TSL Docs

PhysicalLightingModel

Last modified: Nov 28, 2025

Represents the lighting model for a PBR material.

Constructor

new PhysicalLightingModel(clearcoat?, sheen?, iridescence?, anisotropy?, transmission?, dispersion?)

Parameter	Type	Default Value
clearcoat?	`boolean`	`false`
sheen?	`boolean`	`false`
iridescence?	`boolean`	`false`
anisotropy?	`boolean`	`false`
transmission?	`boolean`	`false`
dispersion?	`boolean`	`false`

Constructs a new physical lighting model.

Method Type Modifiers

start (builder: NodeBuilder) => void —

Depending on what features are requested, the method prepares certain node variables which are later used for lighting computations.

Parameter	Type	Default Value
builder	`NodeBuilder`	—

Returns

void

computeMultiscattering (singleScatter: any, multiScatter: any, specularF90: any, f0: any, iridescenceF0?: null) => void —

Parameter	Type	Default Value
singleScatter	`any`	—
multiScatter	`any`	—
specularF90	`any`	—
f0	`any`	—
iridescenceF0?	`null`	`null`

Returns

void

direct ({ lightDirection, lightColor, reflectedLight }: Object) => void —

Implements the direct light.

Parameter	Type	Default Value
{ lightDirection, lightColor, reflectedLight }	`Object`	—

Returns

void

directRectArea ({ lightColor, lightPosition, halfWidth, halfHeight, reflectedLight, ltc_1, ltc_2 }: Object) => void —

This method is intended for implementing the direct light term for rect area light nodes.

Parameter	Type	Default Value
{ lightColor, lightPosition, halfWidth, halfHeight, reflectedLight, ltc_1, ltc_2 }	`Object`	—

Returns

void

indirect (builder: NodeBuilder) => void —

Implements the indirect lighting.

Parameter	Type	Default Value
builder	`NodeBuilder`	—

Returns

void

indirectDiffuse (builder: NodeBuilder) => void —

Implements the indirect diffuse term.

Parameter	Type	Default Value
builder	`NodeBuilder`	—

Returns

void

indirectSpecular (builder: NodeBuilder) => void —

Implements the indirect specular term.

Parameter	Type	Default Value
builder	`NodeBuilder`	—

Returns

void

ambientOcclusion (builder: NodeBuilder) => void —

Implements the ambient occlusion term.

Parameter	Type	Default Value
builder	`NodeBuilder`	—

Returns

void

finish ({ context }: NodeBuilder) => void —

Used for final lighting accumulations depending on the requested features.

Parameter	Type	Default Value
{ context }	`NodeBuilder`	—

Returns

void

Extends

LightingModel