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blender-archive/source/blender/compositor/operations/COM_IDMaskOperation.cpp
Sergey Sharybin 63f2f82f92 Fix T46641: Bicubic transform on ID channel is not bicubic
Better support of bicubic sampling of ID mask output.

The idea is to generate ID mask into a temporary buffer which is then being
interpolated using current sampling method.

This works fine for upscaling or rotating the ID mask but does not work for
scaling down. This is much-much bigger problem of the compositor design and
can't really be solved currently. Same will happen with other nodes like
blur for example.

Reviewers: campbellbarton

Subscribers: ania

Differential Revision: https://developer.blender.org/D1612
2015-11-12 20:29:54 +05:00

49 lines
1.6 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
*/
#include "COM_IDMaskOperation.h"
IDMaskOperation::IDMaskOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_VALUE);
this->setComplex(true);
}
void *IDMaskOperation::initializeTileData(rcti *rect)
{
void *buffer = getInputOperation(0)->initializeTileData(rect);
return buffer;
}
void IDMaskOperation::executePixel(float output[4],
int x,
int y,
void *data)
{
MemoryBuffer *input_buffer = (MemoryBuffer *)data;
const int buffer_width = input_buffer->getWidth();
float *buffer = input_buffer->getBuffer();
int buffer_index = (y * buffer_width + x);
output[0] = (roundf(buffer[buffer_index]) == this->m_objectIndex) ? 1.0f : 0.0f;
}