parameters used to append the right chunks and calculate the PBR shading.
var color: vec4f = vec4(1.0);
let specularColor: vec3f = vec3(1.0);
let specularIntensity: f32 = 1.0;
let metallic: f32 = 0.5;
let roughness: f32 = 0.5;
let emissive: vec3f = vec3(0.0);
let ior: f32 = 1.5;
let transmission: f32 = 0.0;
let dispersion: f32 = 0.0;
let thickness: f32 = 0.0;
let attenuationDistance: f32 = 1.0e38; // Should be infinity or close
let attenuationColor: vec3f = vec3(1.0);
color = getPBR(
normal,
worldPosition,
color,
viewDirection,
metallic,
roughness,
emissive,
specularIntensity,
specularColor,
ior,
transmission,
dispersion,
thickness,
attenuationDistance,
attenuationColor,
);
Shader chunk to add to the head of a fragment shader to be able to use PBR shading.