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1374 Chapter 16: Material Editor, Materials, and Maps
Raytrace Antialiaser Dialog: Fast
Adaptive Antialiaser
Rendering menu > R ayt racer Settings > Global Raytracer
Settings dialog > Global R ay Antialiaser group > Turn on
global antialiasing. > C h oose Fast Adaptive Antiali aser
from the drop-down list. > ... button
Material Editor > Type button > Material/Map Browser >
Raytrace material > Raytracer Controls rollout > Raytrace d
Reflection and Refraction Antialiaser group (enabled only
if antial iasing is globally enabled) > Choose Fast Adaptive
Antialiaser from the drop-down list. > ... button
Material Editor > Type button > Material/Map Browser >
Raytrace map > Raytracer Parameters rollout > Raytraced
Reflection and Refraction Antialiaser group (enabled only
if antial iasing is globally enabled) > Choose Fast Adaptive
Antialiaser from the drop-down list. > ... button
The Fast Adaptive Antialiaser dialog changes
settings for the Ray trace material and maps Fast
Adaptive antialiaser. You can use this dialog either
globally, from the
Global Rayt racer Settings dialog
(page 2–1369)
,orlocally,fromthe Raytracer
Cont rols rollout (page 2–1362)
.Whenyoulocally
change settings for an antialiaser, you don’t affect
the global settings for that antialiaser.
Inter face
Blur / Defocus (Distance Blur) group
Blur Offset is similar to blur offset for Bitmaps,
while defocus is based on di stance.
Blur Offset—Affectsthesharpnessorblurriness
of the reflections or refractions without regard
to distance. You can use Blur Offset to soften or
defocus the details of a reflection or r efraction.
The value is specified in pixels. Default=0.0.
Tip: The default Blur Offset setting usua lly
produces good results. If you see aliasing in
reflections or refractions, increase its value in
increments of 0.5 until the aliasi ng go es away.
See
Blur/Blur Offset (page 3–1012) .
Blur Aspect—This is an aspect ratio th at changes
the shape of the blur. Usually you will not need to
change it. Default=1.0.
Tip: If you see aliasing that occurs mostly along
horizonta l lines, try increasing Blur Aspect to 1.5.
This changes the shape of the blurred effect. The
reverse is also tr ue. If aliasing occurs mostly along
vertical lines, try decreasing Blur Aspect to 0.5.
Defocusing—Defo cusing is a blur based on
distance. With Defocus, objects near the sur face
are not blurred, but objects farther away are
blurred. The rays cast are spread as they leave the
Ray trace material object’s surface. Default=0.0.
Tip: Increasing the value of Defocusing can g ive a
good distance blurring effect. Small adjustments
are usually adequate. Try starting with a value less
than 0.1, and increase or decrease it as necessary.
Also try adjusting Reflect Falloff in Ray t race
material or Attenuation in Raytrace map to get the
best distance blurri ng effect.
Defocus Aspect—This is an aspect ratio that
changes the shape of the defocusing. Usually you
wi ll not need to change it. Default=1.0.