Diffuse shading is one of the most common looks in rendering .Diffuse and diffuse objects are often dry and unpolished . Think of such as newspaper, dirt, and rocks, and is often the base of many materials.

These objects all reflect light in a wide range of directions from the surface. This means there they won't be shiny or reflective, which requires something like LamaConductor to add shininess and reflectivity.

Diffuse

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Diffuse Parameters

Color

Color is typically where textures or patterns are connected to create color for opaque objects. This is where a wood color texture would go, for example.

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Diffuse roughness is how you would simulate a powdery surface like dried clay or dust.  When roughness is 0.0,  LamaDiffuse uses the Lambertian model to calculate the diffuse response.  When roughness is > 0.0, the Oren Nayar model is used instead.

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