i810 rotate memory range off?

[Alan Hourihane]

On Tue, 2006-01-17 at 19:43 -0500, Josh Myer wrote:
> First off: thanks for getting i810 rotation working!  It's not quite 
> working here, but the pieces are there and it just needs some massaging. 
>   I'd appreciate any feedback or help in making it work here.
> 
> I'm using the i810 driver with Rotate: it almost works, but the memory 
> range mappings seem to be off.  There's a region of random-ish noise on 
> the far right of the screen, with a weird little band of noise at the 
> bottom as well.  I took a picture of the display while running, 
> available at:
>    http://www.joshisanerd.com/i810_rotate_corruption.jpg
> 
> The logfile is at:
>    http://www.joshisanerd.com/i810_rotate_corruption_log.txt
> 
> The reason I say the left-hand band is random-ish is that, if I switch 
> ot the VESA driver, then switch back to the i810 driver, the desktop 
> contents at shutdown of the old server appear over there.
> 
> Also, it's setting up a 1600x1200 virtual desktop.  The far right edge 
> of this desktop doesn't quite match up with the memory mappings: I can 
> shoot my cursor ~100pixels off the end, then pull it back in.  Whenever 
> I move a window over there, its contents get pushed into a ~32pixel 
> strip along the right edge, moving down the screen as I move to the right.
> 
> X.org is 6.8.2 from Debian, built 29nov05
> 
> This is in a Dell Inspiron 300m with the 852GM/855GM chipset.
> 
> Thanks again for all the work on this!

This is old rotation code which is just about to get yanked for the new
improved version that's fully accelerated with 3D too.

You might want to jump to X.Org 6.9/7.0 to get ready for it though.

I'll be committing the code within the next couple of weeks.

Alan.