diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_KeyingDespillOperation.cc')
-rw-r--r-- | source/blender/compositor/operations/COM_KeyingDespillOperation.cc | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_KeyingDespillOperation.cc b/source/blender/compositor/operations/COM_KeyingDespillOperation.cc new file mode 100644 index 00000000000..f4d0d6c6a00 --- /dev/null +++ b/source/blender/compositor/operations/COM_KeyingDespillOperation.cc @@ -0,0 +1,81 @@ +/* + * 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 2012, Blender Foundation. + */ + +#include "COM_KeyingDespillOperation.h" + +#include "MEM_guardedalloc.h" + +#include "BLI_listbase.h" +#include "BLI_math.h" + +KeyingDespillOperation::KeyingDespillOperation() +{ + this->addInputSocket(COM_DT_COLOR); + this->addInputSocket(COM_DT_COLOR); + this->addOutputSocket(COM_DT_COLOR); + + this->m_despillFactor = 0.5f; + this->m_colorBalance = 0.5f; + + this->m_pixelReader = nullptr; + this->m_screenReader = nullptr; +} + +void KeyingDespillOperation::initExecution() +{ + this->m_pixelReader = this->getInputSocketReader(0); + this->m_screenReader = this->getInputSocketReader(1); +} + +void KeyingDespillOperation::deinitExecution() +{ + this->m_pixelReader = nullptr; + this->m_screenReader = nullptr; +} + +void KeyingDespillOperation::executePixelSampled(float output[4], + float x, + float y, + PixelSampler sampler) +{ + float pixelColor[4]; + float screenColor[4]; + + this->m_pixelReader->readSampled(pixelColor, x, y, sampler); + this->m_screenReader->readSampled(screenColor, x, y, sampler); + + const int screen_primary_channel = max_axis_v3(screenColor); + const int other_1 = (screen_primary_channel + 1) % 3; + const int other_2 = (screen_primary_channel + 2) % 3; + + const int min_channel = MIN2(other_1, other_2); + const int max_channel = MAX2(other_1, other_2); + + float average_value, amount; + + average_value = this->m_colorBalance * pixelColor[min_channel] + + (1.0f - this->m_colorBalance) * pixelColor[max_channel]; + amount = (pixelColor[screen_primary_channel] - average_value); + + copy_v4_v4(output, pixelColor); + + const float amount_despill = this->m_despillFactor * amount; + if (amount_despill > 0.0f) { + output[screen_primary_channel] = pixelColor[screen_primary_channel] - amount_despill; + } +} |