Supporting 3D DirectSound Acceleration in WDM Audio

DirectSound exposes hardware-accelerated 3D mixing for WDM audio miniport drivers that meet the following requirements:

• The pin must meet the requirements listed in Supporting 2D DirectSound Acceleration in WDM Audio.

• The pin should include a 3D node (KSNODETYPE_3D_EFFECTS) in its node chain. (See DirectSound Node-Ordering Requirements.)

• The pin must support the KSPROPSETID_DirectSound3DBuffer property set on the 3D node.

• The pin must support the KSPROPSETID_DirectSound3DListener property set on the 3D node.