RE: [3/5] WineD3D: Optimize the fragment processing description

[Stefan Dösinger]

> Is there any particular reason you're not simply using the compiler's
> support for bit-fields?
Mostly because I've written this code before you mentioned them to me. I
think it can't hurt to ask Alexandre if bitfields are ok to use in Wine.
How's the support among compilers(older gcc versions? Non-gcc compilers like
icc and msvc?)