Implements the Fresnel reflectance equation as proposed by Schlick [Comp. Graph. Forum '94]: https://doi.org/10.1111%2F1467-8659.1330233. More...

#include <fresnel_schlick.h>

Public Types
using	parameter_type = PARAM
	Fresnel Parameter Type.

Public Member Functions
	BBM_IMPORT_CONFIG (CONF)

Static Public Member Functions
static constexpr std::decay_t< parameter_type >::type	eval (const parameter_type &param, const Value &cosTheta, Mask mask=true)
	Evaluate Fresnel reflectance.

Detailed Description

template<typename CONF, typename PARAM = ior::reflectance<Value_t<CONF>>>
requires concepts::config<CONF>
struct bbm::fresnel::schlick< CONF, PARAM >

Implements the Fresnel reflectance equation as proposed by Schlick [Comp. Graph. Forum '94]: https://doi.org/10.1111%2F1467-8659.1330233.

Template Parameters

CONF	= bbm configuration

Implements: concepts::fresnel

Member Typedef Documentation

◆ parameter_type

using parameter_type = PARAM

Fresnel Parameter Type.

Member Function Documentation

◆ BBM_IMPORT_CONFIG()

BBM_IMPORT_CONFIG ( CONF )

◆ eval()

static constexpr std::decay_t< parameter_type >::type eval	(	const parameter_type &	param,
		const Value &	cosTheta,
		Mask	mask = `true`
	)

inlinestaticconstexpr

Evaluate Fresnel reflectance.

This method follows Schlick's approximation [Comp. Graph. Forum' 94] of the Fresnel reflectance (https://doi.org/10.1111%2F1467-8659.1330233). The method takes either ior or reflectance (relies on auto-conversion to reflectance), as well as the dot product between view and halfway vector (cosTheta) as input.

Parameters

param	= reflectance at normal incidence
cosTheta	= dot product between view and halfway.
mask	= mask compute lines

Returns: Approximate Fresnel reflectance

The documentation for this struct was generated from the following file:

include/bbm/fresnel_schlick.h

Public Types