r2159 - Viewport Resize Filter

[gid15]

Ok, guys we got to be careful, we've taken a few steps back in the last day.

Street Fighter Alpha 3:

r2190:
PERFECT for the first time in Fullscreen. AF causes some missing gfx, but whatever.

r2191:
- Caused fullscreen gfx to revert to previous behavior making them blink and show corrupted. Reported in the official game thread.
- Along with that, the image only occupies a 1/4 of the screen in fullscreen, whereas previous commit, it filled the screen while maintaining aspect ratio.

r2193:
Caused Fullscreen to fill screen BUT now we lost the ability to use the mini right click menu after running a game, which first started working finally with gid's commits ( I think 2190 or around there). So now we're back to hitting the windows key or task manager to escape.

Any improvement in r2195?

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the resize bug is gone, but the slowdown is still there, although only if stencil test is enabled. without it the speed's fine even on 3x, but with it enabled it goes down to 1-2 fps.

Any performance improvement in r2196?