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Raytrace Antialiaser Dialog: Fast Adaptive Antialiaser 1533
Raytrace Antialiaser Dialog: Fast
Adaptive Antialiaser
Rendering men u > Rayt racer Settings > Global Raytracer
Settings dialog > Global Ray Antialiaser group > Turn on
global antialiasing. > Choose Fast Adaptive Antialiaser
from the drop-down list. > ... button
Material Editor > Type b utton > M aterial/Map Browser >
Raytrace material > Raytracer Controls rollout > Raytraced
Reflection and Refraction Antialiaser group (enabled only
if antialiasing is globally enabled) > Choose Fast Adaptive
Antialiaser from the drop-down list. > ... button
Material Editor > Type b utton > M aterial/Map Browser >
Raytrace map > Raytracer Parameters rollout > Raytraced
Reflection and Refraction Antialiaser group (enabled only
if antialiasing 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 Raytracer Settings dialog
(page 2–1528),orlocally,fromtheRaytracer
Controls rollout (page 2–1521).Whenyoulocally
change settings for an antialiaser, you don’t affect
the global settings for that antialiaser.
Inter face
Blur / Defocus (Distance B lur) group
Blur O ffset is simi lar to blur offset for Bitmaps,
while defocus is based on distance.
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 refraction.
The value is specified in pixels. Default=0.0.
Tip: The default Blur Offset setting usually
produces good results. If you see aliasing in
reflections or refractions, increase its value in
increments of 0 .5 until the aliasing goes away.
See Blur/Blur Offset (page 3–918).
Blur Aspect—This is an aspect ratio that changes
the shape of the blur. Usually you will not need to
change it. Defa ult=1.0.
Tip: If you see aliasing that occurs most ly 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 a liasing occurs mostly a long
vertical lines, t ry decreasing Blur Aspec t 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 give 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 Raytrace
material or Attenuation in Ra ytrace map to get the
best distance blurr i 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.