dix: fix warning in pointer acceleration
newer gcc's warn against how this cast is done (though it eludes me why), and lrintf() is also faster especially on insane processors like the P4 (http://www.mega-nerd.com/FPcast). Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
parent
1b1b20d6e3
commit
35fce4e5c7
|
@ -994,14 +994,20 @@ acceleratePointerPredictable(
|
|||
|
||||
if (dx) {
|
||||
tmp = mult * fdx + pDev->last.remainder[0];
|
||||
*px = (int)roundf(tmp);
|
||||
/* Since it may not be apparent: lrintf() does not offer
|
||||
* strong statements about rounding; however because we
|
||||
* process each axis conditionally, there's no danger
|
||||
* of a toggling remainder. Its lack of guarantees hopefully
|
||||
* makes it faster on the average target. */
|
||||
*px = lrintf(tmp);
|
||||
pDev->last.remainder[0] = tmp - (float)*px;
|
||||
}
|
||||
if (dy) {
|
||||
tmp = mult * fdy + pDev->last.remainder[1];
|
||||
*py = (int)roundf(tmp);
|
||||
*py = lrintf(tmp);
|
||||
pDev->last.remainder[1] = tmp - (float)*py;
|
||||
}
|
||||
DebugAccelF("pos (%i | %i) remainders x: %.3f y: %.3f delta x:%.3f y:%.3f\n", *px, *py, pDev->last.remainder[0], pDev->last.remainder[1], fdx, fdy);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue
Block a user