Autodesk 12812-051462-9011 User Guide 3 - Page 10

■ Shell on page 5732 Contains a material that has been rendered to a texture on page 6371, as well as the original material upon which the texture is based. ■ Shellac on page 5727 Mixes two materials by applying a "shellac" material to another. ■ Standard on page 5395 Uses surface shaders to simulate materials. In general, the standard material is probably the best choice for a simple material if you choose to use standard light objects. If you use photometric lights, use the default Architectural material. ■ Top/Bottom on page 5729 Contains two materials, one for faces that point upward, the other for faces that point downward. Standard materials let you set values for components such as color, glossiness, and opacity. They also let you apply maps to the components, which can produce an enormous variety of effects. Some other material types have these features as well. Some materials, such as Multi/Sub-Object or Double Sided, have controls only for combining other materials. mental ray Materials A group of materials is provided for use with the mental ray renderer on page 6230. See mental ray Materials on page 5543. Shading Type The Standard and Raytrace materials let you specify a shading type. Shading types are handled by a "shader," which describes how the surface responds to light. WARNING When you change the shading type of a material, you lose the settings (including map assignments) for any parameters that the new shader does not support. If you want to experiment with different shaders for a material with the same general parameters, copy the material to a different sample slot on page 5304 before you change its shading type. That way, you can still use the original material if the new shader doesn't give you the effect you want. Shading Type | 5265