holzschuchpacanowski.h

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#ifndef _BBM_HOLZSCHUCHPACANOWSKI_H_
#define _BBM_HOLZSCHUCHPACANOWSKI_H_
 
#include "bsdfmodel/microfacet.h"
#include "ndf/epd.h"
#include "maskingshadowing/vanginneken.h"
#include "util/multirange_for.h"
 
#include "precomputed/holzschuchpacanowski/normalization.h"
#include "precomputed/holzschuchpacanowski/convolution.h"
 
/************************************************************************/
/*! \file holzschuchpacanowski.h
 
  \brief The BSDF models from "A two-scale microfacet
  reflectance model combining reflection and diffraction", Holzschuch and
  Pacanowski [2017]: https://doi.org/10.1145/3072959.3073621
 
  The following models are included:
  + epd: a microfacet BSDF based on the exponential power distribution
  + holzschuchpacanowski: the full two-scale model (specular+difraction)
  + ... diffuse variants.... TODO
 
*************************************************************************/
 
namespace bbm {
 
  /**********************************************************************/
  /*! \brief Exponential Power Distribution microfacet model.
 
    This microfacet EPD BSDF does _not_ include the specular albedo term (Eq
    25).
  ***********************************************************************/
  template<typename CONF,
           ndf::epd_normalization NORMALIZATION=ndf::epd_normalization::Compute,
           string_literal NAME="EPD"
           > requires concepts::config<CONF>
    using epd = microfacet<ndf::epd<CONF>,
                           maskingshadowing::vanginneken<CONF>,
                           fresnel::complex<CONF>,
                           microfacet_n::Walter,
                           NAME>;
 
} // end bbm namespace
 
#endif /* _BBM_HOLZSCHUCHPACANOWSKI_H_ */
 
BBM_EXPORT_BSDFMODEL(bbm::epd)