diff options
Diffstat (limited to 'source/blender/compositor/nodes/COM_CryptomatteNode.cpp')
| -rw-r--r-- | source/blender/compositor/nodes/COM_CryptomatteNode.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/source/blender/compositor/nodes/COM_CryptomatteNode.cpp b/source/blender/compositor/nodes/COM_CryptomatteNode.cpp new file mode 100644 index 00000000000..c8134068543 --- /dev/null +++ b/source/blender/compositor/nodes/COM_CryptomatteNode.cpp @@ -0,0 +1,120 @@ +/* + * Copyright 2018, 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: + * Lukas Stockner + * Stefan Werner + */ + +#include "COM_CryptomatteNode.h" +#include "COM_CryptomatteOperation.h" +#include "COM_SetAlphaOperation.h" +#include "COM_ConvertOperation.h" +#include "BLI_string.h" +#include "BLI_hash_mm3.h" +#include "BLI_assert.h" +#include <iterator> + +CryptomatteNode::CryptomatteNode(bNode *editorNode) : Node(editorNode) +{ + /* pass */ +} + +/* This is taken from the Cryptomatte specification 1.0. */ +static inline float hash_to_float(uint32_t hash) { + uint32_t mantissa = hash & (( 1 << 23) - 1); + uint32_t exponent = (hash >> 23) & ((1 << 8) - 1); + exponent = max(exponent, (uint32_t) 1); + exponent = min(exponent, (uint32_t) 254); + exponent = exponent << 23; + uint32_t sign = (hash >> 31); + sign = sign << 31; + uint32_t float_bits = sign | exponent | mantissa; + float f; + /* Bit casting relies on equal size for both types. */ + BLI_STATIC_ASSERT(sizeof(float) == sizeof(uint32_t), "float and uint32_t are not the same size") + ::memcpy(&f, &float_bits, sizeof(float)); + return f; +} + +void CryptomatteNode::convertToOperations(NodeConverter &converter, const CompositorContext &/*context*/) const +{ + NodeInput *inputSocketImage = this->getInputSocket(0); + NodeOutput *outputSocketImage = this->getOutputSocket(0); + NodeOutput *outputSocketMatte = this->getOutputSocket(1); + NodeOutput *outputSocketPick = this->getOutputSocket(2); + + bNode *node = this->getbNode(); + NodeCryptomatte *cryptoMatteSettings = (NodeCryptomatte *)node->storage; + + CryptomatteOperation *operation = new CryptomatteOperation(getNumberOfInputSockets()-1); + if (cryptoMatteSettings) { + if (cryptoMatteSettings->matte_id) { + /* Split the string by commas, ignoring white space. */ + std::string input = cryptoMatteSettings->matte_id; + std::istringstream ss(input); + while (ss.good()) { + std::string token; + getline(ss, token, ','); + /* Ignore empty tokens. */ + if (token.length() > 0) { + size_t first = token.find_first_not_of(' '); + size_t last = token.find_last_not_of(' '); + if (first == std::string::npos || last == std::string::npos) { + break; + } + token = token.substr(first, (last - first + 1)); + if (*token.begin() == '<' && *(--token.end()) == '>') { + operation->addObjectIndex(atof(token.substr(1, token.length() - 2).c_str())); + } + else { + uint32_t hash = BLI_hash_mm3((const unsigned char*)token.c_str(), token.length(), 0); + operation->addObjectIndex(hash_to_float(hash)); + } + } + } + } + } + + converter.addOperation(operation); + + for (int i = 0; i < getNumberOfInputSockets()-1; ++i) { + converter.mapInputSocket(this->getInputSocket(i + 1), operation->getInputSocket(i)); + } + + SeparateChannelOperation *separateOperation = new SeparateChannelOperation; + separateOperation->setChannel(3); + converter.addOperation(separateOperation); + + SetAlphaOperation *operationAlpha = new SetAlphaOperation(); + converter.addOperation(operationAlpha); + + converter.addLink(operation->getOutputSocket(0), separateOperation->getInputSocket(0)); + converter.addLink(separateOperation->getOutputSocket(0), operationAlpha->getInputSocket(1)); + + SetAlphaOperation *clearAlphaOperation = new SetAlphaOperation(); + converter.addOperation(clearAlphaOperation); + converter.addInputValue(clearAlphaOperation->getInputSocket(1), 1.0f); + + converter.addLink(operation->getOutputSocket(0), clearAlphaOperation->getInputSocket(0)); + + converter.mapInputSocket(inputSocketImage, operationAlpha->getInputSocket(0)); + converter.mapOutputSocket(outputSocketMatte, separateOperation->getOutputSocket(0)); + converter.mapOutputSocket(outputSocketImage, operationAlpha->getOutputSocket(0)); + converter.mapOutputSocket(outputSocketPick, clearAlphaOperation->getOutputSocket(0)); + +} |