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, 78 insertions, 0 deletions

diff --git a/source/blender/nodes/shader/nodes/node_shader_wavelength.cc b/source/blender/nodes/shader/nodes/node_shader_wavelength.cc
new file mode 100644
index 00000000000..5acb553ea00
--- /dev/null
+++ b/source/blender/nodes/shader/nodes/node_shader_wavelength.cc
@@ -0,0 +1,78 @@
+/*
+ * 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_wavelength_cc {
+
+/* **************** Wavelength ******************** */
+static bNodeSocketTemplate sh_node_wavelength_in[] = {
+    {SOCK_FLOAT, N_("Wavelength"), 500.0f, 0.0f, 0.0f, 0.0f, 380.0f, 780.0f},
+    {-1, ""},
+};
+
+static bNodeSocketTemplate sh_node_wavelength_out[] = {
+    {SOCK_RGBA, N_("Color")},
+    {-1, ""},
+};
+
+static int node_shader_gpu_wavelength(GPUMaterial *mat,
+                                      bNode *node,
+                                      bNodeExecData *UNUSED(execdata),
+                                      GPUNodeStack *in,
+                                      GPUNodeStack *out)
+{
+  const int size = CM_TABLE + 1;
+  float *data = static_cast<float *>(MEM_mallocN(sizeof(float) * size * 4, "cie_xyz texture"));
+
+  wavelength_to_xyz_table(data, size);
+
+  float layer;
+  GPUNodeLink *ramp_texture = GPU_color_band(mat, size, data, &layer);
+  XYZ_to_RGB xyz_to_rgb;
+  get_XYZ_to_RGB_for_gpu(&xyz_to_rgb);
+  return GPU_stack_link(mat,
+                        node,
+                        "node_wavelength",
+                        in,
+                        out,
+                        ramp_texture,
+                        GPU_constant(&layer),
+                        GPU_uniform(xyz_to_rgb.r),
+                        GPU_uniform(xyz_to_rgb.g),
+                        GPU_uniform(xyz_to_rgb.b));
+}
+
+}  // namespace blender::nodes::node_shader_wavelength_cc
+
+/* node type definition */
+void register_node_type_sh_wavelength()
+{
+  namespace file_ns = blender::nodes::node_shader_wavelength_cc;
+
+  static bNodeType ntype;
+
+  sh_node_type_base(&ntype, SH_NODE_WAVELENGTH, "Wavelength", NODE_CLASS_CONVERTER, 0);
+  node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
+  node_type_socket_templates(
+      &ntype, file_ns::sh_node_wavelength_in, file_ns::sh_node_wavelength_out);
+  node_type_gpu(&ntype, file_ns::node_shader_gpu_wavelength);
+
+  nodeRegisterType(&ntype);
+}