1 files changed, 89 insertions, 0 deletions
diff --git a/source/blender/nodes/shader/nodes/node_shader_displacement.cc b/source/blender/nodes/shader/nodes/node_shader_displacement.cc
new file mode 100644
index 00000000000..7c3b5f9f7a9
--- /dev/null
+++ b/source/blender/nodes/shader/nodes/node_shader_displacement.cc
@@ -0,0 +1,89 @@
+/*
+ * 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) 2005 Blender Foundation.
+ * All rights reserved.
+ */
+
+#include "../node_shader_util.h"
+
+namespace blender::nodes::node_shader_displacement_cc {
+
+/* **************** OUTPUT ******************** */
+
+static bNodeSocketTemplate sh_node_displacement_in[] = {
+    {SOCK_FLOAT, N_("Height"), 0.00f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f},
+    {SOCK_FLOAT, N_("Midlevel"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f},
+    {SOCK_FLOAT, N_("Scale"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f},
+    {SOCK_VECTOR, N_("Normal"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
+    {-1, ""},
+};
+
+static bNodeSocketTemplate sh_node_displacement_out[] = {
+    {SOCK_VECTOR, N_("Displacement"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
+    {-1, ""},
+};
+
+static void node_shader_init_displacement(bNodeTree *UNUSED(ntree), bNode *node)
+{
+  node->custom1 = SHD_SPACE_OBJECT; /* space */
+
+  /* Set default value here for backwards compatibility. */
+  LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
+    if (STREQ(sock->name, "Midlevel")) {
+      ((bNodeSocketValueFloat *)sock->default_value)->value = 0.5f;
+    }
+  }
+}
+
+static int gpu_shader_displacement(GPUMaterial *mat,
+                                   bNode *node,
+                                   bNodeExecData *UNUSED(execdata),
+                                   GPUNodeStack *in,
+                                   GPUNodeStack *out)
+{
+  if (!in[3].link) {
+    GPU_link(mat,
+             "direction_transform_m4v3",
+             GPU_builtin(GPU_VIEW_NORMAL),
+             GPU_builtin(GPU_INVERSE_VIEW_MATRIX),
+             &in[3].link);
+  }
+
+  if (node->custom1 == SHD_SPACE_OBJECT) {
+    return GPU_stack_link(
+        mat, node, "node_displacement_object", in, out, GPU_builtin(GPU_OBJECT_MATRIX));
+  }
+
+  return GPU_stack_link(mat, node, "node_displacement_world", in, out);
+}
+
+}  // namespace blender::nodes::node_shader_displacement_cc
+
+/* node type definition */
+void register_node_type_sh_displacement()
+{
+  namespace file_ns = blender::nodes::node_shader_displacement_cc;
+
+  static bNodeType ntype;
+
+  sh_node_type_base(&ntype, SH_NODE_DISPLACEMENT, "Displacement", NODE_CLASS_OP_VECTOR, 0);
+  node_type_socket_templates(
+      &ntype, file_ns::sh_node_displacement_in, file_ns::sh_node_displacement_out);
+  node_type_init(&ntype, file_ns::node_shader_init_displacement);
+  node_type_gpu(&ntype, file_ns::gpu_shader_displacement);
+
+  nodeRegisterType(&ntype);
+}