The following reftests fail in hardware accelerated mode on Windows 7 with the ATI Mobility Radeon HD 4650: fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == inline--position-relative--01.xhtml[accelerated] inline--position-relative--01-ref.xhtml[accelerated] http://brasstacks.mozilla.com/resultserv/data/testcase/3808/ fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == inline--display-inline-block--01.xhtml[accelerated] inline--display-inline-block--01-ref.xhtml[accelerated] http://brasstacks.mozilla.com/resultserv/data/testcase/3798/ fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == inline--display-inline--01.xhtml[accelerated] inline--display-inline--01-ref.xhtml[accelerated] http://brasstacks.mozilla.com/resultserv/data/testcase/3796/ fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == inline--display-block--01.xhtml[accelerated] inline--display-block--01-ref.xhtml[accelerated] http://brasstacks.mozilla.com/resultserv/data/testcase/3794/ See links above for test images. In all cases the differences are visually detectable, but not large; the blue rectangle has a fuzzy edge in the test page, but not the reference page. The same problem is not observed on this hardware in software-rendered mode, nor on a WinXP VM in hardware-accelerated mode.

I think these may go away once bug 548648 lands.

(In reply to comment #1) > I think these may go away once bug 548648 lands. I suspect the same, DirectWrite adds subpixel sizes to glyphs on windows.

Please verify these issues are resolved.

Seems like it's fixed