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blender-archive/source/blender/compositor/operations/COM_TranslateOperation.cpp
Sergey Sharybin 6b256a7cd8 Fix subpixel precision in transform node
The node was using sampler from the callee node and passed
it to the input nodes. Since the fact that compositor output
node uses NEAREST interpolation (why it uses nearest is the
whole separate story) it's not possible to have subpixel
precision in such cases:

  <image> -> <translate> -> <output>

For now solving by hard-coding translate node to use BILINEAR
interpolation. It can't become worse in this node anyway and
the sampling pipeline is to be re-visited from scratch.
2014-06-05 22:05:05 +06:00

85 lines
2.5 KiB
C++

/*
* Copyright 2011, Blender Foundation.
*
* 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.
*
* Contributor:
* Jeroen Bakker
* Monique Dewanchand
* Thomas Beck (plasmasolutions.de)
*/
#include "COM_TranslateOperation.h"
TranslateOperation::TranslateOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_COLOR);
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_COLOR);
this->setResolutionInputSocketIndex(0);
this->m_inputOperation = NULL;
this->m_inputXOperation = NULL;
this->m_inputYOperation = NULL;
this->m_isDeltaSet = false;
this->m_factorX = 1.0f;
this->m_factorY = 1.0f;
}
void TranslateOperation::initExecution()
{
this->m_inputOperation = this->getInputSocketReader(0);
this->m_inputXOperation = this->getInputSocketReader(1);
this->m_inputYOperation = this->getInputSocketReader(2);
}
void TranslateOperation::deinitExecution()
{
this->m_inputOperation = NULL;
this->m_inputXOperation = NULL;
this->m_inputYOperation = NULL;
}
void TranslateOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
ensureDelta();
float originalXPos = x - this->getDeltaX();
float originalYPos = y - this->getDeltaY();
this->m_inputOperation->readSampled(output, originalXPos, originalYPos, COM_PS_BILINEAR);
}
bool TranslateOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
ensureDelta();
newInput.xmin = input->xmin - this->getDeltaX();
newInput.xmax = input->xmax - this->getDeltaX();
newInput.ymin = input->ymin - this->getDeltaY();
newInput.ymax = input->ymax - this->getDeltaY();
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
void TranslateOperation::setFactorXY(float factorX, float factorY)
{
m_factorX = factorX;
m_factorY = factorY;
}