FreeTypeSubPixelAntiAliasing

FreeTypeSubPixelAntiAliasedGlyphRenderer
A FreeTypeSubPixelAntiAliasedGlyphRenderer is xxxxxxxxx.
Instance Variables
filter:
aGlyphForm should be 3x stretched 8 bit GlyphForm
initialize
Subclasses should redefine this method to perform initializations on instance creation
renderStretchedGlyph:depth:subpixelPosition:font:
Glyphs are either 1 or 8 bit deep. For 32 bpp we use 8 bits, otherwise 1
subGlyphOf:colorValue:mono:subpixelPosition:font:
the default renderer does not support sub-pixel anti-aliasing,
so answer an ordinary glyph