Lambert Diffuse VEX node

Generates a color using the Lambert diffuse lighting model calculation.

All

Inputs

Outputs

This vop uses the Lambert lighting model calculation to generate the diffuse color contribution for a material. Typically its color is the main surface color of the material. This lighting model is often used as base for materials where specular is added.

Inputs

nN	The normal vector is used in the Lambert diffuse calculation. The normal should be normalized if explicitly connected as an input, and front-face calculation is optional but recommended. Implicitly, the normalized global variable, N, is used.
nI	The incidence direction ray used in the face forward calculation. The incident vector should be normalized if explicitly connected as an input. Implicitly, the normalized global variable, I, is used.
Kd	The diffuse intensity. A floating point value used to darken or lighten diffuse contribution.
diff	The diffuse color. This color is most often the main surface color of the material.
facefwd	This toggle will change the normal to face forward towards the camera. It is recommended this toggle be on.

Outputs

color

The Lambert diffuse color contribution

Kd * diff * diffuse(nN);

illum

Just Lambert diffuse lighting without the multiplication by the diffuse

intensity or the diffuse color. Usually used as an export parameter for extra images planes used in the composite.

bsdf

The PBR diffuse calculation.

Usages in other examples

Example name	Example for
Fire Pit example	Material shader	Load \| Launch
Down Hill Lava Flow	Material shader	Load \| Launch
FurBallWorkflow	Fur surface node	Load \| Launch
FurTextureMap	Fur surface node	Load \| Launch