[D3D8 Patch] vertex shader integration + fixes - VS3

[Raphaël Junqueira]

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Hi again,
 this patch enable pixel shader rendering into D3D8 (and correct some stupid bugs i have)

Changelog:
 - intergration with DrawPrimitive
 - remove non-esthetic c++ comments into c comments block ;)
 - more more debug

Problems:
 - very slow
 - i have problem with textures, if people can look at code ...

TODO:
 - better integrate vertex shader with draw primitive (maybe we have to splt DrawPrimitive)
 - optimize software emulation
 - hardware vertex shader program support (using auto-detect caps)
 - syntax validity of vertex shader declaration and vexter shader function code (Validate*Shader functions)
 - vertex shader compilator (in D3DX8)
 - pixel shaders

can people test this, using simple shaders programs please ?


thx, Raphael
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