/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2005 Blender Foundation. All rights reserved. */

#include "node_shader_util.hh"

#include "UI_interface.h"
#include "UI_resources.h"

namespace blender::nodes::node_shader_bsdf_hair_cc {

static void node_declare(NodeDeclarationBuilder &b)
{
  b.add_input<decl::Color>(N_("Color")).default_value({0.8f, 0.8f, 0.8f, 1.0f});
  b.add_input<decl::Float>(N_("Offset"))
      .default_value(0.0f)
      .min(-M_PI_2)
      .max(M_PI_2)
      .subtype(PROP_ANGLE);
  b.add_input<decl::Float>(N_("RoughnessU"))
      .default_value(0.1f)
      .min(0.0f)
      .max(1.0f)
      .subtype(PROP_FACTOR);
  b.add_input<decl::Float>(N_("RoughnessV"))
      .default_value(1.0f)
      .min(0.0f)
      .max(1.0f)
      .subtype(PROP_FACTOR);
  b.add_input<decl::Vector>(N_("Tangent")).hide_value();
  b.add_input<decl::Float>(N_("Weight")).unavailable();
  b.add_output<decl::Shader>(N_("BSDF"));
}

static void node_shader_buts_hair(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)
{
  uiItemR(layout, ptr, "component", UI_ITEM_R_SPLIT_EMPTY_NAME, "", ICON_NONE);
}

static int node_shader_gpu_bsdf_hair(GPUMaterial *mat,
                                     bNode *node,
                                     bNodeExecData * /*execdata*/,
                                     GPUNodeStack *in,
                                     GPUNodeStack *out)
{
  return GPU_stack_link(mat, node, "node_bsdf_hair", in, out);
}

}  // namespace blender::nodes::node_shader_bsdf_hair_cc

/* node type definition */
void register_node_type_sh_bsdf_hair()
{
  namespace file_ns = blender::nodes::node_shader_bsdf_hair_cc;

  static bNodeType ntype;

  sh_node_type_base(&ntype, SH_NODE_BSDF_HAIR, "Hair BSDF", NODE_CLASS_SHADER);
  ntype.declare = file_ns::node_declare;
  ntype.draw_buttons = file_ns::node_shader_buts_hair;
  node_type_size(&ntype, 150, 60, 200);
  ntype.gpu_fn = file_ns::node_shader_gpu_bsdf_hair;

  nodeRegisterType(&ntype);
}