Motion Examples of rasterization
2D groups and rasterization
The following pair of figures show the effect of rasterization on the blend modes of 2D groups. In both images, the lone elephant layer, which is in the topmost group in the Layers list, overlaps a portion of the family of elephants layer, which resides in a separate 2D group in the Layers list. In both examples, the lone elephant layer has its Blend Mode parameter set to Vivid Light. In the nonrasterized left example, the lone elephant’s blend mode interacts with the pixels of the group underneath it (the family of elephants). However, in the right example, the topmost group is rasterized. Consequently, its Vivid Light blend mode no longer interacts with the pixels of the second group. 
Important: If a group’s Blend Mode is set to Pass Through and the group’s layers have different Blend Modes applied, the layers are not rasterized.
3D groups and rasterization
The next pair of figures show the effect of rasterization on the intersection of 3D groups. In the left image, the nonrasterized example, two groups (Group A and Group B) containing rectangle shapes intersect in 3D space. In the right image, Group A is rasterized; consequently, Group A and Group B no longer intersect. 