| As all of us hardware acceleration is the process where we use hardware to perform some functions rather than performing those functions using the software which is running in the CPU. WPF exploits hardware acceleration in a two tier manner. Below figure will clear all the doubt:-
Tier 0:- If the video card does not support hardware acceleration then WPF uses Tier 0 rendering mode. In other words it uses software acceleration. This corresponds to working of DirectX version less than 7.0.
Tier 1:- If the video card supports partial hardware acceleration then WPF uses Tier 1 rendering mode. This corresponds to working of DirectX version between 7.0 and 9.0.
Tier 2:- If the video card supports hardware acceleration then WPF uses Tier 2 rendering mode. This corresponds to working of DirectX version equal or greater than 9.0. | | |