Add Layer Mask

添加图层蒙版

This command creates a layer mask for the active layer.

这个命令为活动图层创建一个图层蒙版。

If no pixels are selected when you choose this command, the layer mask is filled with white.

如果选择此命令时没有选择像素，则图层蒙版将填充白色。

Otherwise, the layer mask is white within the selection and black outside the selection. In this way, the selection defines which parts of the layer are visible.

否则，图层蒙版在选区内为白色，在选区外为黑色。通过这种方式，选择定义了层的哪些部分是可见的。

You can edit a layer mask in much the same way as you would a normal layer: click on the layer mask icon to activate it and paint on the layer mask using the brush or any other paint tool. To apply the layer mask permanently, right-click (Windows) or Command-click (Mac OS) on the layer mask and choose Merge Layer Down.

你可以像编辑普通图层一样编辑图层蒙版: 点击图层蒙版图标激活它，然后使用画笔或其他绘图工具在图层蒙版上绘制。要永久应用图层蒙版，右键单击(Windows)或命令单击(Mac OS)上的图层蒙版，并选择合并图层下来。