Microsoft DirectX 9.0

Converting Texture Operations

Pixel shaders extend and generalize the multi-texture capabilities of Microsoft?DirectX?6.0 and 7.0 in the following ways.

To support this increased flexibility efficiently, the application programming interface (API) syntax is changed from DWORD pairs to an ASCII assemble code syntax. This exposes the functionality offered by procedural pixel shaders.

Note When you use pixel shaders, specular add is not specifically controlled by a render state, and it is up to the pixel shader to implement if needed. However, fog blending is still applied by the fixed function pipeline.

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