/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
 *
 * SPDX-License-Identifier: Apache-2.0 */

#include "node_fresnel.h"
#include "stdcycles.h"

shader node_sheen_bsdf(color Color = 0.8,
                       string distribution = "microfiber",
                       float Roughness = 0.0,
                       normal Normal = N,
                       output closure color BSDF = 0)
{
  float roughness = clamp(Roughness, 0.0, 1.0);

  if (distribution == "ashikhmin")
    BSDF = Color * ashikhmin_velvet(Normal, roughness);
  else if (distribution == "microfiber")
    BSDF = Color * sheen(Normal, roughness);
}
