
346 IV Shadows
Figure 3.6. A mangled silhouette shape with SMSR (top) and without SMSR (bottom).
Due to edge generalization and lack of shape understanding, SMSR changes the desired
object shape.
3.3.3 Absence of Data
In this specific scenario, the shadow discontinuity is prematurely interrupted by
an occluder or the search function goes outside the viewport boundaries. These
cases result in a varying or incorrect edge discontinuity length during the search
step, which results in a visible silhouette artifact.
3.3.4 Mangled Silhouette Shape
A typical MLAA approach distinguishes discontinuities into L-, Z-, and U-shaped
patterns. Taking the shape patter ...