diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_ReadBufferOperation.cc')
-rw-r--r-- | source/blender/compositor/operations/COM_ReadBufferOperation.cc | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.cc b/source/blender/compositor/operations/COM_ReadBufferOperation.cc new file mode 100644 index 00000000000..2977e6685d2 --- /dev/null +++ b/source/blender/compositor/operations/COM_ReadBufferOperation.cc @@ -0,0 +1,133 @@ +/* + * 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" + +ReadBufferOperation::ReadBufferOperation(DataType datatype) +{ + this->addOutputSocket(datatype); + this->m_single_value = false; + this->m_offset = 0; + this->m_buffer = nullptr; +} + +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 COM_PS_NEAREST: + m_buffer->read(output, x, y); + break; + case COM_PS_BILINEAR: + default: + m_buffer->readBilinear(output, x, y); + break; + case COM_PS_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 == COM_PS_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(); +} |