PBRT
/home/felix/UBC/projects/AdaptiveLightfieldSampling/pbrt_v2/src/renderers/metropolis.h
00001 
00002 /*
00003     pbrt source code Copyright(c) 1998-2012 Matt Pharr and Greg Humphreys.
00004 
00005     This file is part of pbrt.
00006 
00007     Redistribution and use in source and binary forms, with or without
00008     modification, are permitted provided that the following conditions are
00009     met:
00010 
00011     - Redistributions of source code must retain the above copyright
00012       notice, this list of conditions and the following disclaimer.
00013 
00014     - Redistributions in binary form must reproduce the above copyright
00015       notice, this list of conditions and the following disclaimer in the
00016       documentation and/or other materials provided with the distribution.
00017 
00018     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00019     IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00020     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00021     PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
00022     HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00023     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00024     LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00025     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00026     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00027     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00028     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029 
00030  */
00031 
00032 #if defined(_MSC_VER)
00033 #pragma once
00034 #endif
00035 
00036 #ifndef PBRT_RENDERERS_METROPOLIS_H
00037 #define PBRT_RENDERERS_METROPOLIS_H
00038 
00039 // renderers/metropolis.h*
00040 #include "pbrt.h"
00041 #include "renderer.h"
00042 #include "parallel.h"
00043 struct MLTSample;
00044 class DirectLightingIntegrator;
00045 struct LightingSample;
00046 
00047 // Metropolis Declarations
00048 struct PathVertex;
00049 
00050 class MetropolisRenderer : public Renderer {
00051 public:
00052     // MetropolisRenderer Public Methods
00053     MetropolisRenderer(int perPixelSamples, int nBootstrap,
00054         int directPixelSamples, float largeStepProbability,
00055         bool doDirectSeparately, int maxConsecutiveRejects, int maxDepth,
00056         Camera *camera, bool doBidirectional);
00057     ~MetropolisRenderer();
00058     void Render(const Scene *scene);
00059     Spectrum Li(const Scene *scene, const RayDifferential &ray,
00060         const Sample *sample, RNG &rng, MemoryArena &arena,
00061         Intersection *isect = NULL, Spectrum *T = NULL) const;
00062     Spectrum Transmittance(const Scene *scene, const RayDifferential &ray,
00063         const Sample *sample, RNG &rng, MemoryArena &arena) const;
00064 private:
00065     // MetropolisRenderer Private Methods
00066     Spectrum PathL(const MLTSample &sample, const Scene *scene,
00067         MemoryArena &arena, const Camera *camera,
00068         const Distribution1D *lightDistribution, PathVertex *cameraPath,
00069         PathVertex *lightPath, RNG &rng) const;
00070     Spectrum Lpath(const Scene *scene, const PathVertex *path, int pathLength,
00071         MemoryArena &arena, const vector<LightingSample> &samples,
00072         RNG &rng, float time, const Distribution1D *lightDistribution,
00073         const RayDifferential &escapedRay, const Spectrum &escapedAlpha) const;
00074     Spectrum Lbidir(const Scene *scene,
00075         const PathVertex *cameraPath, int cameraPathLength,
00076         const PathVertex *lightPath, int lightPathLength,
00077         MemoryArena &arena, const vector<LightingSample> &samples,
00078         RNG &rng, float time, const Distribution1D *lightDistribution,
00079         const RayDifferential &escapedRay, const Spectrum &escapedAlpha) const;
00080 
00081     // MetropolisRenderer Private Data
00082     Camera *camera;
00083     bool bidirectional;
00084     uint32_t nDirectPixelSamples, nPixelSamples, maxDepth;
00085     uint32_t largeStepsPerPixel, nBootstrap, maxConsecutiveRejects;
00086     DirectLightingIntegrator *directLighting;
00087     AtomicInt32 nTasksFinished;
00088     friend class MLTTask;
00089 };
00090 
00091 
00092 MetropolisRenderer *CreateMetropolisRenderer(const ParamSet &params,
00093     Camera *camera);
00094 
00095 #endif // PBRT_RENDERERS_METROPOLIS_H