DirectX 9.0a is an updated version of the DirectX 9.0 runtime which includes bug fixes and improves performance in the graphics and networking components. There are no new or modified APIs in this release. What’s new or fixed:Performance enhancement to the runtime texture management in Direct3D.
General performance improvements to D3DX
Fix for a potential PSGP memory overwrite in Direct3D.
Support for anti-aliased render targets added
Update for DirectPlay to address some network connectivity issues using some UPnP routers.
Managed DirectX Security fix.