Autodesk 12812-051462-9011 User Guide 3 - Page 21

5. The checker map displays in viewports, but the bump map does not, by default. 6. Rendering the material shows the full effect of mapping. WARNING When you change the shading type on page 5265 of a standard 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. Map Terminology The term "material map" is sometimes used to describe a map assigned in the material editor. A material map applies a color or pattern to a surface. This is different from maps used for displacement mapping with the Displace modifier on page 1344, environment mapping for backgrounds, or projection mapping from lights. The term "texture map" is sometimes used as well. It is interchangeable with "diffuse map"; that is, with a map that applies colors to geometry, as opposed to a map that create reflections, bumps, and so on. In the Material/Map Browser on page 5290, maps are categorized according to how the map software functions. The categories are: ■ 2D maps A bitmap on page 5795 is the prototypical 2D map. 2D maps apply pictures and patterns to the surface of objects. ■ 3D maps 3D maps are generated procedurally. 3D maps apply patterns throughout an object's geometry. ■ Compositors Compositors combine other maps. ■ Color Modifiers Color modifiers are usually composited with another map to adjust its color. The Vertex Color map is a special case that displays the colors you assign to vertices in a mesh. ■ Other "Other" maps include maps that simulate reflection or refraction. 5276 | Chapter 19 Material Editor, Materials, and Maps