--- Felix Kühling <[EMAIL PROTECTED]> wrote: > On Fri, 5 Mar 2004 07:34:30 -0800 (PST) > Alex Deucher <[EMAIL PROTECTED]> wrote: > > > > > --- Felix K_hling <[EMAIL PROTECTED]> wrote: > > > Mark, > > > > > > I'm forwarding your message to the dri-devel mailing list. I > can't > > > test > > > randr here. Alex how much do you know about randr? Can you > reproduce > > > and > > > problems? > > > > Unfortunately, I haven't really messed with randr much. I don't > > personally find much use for it. However I do have the same > notebook > > Mark has so I may take a look at it. Does the dri cvs tree have > xrandr > > in it? unfortunately that notebook has a pretty old distro on it. > > I just realized that I do have xrandr installed. I wasn't aware that > it > was part of XFree86 4.2.1 which I still have installed on my box. Or > is > it a Debian add-on? Either way, I'm going to look into it sometime. >
I did some testing with xrandr, and it indeed causes corruption. It seems to work with the stock xfree86 savage driver. I suspect the problem is that the stride in the GBD and streams registers are set up differently for the DRI vs. what Tim did and they do not get updated properly on an xrandr "mode" switch so the drawing engine draws with the wrong stride. Tim uses the vga regs for the stride and crtc offset, while the DRI driver uses the stream regs. I'm going to have to dig into xrandr more to figure out how to to alert the driver of the new stride. OTOH, I think xrandr uses switchmode(), so the GBD and stream regs should be updated, however it might not work depending on which parts of the ScrnInfoRec xrandr changes. I could be wrong this is just a guess for now. I need to do more research and testing. Alex > Felix __________________________________ Do you Yahoo!? Yahoo! Search - Find what you’re looking for faster http://search.yahoo.com ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
