A little background for those who wondering what is Direct2D and DirectWrite Hardware Acceleration
Direct2D :
Direct2Dis a hardware-accelerated, immediate-mode, 2-D graphics API that provides high performance and high-quality rendering for 2-D geometry, bitmaps, and text. The Direct2D...
add-ons
browser settings
config settings
direct2d
directwrite
firefoxbeta
gdi
graphics api
hardware acceleration
high quality text
mozilla firefox
opentype
performance
sub-pixel rendering
text rendering
typography
unicode support
user interface
video drivers