sh.cpp File Reference

#include "stdafx.h"
#include "sh.h"
#include "scene.h"
#include "integrator.h"
#include "intersection.h"
#include "montecarlo.h"
#include "imageio.h"
#include <float.h>

Go to the source code of this file.

Defines

#define P(l, m)   out[SHIndex(l,m)]
#define M(a, b)   (m.m[a][b])

Functions

static void legendrep (float x, int lmax, float *out)
static float fact (float v)
static float divfact (int a, int b)
static float K (int l, int m)
static float dfact (float v)
static void sinCosIndexed (float s, float c, int n, float *sout, float *cout)
static void toZYZ (const Matrix4x4 &m, float *alpha, float *beta, float *gamma)
static float lambda (float l)
void SHEvaluate (const Vector &w, int lmax, float *out)
void SHWriteImage (const char *filename, const Spectrum *c, int lmax, int yres)
void SHProjectIncidentDirectRadiance (const Point &p, float pEpsilon, float time, MemoryArena &arena, const Scene *scene, bool computeLightVis, int lmax, RNG &rng, Spectrum *c_d)
void SHProjectIncidentIndirectRadiance (const Point &p, float pEpsilon, float time, const Renderer *renderer, Sample *origSample, const Scene *scene, int lmax, RNG &rng, int ns, Spectrum *c_i)
void SHReduceRinging (Spectrum *c, int lmax, float lambda)
void SHRotate (const Spectrum *c_in, Spectrum *c_out, const Matrix4x4 &m, int lmax, MemoryArena &arena)
void SHRotateZ (const Spectrum *c_in, Spectrum *c_out, float alpha, int lmax)
void SHConvolveCosTheta (int lmax, const Spectrum *c_in, Spectrum *c_out)
void SHConvolvePhong (int lmax, float n, const Spectrum *c_in, Spectrum *c_out)
void SHComputeDiffuseTransfer (const Point &p, const Normal &n, float rayEpsilon, const Scene *scene, RNG &rng, int nSamples, int lmax, Spectrum *c_transfer)
void SHComputeTransferMatrix (const Point &p, float rayEpsilon, const Scene *scene, RNG &rng, int nSamples, int lmax, Spectrum *T)
void SHComputeBSDFMatrix (const Spectrum &Kd, const Spectrum &Ks, float roughness, RNG &rng, int nSamples, int lmax, Spectrum *B)
void SHMatrixVectorMultiply (const Spectrum *M, const Spectrum *v, Spectrum *vout, int lmax)

Define Documentation

#define M ( a,
b   )     (m.m[a][b])
#define P ( l,
m   )     out[SHIndex(l,m)]

Referenced by CreateLoopSubdivShape(), CreateNURBSShape(), CreatePointLight(), CreateTriangleMeshShape(), WrinkledTexture< T >::Evaluate(), WindyTexture< T >::Evaluate(), MarbleTexture::Evaluate(), FBmTexture< T >::Evaluate(), legendrep(), NURBSEvaluateSurface(), LoopSubdiv::ObjectBound(), LoopSubdiv::Refine(), Heightfield::Refine(), LoopSubdiv::weightBoundary(), and LoopSubdiv::weightOneRing().

Function Documentation

static float dfact ( float  v  )  [static]

Definition at line 115 of file sh.cpp.

Referenced by legendrep().

static float divfact ( int  a,
int  b 
) [inline, static]

Definition at line 104 of file sh.cpp.

Referenced by K().

static float fact ( float  v  )  [inline, static]

Definition at line 121 of file sh.cpp.

Referenced by legendrep().

static float K ( int  l,
int  m 
) [inline, static]

Definition at line 99 of file sh.cpp.

References divfact(), and INV_FOURPI.

Referenced by SHEvaluate().

static float lambda ( float  l  )  [inline, static]

Definition at line 158 of file sh.cpp.

References M_PI.

Referenced by FBm(), SHConvolveCosTheta(), SHConvolvePhong(), and Turbulence().

static void legendrep ( float  x,
int  lmax,
float *  out 
) [static]

Definition at line 36 of file sh.cpp.

References Assert, dfact(), fact(), and P.

Referenced by SHEvaluate().

void SHComputeBSDFMatrix ( const Spectrum &  Kd,
const Spectrum &  Ks,
float  roughness,
RNG &  rng,
int  nSamples,
int  lmax,
Spectrum *  B 
)

Definition at line 437 of file sh.cpp.

References BSDF::Add(), arena, BSDF_ALLOC, CosTheta(), BSDF::f(), CoefficientSpectrum< nSamples >::IsBlack(), RNG::RandomUInt(), Sample02(), SHEvaluate(), SHTerms(), UniformSampleSphere(), and UniformSpherePdf().

Referenced by GlossyPRTIntegrator::Preprocess().

void SHComputeDiffuseTransfer ( const Point &  p,
const Normal &  n,
float  rayEpsilon,
const Scene *  scene,
RNG &  rng,
int  nSamples,
int  lmax,
Spectrum *  c_transfer 
)

Definition at line 390 of file sh.cpp.

References AbsDot(), ALLOCA, Dot(), Scene::IntersectP(), RNG::RandomUInt(), Sample02(), SHEvaluate(), SHTerms(), UniformSampleSphere(), and UniformSpherePdf().

Referenced by DiffusePRTIntegrator::Li().

void SHComputeTransferMatrix ( const Point &  p,
float  rayEpsilon,
const Scene *  scene,
RNG &  rng,
int  nSamples,
int  lmax,
Spectrum *  T 
)

Definition at line 413 of file sh.cpp.

References ALLOCA, Scene::IntersectP(), RNG::RandomUInt(), Sample02(), SHEvaluate(), SHTerms(), UniformSampleSphere(), and UniformSpherePdf().

Referenced by GlossyPRTIntegrator::Li().

void SHConvolveCosTheta ( int  lmax,
const Spectrum *  c_in,
Spectrum *  c_out 
)

Definition at line 362 of file sh.cpp.

References lambda(), and SHIndex().

Referenced by UseRadianceProbes::Li().

void SHConvolvePhong ( int  lmax,
float  n,
const Spectrum *  c_in,
Spectrum *  c_out 
)

Definition at line 378 of file sh.cpp.

References lambda(), and SHIndex().

void SHEvaluate ( const Vector &  w,
int  lmax,
float *  out 
)

Definition at line 165 of file sh.cpp.

References ALLOCA, Assert, K(), legendrep(), Vector::Length(), Severe(), SHIndex(), SHTerms(), sinCosIndexed(), Vector::x, Vector::y, and Vector::z.

Referenced by UseRadianceProbes::Li(), GlossyPRTIntegrator::Li(), SHComputeBSDFMatrix(), SHComputeDiffuseTransfer(), SHComputeTransferMatrix(), PointLight::SHProject(), Light::SHProject(), InfiniteAreaLight::SHProject(), SHProjectCube(), SHProjectIncidentIndirectRadiance(), and SHWriteImage().

void SHMatrixVectorMultiply ( const Spectrum *  M,
const Spectrum *  v,
Spectrum *  vout,
int  lmax 
)

Definition at line 486 of file sh.cpp.

References SHTerms().

Referenced by GlossyPRTIntegrator::Li().

void SHProjectIncidentDirectRadiance ( const Point &  p,
float  pEpsilon,
float  time,
MemoryArena &  arena,
const Scene *  scene,
bool  computeLightVis,
int  lmax,
RNG &  rng,
Spectrum *  c_d 
)

Definition at line 261 of file sh.cpp.

References MemoryArena::Alloc(), Scene::lights, Light::SHProject(), SHReduceRinging(), and SHTerms().

Referenced by GlossyPRTIntegrator::Preprocess(), DiffusePRTIntegrator::Preprocess(), and CreateRadProbeTask::Run().

void SHProjectIncidentIndirectRadiance ( const Point &  p,
float  pEpsilon,
float  time,
const Renderer *  renderer,
Sample *  origSample,
const Scene *  scene,
int  lmax,
RNG &  rng,
int  ns,
Spectrum *  c_i 
)

Definition at line 277 of file sh.cpp.

References ALLOCA, arena, Sample::Duplicate(), MemoryArena::FreeAll(), INFINITY, Renderer::Li(), Sample::n1D, Sample::n2D, Sample::oneD, RNG::RandomFloat(), RNG::RandomUInt(), RoundUpPow2(), Sample02(), SHEvaluate(), SHTerms(), CameraSample::time, Sample::twoD, UniformSampleSphere(), and UniformSpherePdf().

Referenced by CreateRadProbeTask::Run().

void SHReduceRinging ( Spectrum *  c,
int  lmax,
float  lambda 
)

Definition at line 316 of file sh.cpp.

References SHIndex().

Referenced by SHProjectIncidentDirectRadiance().

void SHRotate ( const Spectrum *  c_in,
Spectrum *  c_out,
const Matrix4x4 &  m,
int  lmax,
MemoryArena &  arena 
)

Definition at line 325 of file sh.cpp.

References MemoryArena::Alloc(), SHRotateXMinus(), SHRotateXPlus(), SHRotateZ(), SHTerms(), and toZYZ().

Referenced by GlossyPRTIntegrator::Li().

void SHRotateZ ( const Spectrum *  c_in,
Spectrum *  c_out,
float  alpha,
int  lmax 
)

Definition at line 338 of file sh.cpp.

References ALLOCA, Assert, SHIndex(), and sinCosIndexed().

Referenced by SHRotate().

void SHWriteImage ( const char *  filename,
const Spectrum *  c,
int  lmax,
int  yres 
)

Definition at line 237 of file sh.cpp.

References ALLOCA, M_PI, SHEvaluate(), SHTerms(), SphericalDirection(), RGBSpectrum::ToRGB(), and WriteImage().

static void sinCosIndexed ( float  s,
float  c,
int  n,
float *  sout,
float *  cout 
) [static]

Definition at line 127 of file sh.cpp.

Referenced by SHEvaluate(), and SHRotateZ().

static void toZYZ ( const Matrix4x4 &  m,
float *  alpha,
float *  beta,
float *  gamma 
) [static]

Definition at line 141 of file sh.cpp.

References M.

Referenced by SHRotate().

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