00001 00002 /* 00003 pbrt source code Copyright(c) 1998-2010 Matt Pharr and Greg Humphreys. 00004 00005 This file is part of pbrt. 00006 00007 pbrt is free software; you can redistribute it and/or modify 00008 it under the terms of the GNU General Public License as published by 00009 the Free Software Foundation; either version 2 of the License, or 00010 (at your option) any later version. Note that the text contents of 00011 the book "Physically Based Rendering" are *not* licensed under the 00012 GNU GPL. 00013 00014 pbrt is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00017 GNU General Public License for more details. 00018 00019 You should have received a copy of the GNU General Public License 00020 along with this program. If not, see <http://www.gnu.org/licenses/>. 00021 00022 */ 00023 00024 #if defined(_MSC_VER) 00025 #pragma once 00026 #endif 00027 00028 #ifndef PBRT_INTEGRATORS_PATH_H 00029 #define PBRT_INTEGRATORS_PATH_H 00030 00031 // integrators/path.h* 00032 #include "pbrt.h" 00033 #include "integrator.h" 00034 00035 // PathIntegrator Declarations 00036 class PathIntegrator : public SurfaceIntegrator { 00037 public: 00038 // PathIntegrator Public Methods 00039 Spectrum Li(const Scene *scene, const Renderer *renderer, 00040 const RayDifferential &ray, const Intersection &isect, 00041 const Sample *sample, RNG &rng, MemoryArena &arena) const; 00042 void RequestSamples(Sampler *sampler, Sample *sample, const Scene *scene); 00043 PathIntegrator(int md) { maxDepth = md; } 00044 private: 00045 // PathIntegrator Private Data 00046 int maxDepth; 00047 #define SAMPLE_DEPTH 3 00048 LightSampleOffsets lightSampleOffsets[SAMPLE_DEPTH]; 00049 int lightNumOffset[SAMPLE_DEPTH]; 00050 BSDFSampleOffsets bsdfSampleOffsets[SAMPLE_DEPTH]; 00051 BSDFSampleOffsets pathSampleOffsets[SAMPLE_DEPTH]; 00052 }; 00053 00054 00055 PathIntegrator *CreatePathSurfaceIntegrator(const ParamSet ¶ms); 00056 00057 #endif // PBRT_INTEGRATORS_PATH_H