect, const Renderer *renderer, const Scene *scene, const Sample *sample, MemoryArena &arena)
Distribution1D *	ComputeLightSamplingCDF (const Scene *scene)

---

Function Documentation

Distribution1D* ComputeLightSamplingCDF

(

const Scene *

scene

)

Definition at line 253 of file integrator.cpp.

References Assert, and Scene::lights.

Referenced by PhotonIntegrator::Preprocess(), IGIIntegrator::Preprocess(), and MetropolisRenderer::Render().

Spectrum EstimateDirect	(	const Scene *	scene,
		const Renderer *	renderer,
		MemoryArena &	arena,
		const Light *	light,
		const Point &	p,
		const Normal &	n,
		const Vector &	wo,
		float	rayEpsilon,
		float	time,
		const BSDF *	bsdf,
		RNG &	rng,
		const LightSample &	lightSample,
		const BSDFSample &	bsdfSample,
		BxDFType	flags
	)

Definition at line 109 of file integrator.cpp.

References AbsDot(), BSDF_SPECULAR, BSDF::f(), Primitive::GetAreaLight(), INFINITY, Scene::Intersect(), CoefficientSpectrum< nSamples >::IsBlack(), Light::IsDeltaLight(), Light::Le(), Intersection::Le(), Light::Pdf(), BSDF::Pdf(), PowerHeuristic(), Intersection::primitive, BSDF::Sample_f(), Light::Sample_L(), Renderer::Transmittance(), VisibilityTester::Transmittance(), and VisibilityTester::Unoccluded().

Referenced by MetropolisRenderer::Lbidir(), MetropolisRenderer::Lpath(), UniformSampleAllLights(), and UniformSampleOneLight().

Spectrum SpecularReflect	(	const RayDifferential &	ray,
		BSDF *	bsdf,
		RNG &	rng,
		const Intersection &	isect,
		const Renderer *	renderer,
		const Scene *	scene,
		const Sample *	sample,
		MemoryArena &	arena
	)

Definition at line 169 of file integrator.cpp.

References AbsDot(), BSDF_REFLECTION, BSDF_SPECULAR, Ray::d, Intersection::dg, BSDF::dgShading, DifferentialGeometry::dndu, DifferentialGeometry::dndv, Dot(), DifferentialGeometry::dpdx, DifferentialGeometry::dpdy, DifferentialGeometry::dudx, DifferentialGeometry::dudy, DifferentialGeometry::dvdx, DifferentialGeometry::dvdy, RayDifferential::hasDifferentials, CoefficientSpectrum< nSamples >::IsBlack(), Renderer::Li(), DifferentialGeometry::nn, DifferentialGeometry::p, Intersection::rayEpsilon, RayDifferential::rxDirection, RayDifferential::rxOrigin, RayDifferential::ryDirection, RayDifferential::ryOrigin, and BSDF::Sample_f().

Referenced by WhittedIntegrator::Li(), PhotonIntegrator::Li(), IrradianceCacheIntegrator::Li(), IGIIntegrator::Li(), DirectLightingIntegrator::Li(), and DipoleSubsurfaceIntegrator::Li().

Spectrum SpecularTransmit	(	const RayDifferential &	ray,
		BSDF *	bsdf,
		RNG &	rng,
		const Intersection &	isect,
		const Renderer *	renderer,
		const Scene *	scene,
		const Sample *	sample,
		MemoryArena &	arena
	)

Definition at line 208 of file integrator.cpp.

References AbsDot(), BSDF_SPECULAR, BSDF_TRANSMISSION, Ray::d, Intersection::dg, BSDF::dgShading, DifferentialGeometry::dndu, DifferentialGeometry::dndv, Dot(), DifferentialGeometry::dpdx, DifferentialGeometry::dpdy, DifferentialGeometry::dudx, DifferentialGeometry::dudy, DifferentialGeometry::dvdx, DifferentialGeometry::dvdy, BSDF::eta, RayDifferential::hasDifferentials, CoefficientSpectrum< nSamples >::IsBlack(), Renderer::Li(), DifferentialGeometry::nn, DifferentialGeometry::p, Intersection::rayEpsilon, RayDifferential::rxDirection, RayDifferential::rxOrigin, RayDifferential::ryDirection, RayDifferential::ryOrigin, and BSDF::Sample_f().

Referenced by WhittedIntegrator::Li(), PhotonIntegrator::Li(), IrradianceCacheIntegrator::Li(), IGIIntegrator::Li(), DirectLightingIntegrator::Li(), and DipoleSubsurfaceIntegrator::Li().

Spectrum UniformSampleAllLights	(	const Scene *	scene,
		const Renderer *	renderer,
		MemoryArena &	arena,
		const Point &	p,
		const Normal &	n,
		const Vector &	wo,
		float	rayEpsilon,
		float	time,
		BSDF *	bsdf,
		const Sample *	sample,
		RNG &	rng,
		const LightSampleOffsets *	lightSampleOffsets,
		const BSDFSampleOffsets *	bsdfSampleOffsets
	)

Definition at line 39 of file integrator.cpp.

References BSDF_ALL, BSDF_SPECULAR, EstimateDirect(), Scene::lights, and LightSampleOffsets::nSamples.

Referenced by UseRadianceProbes::Li(), PhotonIntegrator::Li(), IrradianceCacheIntegrator::Li(), IGIIntegrator::Li(), DirectLightingIntegrator::Li(), and DipoleSubsurfaceIntegrator::Li().

Spectrum UniformSampleOneLight	(	const Scene *	scene,
		const Renderer *	renderer,
		MemoryArena &	arena,
		const Point &	p,
		const Normal &	n,
		const Vector &	wo,
		float	rayEpsilon,
		float	time,
		BSDF *	bsdf,
		const Sample *	sample,
		RNG &	rng,
		int	lightNumOffset,
		const LightSampleOffsets *	lightSampleOffset,
		const BSDFSampleOffsets *	bsdfSampleOffset
	)

Definition at line 74 of file integrator.cpp.

References BSDF_ALL, BSDF_SPECULAR, EstimateDirect(), Floor2Int(), Scene::lights, Sample::oneD, and RNG::RandomFloat().

Referenced by PathIntegrator::Li(), DirectLightingIntegrator::Li(), and IrradianceCacheIntegrator::pathL().