Simplified PBRT Specification

bprt_simplified_spec.txt

Utilities used by the BxDFs:

Fresnel functions:
	FresnelDielectric( iorI, iorT )
	FresnelConductor( iorI, iorT, kappa )
	FresnelNoOp()

Microfacet distributions:
	BeckmannDistribution ( uRoughness, vRoughness );
 	TrowbridgeReitzDistribution( uRoughness, vRoughness )

 

List of all BxDFs used by PBRT:

Diffuse BxDFs:
	OrenNayarReflection( diffuse )
	LambertianReflection( diffuse )
	LambertianTransmission( diffuse )

Fresnel BxDFs:
	FresnelSpecular( reflectance, transmittance, iorI, iorT )
	FresnelBlend( diffuse, specular, microfacetDistribution )

Perfect Specular BxDFs:
	SpecularReflection( reflectance, fresnel ) // perfect specular
	SpecularTransmission( transmittance, iorI, iorT )

Microfacet Specular BxDFs:
	MicrofacetReflection( reflectance, microfacetDistribution, fresnel ) -> equivalent to VRay Reflection
	MicrofacetTransmission( reflectance, microfacetDistribution, iorI, iorT ) -> equivalent to VRay Refraction

Hair BxDFs:
	KayijaKay( diffuse, specular, roughness )

Utility BxDFs:
	ScaledBxDF( bsdf, color )
	FourierBSDF( table );

Subsurface BxDFs:
	TabulatedBSSRDF( mode, ior, sigmaA, sigmaB )