Autodesk® 3ds Max® 2012 Essentials: AUTODESK OFFICIAL TRAINING GUIDE
by Randi L. Derakhshani, Dariush Derakhshani
Selecting a Shadow Type
To get shadows to respond to transparencies, you will need to use raytraced shadows instead of shadow maps. Additionally, if you need to soften your shadows the farther they are cast from the object, you will need to use area shadows.
Shadow Maps
The shadow map is often the fastest way to cast a shadow. However, shadow map shadows do not show the color cast through transparent or translucent objects.
When you are close to a shadow, in order to avoid jagged edges around the shadow, use the Size parameter to make the resolution higher for the cast shadow.
The following parameters are useful for creating shadow maps:
Bias The shadow is moved, according to the value set, closer to or farther away from the object casting the ...
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