Lukas Tönne
c566e408e4
Distinguish the 3 different methods for acquiring pixel color values (executePixel, executePixelSampled, executePixelFiltered). This makes it easier to keep track of the different sampling methods (and works nicer with IDEs that do code parsing). Differential Revision: http://developer.blender.org/D7
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "COM_ReadBufferOperation.h"
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#include "COM_WriteBufferOperation.h"
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#include "COM_defines.h"
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ReadBufferOperation::ReadBufferOperation() : NodeOperation()
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{
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this->addOutputSocket(COM_DT_COLOR);
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this->m_single_value = false;
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this->m_offset = 0;
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this->m_buffer = NULL;
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}
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void *ReadBufferOperation::initializeTileData(rcti *rect)
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{
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return m_buffer;
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}
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void ReadBufferOperation::determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2])
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{
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if (this->m_memoryProxy != NULL) {
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WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
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operation->determineResolution(resolution, preferredResolution);
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operation->setResolution(resolution);
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/// @todo: may not occur!, but does with blur node
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if (this->m_memoryProxy->getExecutor()) {
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this->m_memoryProxy->getExecutor()->setResolution(resolution);
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}
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m_single_value = operation->isSingleValue();
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}
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}
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void ReadBufferOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
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{
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if (m_single_value) {
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/* write buffer has a single value stored at (0,0) */
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m_buffer->read(output, 0, 0);
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}
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else if (sampler == COM_PS_NEAREST) {
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m_buffer->read(output, x, y);
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}
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else {
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m_buffer->readBilinear(output, x, y);
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}
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}
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void ReadBufferOperation::executePixelExtend(float output[4], float x, float y, PixelSampler sampler,
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MemoryBufferExtend extend_x, MemoryBufferExtend extend_y)
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{
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if (m_single_value) {
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/* write buffer has a single value stored at (0,0) */
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m_buffer->read(output, 0, 0);
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}
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else if (sampler == COM_PS_NEAREST) {
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m_buffer->read(output, x, y, extend_x, extend_y);
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}
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else {
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m_buffer->readBilinear(output, x, y, extend_x, extend_y);
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}
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}
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void ReadBufferOperation::executePixelFiltered(float output[4], float x, float y, float dx, float dy, PixelSampler sampler)
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{
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if (m_single_value) {
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/* write buffer has a single value stored at (0,0) */
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m_buffer->read(output, 0, 0);
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}
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else {
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m_buffer->readEWA(output, x, y, dx, dy, sampler);
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}
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}
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bool ReadBufferOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
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{
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if (this == readOperation) {
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BLI_rcti_init(output, input->xmin, input->xmax, input->ymin, input->ymax);
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return true;
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}
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return false;
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}
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void ReadBufferOperation::readResolutionFromWriteBuffer()
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{
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if (this->m_memoryProxy != NULL) {
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WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
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this->setWidth(operation->getWidth());
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this->setHeight(operation->getHeight());
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}
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}
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void ReadBufferOperation::updateMemoryBuffer()
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{
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this->m_buffer = this->getMemoryProxy()->getBuffer();
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}
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