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Multi-Layer Highlights 1495
Clickthemapbuttontoassignamaptothe
specular level component. See Specular Level
Mapping (page 2–1501).Thisbuttonisashortcut:
you can also assign specular level mapping in the
Maps (page 2–1474) rollout.
Glossiness—Affects the size of the specular
high light. As you increase the value, the highlight
cur ve g rows nar rower and the highlight gets
smaller. Default=25.
Clickthemapbuttontoassignamaptothe
glossiness component. See Glossiness Mapping
(page 2–1502). This button is a shortcut: you can
also assign specular level mapping in the Maps
(page 2–1474) rollout.
Highli ght gra ph—Thiscurveshowstheeffect
of adjusting the values of Specular Level and
Glossiness. As you decrease Glossiness, the curve
grows wider; as you increase Specular Level, the
cur ve g rows taller.
Multi-Layer Highlights
Material Editor > Standard material > Multi-Layer Basic
Parameters rollout > First Specular Layer/Second Specular
Layer groups
Multi-layer highlights consist of two layers, each of
them anisotropic. The hig hlights are transparent
to each other. Where they overlap, the Multi-Layer
shader blends their colors.
Pr ocedur es
To increase or decrease the size of a highlight
(specular ) layer:
• Change the Glossiness value.
ThewidthoftheHighlightcurvesandthe
high lights in the pre view change. At 0%
glossiness, the c urves are at their maximum
width. At 100% glossiness, both curves are
extremely narrow.
To increase or decrease the str ength of a highlight
(specular) layer:
• Change the value of Specular Level.
TheintensityoftheHighlightcurvesand
the highlights in the preview change. At 0%
specular level, there is no highlig ht. At 100%
specular level, the curves are at their maximum
height with no overloading. At values greater
than 100% , the curves are overloaded: they
grow wider, and a wider area is at the maximum
highlight intensity.
TheshapeoftheHighlightcurvesaffectsthe
blending between the specular and diffuse color
regions of the material. The steeper the curve,
the less blend ing there is and the sharper the
edge of the specular highlig ht.
To a djust the sha pe (a nisotropy ) of a highli ght
(specular) layer:
• Change the value of Anis otropy.
The w idth of the white highlight curve and
the highlights in the preview change. At 0%
anisotropy, both highlight curves are the same
and the highlight is circular, as in Blinn and
Phong shading. At 100% anisotropy, the white
highlight curve and the highlights are extremely
narrow.
To adjust the orientation of a highlight (specular )
layer:
• Change t he value of Orientation.
Highlights in the preview show the change in
orientation. The display of the highlight curve
does not change.