fix extra unnecessary blit
fix extra unnecessary blit


we were not reseting the active region after passes that "resolve" the
guard bands, causing an extra blit to cause that resolving.

google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament,google/filament