node_composite_normal.cc

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/* SPDX-FileCopyrightText: 2006 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "GPU_material.hh"
 
#include "COM_shader_node.hh"
 
#include "node_composite_util.hh"
 
/* **************** NORMAL  ******************** */
 
namespace blender::nodes::node_composite_normal_cc {
 
static void cmp_node_normal_declare(NodeDeclarationBuilder &b)
{
  b.add_input<decl::Vector>("Normal")
      .default_value({0.0f, 0.0f, 1.0f})
      .min(-1.0f)
      .max(1.0f)
      .subtype(PROP_DIRECTION)
      .compositor_domain_priority(0);
  b.add_output<decl::Vector>("Normal")
      .default_value({0.0f, 0.0f, 1.0f})
      .min(-1.0f)
      .max(1.0f)
      .subtype(PROP_DIRECTION);
  b.add_output<decl::Float>("Dot");
}
 
using namespace blender::realtime_compositor;
 
class NormalShaderNode : public ShaderNode {
 public:
  using ShaderNode::ShaderNode;
 
  void compile(GPUMaterial *material) override
  {
    GPUNodeStack *inputs = get_inputs_array();
    GPUNodeStack *outputs = get_outputs_array();
 
    GPU_stack_link(material,
                   &bnode(),
                   "node_composite_normal",
                   inputs,
                   outputs,
                   GPU_uniform(get_vector_value()));
  }
 
  /* The vector value is stored in the default value of the output socket. */
  const float *get_vector_value()
  {
    return node()
        .output_by_identifier("Normal")
        ->default_value_typed<bNodeSocketValueVector>()
        ->value;
  }
};
 
static ShaderNode *get_compositor_shader_node(DNode node)
{
  return new NormalShaderNode(node);
}
 
}  // namespace blender::nodes::node_composite_normal_cc
 
void register_node_type_cmp_normal()
{
  namespace file_ns = blender::nodes::node_composite_normal_cc;
 
  static blender::bke::bNodeType ntype;
 
  cmp_node_type_base(&ntype, CMP_NODE_NORMAL, "Normal", NODE_CLASS_OP_VECTOR);
  ntype.declare = file_ns::cmp_node_normal_declare;
  ntype.get_compositor_shader_node = file_ns::get_compositor_shader_node;
 
  blender::bke::node_register_type(&ntype);
}