/* SPDX-FileCopyrightText: 2005 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

#include "node_shader_util.hh"

#include "UI_interface_layout.hh"
#include "UI_resources.hh"

namespace blender {

namespace nodes::node_shader_bsdf_toon_cc {

static void node_declare(NodeDeclarationBuilder &b)
{
  const bNodeTree *ntree = b.tree_or_null();
  const bool is_gpu_internal = ntree && (ntree->flag & NTREE_IS_GPU_SHADER_INTERNAL);

  b.add_input<decl::Color>("Color"_ustr).default_value({0.8f, 0.8f, 0.8f, 1.0f});
  b.add_input<decl::Float>("Size"_ustr)
      .default_value(0.5f)
      .min(0.0f)
      .max(1.0f)
      .subtype(PROP_FACTOR);
  b.add_input<decl::Float>("Smooth"_ustr)
      .default_value(0.0f)
      .min(0.0f)
      .max(1.0f)
      .subtype(PROP_FACTOR);
  b.add_input<decl::Vector>("Normal"_ustr).hide_value();
  b.add_input<decl::Float>("Weight"_ustr).available(is_gpu_internal);
  b.add_output<decl::Shader>("BSDF"_ustr);
}

static void node_shader_buts_toon(ui::Layout &layout, bContext * /*C*/, PointerRNA *ptr)
{
  layout.prop(ptr, "component", ui::ITEM_R_SPLIT_EMPTY_NAME, "", ICON_NONE);
}

static int node_shader_gpu_bsdf_toon(GPUMaterial *mat,
                                     bNode *node,
                                     bNodeExecData * /*execdata*/,
                                     GPUNodeStack *in,
                                     GPUNodeStack *out)
{
  if (!in[3].link) {
    GPU_link(mat, "world_normals_get", &in[3].link);
  }

  GPU_material_flag_set(mat, GPU_MATFLAG_DIFFUSE);

  return GPU_stack_link(mat, node, "node_bsdf_toon", in, out);
}

}  // namespace nodes::node_shader_bsdf_toon_cc

/* node type definition */
void register_node_type_sh_bsdf_toon()
{
  namespace file_ns = nodes::node_shader_bsdf_toon_cc;

  static bke::bNodeType ntype;

  sh_node_type_base(&ntype, "ShaderNodeBsdfToon"_ustr, SH_NODE_BSDF_TOON);
  ntype.ui_name = "Toon BSDF";
  ntype.ui_description = "Diffuse and Glossy shaders with cartoon light effects";
  ntype.enum_name_legacy = "BSDF_TOON";
  ntype.nclass = NODE_CLASS_SHADER;
  ntype.declare = file_ns::node_declare;
  ntype.gather_link_search_ops = search_link_ops_for_shader_bsdf_node;
  ntype.add_ui_poll = object_cycles_shader_nodes_poll;
  ntype.draw_buttons = file_ns::node_shader_buts_toon;
  ntype.default_width = bke::NodeWidth::_160;
  ntype.gpu_fn = file_ns::node_shader_gpu_bsdf_toon;

  bke::node_register_type(ntype);
}

}  // namespace blender
