In order to add functionality to the D3D pipeline, the shader model needs to be upgraded from 2.0 to 3.0. The main restriction that 2.0 is hitting is the limit of the number of instructions the pixel shader can have.

Compatibility is lost for graphic cards that support DirectX 9.0 but not 9.0c. Graphic cards that do not support shader model 3.0 will now report incompatibility through ConditionalFeature.SCENE3D.