00001 /*************************************************************************** 00002 * Copyright (C) 1998-2009 by authors (see AUTHORS.txt ) * 00003 * * 00004 * This file is part of LuxRender. * 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.net * 00021 ***************************************************************************/ 00022 00023 // directlighting.cpp* 00024 #include "lux.h" 00025 #include "light.h" 00026 #include "transport.h" 00027 #include "scene.h" 00028 00029 namespace lux 00030 { 00031 00032 // DirectLightingIntegrator Declarations 00033 class DirectLightingIntegrator : public SurfaceIntegrator { 00034 public: 00035 // DirectLightingIntegrator types 00036 enum LightStrategy { 00037 SAMPLE_ALL_UNIFORM, 00038 SAMPLE_ONE_UNIFORM, 00039 SAMPLE_AUTOMATIC 00040 }; 00041 00042 // DirectLightingIntegrator Public Methods 00043 DirectLightingIntegrator(LightStrategy ls, int md); 00044 virtual ~DirectLightingIntegrator() { } 00045 00046 virtual int Li(const TsPack *tspack, const Scene *scene, 00047 const Sample *sample) const; 00048 virtual void RequestSamples(Sample *sample, const Scene *scene); 00049 virtual void Preprocess(const TsPack *tspack, const Scene *scene); 00050 00051 static SurfaceIntegrator *CreateSurfaceIntegrator(const ParamSet ¶ms); 00052 00053 private: 00054 int LiInternal(const TsPack *tspack, const Scene *scene, const RayDifferential &ray, 00055 const Sample *sample, vector<SWCSpectrum> &L, float *alpha, int rayDepth) const; 00056 00057 // DirectLighting Private Data 00058 LightStrategy lightStrategy; 00059 00060 int maxDepth; // NOBOOK 00061 // Declare sample parameters for light source sampling 00062 int sampleOffset, bufferId; 00063 }; 00064 00065 }//namespace lux