GPU Pro 6

106 II Rendering

Morphological Frame A

Analytical Frame B

Analytical Frame A

Morphological Frame B

Figure 3.3. Antialiased edge changes in motion when using analytical data. Note that

every morphological solution will fail as no gradient change will be detected due to the

same results of rasterization. This gets more problematic with shorter feature search

distance.

Such methods provide temporally stable edge antialiasing, as the blend factor

relies on continuous triangle information rather than discrete rasterization results

(see Figure 3.3).

Gradient length is limited only by storage. In practice, it is enough to store

additional data in 8 bits: 1 bit ...