This can reduce game performance somewhat. Use Pixel Shaders: if you have a graphics card which supports it, enabling pixel shaders will give some surfaces a more impressive appearance.If you see unnaturally-bright textures when using DirectX 9 rendering this indicates that your card is unable to process graphics correctly in this mode, and you should therefore switch to DirectX 7 rendering to experience the game correctly.
DirectX 7 rendering eliminates some of the graphical effects the game can produce but requires far less processing power. If you have a modern graphics card (designed with proper support for DirectX 9 or higher) you can use DirectX 9 rendering.
If your game looks like either of these, download the latest appropriate drivers for your graphics card (e.g., Nvidia, ATI/AMD).
