XAA vs. EXA in old hardware support
daniel at fooishbar.org
Tue Jun 20 01:05:42 PDT 2006
On Tue, Jun 20, 2006 at 08:56:42AM +0100, Alan Cox wrote:
> Ar Llu, 2006-06-19 am 19:35 -0400, ysgrifennodd Adam Jackson:
> > EXA now decomposes line draws (and some other stuff) to iterated calls to the
> > driver's Solid fill routine.
> That only helps for horizontal and vertical lines (and for older cards
> is generally slower there than writing to the frame buffer). Xtank is
> just a classic example of where hardware line draw should be used and
> why EXA should allow drivers to provide a line draw routine, at least
> for the non alpha case.
If all you were doing was playing xtank, then this would make sense.
But on normal desktops, it's a performance _loss_. A seriously
noticeable loss. If you really play xtank that much, you can use XAA,
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 191 bytes
Desc: Digital signature
More information about the xorg