[DrawLogic reviews Silverlight 3 – Beta] is planned to have shader model 2.0 support, but it is not GPU hardware accelerated. Suggested alternatives are: [Papervision3d], [Away3d], and [Sandy].
[Papervision] – performance is [too slow] to be ideal. PapervisionX due out later is based on the Flash 10 APIs aims to have better performance. [API]
[Away3d] – boosts good performance with a 100k [cached] triangle scene. [API] [examples]
[Sandy] – does not offer hardware acceleration [API] [examples]
[Torque3d] – [api] [blog] [forums] [videos] [videos] [albumbs] [videos] [wiki]