Documentation
Documentation
This component is good for representing non-shiny materials. Diffuse uses a Lambertian reflection model where reflected rays are scattered in a random direction across a hemisphere.
There is also a Roughness parameter that uses the Oren-Nayar method for representing rough surfaces made up of microfacets pointing in different directions. To be accurate it predicts reflectance from rough diffuse surfaces for the entire hemisphere of source and sensor directions. The model for this component takes into account complex physical phenomena such as masking, shadowing and interreflections between points on the surface facets. In practical terms increasing the roughness parameter is useful for representing powdery surfaces like rust.
The basic color of the component. This can be a single color value or a texture map.
Input: Map/Color
The 'Roughness' of the Diffuse component is different to the roughness of all the other Iray+ components. Increasing Diffuse roughness makes the surface look powdery or rubbery. In all of the other components the 'Roughness' parameter controls glossy roughness, which affects how blurred the reflections are.
Range: 0.0 - 1.0 or Map
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Gives control over the contribution of the layers to the overall material appearance. A value of 1.0 will completely block any effect of any material layers below. A value of 0.0 will remove any of the layers contribution.
Range: 0.0 - 1.0 or Map
Allows you to set a bump map to simulate surface detail and control the intensity and orientation of the effect
Range: 0.0 - 1.0 or Map
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Base
Coatings
Surface
Decals
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