1 files changed, 39 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_KeyingSetAlphaOperation.h b/source/blender/compositor/operations/COM_KeyingSetAlphaOperation.h
new file mode 100644
index 00000000000..b786240f215
--- /dev/null
+++ b/source/blender/compositor/operations/COM_KeyingSetAlphaOperation.h
@@ -0,0 +1,39 @@
+/*
+ * 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 2020, Blender Foundation.
+ */
+
+#pragma once
+
+#include "COM_NodeOperation.h"
+
+/**
+ * Operation which is used by keying node to modify image's alpha channels.
+ * It keeps color properly pre-multiplied.
+ */
+class KeyingSetAlphaOperation : public NodeOperation {
+ private:
+  SocketReader *m_inputColor;
+  SocketReader *m_inputAlpha;
+
+ public:
+  KeyingSetAlphaOperation();
+
+  void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
+
+  void initExecution();
+  void deinitExecution();
+};