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Summarize We have now stepped through the vertex shader creation process on a high-level ... let's summarize what was shown so far: To use vertex shaders, you must check the vertex shader support of the software or hardware vertex shader implementation installed on the computer of your end-user with the D3DCAPS8::VertexShaderVersion field.   You must declare, which input vertex properties or incoming vertex data have to be mapped to which input register. This mapping is done with the D3DVSD_* macros. You are able to fill the constant registers of the vertex shader with values by using the provided macros or by using the SetVertexShaderConstant() function. After you have prepared everything this way and you have written a vertex shader, you are able to compile it, retrieve a handle to it by calling CreateVertexShader() and make it for execute by using SetVertexShader(). To release the resources  that are allocated by the vertex shader you should call DeleteVertexShader() at the end of your game. What happens next? In the next chapter "Programming Vertex Shaders" we will start writing our first vertex shader. We will discuss basic lighting algorithms and how to implement them.  References [Bendel] Steffen Bendel, "Smooth Lighting with ps.1.4", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Calver] Dean Calver, "Vertex Decompression in a Shader", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Gosselin] David Gosselin, "Character Animation with Direct3D Vertex Shaders", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Hurley] Kenneth Hurley, "Photo Realistic Faces with Vertex and Pixel Shaders", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Isidoro/Gosslin], John Isidoro, David Gosselin, "Bubble Shader", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [LeGrand] Scott Le Grand, Some Overlooked Tricks for Vertex Shaders, ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Pallister] Kim Pallister, "Optimizing Software Vertex Shaders", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Riddle/Zecha] Steven Riddle, Oliver C. Zecha, "Perlin Noise and Returning Results from Shader Programs", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Schwab] John Schwab, "Basic Shader Development with Shader Studio", ShaderX, Wordware Inc., pp ?? - ??, 2002, ISBN 1-55622-041-3 [Vlachos01] Alex Vlachos, Jörg Peters, Chas Boyd and Jason L. Mitchell, "Curved PN Triangles", ACM Symposium on Interactive 3D Graphics, 2001 (http://www.ati.com/na/pages/resource_centre/dev_rel/CurvedPNTriangles.pdf). Additional Ressources A lot of information on vertex shaders can be found at the web-sites of NVIDIA (developer.nvidia.com) and ATI (www.ati.com). I would like to name a few: Author Article Published at Richard Huddy Introduction to DX8 Vertex Shaders NVIDIA web-site Erik Lindholm, Mark J Kilgard, Henry Moreton SIGGRAPH 2001 -- A User Programmable Vertex Engine NVIDIA Web-Site Evan Hart, Dave Gosselin, John Isidoro Vertex Shading with Direct3D and OpenGL ATI Web-Site Jason L. Mitchell Advanced Vertex and Pixel Shader Techniques ATI Web-Site Philip Taylor Series of articles on Shader Programming http://msdn.microsoft.com/directx Keshav B. Channa Geometry Skinning / Blending and Vertex Lighting http://www.flipcode.com/tutorials/tut_dx8shaders.shtml Konstantin Martynenko Introduction to Shaders http://www.reactorcritical.com/review-shadersintro/review-shadersintro.shtml Acknowledgements I'd like to recognize a couple of individuals that were involved in proof-reading and improving this paper (in alphabetical order): David Callele (University of Saskatchewan) Jeffrey Kiel (NVIDIA) Jason L. Mitchell (ATI) © 2000 - 2002 Wolfgang Engel, Frankenthal, Germany

Contents   Introduction   Vertex Shaders in the Pipeline   Vertex Shader Tools   Vertex Shader Architecture   High Level View of Vertex Shader Programming   Conclusion   Printable version   Discuss this article The Series   Fundamentals of Vertex Shaders   Programming Vertex Shaders   Fundamentals of Pixel Shaders   Programming Pixel Shaders   Diffuse & Specular Lighting with Pixel Shaders