Function Material__eval

tutorials/pathtracer/pathtracer_device.cpp:847–871

}

inline Vec3fa Material__eval(ISPCMaterial** materials, unsigned int materialID, unsigned int numMaterials, const BRDF& brdf, const Vec3fa& wo, const DifferentialGeometry& dg, const Vec3fa& wi)
{
  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__eval  ((ISPCOBJMaterial*)  material, brdf, wo, dg, wi); break;
      case MATERIAL_METAL: c = MetalMaterial__eval((ISPCMetalMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_REFLECTIVE_METAL: c = ReflectiveMetalMaterial__eval((ISPCReflectiveMetalMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_VELVET: c = VelvetMaterial__eval((ISPCVelvetMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_DIELECTRIC: c = DielectricMaterial__eval((ISPCDielectricMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_METALLIC_PAINT: c = MetallicPaintMaterial__eval((ISPCMetallicPaintMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_MATTE: c = MatteMaterial__eval((ISPCMatteMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_MIRROR: c = MirrorMaterial__eval((ISPCMirrorMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_THIN_DIELECTRIC: c = ThinDielectricMaterial__eval((ISPCThinDielectricMaterial*)material, brdf, wo, dg, wi); break;
      case MATERIAL_HAIR: c = HairMaterial__eval((ISPCHairMaterial*)material, brdf, wo, dg, wi); break;
      default: c = Vec3fa(0.0f);
      }
    }
  }
  return c;
}

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)
{