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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_ReadBufferOperation.h"
#include "COM_WriteBufferOperation.h"
#include "COM_defines.h"
namespace blender::compositor {
ReadBufferOperation::ReadBufferOperation(DataType datatype)
{
this->addOutputSocket(datatype);
this->m_single_value = false;
this->m_offset = 0;
this->m_buffer = nullptr;
flags.is_read_buffer_operation = true;
}
void *ReadBufferOperation::initializeTileData(rcti * /*rect*/)
{
return m_buffer;
}
void ReadBufferOperation::determineResolution(unsigned int resolution[2],
unsigned int preferredResolution[2])
{
if (this->m_memoryProxy != nullptr) {
WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
operation->determineResolution(resolution, preferredResolution);
operation->setResolution(resolution);
/** \todo: may not occur!, but does with blur node */
if (this->m_memoryProxy->getExecutor()) {
this->m_memoryProxy->getExecutor()->setResolution(resolution);
}
m_single_value = operation->isSingleValue();
}
}
void ReadBufferOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
if (m_single_value) {
/* write buffer has a single value stored at (0,0) */
m_buffer->read(output, 0, 0);
}
else {
switch (sampler) {
case PixelSampler::Nearest:
m_buffer->read(output, x, y);
break;
case PixelSampler::Bilinear:
default:
m_buffer->readBilinear(output, x, y);
break;
case PixelSampler::Bicubic:
m_buffer->readBilinear(output, x, y);
break;
}
}
}
void ReadBufferOperation::executePixelExtend(float output[4],
float x,
float y,
PixelSampler sampler,
MemoryBufferExtend extend_x,
MemoryBufferExtend extend_y)
{
if (m_single_value) {
/* write buffer has a single value stored at (0,0) */
m_buffer->read(output, 0, 0);
}
else if (sampler == PixelSampler::Nearest) {
m_buffer->read(output, x, y, extend_x, extend_y);
}
else {
m_buffer->readBilinear(output, x, y, extend_x, extend_y);
}
}
void ReadBufferOperation::executePixelFiltered(
float output[4], float x, float y, float dx[2], float dy[2])
{
if (m_single_value) {
/* write buffer has a single value stored at (0,0) */
m_buffer->read(output, 0, 0);
}
else {
const float uv[2] = {x, y};
const float deriv[2][2] = {{dx[0], dx[1]}, {dy[0], dy[1]}};
m_buffer->readEWA(output, uv, deriv);
}
}
bool ReadBufferOperation::determineDependingAreaOfInterest(rcti *input,
ReadBufferOperation *readOperation,
rcti *output)
{
if (this == readOperation) {
BLI_rcti_init(output, input->xmin, input->xmax, input->ymin, input->ymax);
return true;
}
return false;
}
void ReadBufferOperation::readResolutionFromWriteBuffer()
{
if (this->m_memoryProxy != nullptr) {
WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
this->setWidth(operation->getWidth());
this->setHeight(operation->getHeight());
}
}
void ReadBufferOperation::updateMemoryBuffer()
{
this->m_buffer = this->getMemoryProxy()->getBuffer();
}
} // namespace blender::compositor
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