Graphics Programs Reference
In-Depth Information
Review
Layer Masks
are actually a set of instructions. They identify graphically the pixels of an
image that should be displayed (white) and the pixels that should be transparent (black).
Although a
Selection
can be saved directly to a new layer, it is usually better to save it to a
new layer with a
Layer Mask
. This way, if you do miss something in the selection process,
you can easily fix your selection after the fact.
With
Layer Masks
Black Conceals and White Reveals
.
Any area that is black on the
Layer Mask
will be transparent on the layer image.
If a layer has a layer mask, the image or the mask can be active — the item being modified.
The active one will have brackets around its four corners. The mask is active in the image
below.
