00001 /*************************************************************************** 00002 * Copyright (C) 1998-2008 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 // maxwhite.cpp* 00024 #include "tonemap.h" 00025 #include "lux.h" 00026 00027 namespace lux 00028 { 00029 00030 // MaxWhiteOp Declarations 00031 class MaxWhiteOp : public ToneMap { 00032 public: 00033 // MaxWhiteOp Public Methods 00034 void Map(const float *y, int xRes, int yRes, 00035 float maxDisplayY, float *scale) const { 00036 // Compute maximum luminance of all pixels 00037 float maxY = 0.; 00038 for (int i = 0; i < xRes * yRes; ++i) 00039 maxY = max(maxY, y[i]); 00040 float s = maxDisplayY / maxY; 00041 for (int i = 0; i < xRes * yRes; ++i) 00042 scale[i] = s; 00043 } 00044 00045 static ToneMap *CreateToneMap(const ParamSet &ps); 00046 }; 00047 00048 }//namespace lux 00049