Nodes: Convert several shader nodes to c++

Also add file namespace

This is needed to use new node APIs

Differential Revision: https://developer.blender.org/D13690

1 files changed, 140 insertions, 0 deletions

diff --git a/source/blender/nodes/shader/nodes/node_shader_normal_map.cc b/source/blender/nodes/shader/nodes/node_shader_normal_map.cc
new file mode 100644
index 00000000000..0899d08f4e1
--- /dev/null
+++ b/source/blender/nodes/shader/nodes/node_shader_normal_map.cc
@@ -0,0 +1,140 @@
+/*
+ * 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_normal_map_cc {
+
+/* **************** OUTPUT ******************** */
+
+static bNodeSocketTemplate sh_node_normal_map_in[] = {
+    {SOCK_FLOAT, N_("Strength"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 10.0f},
+    {SOCK_RGBA, N_("Color"), 0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 1.0f},
+    {-1, ""},
+};
+
+static bNodeSocketTemplate sh_node_normal_map_out[] = {
+    {SOCK_VECTOR, N_("Normal"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
+    {-1, ""},
+};
+
+static void node_shader_init_normal_map(bNodeTree *UNUSED(ntree), bNode *node)
+{
+  NodeShaderNormalMap *attr = MEM_cnew<NodeShaderNormalMap>("NodeShaderNormalMap");
+  node->storage = attr;
+}
+
+static void node_shader_exec_normal_map(void *UNUSED(data),
+                                        int UNUSED(thread),
+                                        bNode *UNUSED(node),
+                                        bNodeExecData *UNUSED(execdata),
+                                        bNodeStack **UNUSED(in),
+                                        bNodeStack **UNUSED(out))
+{
+}
+
+static int gpu_shader_normal_map(GPUMaterial *mat,
+                                 bNode *node,
+                                 bNodeExecData *UNUSED(execdata),
+                                 GPUNodeStack *in,
+                                 GPUNodeStack *out)
+{
+  NodeShaderNormalMap *nm = static_cast<NodeShaderNormalMap *>(node->storage);
+
+  GPUNodeLink *strength;
+  if (in[0].link) {
+    strength = in[0].link;
+  }
+  else if (node->original) {
+    bNodeSocket *socket = static_cast<bNodeSocket *>(BLI_findlink(&node->original->inputs, 0));
+    bNodeSocketValueFloat *socket_data = static_cast<bNodeSocketValueFloat *>(
+        socket->default_value);
+    strength = GPU_uniform(&socket_data->value);
+  }
+  else {
+    strength = GPU_constant(in[0].vec);
+  }
+
+  GPUNodeLink *newnormal;
+  if (in[1].link) {
+    newnormal = in[1].link;
+  }
+  else if (node->original) {
+    bNodeSocket *socket = static_cast<bNodeSocket *>(BLI_findlink(&node->original->inputs, 1));
+    bNodeSocketValueRGBA *socket_data = static_cast<bNodeSocketValueRGBA *>(socket->default_value);
+    newnormal = GPU_uniform(socket_data->value);
+  }
+  else {
+    newnormal = GPU_constant(in[1].vec);
+  }
+
+  const char *color_to_normal_fnc_name = "color_to_normal_new_shading";
+  if (ELEM(nm->space, SHD_SPACE_BLENDER_OBJECT, SHD_SPACE_BLENDER_WORLD)) {
+    color_to_normal_fnc_name = "color_to_blender_normal_new_shading";
+  }
+
+  GPU_link(mat, color_to_normal_fnc_name, newnormal, &newnormal);
+  switch (nm->space) {
+    case SHD_SPACE_TANGENT:
+      GPU_link(mat,
+               "node_normal_map",
+               GPU_builtin(GPU_OBJECT_INFO),
+               GPU_attribute(mat, CD_TANGENT, nm->uv_map),
+               GPU_builtin(GPU_WORLD_NORMAL),
+               newnormal,
+               &newnormal);
+      break;
+    case SHD_SPACE_OBJECT:
+    case SHD_SPACE_BLENDER_OBJECT:
+      GPU_link(
+          mat, "direction_transform_m4v3", newnormal, GPU_builtin(GPU_OBJECT_MATRIX), &newnormal);
+      break;
+    case SHD_SPACE_WORLD:
+    case SHD_SPACE_BLENDER_WORLD:
+      /* Nothing to do. */
+      break;
+  }
+
+  GPUNodeLink *oldnormal = GPU_builtin(GPU_WORLD_NORMAL);
+  GPU_link(mat, "node_normal_map_mix", strength, newnormal, oldnormal, &out[0].link);
+
+  return true;
+}
+
+}  // namespace blender::nodes::node_shader_normal_map_cc
+
+/* node type definition */
+void register_node_type_sh_normal_map()
+{
+  namespace file_ns = blender::nodes::node_shader_normal_map_cc;
+
+  static bNodeType ntype;
+
+  sh_node_type_base(&ntype, SH_NODE_NORMAL_MAP, "Normal Map", NODE_CLASS_OP_VECTOR, 0);
+  node_type_socket_templates(
+      &ntype, file_ns::sh_node_normal_map_in, file_ns::sh_node_normal_map_out);
+  node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
+  node_type_init(&ntype, file_ns::node_shader_init_normal_map);
+  node_type_storage(
+      &ntype, "NodeShaderNormalMap", node_free_standard_storage, node_copy_standard_storage);
+  node_type_gpu(&ntype, file_ns::gpu_shader_normal_map);
+  node_type_exec(&ntype, nullptr, nullptr, file_ns::node_shader_exec_normal_map);
+
+  nodeRegisterType(&ntype);
+}