From d10ea97053c5bca605d94ddb09dd2c5934fcccfb Mon Sep 17 00:00:00 2001
From: Aaron Carlisle <Blendify>
Date: Sun, 5 Sep 2021 15:22:30 -0400
Subject: Compositor: New Posterize Node

The posterize node limits the number of colors per channel.
This is useful to generate masks or to generate stylized images

Both the tiled and full-frame implementation are included in this patch

{F10314012}

Reviewed By: manzanilla, jbakker

Differential Revision: https://developer.blender.org/D12304
---
 .../composite/nodes/node_composite_posterize.c     | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 source/blender/nodes/composite/nodes/node_composite_posterize.c

(limited to 'source/blender/nodes/composite')

diff --git a/source/blender/nodes/composite/nodes/node_composite_posterize.c b/source/blender/nodes/composite/nodes/node_composite_posterize.c
new file mode 100644
index 00000000000..5093e581cdc
--- /dev/null
+++ b/source/blender/nodes/composite/nodes/node_composite_posterize.c
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2021 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup cmpnodes
+ */
+
+#include "node_composite_util.h"
+
+/* **************** Posterize ******************** */
+
+static bNodeSocketTemplate cmp_node_posterize_in[] = {
+    {SOCK_RGBA, N_("Image"), 1.0f, 1.0f, 1.0f, 1.0f},
+    {SOCK_FLOAT, N_("Steps"), 8.0f, 8.0f, 8.0f, 8.0f, 2.0f, 1024.0f, PROP_NONE},
+    {-1, ""},
+};
+static bNodeSocketTemplate cmp_node_posterize_out[] = {
+    {SOCK_RGBA, N_("Image")},
+    {-1, ""},
+};
+
+void register_node_type_cmp_posterize(void)
+{
+  static bNodeType ntype;
+
+  cmp_node_type_base(&ntype, CMP_NODE_POSTERIZE, "Posterize", NODE_CLASS_OP_COLOR, 0);
+  node_type_socket_templates(&ntype, cmp_node_posterize_in, cmp_node_posterize_out);
+
+  nodeRegisterType(&ntype);
+}
-- 
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