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 Surface shading

Shading

Swatch rendering for any renderer
 
                
               
             
             
            
            Surface texture
          
       
       
       
       
      In
         visual arts, a texture is any kind of surface detail, both visual
         and tactile. In Maya, you create surface detail with textures connected
         to the material of objects as texture maps. (Materials define a
         the basic substance of an object; see 
                  Surface shading for
         more details.)
      
      For more information
         on texture maps, see 
                  Texture mapping.
      
      Factors beyond basic
         color, transparency, and shine (see below) that determine the appearance
         of an object’s surface include: 
      
      
      You can also bake illumination
         and color to a texture that you can later apply to objects in a
         scene. See 
                  Baking illumination and color.
      
      Color 
         
         You can work with color in Maya in so many different
            ways. Here are some of the most common: 
         
         
            - Change the basic color of an object by
               adjusting the color attribute of a material applied to the object.
               To find out more about material node attributes, see 
                        Render node attributes. 
            
- Apply a texture as a color map to the
               material’s color attribute. 
               
            
- Use a Ramp Shader for
               extra control over the way color changes with light and view angle.
               You can simulate a variety of exotic materials and tweak traditional
               shading in subtle ways. For a description of the Ramp
                  Shader, see 
                        Ramp Shader.
            
- Expand, enhance, or manipulate colors
               in applied textures using the Color utilities.
               For example, you can blend colors, adjust contrast, and convert HSV
               to RGB. For a description of each of the color utilities and what
               you can use them for, see 
                        About Color Utilities.
            
Transparency
         
         You can work with the transparency
            of an object in the following ways:
         
         
            - Change the transparency level of an object
               adjusting the transparency attribute of a material applied to the
               object. To find out more about material node attributes, see 
                        Render node attributes. 
            
- Apply a texture as a transparency map
               to the material’s transparency attribute to designate which areas
               of an object are opaque, transparent or semi-transparent. 
               
            
Specular highlight (shine)
         
         You can work with the
            shininess of objects in your scene in the following ways: 
         
         
            - Change the intensity and size of the
               specular highlights of an object by adjusting the Specular
                  Shading attributes of a material applied to the object.
               To find out more about material node attributes, see 
                        Render node attributes and 
                        Common surface material Specular Shading attributes. 
            
- Apply a texture as a specularity map
               to the material’s Specular Color attribute to
               designate which areas of an object shine (and the color of the highlights). 
               
                  - For more information about texture mapping,
                     see 
                              Texture mapping.
                  
- To map a 2D or 3D texture, see 
                              Texture mapping.
                     NoteOnly materials with
                           specular attributes ( Anisotropic,  Blinn,  Phong, and  PhongE)
                           have surface highlights. The  specular highlight is
                           the white shiny glow on the material. 
 
 
What are specular highlights?
         
         Some surfaces are shinier
            than others (for example a wet fish has a shinier surface than a
            dry leaf). Depending on how shiny a surface is, it reflects light in
            different ways. 
         
         Shiny objects reflect
            light directly; matte objects diffuse light. Specular highlights
            show the places on the object where the light sources are reflected
            at consistent angles; reflections on an object show, among other
            things, light bounced from surrounding objects.
         
         Specular highlights depend
            directly on the view (camera), not the position of the light, like
            diffuse shading does. 
         
         TipThe Blinn material
               is recommended for shiny surfaces in animations. Highlights on other
               specular materials, like Phong and PhongE,
               may flicker when animated.
            
         Highlights
            
            The size of a specular
               highlight on a surface makes the surface look either flat or shiny. 
            
         Highlight color
            
            You
               can control the color of highlights on surfaces. 
            
         Reflections
            
            You
               can control the degree of reflectivity as well as other surface
               properties like refracted color.