PBRT
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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 ¶ms, 00093 Camera *camera); 00094 00095 #endif // PBRT_RENDERERS_METROPOLIS_H