writeMask
A bitmask that determines to which bits that stencil operations can write.
Declaration
var writeMask: UInt32 { get set }Discussion
writeMask are used for logical AND operations to values that are going to be written into a stencil attachment as the result of a stencil operation.
The least significant bits of the write mask are used. The default value is all ones. A logical AND operation with the default writeMask does not change the value.