1 files changed, 126 insertions, 0 deletions

diff --git a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc
new file mode 100644
index 00000000000..425e87ffa7e
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc
@@ -0,0 +1,126 @@
+/*
+ * 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_ConvolutionFilterOperation.h"
+
+#include "BLI_utildefines.h"
+
+#include "MEM_guardedalloc.h"
+
+ConvolutionFilterOperation::ConvolutionFilterOperation()
+{
+  this->addInputSocket(COM_DT_COLOR);
+  this->addInputSocket(COM_DT_VALUE);
+  this->addOutputSocket(COM_DT_COLOR);
+  this->setResolutionInputSocketIndex(0);
+  this->m_inputOperation = nullptr;
+  this->setComplex(true);
+}
+void ConvolutionFilterOperation::initExecution()
+{
+  this->m_inputOperation = this->getInputSocketReader(0);
+  this->m_inputValueOperation = this->getInputSocketReader(1);
+}
+
+void ConvolutionFilterOperation::set3x3Filter(
+    float f1, float f2, float f3, float f4, float f5, float f6, float f7, float f8, float f9)
+{
+  this->m_filter[0] = f1;
+  this->m_filter[1] = f2;
+  this->m_filter[2] = f3;
+  this->m_filter[3] = f4;
+  this->m_filter[4] = f5;
+  this->m_filter[5] = f6;
+  this->m_filter[6] = f7;
+  this->m_filter[7] = f8;
+  this->m_filter[8] = f9;
+  this->m_filterHeight = 3;
+  this->m_filterWidth = 3;
+}
+
+void ConvolutionFilterOperation::deinitExecution()
+{
+  this->m_inputOperation = nullptr;
+  this->m_inputValueOperation = nullptr;
+}
+
+void ConvolutionFilterOperation::executePixel(float output[4], int x, int y, void * /*data*/)
+{
+  float in1[4];
+  float in2[4];
+  int x1 = x - 1;
+  int x2 = x;
+  int x3 = x + 1;
+  int y1 = y - 1;
+  int y2 = y;
+  int y3 = y + 1;
+  CLAMP(x1, 0, getWidth() - 1);
+  CLAMP(x2, 0, getWidth() - 1);
+  CLAMP(x3, 0, getWidth() - 1);
+  CLAMP(y1, 0, getHeight() - 1);
+  CLAMP(y2, 0, getHeight() - 1);
+  CLAMP(y3, 0, getHeight() - 1);
+  float value[4];
+  this->m_inputValueOperation->read(value, x2, y2, nullptr);
+  const float mval = 1.0f - value[0];
+
+  zero_v4(output);
+  this->m_inputOperation->read(in1, x1, y1, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[0]);
+  this->m_inputOperation->read(in1, x2, y1, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[1]);
+  this->m_inputOperation->read(in1, x3, y1, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[2]);
+  this->m_inputOperation->read(in1, x1, y2, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[3]);
+  this->m_inputOperation->read(in2, x2, y2, nullptr);
+  madd_v4_v4fl(output, in2, this->m_filter[4]);
+  this->m_inputOperation->read(in1, x3, y2, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[5]);
+  this->m_inputOperation->read(in1, x1, y3, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[6]);
+  this->m_inputOperation->read(in1, x2, y3, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[7]);
+  this->m_inputOperation->read(in1, x3, y3, nullptr);
+  madd_v4_v4fl(output, in1, this->m_filter[8]);
+
+  output[0] = output[0] * value[0] + in2[0] * mval;
+  output[1] = output[1] * value[0] + in2[1] * mval;
+  output[2] = output[2] * value[0] + in2[2] * mval;
+  output[3] = output[3] * value[0] + in2[3] * mval;
+
+  /* Make sure we don't return negative color. */
+  output[0] = MAX2(output[0], 0.0f);
+  output[1] = MAX2(output[1], 0.0f);
+  output[2] = MAX2(output[2], 0.0f);
+  output[3] = MAX2(output[3], 0.0f);
+}
+
+bool ConvolutionFilterOperation::determineDependingAreaOfInterest(
+    rcti *input, ReadBufferOperation *readOperation, rcti *output)
+{
+  rcti newInput;
+  int addx = (this->m_filterWidth - 1) / 2 + 1;
+  int addy = (this->m_filterHeight - 1) / 2 + 1;
+  newInput.xmax = input->xmax + addx;
+  newInput.xmin = input->xmin - addx;
+  newInput.ymax = input->ymax + addy;
+  newInput.ymin = input->ymin - addy;
+
+  return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}