Users interested in Direct3d xp generally download:
The SDK docs give an overview of the changes in Direct3D for DX9, but the definitive list of changes is given by comparing the header files between the two releases. By doing this you will get an insight into every change between the two releases, not just those deemed important enough to mention on the "What's New" page in the docs.
DXGL Wrapper is a program developed to emulate API calls thru OpenGL commands and other platform specific commands in order to run DirectX 8 application running on other platform than Windows. Run the Wrapper. To enable Direct3D 8 to OpenGL emulation, check the button "enable d3d8 immediate mode (d3d8.dll)). To disable wrapping and get back to original Direct3D 8, uncheck the button.
RivaTuner 2.2 is the best & the foremost tweaking utilty available. It provides you everything you may need to tune NVIDIA GPU based display adapters. Advanced tuning features such as driver-level Direct3D / OpenGL and system tuning, flexible profiling system allowing to make custom settings on per-application basis etc. are included.
Provides some extra quality tweaks that both the default NVIDIA tray icon and control panel are lacking. The program allows you to select more Antialiasing modes, as well as OpenGL and Direct3D options right from the tray icon. Also, the utility is able to run automatically at startup thus making it a bit easier to change my settings before playing a game or running a benchmark.
Additional suggestions for Direct3d xp by our robot: