9

1716 Chapter 16: Material Editor, Materials, and Maps
and assign the map or shader. Use t he toggle at the
left to turn the effect of the map off or on.
The button to the right of each main shader
button is for shaders that can return multiple
parameters. If a shader that returns multiple
parameters is assigned to the component, the
button’s tooltip shows the parameter name.
Clicking the button displays a Connect Par ameter
To Shader dialog (page 2–1713),whichletsyou
change which parameter is b eing used.
Impor tant: UV Coordinate (page 2–1728) and XYZ
Coordinate (page 2–1730) are the only shaders w ith
multiple return values provided with 3ds Max. You might
encounter multiple return values in shaders provided
with other shader libraries or custom shader code.
B ump Sha der (menta l r a y )
Material Editor > mental ray material > Cli ck the bu tton
for the Surface or Bump component. > Material/Map
Browser > Bump (3dsmax)
Note: Shaders appear in the Browser only if the mental
ray renderer is the cur rently active renderer.
The Bump shader provides bump mapping for
the mental ray renderer. Bumps are created
by perturbing face normals before the object
is rendered, using the same method as bump
mapping (page 2–1506) for the scanline renderer.
Wa rning: Although you can assign a Bump shader
to the Surface component, if you assign only aBump
shader, the surface will render as black. For the Surface
component, use the Bump shader in a Shader List (page
2–1723),orforthemental ray material (page 2–1544),use
the Bump component itself.
Interfa ce
Bump (3dsmax) Parameters rollout
Multiplier—Adjust the bump effect by multiplying
the map values. Negative Multiplier values reverse
the bump effect: hollow areas now protrude, and
raised areas become hollow. Default=1.0.
Map—Click to display the Material/Map Browser
(page 2–1412) and choose a map to use for
generating bumps. Bump mapping uses the
intensity of the map to affect the surface of t he
material. The intensity affects the apparent
bumpiness of the surface: white areas protrude,
and black areas recede.
Shaders rollo ut
Thecontrolsonthisrolloutletyouassigna
map or shader to the Multiplier parameter.
Click the button for a component to displa y the
Material/Map Browser (page 2–1412) and assign
the map or shader. Use the toggle at the left to turn
the effect of the m ap off or on.
The button to the right of the main shader
button is for shaders that can return multiple
parameters. If a shader that returns multiple
parameters is assigned to the component, the
button’s tooltip shows the parameter name.
Clicking the button displays a Connect Parameter
To Shader dialog (page 2–1713) ,whichletsyou
change which p ar ameter is being used.
Impor tant: UV Coordinate (page 2–1728) and XYZ
Coordinate (page 2–1730) are the only shader s with
multiple return values provided with 3ds Max. You might