What is direct 2D rendering in Browser

What is direct 2D rendering in Browser..

Thi开发者_StackOverflow社区s is the new feature in IE9 that discussed in PDC

Direct2D

From Wikipedia:

Direct2D is a 2D and vector graphics application programming interface (API) designed by Microsoft and implemented in Windows 7 and Windows Server 2008 R2, and also Windows Vista and Windows Server 2008 (with Platform Update installed).

Direct2D is designed to be fast with support for hardware acceleration through compatible graphics cards. It provides high quality immediate rendering of 2D graphics while maintaining interoperability with GDI/GDI+ and Direct3D/DirectDraw.

Internet Explorer 9 and Firefox will use Direct2D and DirectWrite for better performance.