The default vertical tiling is designed for displays that are rotated 90
or 270 degrees from normal orientation. Devices where pixel data
advances first horizontally then vertically requires horizontally-tiled
data.
Similarly when generating upright text on a row-major-order monochrome
display the most significant bit may encode the pixel at the lowest
horizontal position.
Add options to control horizontal vs vertical tiling, and msb vs lsb
pixel order.
The commit also generates the representation of the glyph in comments at
each row.
Signed-off-by: Peter A. Bigot <pab@pabigot.com>
fd14c743c1