clear constant
Destination pixels covered by the source are cleared to 0.
Implementation
static const BlendMode clear = PorterDuff(
  PorterDuff.zero,
  PorterDuff.zero,
);
Destination pixels covered by the source are cleared to 0.
static const BlendMode clear = PorterDuff(
  PorterDuff.zero,
  PorterDuff.zero,
);