What is accelerated compositing?

• Mapping certain elements on the page into bitmaps
• Maintaining painting order
• Moving/transforming those bitmaps
• Mapping to hardware

How is this different from hardware-accelerated drawing?

• It's based on bitmaps, not acceleration of all drawing commands (c.f. IE9's drawing)

How is it implemented?

• Via GraphicsLayer
• Relies in platform 3D/GPU framework