Xinerama infrastructure

[Kevin Puetz]

Jaymz Julian wrote:

> On Mon, Feb 16, 2004 at 04:48:31PM +0000, Steve Salazar wrote:
>> Ok, sorry.  Like I said I don't know X except as a user so I'll summarize
>> from that point of view and not even try to use any X jargon:
>> 
>> 1. When I use XFree on one head, it is fast
>> 2. When I use XFree on two heads, it is really slow
>> 3. When I use Xig on two heads, it is fast

Probably radeon, just as it's a very common choice that does two heads :-)

and on Radeon, Xinerama means no DRI -> means MMIO use of the card instead
of using the CP/DMA approach -> seems to have slower 2d accel. The extra
repainting when you drag windows from one screen to the other also
contributes to a subjective feeling of slowness.

Or maybe MergedFB just has a really solid placebo effect (espescially as it
eliminates the invalidate/repaint when a drag crosses the boundary). It
does seem quicker on my 7500, but I've learned from long experience not to
commit to claims like that without some numbers too :-)

> just to satisfy my curiosity, on what hardware is this?
> 
> -- jj