Added code for smoothing upscaled sprites (for the highest detail setting).

I don't know if I got it right - the result doesn't look that great to me -
but at least the infrastructure is there.

This, I think, marks the point where BS2 graphics is pretty much done. Some
functions haven't been unstubbed yet, but I believe they're used for
debugging and/or profiling. I'm not sure they're worth the trouble.

Of course, there is still testing and clean-ups to make. For instance, I'd
like DrawSprite() to use malloc() a bit less.

svn-id: r9879

0 files changed, 0 insertions, 0 deletions