Normal Blend Mode
This is the standard blend mode which uses the top layer alone, without mixing its colors with the layer beneath it.
Where a is the value of a color channel in the underlying layer, and b is that of the corresponding channel of the upper layer. The result is most typically merged into the bottom layer using "simple" (b over a) alpha compositing, but other Porter-Duff operations are possible. The compositing step results in the top layer's shape, as defined by its alpha channel, appearing over the bottom layer.
Read more about this topic: Blend Modes
Famous quotes containing the words normal, blend and/or mode:
“It is normal to give away a little of one’s life in order not to lose it all.”
—Albert Camus (1913–1960)
“Living by basic good-mothering guidelines enables a mom to blend the responsibilities of parenthood with its joys; to know when to stand her ground and when to be flexible; and to absorb the lessons of the parenting gurus while also trusting her inner voice when it reasons that another cookie isn’t worth fighting over, or that her child won’t suffer irreparable trauma if, once in a while, Mom puts her own needs first.”
—Sue Woodman (20th century)
“The mode of clearing and planting is to fell the trees, and burn once what will burn, then cut them up into suitable lengths, roll into heaps, and burn again; then, with a hoe, plant potatoes where you can come at the ground between the stumps and charred logs; for a first crop the ashes suffice for manure, and no hoeing being necessary the first year. In the fall, cut, roll, and burn again, and so on, till the land is cleared; and soon it is ready for grain, and to be laid down.”
—Henry David Thoreau (1817–1862)