00001 /*************************************************************************** 00002 * Copyright (C) 1998-2007 by authors (see AUTHORS.txt ) * 00003 * * 00004 * This file is part of Lux Renderer. * 00005 * * 00006 * Lux Renderer is free software; you can redistribute it and/or modify * 00007 * it under the terms of the GNU General Public License as published by * 00008 * the Free Software Foundation; either version 3 of the License, or * 00009 * (at your option) any later version. * 00010 * * 00011 * Lux Renderer is distributed in the hope that it will be useful, * 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00014 * GNU General Public License for more details. * 00015 * * 00016 * You should have received a copy of the GNU General Public License * 00017 * along with this program. If not, see <http://www.gnu.org/licenses/>. * 00018 * * 00019 * This project is based on PBRT ; see http://www.pbrt.org * 00020 * Lux Renderer website : http://www.luxrender.org * 00021 ***************************************************************************/ 00022 00023 // path.cpp* 00024 #include "lux.h" 00025 #include "transport.h" 00026 #include "metropolis.h" 00027 #include "scene.h" 00028 00029 namespace lux 00030 { 00031 00032 // PathIntegrator Declarations 00033 class PathIntegrator : public SurfaceIntegrator { 00034 public: 00035 // PathIntegrator Public Methods 00036 Spectrum Li(const Scene *scene, const RayDifferential &ray, const Sample *sample, float *alpha) const; 00037 void RequestSamples(Sample *sample, const Scene *scene); 00038 PathIntegrator(int md, float cp, bool mlt, int maxreject, float plarge) { 00039 maxDepth = md; continueProbability = cp; 00040 useMlt = mlt; maxReject = maxreject; pLarge = plarge; 00041 lightPositionOffset = new int[maxDepth]; 00042 lightNumOffset = new int[maxDepth]; 00043 bsdfDirectionOffset = new int[maxDepth]; 00044 bsdfComponentOffset = new int[maxDepth]; 00045 continueOffset = new int[maxDepth]; 00046 outgoingDirectionOffset = new int[maxDepth]; 00047 outgoingComponentOffset = new int[maxDepth]; } 00048 virtual PathIntegrator* clone() const; // Lux (copy) constructor for multithreading 00049 virtual ~PathIntegrator() { delete[] outgoingDirectionOffset; delete[] outgoingComponentOffset; } 00050 IntegrationSampler* HasIntegrationSampler(IntegrationSampler *isa); 00051 static SurfaceIntegrator *CreateSurfaceIntegrator(const ParamSet ¶ms); 00052 private: 00053 // PathIntegrator Private Data 00054 int maxDepth; 00055 float continueProbability; 00056 bool useMlt; 00057 int maxReject; 00058 float pLarge; 00059 IntegrationSampler *mltIntegrationSampler; 00060 int *lightPositionOffset; 00061 int *lightNumOffset; 00062 int *bsdfDirectionOffset; 00063 int *bsdfComponentOffset; 00064 int *continueOffset; 00065 int *outgoingDirectionOffset; 00066 int *outgoingComponentOffset; 00067 }; 00068 00069 }//namespace lux 00070