printableAsciiGlyph
Supplies one exact 8 by 8 transparent-white or opaque-white printable-ASCII glyph mask.
Parameters
codePoint
one code point from U+0021 through U+007E.
mask
immutable binary-white glyph pixels.
Throws
when the slot, range, size, or binary pixel values are invalid.
when called from another thread or after the builder callback ends.