It
will increase render time for little to no effect. A range around 2048 is usually good for
most cases. Larger scenes like this chess board that have a large scale to them will require
higher Size values such as the 4096 used. The rule of thumb is to use the lowest Size value
that will get you the best result for your scene.
In some scenes, you may discover that no Shadow Map size will give you good results (for
instance in large outdoor scenes). In these cases, you will have to revert to a different shadow
method, such as Raytraced shadows.
Bias = 6.0 Bias = 1.0 (Normal)
Figure 10.68
The Bias offsets the
shadow from the
casting object.
490 ?– chapter 10: 3ds Max Lighting
Sample Range This creates and controls the softness of the edge of shadow-mapped shadows.
The higher the value is, the softer the edges of the shadow will be. Figure 10.70 shows
you how a soft edge (on the left) can make the lighting seem weaker or farther away from
the subject than crisp shadows (on the right).
Raytraced Shadows
Raytracing involves tracing a ray of light from every light source in all directions and tracing
the reflection to the camera lens. You can create more accurate shadows with raytracing.
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