Differential D6544 Diff 20675 source/blender/compositor/operations/COM_ExposureOperation.cpp

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source/blender/compositor/operations/COM_ExposureOperation.cpp

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				/*
				* This program is free software; you can redistribute it and/or
				* modify it under the terms of the GNU General Public License
				* as published by the Free Software Foundation; either version 2
				* of the License, or (at your option) any later version.
				*
				* This program is distributed in the hope that it will be useful,
				* but WITHOUT ANY WARRANTY; without even the implied warranty of
				* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
				* GNU General Public License for more details.
				*
				* You should have received a copy of the GNU General Public License
				* along with this program; if not, write to the Free Software Foundation,
				* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
				*
				* Copyright 2011, Blender Foundation.
				*/

				#include "COM_ExposureOperation.h"

				ExposureOperation::ExposureOperation() : NodeOperation()
				{
				this->addInputSocket(COM_DT_COLOR);
				this->addInputSocket(COM_DT_VALUE);
				this->addOutputSocket(COM_DT_COLOR);
				this->m_inputProgram = NULL;
				this->m_use_alpha = false;
				}

				void ExposureOperation::setUseAlpha(bool use_alpha)
				{
				this->m_use_alpha = use_alpha;
				}

				void ExposureOperation::initExecution()
				{
				this->m_inputProgram = this->getInputSocketReader(0);
				this->m_inputExposureProgram = this->getInputSocketReader(1);
				}

				void ExposureOperation::executePixelSampled(float output[4],
				float x,
				float y,
				PixelSampler sampler)
				{
				float inputValue[4];
				float inputExposure[4];
				this->m_inputProgram->readSampled(inputValue, x, y, sampler);
				this->m_inputExposureProgram->readSampled(inputExposure, x, y, sampler);
				float exposure = inputExposure[0];

				output[0] = inputValue[0] * exposure;
				output[1] = inputValue[1] * exposure;
				output[2] = inputValue[2] * exposure;
				if (this->m_use_alpha) {
				output[3] = inputValue[3] * exposure;
				} else {
				output[3] = inputValue[3];
				}
				}

				void ExposureOperation::deinitExecution()
				{
				this->m_inputProgram = NULL;
				this->m_inputExposureProgram = NULL;
				}