Introduction to Pixel Shaders - Introduction to 3D Game Programming with DirectX 9.0 - page 334

Note: Once you understand how to implement vertex and pixel
shaders, you need some ideas of effects that can be implemented
using them. The best way to get ideas of effects that can be achieved
with vertex and pixel shaders is to study existing effects. The topic
Direct3D ShaderX: Vertex and Pixel Shader Tips and Tricks edited by
Wolfgang Engel, also from Wordware Publishing, is a good start, as
are Nvidia's and ATI's developer sites, http://developer.nvidia.com/
and are http://ati.com/developer/index.html, respectively. In addition,
we recommend CG: The Cg Tutorial by Randima Fernando and Mark J.
Kilgard. This topic is an excellent tutorial to programmable 3D graph-
ics using the high-level graphics language Cg, which is practically the
same as Direct3D's HLSL.
Team-Fly ®