wined3d: universal surface convertor function for unsigned integer color formats

[Philip Nilsson]

On Mon, Jul 14, 2008 at 02:51:42AM +0400, Victor Eremin wrote:
> 
> Converter function supports conversion between most of
> "unsigned color" argb/xrgb surface formats (like D3DFMT_A8R8G8B8,
> D3DFMT_A8R3G3B2, and so on), and between "luminosity" color formats
>  (D3DFMT_L8, etc), excluding D3DFMT_A16R16G16B16, D3DFMT_A8P8,
> D3DFMT_P8 and D3DFMT_A1.
> 
> Conversion from rgba to luminosity (and vice versa) is not currently 
> implemented.
> 
> The patch removes "Cannot find coverter" FIXMEs from "Ancient Evil" and
> "Stranded 2" games.
> 
> Patch also fixes water glitches in "Stranded 2" game.

I've attached my pixel conversion function which uses the table in
utils.c.  Hope you find it useful although I haven't really polished it.
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