120 lines
4.0 KiB
C++
120 lines
4.0 KiB
C++
/*
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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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* Copyright 2011, Blender Foundation.
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*/
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#include "COM_ConvertDepthToRadiusOperation.h"
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#include "BKE_camera.h"
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#include "BLI_math.h"
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#include "DNA_camera_types.h"
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namespace blender::compositor {
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ConvertDepthToRadiusOperation::ConvertDepthToRadiusOperation()
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{
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this->addInputSocket(DataType::Value);
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this->addOutputSocket(DataType::Value);
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this->m_inputOperation = nullptr;
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this->m_fStop = 128.0f;
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this->m_cameraObject = nullptr;
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this->m_maxRadius = 32.0f;
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this->m_blurPostOperation = nullptr;
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}
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float ConvertDepthToRadiusOperation::determineFocalDistance()
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{
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if (this->m_cameraObject && this->m_cameraObject->type == OB_CAMERA) {
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Camera *camera = (Camera *)this->m_cameraObject->data;
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this->m_cam_lens = camera->lens;
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return BKE_camera_object_dof_distance(this->m_cameraObject);
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}
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return 10.0f;
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}
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void ConvertDepthToRadiusOperation::initExecution()
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{
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float cam_sensor = DEFAULT_SENSOR_WIDTH;
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Camera *camera = nullptr;
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if (this->m_cameraObject && this->m_cameraObject->type == OB_CAMERA) {
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camera = (Camera *)this->m_cameraObject->data;
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cam_sensor = BKE_camera_sensor_size(camera->sensor_fit, camera->sensor_x, camera->sensor_y);
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}
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this->m_inputOperation = this->getInputSocketReader(0);
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float focalDistance = determineFocalDistance();
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if (focalDistance == 0.0f) {
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focalDistance = 1e10f; /* if the dof is 0.0 then set it to be far away */
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}
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this->m_inverseFocalDistance = 1.0f / focalDistance;
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this->m_aspect = (this->getWidth() > this->getHeight()) ?
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(this->getHeight() / (float)this->getWidth()) :
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(this->getWidth() / (float)this->getHeight());
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this->m_aperture = 0.5f * (this->m_cam_lens / (this->m_aspect * cam_sensor)) / this->m_fStop;
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const float minsz = MIN2(getWidth(), getHeight());
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this->m_dof_sp = minsz /
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((cam_sensor / 2.0f) /
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this->m_cam_lens); // <- == aspect * MIN2(img->x, img->y) / tan(0.5f * fov);
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if (this->m_blurPostOperation) {
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m_blurPostOperation->setSigma(MIN2(m_aperture * 128.0f, this->m_maxRadius));
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}
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}
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void ConvertDepthToRadiusOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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float inputValue[4];
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float z;
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float radius;
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this->m_inputOperation->readSampled(inputValue, x, y, sampler);
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z = inputValue[0];
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if (z != 0.0f) {
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float iZ = (1.0f / z);
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/* bug T6656 part 2b, do not re-scale. */
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#if 0
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bcrad = 0.5f * fabs(aperture * (dof_sp * (cam_invfdist - iZ) - 1.0f));
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// scale crad back to original maximum and blend
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crad->rect[px] = bcrad + wts->rect[px] * (scf * crad->rect[px] - bcrad);
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#endif
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radius = 0.5f * fabsf(this->m_aperture *
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(this->m_dof_sp * (this->m_inverseFocalDistance - iZ) - 1.0f));
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/* 'bug' T6615, limit minimum radius to 1 pixel,
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* not really a solution, but somewhat mitigates the problem. */
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if (radius < 0.0f) {
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radius = 0.0f;
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}
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if (radius > this->m_maxRadius) {
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radius = this->m_maxRadius;
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}
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output[0] = radius;
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}
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else {
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output[0] = 0.0f;
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}
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}
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void ConvertDepthToRadiusOperation::deinitExecution()
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{
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this->m_inputOperation = nullptr;
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}
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} // namespace blender::compositor
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