1 files changed, 69 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GlareThresholdOperation.cc b/source/blender/compositor/operations/COM_GlareThresholdOperation.cc
new file mode 100644
index 00000000000..cfa4b99cd70
--- /dev/null
+++ b/source/blender/compositor/operations/COM_GlareThresholdOperation.cc
@@ -0,0 +1,69 @@
+/*
+ * 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_GlareThresholdOperation.h"
+#include "BLI_math.h"
+
+#include "IMB_colormanagement.h"
+
+GlareThresholdOperation::GlareThresholdOperation()
+{
+  this->addInputSocket(COM_DT_COLOR, COM_SC_FIT);
+  this->addOutputSocket(COM_DT_COLOR);
+  this->m_inputProgram = nullptr;
+}
+
+void GlareThresholdOperation::determineResolution(unsigned int resolution[2],
+                                                  unsigned int preferredResolution[2])
+{
+  NodeOperation::determineResolution(resolution, preferredResolution);
+  resolution[0] = resolution[0] / (1 << this->m_settings->quality);
+  resolution[1] = resolution[1] / (1 << this->m_settings->quality);
+}
+
+void GlareThresholdOperation::initExecution()
+{
+  this->m_inputProgram = this->getInputSocketReader(0);
+}
+
+void GlareThresholdOperation::executePixelSampled(float output[4],
+                                                  float x,
+                                                  float y,
+                                                  PixelSampler sampler)
+{
+  const float threshold = this->m_settings->threshold;
+
+  this->m_inputProgram->readSampled(output, x, y, sampler);
+  if (IMB_colormanagement_get_luminance(output) >= threshold) {
+    output[0] -= threshold;
+    output[1] -= threshold;
+    output[2] -= threshold;
+
+    output[0] = MAX2(output[0], 0.0f);
+    output[1] = MAX2(output[1], 0.0f);
+    output[2] = MAX2(output[2], 0.0f);
+  }
+  else {
+    zero_v3(output);
+  }
+}
+
+void GlareThresholdOperation::deinitExecution()
+{
+  this->m_inputProgram = nullptr;
+}