1 files changed, 101 insertions, 0 deletions
diff --git a/source/blender/compositor/nodes/COM_ZCombineNode.cc b/source/blender/compositor/nodes/COM_ZCombineNode.cc
new file mode 100644
index 00000000000..b61c018d029
--- /dev/null
+++ b/source/blender/compositor/nodes/COM_ZCombineNode.cc
@@ -0,0 +1,101 @@
+/*
+ * 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_ZCombineNode.h"
+
+#include "COM_ZCombineOperation.h"
+
+#include "COM_AntiAliasOperation.h"
+#include "COM_ExecutionSystem.h"
+#include "COM_MathBaseOperation.h"
+#include "COM_MixOperation.h"
+#include "COM_SetValueOperation.h"
+
+#include "DNA_material_types.h" /* the ramp types */
+
+void ZCombineNode::convertToOperations(NodeConverter &converter,
+                                       const CompositorContext &context) const
+{
+  if ((context.getRenderData()->scemode & R_FULL_SAMPLE) || this->getbNode()->custom2) {
+    ZCombineOperation *operation = nullptr;
+    if (this->getbNode()->custom1) {
+      operation = new ZCombineAlphaOperation();
+    }
+    else {
+      operation = new ZCombineOperation();
+    }
+    converter.addOperation(operation);
+
+    converter.mapInputSocket(getInputSocket(0), operation->getInputSocket(0));
+    converter.mapInputSocket(getInputSocket(1), operation->getInputSocket(1));
+    converter.mapInputSocket(getInputSocket(2), operation->getInputSocket(2));
+    converter.mapInputSocket(getInputSocket(3), operation->getInputSocket(3));
+    converter.mapOutputSocket(getOutputSocket(0), operation->getOutputSocket());
+
+    MathMinimumOperation *zoperation = new MathMinimumOperation();
+    converter.addOperation(zoperation);
+
+    converter.mapInputSocket(getInputSocket(1), zoperation->getInputSocket(0));
+    converter.mapInputSocket(getInputSocket(3), zoperation->getInputSocket(1));
+    converter.mapOutputSocket(getOutputSocket(1), zoperation->getOutputSocket());
+  }
+  else {
+    /* XXX custom1 is "use_alpha", what on earth is this supposed to do here?!? */
+    // not full anti alias, use masking for Z combine. be aware it uses anti aliasing.
+    // step 1 create mask
+    NodeOperation *maskoperation;
+    if (this->getbNode()->custom1) {
+      maskoperation = new MathGreaterThanOperation();
+      converter.addOperation(maskoperation);
+
+      converter.mapInputSocket(getInputSocket(1), maskoperation->getInputSocket(0));
+      converter.mapInputSocket(getInputSocket(3), maskoperation->getInputSocket(1));
+    }
+    else {
+      maskoperation = new MathLessThanOperation();
+      converter.addOperation(maskoperation);
+
+      converter.mapInputSocket(getInputSocket(1), maskoperation->getInputSocket(0));
+      converter.mapInputSocket(getInputSocket(3), maskoperation->getInputSocket(1));
+    }
+
+    // step 2 anti alias mask bit of an expensive operation, but does the trick
+    AntiAliasOperation *antialiasoperation = new AntiAliasOperation();
+    converter.addOperation(antialiasoperation);
+
+    converter.addLink(maskoperation->getOutputSocket(), antialiasoperation->getInputSocket(0));
+
+    // use mask to blend between the input colors.
+    ZCombineMaskOperation *zcombineoperation = this->getbNode()->custom1 ?
+                                                   new ZCombineMaskAlphaOperation() :
+                                                   new ZCombineMaskOperation();
+    converter.addOperation(zcombineoperation);
+
+    converter.addLink(antialiasoperation->getOutputSocket(), zcombineoperation->getInputSocket(0));
+    converter.mapInputSocket(getInputSocket(0), zcombineoperation->getInputSocket(1));
+    converter.mapInputSocket(getInputSocket(2), zcombineoperation->getInputSocket(2));
+    converter.mapOutputSocket(getOutputSocket(0), zcombineoperation->getOutputSocket());
+
+    MathMinimumOperation *zoperation = new MathMinimumOperation();
+    converter.addOperation(zoperation);
+
+    converter.mapInputSocket(getInputSocket(1), zoperation->getInputSocket(0));
+    converter.mapInputSocket(getInputSocket(3), zoperation->getInputSocket(1));
+    converter.mapOutputSocket(getOutputSocket(1), zoperation->getOutputSocket());
+  }
+}