1 files changed, 153 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ColorCurveOperation.cc b/source/blender/compositor/operations/COM_ColorCurveOperation.cc
new file mode 100644
index 00000000000..ed107a88953
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ColorCurveOperation.cc
@@ -0,0 +1,153 @@
+/*
+ * 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_ColorCurveOperation.h"
+
+#include "BKE_colortools.h"
+
+#include "MEM_guardedalloc.h"
+
+ColorCurveOperation::ColorCurveOperation()
+{
+  this->addInputSocket(COM_DT_VALUE);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addOutputSocket(COM_DT_COLOR);
+
+  this->m_inputFacProgram = nullptr;
+  this->m_inputImageProgram = nullptr;
+  this->m_inputBlackProgram = nullptr;
+  this->m_inputWhiteProgram = nullptr;
+
+  this->setResolutionInputSocketIndex(1);
+}
+void ColorCurveOperation::initExecution()
+{
+  CurveBaseOperation::initExecution();
+  this->m_inputFacProgram = this->getInputSocketReader(0);
+  this->m_inputImageProgram = this->getInputSocketReader(1);
+  this->m_inputBlackProgram = this->getInputSocketReader(2);
+  this->m_inputWhiteProgram = this->getInputSocketReader(3);
+
+  BKE_curvemapping_premultiply(this->m_curveMapping, 0);
+}
+
+void ColorCurveOperation::executePixelSampled(float output[4],
+                                              float x,
+                                              float y,
+                                              PixelSampler sampler)
+{
+  CurveMapping *cumap = this->m_curveMapping;
+
+  float fac[4];
+  float image[4];
+
+  /* local versions of cumap->black, cumap->white, cumap->bwmul */
+  float black[4];
+  float white[4];
+  float bwmul[3];
+
+  this->m_inputBlackProgram->readSampled(black, x, y, sampler);
+  this->m_inputWhiteProgram->readSampled(white, x, y, sampler);
+
+  /* get our own local bwmul value,
+   * since we can't be threadsafe and use cumap->bwmul & friends */
+  BKE_curvemapping_set_black_white_ex(black, white, bwmul);
+
+  this->m_inputFacProgram->readSampled(fac, x, y, sampler);
+  this->m_inputImageProgram->readSampled(image, x, y, sampler);
+
+  if (*fac >= 1.0f) {
+    BKE_curvemapping_evaluate_premulRGBF_ex(cumap, output, image, black, bwmul);
+  }
+  else if (*fac <= 0.0f) {
+    copy_v3_v3(output, image);
+  }
+  else {
+    float col[4];
+    BKE_curvemapping_evaluate_premulRGBF_ex(cumap, col, image, black, bwmul);
+    interp_v3_v3v3(output, image, col, *fac);
+  }
+  output[3] = image[3];
+}
+
+void ColorCurveOperation::deinitExecution()
+{
+  CurveBaseOperation::deinitExecution();
+  this->m_inputFacProgram = nullptr;
+  this->m_inputImageProgram = nullptr;
+  this->m_inputBlackProgram = nullptr;
+  this->m_inputWhiteProgram = nullptr;
+}
+
+// Constant level curve mapping
+
+ConstantLevelColorCurveOperation::ConstantLevelColorCurveOperation()
+{
+  this->addInputSocket(COM_DT_VALUE);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addOutputSocket(COM_DT_COLOR);
+
+  this->m_inputFacProgram = nullptr;
+  this->m_inputImageProgram = nullptr;
+
+  this->setResolutionInputSocketIndex(1);
+}
+void ConstantLevelColorCurveOperation::initExecution()
+{
+  CurveBaseOperation::initExecution();
+  this->m_inputFacProgram = this->getInputSocketReader(0);
+  this->m_inputImageProgram = this->getInputSocketReader(1);
+
+  BKE_curvemapping_premultiply(this->m_curveMapping, 0);
+
+  BKE_curvemapping_set_black_white(this->m_curveMapping, this->m_black, this->m_white);
+}
+
+void ConstantLevelColorCurveOperation::executePixelSampled(float output[4],
+                                                           float x,
+                                                           float y,
+                                                           PixelSampler sampler)
+{
+  float fac[4];
+  float image[4];
+
+  this->m_inputFacProgram->readSampled(fac, x, y, sampler);
+  this->m_inputImageProgram->readSampled(image, x, y, sampler);
+
+  if (*fac >= 1.0f) {
+    BKE_curvemapping_evaluate_premulRGBF(this->m_curveMapping, output, image);
+  }
+  else if (*fac <= 0.0f) {
+    copy_v3_v3(output, image);
+  }
+  else {
+    float col[4];
+    BKE_curvemapping_evaluate_premulRGBF(this->m_curveMapping, col, image);
+    interp_v3_v3v3(output, image, col, *fac);
+  }
+  output[3] = image[3];
+}
+
+void ConstantLevelColorCurveOperation::deinitExecution()
+{
+  CurveBaseOperation::deinitExecution();
+  this->m_inputFacProgram = nullptr;
+  this->m_inputImageProgram = nullptr;
+}