Function Material__sample

tutorials/pathtracer/pathtracer_device.cpp:873–897

}

inline Vec3fa Material__sample(ISPCMaterial** materials, unsigned int materialID, unsigned int numMaterials, const BRDF& brdf, const Vec3fa& Lw, const Vec3fa& wo, const DifferentialGeometry& dg, Sample3f& wi_o, Medium& medium, const Vec2f& s)
{
  Vec3fa c = Vec3fa(0.0f);
  auto id = materialID;
  {
    if (id < numMaterials) // FIXME: workaround for ISPC bug, location reached with empty execution mask
    {
      ISPCMaterial* material = materials[id];
      switch (material->type) {
      case MATERIAL_OBJ  : c = OBJMaterial__sample  ((ISPCOBJMaterial*)  material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_METAL: c = MetalMaterial__sample((ISPCMetalMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_REFLECTIVE_METAL: c = ReflectiveMetalMaterial__sample((ISPCReflectiveMetalMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_VELVET: c = VelvetMaterial__sample((ISPCVelvetMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_DIELECTRIC: c = DielectricMaterial__sample((ISPCDielectricMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_METALLIC_PAINT: c = MetallicPaintMaterial__sample((ISPCMetallicPaintMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_MATTE: c = MatteMaterial__sample((ISPCMatteMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_MIRROR: c = MirrorMaterial__sample((ISPCMirrorMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_THIN_DIELECTRIC: c = ThinDielectricMaterial__sample((ISPCThinDielectricMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      case MATERIAL_HAIR: c = HairMaterial__sample((ISPCHairMaterial*)material, brdf, Lw, wo, dg, wi_o, medium, s); break;
      default: wi_o = make_Sample3f(Vec3fa(0.0f),0.0f); c = Vec3fa(0.0f); break;
      }
    }
  }
  return c;
}


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